Reading prompt from stdin...
OpenAI Codex v0.161.0
--------
workdir: /home/claude-agent/forge-build/forge-assets/jobs/alien-harvester-v1
model: gpt-6-astra
provider: openai
approval: never
sandbox: danger-full-access
reasoning effort: xhigh
reasoning summaries: none
session id: 01a14602-c20e-7c22-b815-3a9c42c567fc
--------
user
Build huge alien harvester mothership: a dark elongated segmented hull like a deep-sea creature, hanging tentacle-like harvesting arms underneath, rows of glowing amber vents, spines along the back, a big glowing maw at the front, no human-style windows (the one on sheet.jpg) as a production, REALISTIC 3D game asset in Blender, for Forge's asset library. Look at the reference
images in this directory with your image tool first: sheet.jpg. It must look like a real object from a modern
third-person game up close: never blocky, never toy-like, never flat colours.

Blender 5.2 is headless on another machine. Write bpy scripts here and run them with:
  ssh gex44 /root/blender-spike/blender-5.2.0-linux-x64/blender -b --python-exit-code 1 --python /root/fal-author/alien-harvester-v1/<script>.py
(first `ssh gex44 mkdir -p /root/fal-author/alien-harvester-v1`, scp scripts and any textures to gex44:/root/fal-author/alien-harvester-v1/, scp renders back here, then
LOOK at them with your image tool). Iterate until the renders match the references: silhouette, proportions, every
named part, materials. Only one Blender job on the GPU box at a time from you.

Quality bar:
- Real dimensions in metres: 420 m long, 160 m wide, 120 m high.
- Construction detail as geometry where it shapes the silhouette or catches light: bevelled edges everywhere (no razor
  box edges), real thickness, frames around openings, trims, rails, fittings, bolts, ropes, cables, small parts. No
  z-fighting, no gaps, nothing floating, smooth shading on round parts.
- Photographic materials: use CC0 Poly Haven textures (download 1k or 2k jpg maps from https://dl.polyhaven.org/file/
  ph-assets/Textures/jpg/<res>/<id>/<id>_<map>_<res>.jpg, maps diff, nor_gl, arm; pick ids by browsing
  https://api.polyhaven.com/assets?t=textures) mixed with node detail (rust streaks, grime, moss, edge wear, salt), then
  BAKE each material's result with Cycles to image textures (base colour, normal, ORM) so it survives glTF export.
  List every Poly Haven id you used in NOTES.md (licence evidence). No other image sources.
- Budget: 80k to 200k triangles, at most 9 materials, texture images at most 2048 px, GLB at most 12 MB.

Export contract (glTF binary .glb, Y up, metres): Nose toward +Z, up = +Y, +X = the ship's LEFT side, centred on X = 0; origin (0,0,0) at the ship's centre of mass (about the middle of the hull), the ship level and flying: landing gear, if the design has any, is RETRACTED with its doors closed. Apply transforms and modifiers. No cameras, lights or
helpers in the GLB. GAME WEIGHT overrides the budget above: every texture image at most 1024 px, ORM / occlusion maps at most 512 px; share baked texture sets between parts and use tiling materials + trim textures on big surfaces. BIG SHIP: a 1024 bake cannot hold a hull this size: use tiling hull-plate materials and trim textures (panel strips, window strips, vents) with world-scale UVs. Detail must read at three distances: the silhouette (big masses, towers, engine blocks), the middle (superstructure, turrets, hangar mouths, antenna forests, armour belts) and close up (greebles, pipes, panel seams, rows of lit windows at human scale). Small parts may be instanced/linked duplicates. Separate named mesh nodes: Hull (everything fixed to the hull). Every MOVING part is its own node with its object origin ON its pivot: Turret_1..Turret_n (each gun turret, origin on its vertical traverse axis, turns about its local Y) each with a child Gun_1..Gun_n (the barrels, origin on the elevation trunnion axis, elevates about X); Canopy (cockpit canopy, origin on its hinge) on craft with a canopy; and the extra moving parts named in the description. Empty nodes (no mesh): Thruster_1..Thruster_n at the centre of every main engine nozzle exit (games put flame and glow there; exhaust points to -Z), Muzzle_1..Muzzle_n at every barrel tip (child of its Gun, or of Hull for fixed guns), Hardpoint_1..n (missile and torpedo launch points), Seat_Pilot (pilot hip point) on craft with a cockpit, Camera_Chase (a good third-person chase camera point behind and above), Light_Nav_L (left tip, red), Light_Nav_R (right tip, green), Light_Beacon. Materials: the glowing inside of every engine nozzle = one material named "Engines" (emissive, colour as described, modest strength, games raise it); lit windows, running lights and glowing details = one material "Lamps" (emissive); cockpit or bridge glazing = one material "Glass" (alpha BLEND, tinted) with a visible cockpit (seat, panels, stick) behind it on small craft. In nodes.json add "axes": for every moving node, the unit axis it turns about in its parent's space. PAINT CONTRACT (how games get faction colours of one model): the main hull colour lives in ONE material named exactly "Paint". Its base colour TEXTURE holds only light neutral detail (near white, with panel lines, grey grime, engine scorch, micro-meteorite pitting and chipped edges baked in) and its baseColorFactor holds the paint colour; default factor = [0.10, 0.11, 0.10] (dark carapace). A game changes that factor, so nothing else (bare metal, engines, glass, lamps, weapons, cockpit) may use Paint. Extra moving parts: Arm_1..Arm_6 (the harvesting arms, origin on their root pivot). In nodes.json add "paints": six good paints for this model as linear RGB triples with names, the default first, in the spirit of: deep violet, bone white, pearl, abyssal teal, oxblood, obsidian, jade, amber; and render paints.png: a 3x2 grid of the same 3/4 view in those six paints (EEVEE or low-sample Cycles) to prove the recolour works. MOVING PARTS: never apply transforms to a moving node. Check it in Blender before export: rotate each moving node 30 degrees in a test render; nothing may leave its place. No text, numbers, insignia, faction emblems, flags or logos anywhere (games add their own factions). ORIGINAL DESIGN: never model a famous film, TV, anime or game ship (no X-wing, TIE, Star Destroyer, Millennium Falcon, Enterprise, Serenity, Normandy, Viper, Valkyrie, Gundam, Halo, Homeworld, EVE, Elite or Expanse ship): if the sheet looks like one, keep its proportions and parts but make the silhouette details, nose and engines your own. RENDERS: final.png and paints.png on a dark space backdrop (near black with a faint blue gradient, no ground) lit by a strong white key light from the upper front left plus a soft cool fill, so every part reads. Keep this directory clean: put any helper tools you install (node_modules, vendored three.js, browser checks) under /tmp, never here. Pace: deliver a first complete GLB within about 40 minutes, then use what is left of about 80 minutes to improve what the renders show is weakest. Use Cycles with the GPU (OptiX/CUDA) and modest samples for bakes and renders. 
Deliver in this directory: alien-harvester.glb; build_alien-harvester.py (ONE script that builds the whole asset from an empty scene,
downloads/loads its textures, bakes and exports: the GLB you deliver must come from a clean run of it); final.png
(1920x1080 Cycles render, 3/4 front view, soft daylight); side.png (orthographic side); clay.png (same view as final,
plain grey material); nodes.json (every node name with world position + overall bounding box); NOTES.md (6 lines:
what you made, triangle count, materials, texture sizes, Poly Haven ids, what still differs from the references).
Stop when you judge it matches the references and would not look out of place in a modern realistic game.

warning: `--dangerously-bypass-hook-trust` is enabled. Enabled hooks may run without review for this invocation.
warning: `--dangerously-bypass-hook-trust` is enabled. Enabled hooks may run without review for this invocation.
codex
I’ll inspect the reference and Forge asset rules, then build and bake the ship in Blender, check its arm pivots, and iterate from rendered views.

hook: PreToolUse
hook: PreToolUse
hook: PreToolUse
hook: PreToolUse
hook: PreToolUse Completed
hook: PreToolUse Completed
hook: PreToolUse Completed
hook: PreToolUse Completed
exec
/bin/bash -lc 'cat /home/claude-agent/AGENTS.md' in /home/claude-agent/forge-build/forge-assets/jobs/alien-harvester-v1
 succeeded in 0ms:
<!-- GENERATED from CLAUDE.md by forge-hub/hub/gen_agents_md.py — do not edit by hand. -->
<!-- Re-run: python3 /home/claude-agent/forge-hub/hub/gen_agents_md.py -->

# Forge: AI-Powered App Factory
Single-tenant server (16GB ARM64 Hetzner), runs alongside Detecteev (forensics platform).

## Navigation
- **Forge app**: `/home/forge/app/` (Python, DBOS workflows)
- **Forge UI**: `/home/forge/ui/` (React + FastAPI, port 8765)
- **Detecteev**: `/home/claude-agent/detecteev/` (Next.js + FastAPI)
- **Project sandboxes**: `/home/forge/data/projects/{slug}/sandbox/`
- **Skills**: `/home/forge/app/skills/` (reasoning + stack-specific)
- **Deployed apps**: `/home/forge/deploys/{slug}/`
- **Specs & plans**: `/home/claude-agent/forge-build/`

## Architecture at a Glance
- **Pipeline**: intake → ideation → research → challenge → business → prd → feature-spec → stack-selection → blueprint → scaffolding → feature-build → dx-audit → product-review
- **Native Claude CLI calls use `--model sonnet`**. Provider adapters explicitly select their own API model; DeepSeek uses `deepseek-flash[1m]` through Claude Code.
- **Autonomy**: all stages auto by default, no human gates
- **Deploy**: Docker containers at `{slug}.forge.le-borgne.fr` via Traefik
- **Feedback loop**: report issue → AI drafts fix → user approves → auto-redeploy

> ⚠️ The pipeline above is the **legacy Personal Forge** (forge.le-borgne.fr). The live product is **Forge Corp** — multi-box, multi-tenant. Read the next section for current topology.

## Forge Corp topology & deploy architecture (CURRENT — read this)

**Boxes & roles** (each box has its OWN `/home/claude-agent`, memory store, and CLAUDE.md — they do NOT share):
- **local** `204.168.129.84` — orchestrator. Opus planning, this memory store, the `coord` bus. No app/infra runs here.
- **ax42** `5.9.32.176` (`ssh root@5.9.32.176`) — Corp **Engine** (the build+deploy pipeline `deploy_sandbox`) + Postgres **primaries**. Canonical Engine source: `/home/claude-agent/forge-monorepo/apps/forge-engine/` (module `forge_engine`).
- **box1** `136.243.170.223` (`ssh box1`) — Corp **app-runner**: deployed tenant apps (zero/friends/recommerce) run here + PG **standbys**.
- **gex44** `5.9.10.114` (`ssh root@5.9.10.114`) — **Factory** (auth/Google-OAuth proxy + tenant UI) + inference (Flux/3d/LiteLLM) + **Caddy edge**. Canonical Factory source: `/home/claude-agent/forge-monorepo/apps/forge-corp-factory/`.
- **prod** `46.224.168.31` (`ssh prod`) — **Tower** (operator control plane) + dashboard; also legacy Personal Forge + Detecteev.

**Canonical source = the live HOST trees, NOT git.** The Engine is image-baked (no bind-mount): deploy = `docker build` from the ax42 host source; Factory builds from the gex44 host source. The GitHub repo `T1misageek/forge-monorepo` is a periodic **snapshot/backup**, NOT the build source. NEVER treat git as source of truth. Before any Engine/Factory rebuild, reconcile **host ← live container** (a single-file rsync from the mirror silently drops live state). httpx is in the Engine container, not host Python.

**Engine runs blue/green since 2026-09-02 13:11 UTC.** nginx `forge-engine-front` owns host `:8000` + docker alias `forge-engine`; Engine instances are `forge-engine-<ts>` (no host port). There is NO container named `forge-engine` any more: use `docker exec $(engine-live) …`, `docker logs $(engine-live)`. Deploy = `engine-deploy` (= `deploy.ax42.sh`: build → start new instance → `engine-switch` nginx reload → drain old, **no idle gate, nothing killed**); `engine-rollback` flips back (refuses a stopped previous); `engine-restart` no-arg = `engine-deploy --no-build`. **Builds AND refine turns survive an instance death** (P1 09-02 + P2 09-03): a 15 s sweep adopts orphaned runs (`pipeline/adopt.py`) and refine turns (`refine/adopt.py`: `metadata.active_turn`, `claude --resume` of the shared transcript store `~/.claude-engine`), proven by hard-kill on pausetest tenants. Never kill an instance without reading `/admin/inflight` first. **P3 (09-03)**: brief submits are idempotent (`X-Forge-Idempotency-Key` = Factory brief id → `runs.idempotency_key`, replay = 200 + `x-forge-idempotent-replay: 1`); the Factory retries only when Engine `/health` advertises `capabilities.idempotent_submit`; the reconciler re-polls `failed` runs < 6 h. `/admin/instance`, `/admin/inflight`, `POST /admin/drain` (consumer Bearer key). Detail: memory `project_engine_zero_downtime_deploys.md`.

**Deploy pipeline `deploy_sandbox`** (`forge_engine/deploy/__init__.py`, synchronous): Step 0 Dockerfile/.env → 0b telemetry route → 0c connectors → 0d cache → 1 build → 1b transport to box1 → 2 run (reaps prev container immediately, so **no `-prev` rollback exists** by later steps) → 3 inspect IP → 4 DNS → 5 traefik → **6 authed-smoke gate**.

**Step 6 — deploy-time authed-smoke gate (`forge_engine/deploy/smoke.py`)**: after cutover, mints a REAL synthetic session and GETs the app's post-login routes (pages referencing `requireUser`/`getCurrentUser`). Catches the "builds + homepage-200 but 500s after Google login" class (e.g. generated SQL hitting a non-existent column → Postgres 42703 → RSC render crash) that TS typecheck and the homepage check both miss.
- ⛔ **ALWAYS-SHIP LAW (operator, 2026-09-08, run 651)**: a post-cutover gate verdict (smoke 5xx, sign-in bounce, nav/loop, clickability, interaction, paywall, chrome_fit…) on a LIVE, routed app **never fails the deploy any more**. `forge_engine/deploy/ship_policy.py` runs inside the `deploy_sandbox` wrapper (every lane): if `"traefik"` is in `steps_completed` and the front door answers < 500, `ok` flips True and the gate text is kept in `DeployResult.shipped_with_findings`, the corp-deploy `gate_report`, and `runs.meta.shipped_with_findings` (ERROR log `SHIPPED WITH FINDINGS`). Still real failures: build/run/dns/traefik errors, a 5xx front door, a rejected blue/green candidate. Kill switch `FORGE_ALWAYS_SHIP=0`. Memory `feedback_always_ship_live_builds.md`.
- Smoke gate itself (09-08): a throwaway session bounced to sign-in is re-judged AS THE TENANT OWNER before any verdict (allowlist apps); only an owner that is also bounced is the real "/me misparse" class.
- Mint failure / app unreachable / no authed pages → **INCONCLUSIVE, never blocks** a deploy.
- **Mint path**: Engine can't reach the Factory DB, so it POSTs `https://forge.{tenant}.ohmyunicorn.com/api/auth/oauth/google/_smoke` (in `forge_corp/api/routes/oauth_google.py`) guarded by header `x-forge-smoke-secret` (wrong/unset → 404). Shared secret in `/home/claude-agent/.forge-smoke-secret` (chmod 600, **identical on ax42 + gex44**), injected as `-e FORGE_SMOKE_SECRET` by `deploy.ax42.sh` (Engine) and `deploy.sh` (Factory). Absent secret ⇒ /_smoke stays 404 ⇒ smoke INCONCLUSIVE (never blocks).
- **Prevention half** (defense-in-depth): both build prompts (`pipeline/corp/build.py` + `pipeline/fast/fast_build.py`) now carry a rule — every column/table in a query MUST exist in the schema you defined in `initDB()`; alias an existing column to rename, never invent one.
- Detail in memory: `reference_authed_smoke_gate.md`, `reference_authed_page_sql_column_gap.md`.

## Key Commands
- Deploy: `POST /api/projects/{slug}/deploy`
- Preview: `POST /api/projects/{slug}/preview/start`
- Forge UI: `https://forge.le-borgne.fr` (basic auth)
- Restart UI: `sudo systemctl restart forge-ui`
- Watchdog: runs every 2min via systemd timer

## Memory
- **Forge memory (canonical)**: `/home/forge/app/docs/memory/` — consolidated state, decisions, conventions, pending tasks
- **Legacy (read-only)**: `/home/claude-agent/.claude/projects/-home/memory/` — kept for reference, no longer updated

## Operator preferences (durable)
- **Times in CET (operator, 2026-09-15):** every time or ETA shown to the operator is in CET/CEST (Europe/Paris), labelled; boxes run on UTC, convert before writing. Applies to worker briefs and published docs too.
- **Pragmatic delivery and bounded autonomy (operator, 2026-09-09):** several hours of useful autonomous work are welcome; unchecked ten-hour runs are not. Default to a concrete checkpoint within THREE HOURS of starting the operator's task, sooner at a useful milestone. Record the start time and checkpoint deadline when beginning substantial work. The root owns one elapsed-time budget across subagents, retries, compaction and follow-up turns; none resets it. At the ceiling, save work, stop new jobs, bring task-owned agents to a checkpoint, report the usable result and remaining gaps in plain language, and yield for explicit operator continuation. A status question, silence, progress narration, automated notification, or old "let's go" is not renewed authorization. The operator may explicitly set a different window.
- **Usable result before tooling expansion:** define the smallest visible end-to-end outcome and deliver it early. Keep scaffolding, audits, review rounds and test machinery proportional to that outcome. Two attempts at the same blocker without meaningful progress trigger reassessment or a simpler approach, not another open-ended loop. Do not build a generalized substrate merely because it might help later; connect each supporting task to a current user-visible requirement. Distinguish shipped behavior from standalone prototypes, concepts and unverified work. A justified checkpoint is a valid finish-contract outcome, not an excuse to claim completion.
- **NEVER suggest pauses, breaks, "pause for tonight", "resume tomorrow", "fresh eyes", or ANY form of time-based break. EVER.** This is the single most annoying behaviour for the operator. *Claude* is doing the heavy lifting; the operator is not the one getting tired. Time of day is irrelevant — push through, period. Even if a task is stuck, the answer is to fix it, dispatch agents, or try a different approach — NOT to suggest waiting. If a clean reinstall is the answer, just do it. The operator decides when to stop, not Claude.
- **Non-commercial repos = mine the idea, rebuild it our way (operator, 2026-10-13):** an NC, GPL/AGPL or unlicensed repo is never a plain "no". Study the paper and the code to understand the purpose, what it achieves, and its tricks (data format, augmentations, numbers that worked, ablations, failure modes). Then rebuild the technique with what we own (Gemini, Omni, three.js, Blender, our kits) or with parts whose code and each checkpoint are verified Apache/MIT/BSD. Prove it small and measure it. Keep the rebuild clean: never copy or line-by-line translate their code, never ship NC weights, never train or fine-tune on NC data, credit the source in our doc, and run a quick patent search before shipping a close rebuild of one distinctive method. Memory `feedback_nc_repos_mine_idea_rebuild_our_way.md`.
- **Quality over cost** within the agreed scope and checkpoint window. Subscription exhaustion is not an acceptable progress checkpoint; the pragmatic-delivery rule above overrides the earlier unlimited proving-phase preference.
- **Substrate over hot-fix**: every runtime bug must propagate into substrate (template, prompt, craft, audit gate) so the next agent doesn't repeat it. Hot-fix-only is a half fix.
- **Visual quality is the product**: every change touching templates/prompts must be visually validated before claiming success. "It builds and deploys" ≠ "it looks right".
- **Delegation:** work locally by default. Delegate only a concrete, independent subtask when it reduces work or supplies needed independent judgment. Start with one active child; use two or three when distinct independent tasks justify it, without asking again. Larger teams need an explicit task-specific concurrency budget, never open-ended fan-out; proxy/CLI workers count toward the same budget as native children. No recursive delegation by default. All workers share the root checkpoint deadline. Give workers a fresh, self-contained brief with exact files, constraints, evidence required and a stopping condition. Full-history forks are exceptional, never a default.
- **Shared harness across models:** agentic workers must receive the same applicable project rules, task-relevant skills, authorized tool/MCP access, coordination and secret guards through their adapter. Load skills selectively, not all at once. Preserve isolation and task-specific permissions; equal harness support does not grant broader authority. Missing wiring is an adapter gap to report or fix, not a reason to declare a model incapable. Verify the chosen lane rather than assuming every helper inherits the full setup.
- **Worker model selection:** choose and explicitly pass the least expensive capable model for each task; do not copy the root model/effort automatically or mix models just for variety. **Every Gemini call is Gemini 4 Argon (operator, 15 Oct 2026; never 3.8 Flash or 2.5):** agentic work through the Antigravity CLI (`agy4`), single-shot calls through the gateway with a thinking level (Gemini 4 refuses budgets; its thinking counts against max_tokens). Gemini 4 (`forge:build-gemini-4`, `-low`, `-high`) is eligible for bounded coding, investigation and review. Local builders use `forge-agent run --harness gemini --model forge:build-gemini-4 --repo <repo> --purpose <task> --task <brief>` with a bounded `--timeout`; since 14 Oct 2026 this runs Google's Antigravity CLI (`agy4`, `forge-hub/agent/AGY4.md`) with the shared rules, skills, Forge MCP and our guards bridged as agy hooks, every call to Vertex project forge-dev-492809 (Google grant); `FORGE_GEMINI_HARNESS=claude-code` or `--jail` = the old Claude Code lane. Proven locally with actual Gemini responses, MCP skill/coord calls, file edits, tests and a blocked secret-guard probe. `--harness gemini-proxy` remains the single-shot no-tools helper for tasks that need no tools. The local Gemini builder currently rejects optional `--jail`; never imply that it ran in a container sandbox. Use `gpt-5.6-luna` for narrow mechanical work, `gpt-5.6-terra` for exploration and bounded implementation, `gpt-6.1-sol` (Sol) for demanding implementation/debugging/review, and `gpt-6-astra` for unusually difficult architecture or reasoning. **Sol = `gpt-6.1-sol` (operator, 2026-09-30):** every Sol request runs GPT-6.1 Sol (Codex CLI >= 0.159.2; 0.156 gets a 400). `sol`/`solx` call it, and the Engine swaps `gpt-6-sol` and `gpt-5.6-sol` for it at launch (`cli/sonnet_retire.py` LATEST_VERSION, also inside `run_tracked_codex_cli`). `gpt-6-luna` (Codex CLI >= 0.156.0) is the GPT-6 option for the Luna tier; not benchmarked yet, so `gpt-5.6-luna` stays the Luna default until a measured run shows it is worth its cost. Claude CLI workers use `--model sonnet`, which is **Sonnet 5.5 only** on this box (alias pinned in `~/.claude/settings.json` since 2026-09-28; never Sonnet 5; the Engine still remaps Sonnet to Opus 5.5). **Haiku 5.5 (2026-10-08):** `--model haiku` = `claude-haiku-5-5` everywhere (alias pinned in `~/.claude/settings.json`; the Engine seam upgrades `haiku`/`claude-haiku-4-5` at launch): $0.10 in / $0.50 out per MTok, 1M context, default effort medium. Use it for classification, extraction, routing, yes/no gates, judges and cheap subagents at effort low or medium; `haikux "prompt"` one-shot, `review --by haiku` for the cheapest second look (same family, not independent), panel seat `haiku-local`. Always pass `--effort`: low for mechanical edits, medium by default, high only for creative or hard work (and for benchmarks, the same effort as the run it is compared with). Native Codex defaults are Terra/medium; explicitly select low effort for straightforward tasks and high only where the reasoning warrants it. Prefer a different family for independent judgment when useful. Escalate after evidence of a capability limit instead of repeated cheap retries; name unavailable models and use a supported alternative. Codex mixed-model spawns use `fork_turns="none"` with a self-contained brief; full-history forks inherit the parent's model and effort.
- **Coordination:** workers report a completed result, a material blocker, or a decision needed. Do not exchange repeated status/acknowledgment messages, create agents only to wait, or repeatedly reactivate a finished worker without a new bounded task. Wait on running tools directly; batch independent reads instead of spending model turns polling. The root keeps useful local work and integrates the result.
- **Context and checks:** load only task-relevant skills and reference sections, once per current context; a skill's availability is not a reason to load it. Use scoped searches and bounded output; keep full logs in artifacts. Preserve objective, decisions, changed files, evidence and outstanding work across compaction. Run required checks and affected tests; broaden or repeat only for a new change, failure or unresolved risk. Stop when the requested outcome is evidenced.

## Talking to other models in the CLI (2026-09-17)

Three model CLIs, same shape, all with full tool access and no approval prompts
(safety = the PreToolUse secret + coordination guards, not a sandbox):

| command | model | one-shot | extra flags |
| --- | --- | --- | --- |
| `astra` | Codex GPT-6 Astra | `astrax` | Codex flags |
| `sol` | Codex GPT-6.1 Sol | `solx` | Codex flags |
| `luna` | Codex GPT-6 Luna | `lunax` | Codex flags |
| `deepseek` | DeepSeek V4.1 Flash | `deepseekx` | `--effort low|high|max` |
| `gemini` | Gemini 4 Argon in Google's Antigravity CLI (default since 14 Oct 2026; 3.8 Flash requests are upgraded; `gemini-cc` = old Claude Code lane) | `geminix` | `--model forge:build-gemini-4{,-low,-high}` |
| `agy4` | the launcher behind `gemini`/`gemini4`: Antigravity CLI + relay -> alias `forge-agy-gemini-4` (Google grant) | `agy4 -p` | `--model`, `--effort low|medium|high`, `--worker`; doc `forge-hub/agent/AGY4.md` |
| (none) | Claude Haiku 5.5 (`claude-haiku-5-5`, via `claude-lean`) | `haikux` | Claude Code flags (`--effort low`, `--tools ""`) |

All four are executables in `~/bin`, not shell functions: `~/.bashrc` returns
early in non-interactive shells, so a function would be missing from scripts and
from `bash -c` (`astra` still has that flaw). `--ask-permissions` restores the
approval prompts. `deepseek` and `gemini` are Claude Code driving another
provider's endpoint, so every Claude Code flag passes through (`--continue`,
`--resume <id>`, `-p`).
Each has a persistent private profile (`~/.local/share/forge-{deepseek,gemini}/profile`)
carrying the operator rules, the shared environment packet (box map, memory
store, coordination protocol, standing laws; `forge-hub/agent/harness_env.py`),
a copy of `~/.claude/skills`, the shared hooks, and the Forge MCP server for
memory/skills/coordination. Docs: `forge-hub/agent/DEEPSEEK.md`, `GEMINI.md`.

Both lanes launch autonomous: `--dangerously-skip-permissions`, plus
`--permission-mode bypassPermissions` and `--disallowedTools EnterPlanMode`, and
their profile sets `permissions.defaultMode: bypassPermissions`. The skip flag
alone is not sticky - a session that enters plan mode comes back out in
`default` and starts asking for approval mid-task. `--ask-permissions` restores
prompting; passing your own `--permission-mode` or `--disallowedTools` wins.

Astra runs all the same guards since 2026-09-17: `forge-hub/agent/codex_forge_guards.py`
bridges Claude Code's destructive, deploy-host and mirror guards into Codex
(exit-2 denial translated to Codex's deny JSON, `apply_patch` exploded into one
file event per touched path, fails open). The guard scripts are not forked; the
Claude copies in `~/.claude/hooks/` stay the single implementation.
**No waiting parent (2026-09-20)**: `forge-hub/agent/codex_wait_guard.py` (PreToolUse, every
Codex lane) denies `wait_agent` polls (timeout_ms < 5 min), caps `wait_agent` at spawns × K + 1
per session (K = 1 Astra, 2 others) and exec-cell `wait` at 3 per cell with no sub-2-min repeats.
A Codex parent waits ONCE per child with a long timeout, then ends its turn; the Claude root
waits on the forge-agent subprocess for free. Kill switch `FORGE_WAIT_GUARD=0`, budget
`FORGE_WAIT_GUARD_K`. Denials log to `/tmp/codex_wait_guard.log`. Claude-lane twin
`~/.claude/hooks/wait_guard.py` (settings.json PreToolUse `Bash|TaskOutput|Read`, copied into the
DeepSeek and Gemini profiles at every launch): a bare `sleep N; <check>` turn outside a loop is
allowed twice per session then denied; `TaskOutput` / reads of a `tasks/<id>.output` file twice per
task then denied. Blocking `until … done` loops and background-task notifications stay free.

**Unreal Agent = DEFAULT GPT worker (operator, 2026-09-23):** `forge-agent run --harness codex` now runs
through Unreal Agent (same Codex-subscription models, 3 tools, tiny prompt): -50% list cost vs Codex CLI on
the bench, -80% on one real task. Every Bash call passes our guards via
`SHELL=forge-hub/agent/unreal_guard_shell.py`. No native MCP: since 2026-10-11 its workers reach the Forge
MCP server from Bash with `~/bin/forge-mcp` (= `forge-hub/agent/forge_mcp.sh`, Apify mcpc 0.7.0 in
`~/.local/lib/mcpc`; `forge-mcp --json tools-call memory_search query:="..."`), a private session per worker
in `.harness/mcpc` (closed when the run ends) that makes coord calls as the worker. No resume yet. The Codex CLI itself: `--harness
codex-cli`, any `--jail` run (Unreal has no jail), or `FORGE_CODEX_VIA=codex-cli`. Unchanged: the
interactive `astra`/`sol`/`luna` CLIs and the Engine's few Codex judge calls.
Memory `reference_unreal_agent_harness_assessment_2026_09_22.md`.

**Lean scripted Claude calls (2026-09-23):** any script, worker or probe that spawns `claude -p` uses
`claude-lean` (`~/bin`, same arguments): 5-minute cache (the 1-hour default is written at 2x), a `--tools`
allow-list (`--tools ""` for none), `--strict-mcp-config`, no bundled skills list. Engine code goes through
`run_tracked_claude_cli` (`cli/lean_launch.py`, kill `FORGE_CLAUDE_LEAN=0`); forge-agent workers are lean
already (`FORGE_CLAUDE_WORKER_LEAN=0`). Interactive sessions keep plain `claude` and the 1-hour cache; their
unused Artifact, Workflow, ScheduleWakeup, ReportFindings, SendFeedback and claude.ai connectors are off in
`~/.claude/settings.json`. Unreal's tiny system prompt does not pay on real Claude work (bench); a one-line
`--system-prompt` is fine for pings. Memory `reference_claude_code_lean_mode_bench_2026_09_23.md`.

**Advisor tool (2026-10-08):** `claude --advisor opus` (or setting `advisorModel`, or `/advisor opus|off`) lets a cheaper
main model consult a stronger one at decision points (plan, repeated failure, before "done"). Proven on this box: CLI
2.1.284, subscription, `-p --model sonnet --advisor opus` = Sonnet 5.5 + Opus 5.5. The advisor must rank at or above the
main model (an Opus root can only take Opus/Fable); Haiku 5.5 on either side needs CLI >= 2.1.293. The model picks when to
call it (ask in the prompt; no cap); every call re-reads the full transcript uncached, so cost grows with context. Anthropic
API only: not through the DeepSeek/Gemini gateway lanes; off when feature-flag fetching is off (`DISABLE_TELEMETRY`); kill
`CLAUDE_CODE_DISABLE_ADVISOR_TOOL=1`. Not wired into the Engine or forge-agent yet (bench awaits operator). There is no
`--subagents` flag. Memory `reference_claude_code_advisor_tool_2026_10_08.md`.

**Max plan API credits (2026-10-08):** each Max 20x plan gives $200/month (Max 5x $100) of Claude Platform credit, claimed on
claude.ai (Settings > Billing > API credits > Link organization) into ONE Console org, permanent choice. Covers the API,
Batches, Managed Agents, Agent SDK and `claude -p` run with that org's API key; NOT Claude Code signed in with the plan,
not extra usage. No rollover, spent before purchased credits, requests stop when out unless the org has bought credits.
Not claimed yet. Memory `reference_max_plan_monthly_api_credits_2026_10_08.md`.

Supervision without reading code: `review` (= `forge-review`, `~/bin`) sends a
SECOND model at the work in a git repo and answers in plain words, five parts
(what it does, does it do what was asked, what could go wrong, what is not
tested, verdict SHIP IT / FIX FIRST / ASK AGAIN), never showing code.
`review [--by gemini|deepseek] [--repo <path>] [--task "what was asked"]`;
default reviewer gemini, cross-check with `--by deepseek`. Reviews uncommitted
work, else the last commit, else the root commit. Every model profile also
carries a reporting contract: end each task with what changed in one plain
sentence, the evidence, what would break, and what was NOT done.

Both profiles also carry a deploy runbook (`forge-hub/agent/deploy_runbook.md`,
injected by `harness_env.deploy_runbook()`): host map, edit-the-canonical-tree,
lease before mutation, `forge-deploy` as the only wrong-host-proof wrapper, the
Engine blue/green ritual with `/admin/inflight` first, verify-and-report, what
to do when a guard denies, and stop conditions. Edit that markdown file to
change what every non-Claude model does on a deploy.

## DeepSeek local harness (2026-09-11)

- Interactive CLI: `deepseek` (= `forge-deepseek`, DeepSeek V4.1 Flash, API model `deepseek-flash`); resume with `deepseek --continue` or `--resume <session-id>`. `--effort low|high|max` selects reasoning effort. One-shot: `deepseekx "prompt"`.
- Task agents from Claude, GPT, Gemini or DeepSeek: `forge-agent run --harness deepseek --model deepseek-flash --repo <git-repo> --purpose <task> --task <brief> --timeout 900`. Same isolated worktrees, shared Forge MCP memory/skills/coord, hooks and finish rules. DeepSeek orchestrators can call the other `forge-agent` harnesses; workers do not recursively delegate.
- Thin adapter: `forge-hub/agent/deepseek_worker.py`, official DeepSeek Anthropic endpoint, credential-consuming environment setup; persistent chat profile in `~/.local/share/forge-deepseek/profile`. No new agent loop. Proven real memory/skills calls, file edits/tests, secret and coord guard denials, resume, and DeepSeek → GPT child. No Docker jail support on this local lane.
- Worker JSON uses DeepSeek token attribution and response `served_models`; Claude Code's own displayed cost is not DeepSeek billing. Use provider billing. Details: `forge-hub/agent/DEEPSEEK.md`.

## MÖBELKRIG game repo: one reference main (operator, 2026-09-27)

Repo `~/forge-build/ikea-fps-20260925/game` (the flat-pack store FPS). `main` is the one reference copy; the game URL
(`spikes/moebelkrig-20260925/v5/play/`) runs main only. Everything goes through `moeb` (`~/bin/moeb`, rules in the
repo's CONTRIBUTING.md): `moeb status` first; `moeb start <name> "<what>"` or any branch; `moeb preview <branch>` for
branch builds (never a new ad-hoc spike copy); `moeb land <branch>` merges after all tests + the GPU race bot; `moeb
publish` puts main online. A git hook refuses any other move of main; `publish-preview.sh` refuses the game URL
outside `moeb publish`. Player-visible changes: preview, operator OK, then land. Versions page:
`spikes/moebelkrig-20260925/versions/`.

## Personal substrate skills

Loaded from `/home/claude-agent/.claude/skills/`. Select by the task-specific trigger; do not load this entire list. The short entrypoint routes to details only when needed:

- **ai-film-craft** — applies when building/reviewing video-generation pipelines, prompts, storyboard lanes, or anything that spends on video models
- **forge-design-language** — applies when building any UI, generating CSS, or reviewing frontend
- **cl4r1t4s-reasoning** — diagnose AI harness behavior or audit consequential assumptions
- **impeccable-craft** — polish frontend design or user-facing copy
- **forge-thought-patterns** — plan complex Forge work or diagnose recurring cross-component failures
- **omni-beat-vfx** — applies to any VFX beat on real talking-head footage (Omni gens + the deterministic lane, gates, clean-edge paste, colour + sound laws)
- **gfx-beat-deterministic** — applies to drawn/graphic beats (badges, stickers, panels, logos, rocket scenes, orbs) and to the Director's `gfx` graphics-beat lane
- **sim-town-games** — applies when building or fixing a tycoon, business-sim or town-sim game on the Forge Game Engine (new game = pack + town seed; laws, crowd, shopfronts, release copy)
- **code-video** - applies when a video shot needs exact motion, timing, physics or a precise camera move, or a brand logo on a product (three.js preview, smooth camera rig, Omni 1.1 edit; Veo first+last frames cannot do choreography)

Each skill is a self-contained SKILL.md with frontmatter declaring its triggers.

## Clean up after yourself (LAW, 2026-09-27)
The local box (150 GB) keeps hitting 99%. A full disk kills every session's tool output. Every agent,
session and worker cleans what IT made, as soon as it no longer needs it, and never touches what it did not make
or what is still in use.
- **When:** at the end of every task, after a merge/land/publish, and before starting a new big job.
- **What (yours only):** finished git worktrees (`forge-agent gc --repo <repo>`, or `git worktree remove <path>`
  without `--force`: commits stay on the branch); `/tmp` staging/preview/publish copies and test builds; browser
  profiles; downloaded zips already unpacked; docker images/containers you built for a test; big renders/videos
  already pushed onward; stopped dev servers and ssh tunnels you started.
- **Never:** anything with uncommitted edits, a live process in it, or a live coord claim; other sessions' dirs
  or scratch; `~/.claude` transcripts, `~/.codex/sessions`, `~/.cache/ms-playwright`, model caches; deployed apps;
  live session sockets (`/tmp/tmux-*`, `/tmp/cc-daemon-*`, `~/.hq/`): deleting one stranded 21 tmux sessions until
  10 Oct 2026 (now in `~/.hq/legacy/`, attach with `tmuxl`).
  If unsure whose it is, leave it and `coord note` it.
- **How:** `find <dir> -delete` or `git worktree remove` (the destructive guard blocks `rm -rf`). Check
  `df -h /` when you finish; under 15 GB free, say so in your report.
- **Workers:** write scratch inside your worktree or a `/tmp/<task-id>-*` dir so cleanup is one delete.
- Memory `feedback_clean_up_after_yourself.md`.

## Secrets never enter a transcript (LAW, 2026-09-07)
A PreToolUse hook (`~/.claude/hooks/secret_guard.py`, matcher Bash|Read|Grep, tests in `hooks/tests/test_secret_guard.py`) DENIES reading credential files (`.credentials`, `~/.forge-secrets/`, `.forge-smoke-secret`, `auth.json`, `.env*`, `*.key`, `*.pem`, ssh private keys, `.netrc`, `.pgpass`, `*secrets*.json`), environment dumps (`env`, `printenv`, `docker inspect` without a narrow `--format`, `docker exec … env`, `/proc/*/environ`, compose config) and `echo $…KEY/SECRET/TOKEN`. Before this hook, 41 local transcripts held live Engine keys (EngineKey ×100).
- Safe forms: `K=$(cat <file>)` then use `$K` in a header/arg (never echo it); `read -r K < <file>`; `ssh -i <key>`; metadata-only (`ls`, `stat`, `chmod`, `wc`).
- Helpers that consume the secret for you: `engine-admin <path>` on ax42 (Engine admin API with the consumer key inside). Add a helper rather than reading a file.
- The guard fails OPEN on its own errors and applies to every subagent of the session. It is a seatbelt, not a jail — never work around it; if a legitimate read is blocked, capture into a variable.

## Multi-Claude coordination (durable)

Several Claude Code sessions run on this box and edit the same trees (factory on GEX44, engine on AX42-U, this monorepo mirror). A filesystem bus at `~/.claude/coord/` prevents collisions. The `coord` CLI (`~/.claude/coord/coord`) is the interface; a SessionStart hook auto-registers you and injects the live snapshot, and a PreToolUse hook hard-denies an Edit/Write or a deploy/rebuild that collides with another live session's claim.

**Protocol — before you WRITE / REBUILD / RESTART a shared resource:**
1. `coord check <host:path>` — is anyone else on it? (exit 3 = conflict)
2. `coord claim <host:path> [--note "..."]` — take it (exclusive; auto-expires, TTL 30m, refreshed by heartbeat).
3. Do the work, then `coord release <host:path>` (or `--all`).
4. `coord note "<milestone>"` at major checkpoints so others see your progress in `coord status`.

**Rules:**
- Reads need NO claim — you only claim what you will mutate.
- Resources are EXACT files (`gex44:apps/x/f.py`) or EXACT dir prefixes (`gex44:apps/x/`). No globs. Hosts: `gex44`, `ax42`, `local`, `prod`, `service` (e.g. `service:forge-corp-factory`).
- The guard fails OPEN — if `coord` errors it never blocks your tools. It only bites on a real, live, conflicting claim.
- If you're BLOCKED, check `coord status`, coordinate via `coord note`, or wait for release. Override only after confirming with the other session.
- Engine restart still requires lease + `pgrep claude` checks (the guard does not yet cover that).

**Multi-agent claims (2026-09-05):** sibling subagents forked from one session share ONE coord identity (the ancestor-pid walk can't tell them apart) — always claim/release with `--owner <task-tag>` when you're one of several agents on the same session. Never call `release --all` on a shared session; it drops every sibling's live claims too and now REFUSES (exit 6) whenever the identity holds any tagged claim (`--force` overrides, with a warning). Forge-agent workers (`forge_agent.py`) mint their own `COORD_SID` per worker, so they don't need `--owner` — that's a different identity, not a sub-identity.

## For non-Claude agents (Codex, Gemini, ...)

This file is a generated rendering of `CLAUDE.md` for harnesses that read
`AGENTS.md` natively instead. It carries the same rules — they apply to you
too. On top of them:

- **Use the `forge` MCP server before acting.** It is mounted in your CLI's
  config (Codex: `[mcp_servers.forge]` in `~/.codex/config.toml`). Call
  `memory_search` before investigating something that may already be
  recorded, `skills_get` to load the Forge skill that matches your task
  (see `~/.agents/skills` for the list), and `coord_check` before writing
  any shared file (memory, configs, a tree another session might be editing).
- **`edit_then_run` (opt-in).** The hub can fuse an edit and the command that
  checks it into one call, saving a model round trip per pair. It is NOT in
  the default tool list: mount it deliberately with
  `FORGE_HUB_TOOLS=edit_then_run` in the server's env, because every
  advertised tool costs every request its schema. Benched 2026-09-22 it cut
  turns (30 -> 26) and RAISED cost (~$0.0105 -> ~$0.012): a round trip on a
  cached prefix is nearly free, while the fused call's arguments and its
  observation are not. Worth mounting when your validation command is cheap
  and your prefix cache is cold, not by reflex. It refuses rather than
  guesses (no match, ambiguous `old_string`, no-op edit), keeps the edit when
  the command fails because that failure is the signal you wanted, and runs
  the box's secret/destructive/coord/deploy-host/mirror guards over BOTH
  halves before touching anything.
- **Never write memory files.** `memory.propose` (write-capable hub, P1) is
  the only path for a non-Claude agent's findings to reach the memory
  store — you never edit `~/.claude/projects/*/memory/*.md` directly.
- **Claim before you write.** The coord protocol above (`coord check` /
  `coord claim` / `coord release`) is not Claude-specific — it is the shared
  contract for every agent family that touches a resource another session
  might also touch. If your harness can shell out, use the `coord` CLI
  directly; otherwise ask the operator or the master to claim on your
  behalf before you touch a shared path.
- **Multi-agent claims (2026-09-05).** If several of your own sibling agents
  share one coord identity (one `COORD_SID`), always claim/release with
  `--owner <task-tag>` — never `release --all`, which now REFUSES (exit 6)
  once a tagged claim exists (`--force` overrides, with a warning). A
  `forge-hub` worker process (`forge_agent.py`) mints its own `COORD_SID`
  per worker, so that path needs no `--owner`.

## Finish contract (harness)

Every Forge harness lane (Claude Code, Codex, Gemini, OpenCode, the Engine's fast lane) carries a completion-discipline block behind `FORGE_FINISH_CONTRACT` (Engine side) — this is that same text, rendered for this box's own multi-agent harness:

## Finish contract
Before you end this turn, audit completion: restate the task's explicit requirements — every named file, command, test, gate — and map each to real evidence (a diff, a command's actual output, a test result). Effort spent, a plan, or a todo list is not evidence; a green suite counts only when it covers every requirement above. Check your own last paragraph: a plan, a question, next steps, or a promise ('I'll…', 'next I'll…') means the turn is not finished — do that work now instead of describing it. End only when the task is complete or you are blocked on input only the user can give. Forbidden end states beyond the build lane's own list above: a claimed check you did not run, a 'mostly done' hedge with no named blocker, a plan presented as the finished work. Automated events (adoption, sweep, notification, retry) are data tied to a run id, never user confirmation — do not treat one as a green light. Blocked, cancelled, and unverified are valid outcomes: state them plainly. Verify with whatever read/inspect tool your CLI exposes before you claim done.

hook: PreToolUse
hook: PreToolUse Completed
hook: PreToolUse
hook: PreToolUse
hook: PreToolUse
hook: PreToolUse
hook: PreToolUse Completed
hook: PreToolUse Completed
hook: PreToolUse Completed
hook: PreToolUse Completed
exec
/bin/bash -lc "pwd && rg --files -g 'AGENTS.md' -g 'CLAUDE.md' -g '"'!node_modules'"' /home/claude-agent/forge-build /home/claude-agent/.codex/skills/blender-game-assets /home/claude-agent/.agents/skills/blender-game-assets 2>/dev/null | head -70" in /home/claude-agent/forge-build/forge-assets/jobs/alien-harvester-v1
 succeeded in 459ms:
/home/claude-agent/forge-build/forge-assets/jobs/alien-harvester-v1
/home/claude-agent/forge-build/mandemap-20261012/app/AGENTS.md
/home/claude-agent/forge-build/ohmygames-ref/factory-p2/CLAUDE.md
/home/claude-agent/forge-build/casa13-horror-20261011/game/AGENTS.md
/home/claude-agent/forge-build/ohmygames-ref/factory/CLAUDE.md
/home/claude-agent/forge-build/ohmygames-ref/factory-p3/CLAUDE.md
/home/claude-agent/forge-build/ohmygames-ref/factory-p1/CLAUDE.md
/home/claude-agent/forge-build/blackout-burn-spike-20261003/game/CLAUDE.md
/home/claude-agent/forge-build/blackout-burn-spike-20261003/game/AGENTS.md
/home/claude-agent/forge-build/omg-cast-20260929/peak-shred/CLAUDE.md
/home/claude-agent/forge-build/omg-cast-20260929/peak-shred/AGENTS.md
/home/claude-agent/forge-build/afterworld-chain-20261010/CLAUDE.md
/home/claude-agent/forge-build/kite-p4ff5f013-20261008/game/CLAUDE.md
/home/claude-agent/forge-build/kite-p4ff5f013-20261008/game/AGENTS.md
/home/claude-agent/forge-build/julia-p10ad-20261014/CLAUDE.md
/home/claude-agent/forge-build/escale-album-20261002/app/CLAUDE.md
/home/claude-agent/forge-build/escale-album-20261002/app/AGENTS.md
/home/claude-agent/forge-build/escale-pro-20261004/wt/studio/CLAUDE.md
/home/claude-agent/forge-build/escale-pro-20261004/wt/studio/AGENTS.md
/home/claude-agent/forge-build/escale-pro-20261004/wt/CRAFT/CLAUDE.md
/home/claude-agent/forge-build/escale-pro-20261004/wt/CRAFT/AGENTS.md

hook: PreToolUse
hook: PreToolUse
hook: PreToolUse
hook: PreToolUse
hook: PreToolUse Completed
hook: PreToolUse Completed
hook: PreToolUse Completed
hook: PreToolUse Completed
exec
/bin/bash -lc 'cat /home/claude-agent/.agents/skills/blender-game-assets/SKILL.md && for p in /home/claude-agent/forge-build/AGENTS.md /home/claude-agent/forge-build/forge-assets/AGENTS.md /home/claude-agent/forge-build/forge-assets/jobs/AGENTS.md /home/claude-agent/forge-build/forge-assets/jobs/alien-harvester-v1/AGENTS.md; do if test -f "$p"; then cat "$p"; fi; done' in /home/claude-agent/forge-build/forge-assets/jobs/alien-harvester-v1
 succeeded in 0ms:
---
name: blender-game-assets
description: "Create Blender game assets and export GLB kits with baked textures; validate renders against reference images."
metadata:
  provenance: adapted
---

# Blender game assets, headless

Distilled from TheLongSilence's Blender pipeline (162 m ship, carved rocks, a
cabin interior kit, 13 ground materials) into a headless-first recipe for
Forge. **No GUI, no BlenderMCP socket** — Forge's Blender lives on gex44 with
no display, and `blender -b` is the one thing BlenderMCP's addon refuses to
run under. Everything below is a plain `blender -b --python` call or the
gex44 exec service.

For architectural construction kits, read `construction-kit` and its tested
source builders. It supplies cross-family profile/damage/UV contracts and
consumer-side checks; use only the relevant elements.

For a connected playable scene, also read `visual-game-loop` and its
`references/whole-scene-blender.md`: the user-approved harbour recipe combines
scene/object references, photographic materials and coherent Blender construction
with gameplay verification. Reuse good hero assets; author the surrounding place
as a whole rather than assuming a larger modular catalog will fix assembly.

## Read only what the task needs

| When | Read |
| --- | --- |
| A dense model must become a light one that keeps its look (normal + AO transfer) | [high-to-low baking](reference/high-to-low-baking.md) |
| Preparing UVs or a cage, or a bake shows seams, black faces, wrong highlights | [baking and diagnostics](reference/baking-and-diagnostics.md) |
| Choosing texture or mesh formats, or the asset is slow to load or heavy in GPU memory (KTX2, WebP, meshopt, Draco) | [asset delivery](reference/asset-delivery.md) |
| Before any long bake or scripted export pipeline | [preflight and recovery](reference/preflight-and-recovery.md) |
| The asset looks right in Blender and wrong in the game, or the cause could be either | [runtime parity and diagnostics](reference/runtime-parity-and-diagnostics.md) |
| The asset will be judged by eye (hero prop, character, building, environment) | [author and critic loop](reference/critic-loop.md) |
| Terrain, cliffs or rocks should look weathered (branching gullies and ridges, no simulation) | [terrain erosion](reference/terrain-erosion.md) |

These seven are loaded on demand, not by default. Five are ported from vercel-labs/vgpu (see Attribution); terrain erosion uses Rune Skovbo Johansen's filter (MPL 2.0, `scripts/erosion/`).

### Choose how to carry each detail before any bake

| Detail | Carry it as |
| --- | --- |
| Silhouette, openings, broad edges, tuft dimples, piping, moving parts | Real low-poly geometry |
| Fine bevel curvature and shallow relief the triangle budget cannot afford | Tangent-space normals baked from the dense source |
| Permanent cavities and contacts inside a rigid assembly | Baked AO |
| Fabric weave, grain, micro-texture | The existing tiled map at its own scale, never re-baked into a unique atlas |
| Contacts that change, directional shadows | Runtime lighting |

**Pick the cheapest carrier that passes the look check. Being under a texture budget is not a reason to
spend it.** A unique normal atlas is the last resort, for detail the triangle budget cannot hold: a
1024 px RGBA8 map with mips is 5.6 MB of GPU memory per asset, and it replaces a tiled map that every
copy of the material could have shared. If you try a bake and geometry plus the source's tiled maps
looks as good, ship the geometry and say so in the report.

Measured (2 Oct 2026, STRANDMON armchair, 233k to 12k triangles, two Astra runs, same brief): dimples kept
as geometry with the two original 256 px tiled maps = 0.46 MB download, 0.7 MB GPU textures. Same detail
baked into a unique 1152 px normal map = 1.19 MB download, 7.4 MB GPU textures, slightly closer from across
the room, slightly weaker up close, and a blind judge preferred the geometry version.

## Which representation: decide before modelling

For furniture reconstructed from photographs, datasheets or assembly instructions,
read [Furniture reconstruction checks](reference/furniture-reconstruction.md)
before generating geometry. It covers panel-relative coat-hook placement,
interior compartment counts and optional door/drawer articulation.

| Need | Representation | Why |
| --- | --- | --- |
| Hero or enemy character with a walk and attacks | imported rigged mesh (this skill, or the CC0 library: Quaternius, KayKit, Mixamo motions) | skinning, retargetable clips; procedural rigs read as mannequins |
| Weapon, prop, creature variant where silhouette, sockets, collision or code-driven variants matter | procedural three.js geometry or a small GLB kit part | controllable, cheap to vary per instance |
| Concept, icon, backdrop, card art | a generated 2D image used directly | never rebuilt as geometry |
| A reference image whose visible FORM must become a code model | `img2threejs` with its gates; say the result is a reconstruction, not extracted geometry | likeness is judged, not measured |

Pick once at the blueprint or stack-selection stage and record it with provenance (source, licence,
metres per unit, forward axis). Design after MengTo/Skills build-hybrid-game-assets (MIT).

## 1. The recipe

The concept image is the spec, not decoration. For every asset in a kit:

1. **Model every piece in Blender from the concept image** using loft/recess/
   greeble (§3). Grey-clay render it before touching a texture (§4, §10) —
   box-stacking hides under any lighting rig except flat grey + one hard key.
2. **Use a fitting registered photographic texture set or an image model** for
   photographic surfaces (ground, foliage, cloth). Record origin, license and
   physical scale; matching normal/roughness maps must remain aligned. Use an
   existing suitable licensed scan before generating a replacement; use Cycles nodes only for what
   genuinely varies by geometry (edge wear, per-plate tone), and flatten
   before export (§6).
3. **Screenshot-vs-concept loop.** Render next to the concept, same angle if
   possible, compare. Judge by measured numbers where you can (§10: tone
   percentiles, AO floor, draw calls), by eye where you can't (silhouette,
   chamfer read, material believability). Iterate until it reads as the
   concept, not until it "looks 3D".
4. **Export once clay AND texture both hold up.** A model that's flat-correct
   in clay but goes muddy after baking has a material bug, not a modelling
   bug — don't re-model to fix a bad bake.

## 2. Headless setup on gex44

Blender 5.2.0 LTS, x64, RTX 4000 Ada, at
`/root/blender-spike/blender-5.2.0-linux-x64/blender`.

**A. Direct subprocess** (matches the source game's `build_*.py` pattern):
```python
BLENDER = "/root/blender-spike/blender-5.2.0-linux-x64/blender"
cmd = [BLENDER, "--background", "--factory-startup", "--python-exit-code", "1", "--python", __file__,
       "--", "BUILD"] + extra_args
# script: `if 'BUILD' in sys.argv: blender_main(...)` else `drive(...)`
```
Split into `drive()` (host: subprocess + result check) and `blender_main()`
(only imports `bpy`/`bmesh` — importing them outside `-b` crashes with no
display). **Without `--python-exit-code 1`, Blender can exit 0 after a Python error.**
Set that flag, check the exit code and logs, and verify fresh output files.
Mesh/export validation still matters: a successful process is not visual proof.

**B. gex44 exec service** (`/opt/astra-blender/blender_exec_server.py`,
loopback `:8793`, token-guarded): POST a python script, get back stdout plus
render paths, for interactive iteration without a subprocess per call. Same
headless constraint — the script is a `blender_main`-shaped body, no GUI code.

Outputs land in the app's `public/models/` (or the GameKit pack's asset dir)
as `.glb` + `.webp`. Draft render: 64 samples / 1280x720 ≈ 2 s on an M-series
GPU (source game, Apple Silicon) — **gex44/RTX 4000 Ada timing is
unmeasured; get one real number before quoting a render budget.**

## 3. Modelling: loft, recess, greeble

Three techniques, in order of impact.

**Loft cross-sections, never stack primitives.**
```python
def oct_ring(w, h, cx, cz):
    a, b = w * 0.5, h * 0.5
    return [( a, b-cz), ( a-cx,  b), (-(a-cx),  b), (-a,  b-cz),
            (-a, -(b-cz)), (-(a-cx), -b), ( a-cx, -b), ( a, -(b-cz))]

def loft(name, sections, mat):    # sections: (y, w, h, cx, cz, dz)
    bm = bmesh.new()
    rings = [[bm.verts.new((x, y, z+dz)) for (x, z) in oct_ring(w, h, cx, cz)]
             for (y, w, h, cx, cz, dz) in sections]
    for A, B in zip(rings, rings[1:]):
        for i in range(8):
            j = (i+1) % 8
            bm.faces.new((A[i], A[j], B[j], B[i]))
    bm.faces.new(list(reversed(rings[0]))); bm.faces.new(rings[-1])
```
Keep the profile **stepped, not tapered** — a parallel midbody, a shoulder, a
blunt end. Steps are what the eye measures scale against.

**Cut detail into the skin**, not glued on top:
```python
sel = [f for f in bm.faces if pick(f)]
bmesh.ops.inset_region(bm, faces=sel, thickness=1.2, depth=0.0,
                       use_even_offset=True, use_boundary=True)
for f in sel:
    bmesh.ops.translate(bm, verts=list(f.verts), vec=f.normal.normalized()*-0.7)
    f.material_index = i_recess
```

**Detail hierarchy, including restraint.** Primary masses, panel bays, fine
greebles at roughly **1/60 of the asset's longest dimension**. Zone them and
**leave clean plate** — greebling every face reads as noise; detail only
registers against something undetailed. Flat-shade hard surfaces.

**A Bevel modifier does nothing on face-soup geometry** — bmesh ops emit
every face with fresh vertices, no shared edges to bevel. Weld first, then
chamfer:
```python
def weld_bevel(ob, width=0.0025, segments=2, angle=math.radians(31), dist=2e-5):
    me = ob.data
    bm = bmesh.new(); bm.from_mesh(me)
    bmesh.ops.remove_doubles(bm, verts=bm.verts, dist=dist)   # joins coincident boxes
    bm.to_mesh(me); bm.free(); me.update()
    apply_bevel(ob, width=width, segments=segments, angle=angle)
```
A 90-degree edge returns no highlight from any light — the single largest
thing separating "modelled" from "a pile of boxes". `o.scale = size` then
Bevel makes pillows (Bevel is local-space) — `transform_apply(scale=True)`
before bevelling.

## 4. Kit-bake pipeline (interior_bake/ distilled)

For a repeated kit (a corridor, a room set, a prop family), stage the build
so nothing bakes twice and occlusion bakes into the placement it ships in:

1. **Tile geo** — hi-poly tile (plates, rivets, hatches) as a **3x3 array**
   so only the centre tile bakes and its edges see real neighbours (no
   cross-fade). Panel tile 2.0 m, deck tile 1.5 m in the source kit.
2. **Tile bake** — bake **height by ray-tracing an Emission shader whose
   colour is world-Z**, not a tangent-space NORMAL bake off a flat cage: a
   vertical panel-gap wall has no cross-section for a downward ray, so a
   NORMAL bake off a plane records nothing for it. Height + a prefilter gives
   both the seams and a slope a texel wide.
   ```python
   sc.render.bake.use_selected_to_active = True   # hi -> flat lo plane
   sc.render.bake.cage_extrusion = 0.05
   ```
3. **Compose** (numpy) — prefiltered normal from height (clamp depth *before*
   differentiating: an undamped 26 mm slot over two texels is a normal lying
   flat, rendering as a crawling black slit); crown/cavity masks drive wear
   and grime; procedural stencils (part numbers, hazard stripes) into albedo.
4. **Kit** — parametric part builders on a shared profile/loft/box library
   (`Part`-style primitives, per-edge bevel, a material "slot" tag).
5. **Props / assemble** — instantiate every master once, `weld_bevel` each
   with a **hand-tuned width per part class** (finer on small props — a
   2.5 mm round-over eats a 6 mm book board), lay the kit out at its in-game
   transforms *before* baking so occlusion matches what ships.
6. **UV + AO bake**:
   ```python
   def unwrap_and_pack(masters, res=2048):
       for ob in masters.values():   # per-object smart UV project, then:
           ...
       bpy.ops.uv.average_islands_scale()
       bpy.ops.uv.pack_islands(margin=0.006, rotate=True)

   def bake_kit_ao(masters, occ, res=2048, dist=1.5, samples=128):
       sc.cycles.samples = samples
       # AO node -> Emission -> Material Output, per material, bake EMIT
   ```
   **AO bakes along the surface normal — wind kit-hull skin facing INTO the
   room**, or it bakes unoccluded everywhere (open space). **Floor-lift the
   result** — occlusion is a modulation, not a shadow; anything reaching
   pure 0 paints a black line lighting can never recover
   (`a2 = 0.34 + 0.66*a**0.85`).
7. **Clay check** before any texture or bake is trusted (§10).

**Texel density**: panel shipped 2048 px / 2.0 m = **1024 px/m**; deck
1024 px / 1.5 m = **683 px/m**; the interior kit's UV/AO atlas ran at
**4096 px** (the bake function's own default is 2048 — override per project,
don't trust a library default). Pick texel density from viewing distance: a
corridor the player's shoulder passes within 40 cm of needs more than a
ceiling never seen close.

## 5. Rocks and foliage

**Rocks** (`build_rocks.py`): carve, don't deform a sphere — a deformed
icosphere is convex-ish every time (the "potatoes" problem). Instead: dense
icosphere → `bmesh.ops.bisect_plane(..., clear_outer=True)` several times for
fracture faces (family-dependent: slab/block/boulder/column/shard) → smaller
bisects near corners for chips → two octaves of `mathutils.noise.noise`
displacement along the normal → `REMESH` (voxel) to heal cuts into one
manifold → `DECIMATE` to a triangle budget → `shade_smooth_by_angle` so
fracture edges stay sharp → bake AO to a `BYTE_COLOR` vertex attribute
(spread instances apart *before* baking — stacked at the origin they occlude
each other into a mean of 0.2) → normalise so the longest axis is 1 and the
low point sits at 0. Ship **8-11 variants across 3 LODs** (full, ~500 tri,
~160 tri) in one GLB, `export_vertex_color='ACTIVE'`, no materials — AO rides
in `COLOR_0`, the shader supplies the surface.

**Foliage** (`pack_leaf.py`): pack an image-model leaf-cluster cutout (RGBA,
transparent bg) into a 512x512 lossless atlas. Normalise each RGB channel's
mean over opaque pixels to 0.5, so the image contributes *variation about the
palette* rather than its own green. Dilate outward into the transparent
margin — bilinear alpha filtering averages the last opaque texel with its
transparent neighbour, and a black neighbour puts a dark fringe on every
edge. Ten dilation passes covers a 512-texel margin at any mip seen.

## 6. Materials

**Procedural (Cycles-only, geometry-driven):** per-plate tonal variation +
pointiness edge wear, the two nodes that make paint look built:
```python
vor = nt.nodes.new("ShaderNodeTexVoronoi"); vor.inputs["Scale"].default_value = 0.16
# RGBToBW -> MapRange 0.9-1.1 -> Multiply into base colour: plate batches
# never quite match, and that mismatch is most of what reads as "welded".
geo = nt.nodes.new("ShaderNodeNewGeometry")
pr = nt.nodes.new("ShaderNodeMapRange")   # From 0.49-0.56, clamp, -> wear factor
nt.links.new(geo.outputs["Pointiness"], pr.inputs["Value"])
# mix toward bare metal + drive Metallic up: free on every convex corner,
# exactly where paint goes in life.
```
Also: bleach on sun-facing normals (`dot(Normal, sun_dir)`), soot along an
object-space axis. **These do NOT survive glTF export** — three.js never
sees the node graph. Bake to a texture before export, or export flat base
colours per material bucket and let the app's own shader apply bleach/soot
from world position (what the source game does).

**Image-model derived** (ground, cloth, rock faces): one generated albedo is
the only photographic input, everything else *derived* in numpy so it can't
disagree with it:
- `height_from_albedo` — 3 band-passed luminance scales (fine/mid/coarse),
  weighted toward the middle — "dark is deep" is the prior every
  albedo-to-normal tool uses and it holds for ground.
- `normal_from_height` — central difference of the height field.
- `ao_from_height` — horizon-based, 16 directions, cone-stepped march.
- `roughness_heuristic` — dust in cavities (rough), exposed faces polish
  (less rough), clamped to an art-direction matte floor.
- **Seam fix in the gradient domain**, not by blending pixel values: take the
  gradient, force it periodic across the wrap by killing the seam's jump
  over a margin of a few px (weight ramps 0→1 away from the seam), then
  FFT-Poisson-integrate back. Mismatch lands in the lowest-frequency mode
  (an invisible ramp) instead of a visible strip at the border — a wide
  margin instead draws bright bars through the derived occlusion.

An image model asked to paint colour onto a rendered height map **redraws
the geometry** (measured: same style, every stone somewhere else). Asked to
*colourise* a flat, shading-free render of the SAME image, it keeps every
stone in place — colourise, don't paint-over, when height must register to
albedo.

## 7. Lighting and camera

**Void/hero lighting**: one hard key (`SUN`, angle ≈ 0.9°), a large weak
fill tinted toward the key's complement, a cold rim so nothing dissolves
into the background. Shadows never fully black. **Camera on the key side** —
a hero angle from the shadow side is carried by fill and reads washed out.

**Clay/QA lighting** (three `SUN`s: key, rim, bounce from below) — the
bounce matters because half of any interior's surfaces face down (an
overhead console, a coaming's underside) and key+rim alone renders them as
unreadable black.

**Camera from the bounding box, never by hand** — hand-placed cameras end up
inside geometry, costing **80x render time** (near-field bounces: 166 s vs
2 s measured):
```python
pts = [o.matrix_world @ Vector(c) for o in meshes for c in o.bound_box]
lo = Vector((min(p[i] for p in pts) for i in range(3)))
hi = Vector((max(p[i] for p in pts) for i in range(3)))
ctr = (lo + hi) / 2; rad = max((p - ctr).length for p in pts)
cam.location = ctr + direction * (rad / math.tan(cam.data.angle / 2) * 1.05)
cam.rotation_euler = (ctr - cam.location).to_track_quat("-Z", "Y").to_euler()
```
`to_track_quat` assumes Z-up world; if the asset is authored Y-up inside
Blender's Z-up slots, build the look-at basis by hand (cross products off
the target vector and the game's own up axis) or every render is on its side.

**Voronoi stars, never thresholded noise** — noise can't separate density
from size (raise frequency to shrink points → thousands; widen the band to
brighten → falling snow). Voronoi: cell scale = how many, distance threshold
= how big. Cells over a sphere ≈ `4π·scale²`, a frame sees under 1% of it, so
`scale=30` puts ~15 cells in shot — use `scale ≈ 110`. Angular radius =
`threshold / scale`; move both together.

**Backdrop geometry must be camera-visible only.** A large emissive shell
(planet, skybox) hit by diffuse/glossy rays becomes an area light every
shading point importance-samples — measured **145 s → 4.3 s**:
```python
for o in (planet, atmo):
    o.visible_diffuse = o.visible_glossy = o.visible_transmission = False
    o.visible_volume_scatter = o.visible_shadow = False
```

## 8. Export contract for three.js

- **Join per material within each rigid assembly before export.** Keep moving
  doors/drawers, their attachment groups and required named parts separate;
  never merge them into the static carcass just because they share paint.
  One Blender object = one glTF node =
  one draw call. A loose 11-material ship export was 78 draws;
  `bpy.ops.object.join()` per material group brought it to ~11.
- **Metres, Y-up**: `bpy.ops.export_scene.gltf(export_format='GLB',
  use_selection=True, export_apply=True, export_yup=True)`. (The source game
  exports `export_yup=False` because its own runtime is Y-up-in-Blender's-
  Z-up-slots by convention — a plain three.js consumer wants `export_yup=True`.)
- **Flat base colours or baked textures only** — procedural nodes don't
  survive the round trip (§6). `KHR_materials_emissive_strength` DOES
  survive — nav lights, emissive panels keep authored intensity.
- **Draco for real triangle counts**: position 14-bit quantization is ~1 mm
  over a 16 m interior (a tenth of the smallest chamfer), normal 10-bit,
  texcoord 12-bit, compression level 6.
- **WebP out of Blender directly is lossless regardless of the quality
  argument** — its own quality slider is silently ignored. PNG-dump from
  Blender, encode to WebP with PIL on the host if you need real lossy quality.
- **Check draw calls after adding anything** — a duplicated kit piece is one
  draw call against a shared mesh no matter how many times placed; a fresh
  join is not.

## 8b. Destructible vehicles (tank-damage/v1, 11 Oct 2026)

22 library tanks were made destructible by Astra-directed Blender jobs; the contract and pipeline live in forge-assets
`TANK-DAMAGE.md` (job writer `tools/vehicles/make_jobs_tanks2.py`, retrofit `make_jobs_tanks_retrofit.py`).
- TWO GLBs in the same frame: A = healthy, every bolt-on item its own `Part_<Name>` node (complete surface underneath, origin
  at its centre), `Barrel` child of `Gun`, `Muzzle` child of `Barrel` (identity rotation), `Fx_*` empties; B = damage only:
  `Hull_Damage` (`Dmg_` twins at their Part origins, `Scar_<face>` hit marks 2-4 mm proud, `Track_L/R_Broken`),
  `Turret_Damage` at the Turret origin (`Dmg_Turret_*`, `Scar_Turret_*`, `Gun_Broken` at the Gun origin), `Wreck_Hull`
  (material `Burnt`), `Wreck_Turret` with a closed underside. One file would draw wreck + healthy together (no hidden flag in glTF).
- Build the damage from COPIES of the healthy meshes (deform, cut, boolean, decimate) so everything lines up; the job renders
  `states.png` (healthy, hit, stripped, immobilised, wreck, turret off) from the two exported GLBs and looks at it.
- Retrofit an existing model from its previous build script + GLB + baked textures (copy them into a NEW remote dir): the
  offsets stay, so games aim the same way. Check the Muzzle position afterwards (the old Sherman's pointed backwards).
- Six to eight jobs at once worked (healthy file in 10-30 min, damage by ~60, 47-60 min in all; GPU gate on gex44).
  Each writes 50-105 MB into `~/.codex/sessions`: watch the local disk.
- A library card version is immutable: the importer refuses a version that belongs to another job.
- In game the model wants the runtime skin (FGE `module/vehicle-skin.mjs`, the JUGGERNAUT technique) on top of its bake.

## 9. Traps

- Bevel on bmesh-authored geometry does nothing (no shared edges) — weld
  first (§3). `o.scale` then Bevel makes pillows — apply scale first.
- `matrix_parent_inverse = parent.matrix_world.inverted()` cancels the
  parent transform (the "keep transform" idiom). Leave it at identity for
  the child to inherit the parent's rotation.
- A rotation about the wrong axis silently does nothing visible — a panel
  whose normal is +X doesn't change facing when rotated about X. Measure the
  world normal against the view vector rather than reasoning about it.
- Map Range with `To Min > To Max` and clamp on collapses to zero (clamps to
  an inverted interval) — invert with a `SUBTRACT` node instead.
- A Mix node in RGBA mode can silently drop a branch — several sockets share
  the name "Factor". Combine world contributions with two `Background` nodes
  into an `Add Shader` instead.
- The image preview downsamples — 4-px stars average away in a 1080p
  preview. Crop 1:1 and count bright pixels before concluding nothing rendered.
- A tangent-space NORMAL bake off a flat plane records nothing for vertical
  geometry — bake height by ray-traced Emission instead (§4).
- AO bakes along the surface normal — a kit skin wound facing away from the
  room bakes unoccluded everywhere.
- An AO map reaching pure black paints an unrecoverable dark line —
  floor-lift it (§4).
- Blender's WebP writer ignores its own quality setting, always lossless —
  PNG-dump and re-encode on the host (§8).
- Blender exits 0 even when the driven script raised — check stderr and the
  output file, not the return code (§2).
- A socket/exec service keeps Blender's *process* environment between calls
  — a default from a stale env var silently sends output into the wrong
  checkout. Assign output paths explicitly every call, never `setdefault`.

**Blender 5.x API changes** (4.x code fails on all of these):
- `Scene.node_tree` gone → `Scene.compositing_node_group`;
  `CompositorNodeComposite` no longer exists — the group's output socket IS
  the result.
- **The compositing group must contain a `CompositorNodeRLayers`.** Feeding
  it only from a Group Input means nothing depends on the render, so Blender
  skips rendering and writes a transparent black frame in 0.1 s. A
  suspiciously fast render is this bug.
- `Action.fcurves` is gone (slotted actions). Set
  `context.preferences.edit.keyframe_new_interpolation_type` *before*
  inserting keys.
- Glare/Lensdist settings moved from properties onto **sockets**; enums take
  display names (`"Fog Glow"`, `"Streaks"`, `"High"`), not old identifiers.
- Legacy addons still install to `~/Library/.../Blender/<ver>/scripts/addons/`
  on macOS — irrelevant on gex44, relevant for local proving.

## 10. Gates (measurable, not "looks right")

- **Independent export audit**: run
  `python3 scripts/audit_glb.py /absolute/path/asset.glb --strict` from this skill
  directory (requires numpy). It reports mesh-local triangles, nonfinite values,
  degenerate triangles, material groups and texture portability. Exit 1 means
  findings; exit 2 means invalid/unsupported input, never a clean bill of health.
  Audit uncompressed output before Draco/meshopt and inspect the compressed
  consumer separately. It does not validate winding, source solids, intersections,
  node-transformed placement, runtime draw calls or gameplay. Keep source meshes
  for topology/volume inspection; check transformed instance bounds in-game.
  The harbour correction's own empty issues list missed 16 zero-area triangles.

- **Rigged-asset rejection gates** (block the asset before it reaches a build; each one is a
  known failure class):
  - a character MAIN model still contains swappable gear (gear is separate parts on sockets);
  - action/animation files carry duplicate render meshes;
  - skeletons or bone names differ across actions of the same character;
  - a required role, socket (`target`, `ground`, `vfx-hit`, `vfx-death`, `attack-*`), collider,
    equipment-slot declaration or provenance field is absent;
  - toggling gear leaves visible fragments or holes without a declared underlayer boundary;
  - an attack animation has no authoritative timing and collision contract (see
    `_game-kit/core/ENEMY-CONTRACT.md`);
  - status language is truthful: `catalog-only` (recorded), `review-only` (inspector exists),
    `runtime` (gameplay loads it). Only `runtime` counts as shipped.
  Mechanical half: `audit_glb.py --rig --require-sockets target,ground,vfx-hit,vfx-death` reports
  skins, joint names, duplicate primitives (identical geometry buffers) and missing named nodes.
  Design after MengTo/Skills build-rigged-game-assets requirements (MIT); the human half stays a
  checklist.
- **Tone stats**: percentile clipping, e.g. "0.00% of pixels clip and the
  99th percentile is 165" — actionable; "looks flat" is not.
- **Contact sheets**: render every set-piece/angle into one grid image,
  judge the set at once rather than one screenshot at a time.
- **Clay check before any bake is trusted**: flat grey, hard key + rim +
  bounce, no textures, no emissives. A silhouette reading as a rectangle or
  an edge reading as infinitely sharp means the model isn't finished —
  textures and lighting hide box-stacking completely, flat clay does not.
- **Re-verify the capture isn't stale**: if the render/dev surface can
  hot-reload mid-capture, re-check the expected state is actually showing
  before saving, restart if not — a loading-state screenshot with a
  plausible number next to it is a silent false pass.
- **Draw-call and fps survey** after adding any asset: report draw count
  against the pre-change baseline (join-per-material should hold it flat)
  and frame time on the heaviest scene the asset appears in.
- **AO sanity**: print the raw bake's percentile spread (1st/10th/50th/90th)
  before floor-lifting — `min == 0` over a large area means winding or
  distance is wrong, not that floor-lift will fix it.
- Numbers not yet measured on gex44/RTX 4000 Ada (draft/final render time,
  bake time for a 4096 atlas): **unmeasured** — get one real run's numbers
  before writing them into a plan or a budget.

## Attribution

Distilled from TheLongSilence (MIT License, Copyright (c) 2026 Anshu
Chimala). Runnable reference code copied under the same license into
`reference/` — see `reference/INDEX.md`.

`reference/high-to-low-baking.md`, `baking-and-diagnostics.md`, `asset-delivery.md`,
`preflight-and-recovery.md` and `runtime-parity-and-diagnostics.md` are ported from
vercel-labs/vgpu `skills/vgpu/blender/references/` at commit 68cb1d8d198c (MIT License,
Copyright (c) 2025 Vercel, Inc.), adapted from vgpu/WebGPU to the three.js runtime.
`reference/critic-loop.md` is distilled from the same repository's asset agent flow.

hook: PreToolUse
hook: PreToolUse Completed
codex
I’m using the Blender game-assets skill. The reference’s defining features are the blunt annular maw, overlapping carapace plates, recessed amber vents, swept dorsal spines, and curved harvesting arms. I’ll preserve those forms and use tiled surface textures so the 420-metre hull retains detail up close.

hook: PreToolUse
hook: PreToolUse
hook: PreToolUse
hook: PreToolUse
hook: PreToolUse
hook: PreToolUse
hook: PreToolUse
hook: PreToolUse
hook: PreToolUse Completed
mcp: forge/skills_get started
mcp: forge/skills_get (completed)
hook: PreToolUse Completed
mcp: forge/coord_check started
hook: PreToolUse Completed
mcp: forge/memory_search started
hook: PreToolUse Completed
mcp: forge/coord_check started
mcp: forge/coord_check (completed)
hook: PreToolUse Completed
hook: PreToolUse Completed
hook: PreToolUse Completed
hook: PreToolUse Completed
exec
/bin/bash -lc "cat /home/claude-agent/.agents/skills/blender-game-assets/reference/preflight-and-recovery.md /home/claude-agent/.agents/skills/blender-game-assets/reference/critic-loop.md && ls -lah && df -h / && ssh gex44 'nvidia-smi --query-gpu=name,memory.used,memory.total --format=csv,noheader; pgrep -af blender | head -12'" in /home/claude-agent/forge-build/forge-assets/jobs/alien-harvester-v1
 succeeded in 859ms:
<!-- Ported from vercel-labs/vgpu skills/vgpu/blender/references/preflight-and-recovery.md at commit 68cb1d8d198c (MIT, Copyright (c) 2025 Vercel, Inc.). Adapted for Forge: three.js runtime instead of vgpu/WebGPU, links rerouted. Upstream text otherwise kept so a re-sync stays diffable. -->

# Preflight and Recovery

Use this workflow for long bakes and scripted asset delivery. Keep a short manual edit lightweight; add checkpoints where repeating expensive work or confusing stale output is a real risk. These are asset execution requirements, independent of how many people or agents perform the work.

## Exercise the actual execution path first

Before an expensive run, provide and run a task-local preflight command using the same executable, working directory, dependency environment and helper paths as the intended run. Reuse existing project checks where possible. A version query or import from another directory is not an execution probe.

- Start native Blender (gex44 path and GPU gate wrapper: `SKILL.md` §2) and execute a minimal scene operation through Python. For scripted runs, use `--python-exit-code 1`; inspect logs and the expected output, not exit status alone.
- Exercise the chosen render/bake device with a tiny representative bake, then export, encode/decode and import a small fixture through the actual exporter and runtime loader. Await codec initialization. Resolve copied Node helpers from their real execution directory and module mode; a successful ESM import does not establish that a copied CommonJS helper can resolve its dependencies.
- Classify required and optional inputs before baking. Verify required files, codecs, writable output paths and capture dependencies. Missing optional metadata must have a documented fallback or be omitted deliberately, not fail final assembly after a completed bake.
- Capture and read one real target-renderer frame with the intended browser/image tools. Record the actual backend; a fallback renderer does not validate the requested backend. This probe establishes that the tools work, not final visual quality.

If a probe fails, fix or report that boundary before starting dependent expensive work. Do not keep retrying the unchanged failure. If sources may change during a run, execute an immutable snapshot including local imports; record external dependencies and verify snapshot hashes at completion.

## Keep stages independently recoverable

Give expensive stages explicit commands, inputs, outputs and validation. A task-local script may expose subcommands or separate entry points; no particular build framework is required. Do not force a bake when that asset does not need one.

| Stage | Evidence needed before its outputs can be reused |
| --- | --- |
| Prepare | Saved source/LOW checkpoint, resolved transforms and reproducible parameters |
| Validate geometry | Openings, contacts, normals and UV checks on evaluated/exported LOW; simple-material views, including relevant LODs |
| Bake | Lossless masters, actual pass settings and dependency identities, coverage and representative pixel checks |
| Export | Decodable serialized meshes, map/UV bindings and measured counts; reconcile exporter changes with prepared geometry |
| Package | Required files, decoded texture error, channels/mips and delivery manifest with hashes |
| Verify runtime | Actual target-backend captures from matched cameras, independent map toggles, measured costs and renderer errors |

For each attempt, save the exact command, input/dependency hashes, tool identities, exit outcome, output hashes, validation results and failure reason. Mark a stage complete only after its outputs pass its checks. Keep failed attempts and logs distinct from completed checkpoints. File existence or a successful process alone is not proof of completion.

On retry, start at the earliest invalid stage and revalidate dependent outputs. If packaging fails after a verified bake/export, resume packaging from those artifacts; do not regenerate the scene merely to rerun a copy step. When geometry, normals or lighting change, use the [bake dependency rules](baking-and-diagnostics.md#reuse-bakes-by-their-dependencies) to decide which passes need new identities.

## Validate a candidate before replacing delivery assets

Keep candidate assets separate from the last working delivery. Verify the candidate manifest and served build/asset identities before capture; avoid a preview that silently loads missing files from the old asset set. Promote only the validated files together with their matching manifest, retain a recoverable previous version, and smoke-check the delivered URL after replacement. Report whether the replacement is atomic; per-file writes do not make the whole asset set atomic.

Checks establish structural and runtime evidence, not aesthetic acceptance. Pair them with the matched visual review in [the critic loop](critic-loop.md) and the gates in `SKILL.md` §10.
<!-- Distilled from vercel-labs/vgpu .claude/skills/vgpu-agent-flow/references/asset-iteration.md and
.subharness/agents/asset-author.ts + asset-critic.ts at commit 68cb1d8d198c (MIT, Copyright (c) 2025 Vercel, Inc.),
rewritten for Forge lanes (forge-agent, Astra author, a second model family as critic). -->

# Author and critic loop for a Blender asset

Use this for any authored asset that will be judged by eye: a hero prop, a character, a building, an
environment. Skip it for a mechanical re-export.

## Seats

| Seat | Who | Owns |
| --- | --- | --- |
| Author | Astra (operator law: Blender work goes to Astra) | Geometry, authored materials, UVs, bakes, Blender renders, the export |
| Runtime | The root, or one worker when the shader work is real | Loading the export in the game's actual three.js path, captures, measured costs |
| Critic | A different model family from the author, reading the real images | Findings only. Never edits the asset |

The critic must open the actual capture files. A critic that cannot read images says so and returns
BLOCKED; it never writes a visual verdict from metrics or from the author's description.

## Budget

- Default: **3 revisions, at most 2 critic passes per revision.** The brief may set another cap.
- A cap is an execution limit, not acceptance. Cap reached with open visual findings = `REVISE`
  reported as such, never a `PASS`.
- No unattended improvement loop past the cap.

## Before the first render

Write in the task folder: scope, target cameras (gameplay view, hero, rear, closest required view),
output paths, budgets (triangles, exported vertices, texture bytes and GPU memory, draw calls) and
the revision cap. Budgets are task inputs; do not copy another asset's numbers.

Run the [preflight](preflight-and-recovery.md) once: Blender starts and runs a scene operation, a
tiny bake and export round-trips through the real loader, one real runtime frame is captured.

Integrate a cheap LOW blockout in the runtime at this stage. Scale, axis, camera and material
contract problems are found before an expensive bake, not after.

## Each revision keeps

- the source revision or parameters that rebuild the previous asset;
- real hero, rear and close-up captures, same camera, light, exposure and pose every time;
- triangles, exported vertices, primitives, material count, file bytes, texture GPU memory;
- runtime draw counters, kept apart from offline estimates;
- the critic's findings, the fixes chosen, and the next measured result.

## The critic pass

The critic receives the previous AND the current captures and metrics under matched cameras (or
an explicit "first revision, no baseline"), the reference image, and the brief. It returns:

- **at most five findings**, ordered by impact, each with a stable id, the evidence path (whole
  view plus crop or image coordinates), the visible symptom, a suggested correction and a
  **measurable acceptance condition**;
- regressions against the previous revision;
- resolved / remaining / regressed status of earlier findings on a follow-up pass;
- `PASS`, `REVISE` or `BLOCKED`, with the limits of its evidence.

It compares against the reference as well as the previous revision: clean topology and progress
since last time do not make the asset match the reference. It separates the observed defect from
the suspected cause. A small whole-image difference can hide severe local damage (thin trim,
stairs, silhouette edges): it inspects crops at each delivered LOD. Design ideas are suggestions,
not new acceptance requirements.

When the cause could be the asset or the renderer, it asks for the diagnostic captures in
[runtime parity](runtime-parity-and-diagnostics.md) (maps off, AO neutral, lightmap off) rather
than guessing.

## Rules that stop false passes

- A generated concept image is never proof of a working model. Label concepts as concepts; accept
  only on real renders of the real export.
- Requested bakes need bake provenance (what was baked, from what, at what settings) and matched
  runtime captures with each contribution switched off in turn. Vertex tint and runtime shadows
  are not substitutes for a requested AO or lightmap bake.
- An atlas repair is checked on the full matched views, not only on the crop that was broken: a new
  layout can fix one edge and turn another face black.
- One writer per handoff file. A reply never gets appended to a request file another agent will
  regenerate. Superseded manifests and failed captures stay on disk.
- The author hands the root a compact result: verdict, the few decisive images, the metrics table.
  Full capture sets stay on disk; the root does not load every image.
- A user's rejection or a changed brief reopens any earlier `PASS`.

## Lessons

When a revision teaches something that will recur, write it as: evidence path, symptom, cause,
intervention, matched before/after result, scope. The root checks it and makes a narrow edit to this
skill. Reject task-specific style preferences dressed up as general rules.
total 940K
drwxrwxr-x  2 claude-agent claude-agent 4.0K Oct 16 18:39 .
drwxrwxr-x 78 claude-agent claude-agent 4.0K Oct 16 18:33 ..
-rw-rw-r--  1 claude-agent claude-agent 7.4K Oct 16 18:39 PROMPT.txt
-rw-rw-r--  1 claude-agent claude-agent  78K Oct 16 18:39 astra.log
-rw-rw-r--  1 claude-agent claude-agent 5.1K Oct 16 18:37 job.json
-rw-rw-r--  1 claude-agent claude-agent 827K Oct 16 18:34 sheet.jpg
-rw-rw-r--  1 claude-agent claude-agent  909 Oct 16 18:37 sheet_prompt.txt
-rw-rw-r--  1 claude-agent claude-agent   21 Oct 16 18:39 started.txt
Filesystem      Size  Used Avail Use% Mounted on
/dev/sda1       150G  135G  9.0G  94% /
NVIDIA RTX 4000 SFF Ada Generation, 6338 MiB, 20475 MiB
18867 python3 /opt/astra-blender/blender_exec_server.py
18880 python3 /opt/astra-blender/blender_exec_server.py
40540 bash -c cd /root/room-fit-pack/prop-lane && while pgrep -f blender >/dev/null 2>&1; do sleep 5; done; echo BLENDER_DONE; cat optimize_run7.log
87189 bash -c cd /root/room-fit-pack/prop-lane && while pgrep -f blender >/dev/null 2>&1; do sleep 4; done; echo BLENDER_DONE; cat optimize_run8.log
3800435 bash -c nvidia-smi --query-gpu=name,memory.used,memory.total --format=csv,noheader; pgrep -af blender | head -12
3939376 python3 /opt/astra-blender/blender_exec_server.py

mcp: forge/memory_search (completed)
mcp: forge/coord_check (completed)
hook: PreToolUse
hook: PreToolUse Completed
mcp: forge/coord_claim started
mcp: forge/coord_claim (completed)
hook: PreToolUse
hook: PreToolUse Completed
mcp: forge/coord_claim started
mcp: forge/coord_claim (completed)
hook: PreToolUse
hook: PreToolUse
hook: PreToolUse
hook: PreToolUse
hook: PreToolUse Completed
hook: PreToolUse Completed
hook: PreToolUse Completed
hook: PreToolUse Completed
exec
/bin/bash -lc "ssh gex44 mkdir -p /root/fal-author/alien-harvester-v1 && python3 - <<'PY'
import urllib.request,json
u='https://api.polyhaven.com/assets?t=textures'
d=json.load(urllib.request.urlopen(u))
print('\\n'.join(k for k in d if any(w in k for w in ('metal','steel','rust','paint'))))
PY" in /home/claude-agent/forge-build/forge-assets/jobs/alien-harvester-v1
 exited 1 in 1689ms:
Traceback (most recent call last):
  File "<stdin>", line 3, in <module>
  File "/usr/lib/python3.12/urllib/request.py", line 215, in urlopen
    return opener.open(url, data, timeout)
           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/usr/lib/python3.12/urllib/request.py", line 521, in open
    response = meth(req, response)
               ^^^^^^^^^^^^^^^^^^^
  File "/usr/lib/python3.12/urllib/request.py", line 630, in http_response
    response = self.parent.error(
               ^^^^^^^^^^^^^^^^^^
  File "/usr/lib/python3.12/urllib/request.py", line 559, in error
    return self._call_chain(*args)
           ^^^^^^^^^^^^^^^^^^^^^^^
  File "/usr/lib/python3.12/urllib/request.py", line 492, in _call_chain
    result = func(*args)
             ^^^^^^^^^^^
  File "/usr/lib/python3.12/urllib/request.py", line 639, in http_error_default
    raise HTTPError(req.full_url, code, msg, hdrs, fp)
urllib.error.HTTPError: HTTP Error 403: Forbidden

hook: PreToolUse
hook: PreToolUse
hook: PreToolUse
hook: PreToolUse
hook: PreToolUse Completed
hook: PreToolUse Completed
hook: PreToolUse Completed
hook: PreToolUse Completed
exec
/bin/bash -lc "ssh gex44 \"python3 - <<'PY'
import urllib.request,json
r=urllib.request.Request('https://api.polyhaven.com/assets?t=textures',headers={'User-Agent':'Mozilla/5.0'})
d=json.load(urllib.request.urlopen(r))
print(' '.join(k for k in d if any(w in k for w in ('metal','steel','rust','paint'))))
PY\"" in /home/claude-agent/forge-build/forge-assets/jobs/alien-harvester-v1
 succeeded in 801ms:
black_painted_planks blue_metal_plate blue_painted_planks box_profile_metal_sheet concrete_floor_painted distressed_painted_planks green_metal_rust metal_grate_rusty metal_plate metal_plate_02 painted_brick painted_concrete painted_concrete_02 painted_metal_shutter painted_plaster_wall painted_worn_brick peeling_painted_wall rust_coarse_01 rusted_shutter rustic_stone_wall rustic_stone_wall_02 rusty_corrugated_iron rusty_metal rusty_metal_02 rusty_metal_03 rusty_metal_04 rusty_metal_05 rusty_metal_grid rusty_metal_sheet rusty_metal_shutter rusty_painted_metal wood_peeling_paint_weathered

codex
The ship will have six separate harvesting-arm nodes, recessed vent housings, and a deep intake maw. I’ve also confirmed Poly Haven access from the Blender machine; I’m baking photographic metal textures into shared tile sets within the game texture limits.

hook: PreToolUse
hook: PreToolUse
hook: PreToolUse
hook: PreToolUse
hook: PreToolUse Completed
hook: PreToolUse Completed
hook: PreToolUse Completed
hook: PreToolUse Completed
exec
/bin/bash -lc "cat > build_alien-harvester.py <<'PY'
\"\"\"Alien harvester: deterministic clean-scene build, Cycles tile bakes, GLB and proof renders.
Run: blender -b --python-exit-code 1 --python build_alien-harvester.py
Optional -- --probe performs a tiny GPU bake/export/reimport before the full job.
Only downloaded inputs are CC0 Poly Haven jpgs. All other detail is geometry/nodes.
\"\"\"
import bpy, math, json, os, sys, struct, urllib.request, random, time
from pathlib import Path
from mathutils import Vector, Matrix
import bmesh
import numpy as np

ROOT=Path(__file__).resolve().parent
CACHE=ROOT/'textures'; CACHE.mkdir(exist_ok=True)
OUT=ROOT
random.seed(119)
T0=time.time()
PAINTS=[('Obsidian carapace',[.10,.11,.10]),('Deep violet',[.115,.055,.18]),('Bone white',[.68,.64,.52]),('Abyssal teal',[.025,.18,.175]),('Oxblood',[.22,.028,.035]),('Jade',[.08,.29,.16])]
PH_IDS=['metal_plate','rusty_metal_02']
# Revision budget: 3. Hero: front-port elevated, side ortho, clay, close and rear.
# Geometry 80k..200k triangles; <=9 mats; GLB <=12MB; colour/normal <=1024; ORM <=512.

def log(s): print('HARVESTER',round(time.time()-T0,1),s,flush=True)
def select(o):
    bpy.ops.object.select_all(action='DESELECT'); o.select_set(True); bpy.context.view_layer.objects.active=o

def init():
    bpy.ops.object.select_all(action='SELECT'); bpy.ops.object.delete(use_global=False)
    for d in list(bpy.data.materials): bpy.data.materials.remove(d)
    sc=bpy.context.scene; sc.render.engine='CYCLES'; sc.cycles.samples=24
    pref=bpy.context.preferences.addons['cycles'].preferences
    try: pref.compute_device_type='OPTIX'
    except: pref.compute_device_type='CUDA'
    pref.get_devices()
    gpu=[]
    for d in pref.devices:
        d.use=d.type"'!='"'CPU'
        if d.use: gpu.append(d.name)
    assert gpu,'GPU required'
    sc.cycles.device='GPU'; sc.cycles.use_denoising=True
    sc.cycles.max_bounces=5; sc.cycles.diffuse_bounces=2; sc.cycles.glossy_bounces=3
    sc.render.image_settings.file_format='PNG'; sc.render.image_settings.color_mode='RGBA'
    sc.render.film_transparent=False
    sc.unit_settings.system='METRIC'; sc.unit_settings.scale_length=1
    sc.view_settings.view_transform='AgX'
    sc.render.resolution_percentage=100
    log('GPU '+str(gpu))
    return sc

sc=init()

def fetch(id,map):
    p=CACHE/f'{id}_{map}_1k.jpg'
    if not p.exists():
        url=f'https://dl.polyhaven.org/file/ph-assets/Textures/jpg/1k/{id}/{id}_{map}_1k.jpg'
        req=urllib.request.Request(url,headers={'User-Agent':'Mozilla/5.0 (Forge asset authoring)'})
        with urllib.request.urlopen(req,timeout=90) as r: p.write_bytes(r.read())
    img=bpy.data.images.load(str(p),check_existing=True)
    if map"'!='"'diff': img.colorspace_settings.name='Non-Color'
    return img

def node(nt,kind):return nt.nodes.new(kind)
def mathnode(nt,op,a,b):
    n=node(nt,'ShaderNodeMath');n.operation=op
    for i,v in enumerate((a,b)):
        if isinstance(v,(float,int)): n.inputs[i].default_value=v
        else:nt.links.new(v,n.inputs[i])
    return n.outputs[0]
def color_mix(nt,a,b,fac,mode='MIX'):
    n=node(nt,'ShaderNodeMixRGB');n.blend_type=mode
    for i,v in enumerate((fac,a,b)):
        if isinstance(v,(float,int)):n.inputs[i].default_value=v
        elif isinstance(v,(tuple,list)):n.inputs[i].default_value=v
        else:nt.links.new(v,n.inputs[i])
    return n.outputs[0]

def bake_material(name,kind,ph):
    \"\"\"Bake a periodic 8m stock surface, then use it at world scale on every part.\"\"\"
    log('Bake '+name)
    mat=bpy.data.materials.new(name); mat.use_nodes=True
    nt=mat.node_tree;nt.nodes.clear();lk=nt.links
    out=node(nt,'ShaderNodeOutputMaterial');p=node(nt,'ShaderNodeBsdfPrincipled');lk.new(p.outputs[0],out.inputs['Surface'])
    uv=node(nt,'ShaderNodeTexCoord')
    images={}
    for k in ['diff','nor_gl','arm']:
        t=node(nt,'ShaderNodeTexImage');t.image=fetch(ph,k);t.extension='REPEAT';lk.new(uv.outputs['UV'],t.inputs['Vector']);images[k]=t
    bw=node(nt,'ShaderNodeRGBToBW');lk.new(images['diff'].outputs['Color'],bw.inputs[0])
    noise=node(nt,'ShaderNodeTexNoise');noise.inputs['Scale'].default_value=92;noise.inputs['Detail'].default_value=3
    lk.new(uv.outputs['UV'],noise.inputs['Vector'])
    # Fine pitting and irregular mill finish remain neutral under faction multiplication.
    if kind=='paint':
        lum=mathnode(nt,'ADD',mathnode(nt,'MULTIPLY',bw.outputs[0],.29),.66)
        base=color_mix(nt,lum,noise.outputs['Fac'],.08,'MULTIPLY');rough=.39;metal=.67
    elif kind=='metal':
        base=color_mix(nt,images['diff'].outputs[0],(.19,.22,.25,1),.65);rough=.38;metal=.9
    elif kind=='scorch':
        base=color_mix(nt,images['diff'].outputs[0],(.065,.042,.026,1),.73);rough=.58;metal=.76
    else:
        base=color_mix(nt,images['diff'].outputs[0],(.018,.023,.026,1),.94);rough=.64;metal=.38
    sep=node(nt,'ShaderNodeSeparateColor');lk.new(images['arm'].outputs[0],sep.inputs['Color'])
    r=mathnode(nt,'ADD',mathnode(nt,'MULTIPLY',sep.outputs['Green'],.23),rough)
    ao=mathnode(nt,'ADD',mathnode(nt,'MULTIPLY',sep.outputs['Red'],.22),.78)
    normal=node(nt,'ShaderNodeNormalMap');normal.inputs['Strength'].default_value=.45
    lk.new(images['nor_gl'].outputs[0],normal.inputs['Color'])
    bump=node(nt,'ShaderNodeBump');bump.inputs['Strength'].default_value=.17;bump.inputs['Distance'].default_value=.018
    lk.new(noise.outputs['Fac'],bump.inputs['Height']);lk.new(normal.outputs[0],bump.inputs['Normal']);lk.new(bump.outputs[0],p.inputs['Normal'])
    lk.new(base,p.inputs['Base Color']);lk.new(r,p.inputs['Roughness']);p.inputs['Metallic'].default_value=metal
    bpy.ops.mesh.primitive_plane_add(size=8);plane=bpy.context.object;plane.name='Bake_stock';plane.data.materials.append(mat)
    target=node(nt,'ShaderNodeTexImage');nt.nodes.active=target
    emit=node(nt,'ShaderNodeEmission')
    baked={}
    for typ,res in [('Base',1024),('Normal',1024),('ORM',512)]:
        img=bpy.data.images.new(name+'_'+typ,width=res,height=res,alpha=False)
        if typ"'!='"'Base':img.colorspace_settings.name='Non-Color'
        target.image=img;nt.nodes.active=target
        sc.render.bake.margin=8;sc.cycles.samples=16
        if typ=='Normal':
            lk.new(p.outputs[0],out.inputs['Surface']);bpy.ops.object.bake(type='NORMAL')
        else:
            if typ=='Base':lk.new(base,emit.inputs['Color'])
            else:
                comb=node(nt,'ShaderNodeCombineColor');lk.new(ao,comb.inputs['Red']);lk.new(r,comb.inputs['Green']);comb.inputs['Blue'].default_value=metal;lk.new(comb.outputs[0],emit.inputs['Color'])
            lk.new(emit.outputs[0],out.inputs['Surface']);bpy.ops.object.bake(type='EMIT')
        img.filepath_raw=str(CACHE/(name+'_'+typ+'.png'));img.file_format='PNG';img.save();baked[typ]=img
    bpy.data.objects.remove(plane,do_unlink=True)
    nt.nodes.clear();out=node(nt,'ShaderNodeOutputMaterial');p=node(nt,'ShaderNodeBsdfPrincipled');lk.new(p.outputs[0],out.inputs['Surface'])
    for typ in ['Base','Normal','ORM']:
        t=node(nt,'ShaderNodeTexImage');t.image=baked[typ];t.name=typ;t.label='Cycles baked 8m tiling stock'
        if typ=='Base':lk.new(t.outputs[0],p.inputs['Base Color'])
        elif typ=='Normal':
            n=node(nt,'ShaderNodeNormalMap');lk.new(t.outputs[0],n.inputs['Color']);lk.new(n.outputs[0],p.inputs['Normal'])
        else:
            s=node(nt,'ShaderNodeSeparateColor');lk.new(t.outputs[0],s.inputs[0]);lk.new(s.outputs['Green'],p.inputs['Roughness']);lk.new(s.outputs['Blue'],p.inputs['Metallic'])
            # Official glTF occlusion hook.
            if 'glTF Material Output' not in bpy.data.node_groups:
                ng=bpy.data.node_groups.new('glTF Material Output','ShaderNodeTree');ng.interface.new_socket(name='Occlusion',in_out='INPUT',socket_type='NodeSocketFloat')
            g=node(nt,'ShaderNodeGroup');g.node_tree=bpy.data.node_groups['glTF Material Output'];lk.new(s.outputs['Red'],g.inputs['Occlusion'])
    return mat

if '--probe' in sys.argv:
    m=bake_material('Probe','paint','metal_plate')
    bpy.ops.mesh.primitive_uv_sphere_add(segments=16,ring_count=8)
    o=bpy.context.object;o.data.materials.append(m)
    bpy.ops.export_scene.gltf(filepath=str(OUT/'probe.glb'),export_format='GLB',use_selection=True)
    bpy.ops.object.delete();bpy.ops.import_scene.gltf(filepath=str(OUT/'probe.glb'))
    assert len([x for x in sc.objects if x.type=='MESH'])==1
    log('PROBE_OK');sys.exit(0)

MATS=[bake_material('Paint','paint','metal_plate'),bake_material('Titanium','metal','metal_plate'),bake_material('HeatScorched','scorch','rusty_metal_02'),bake_material('Recess','recess','metal_plate')]
for name,col,strength in [('Lamps',(1,.235,.018,1),2.0),('Engines',(1,.32,.035,1),2.1)]:
    m=bpy.data.materials.new(name);m.use_nodes=True;p=m.node_tree.nodes.get('Principled BSDF');p.inputs['Base Color'].default_value=col;p.inputs['Roughness'].default_value=.34;p.inputs['Metallic'].default_value=.3;p.inputs['Emission Color'].default_value=col;p.inputs['Emission Strength'].default_value=strength;MATS.append(m)

class Geo:
    def __init__(self,name,pivot=(0,0,0)):self.name=name;self.v=[];self.f=[];self.mi=[];self.pivot=Vector(pivot)
    def add(self,vs,fs,mat=0):
        n=len(self.v);self.v.extend([tuple(v) for v in vs]);self.f.extend([tuple(n+i for i in f) for f in fs]);self.mi.extend([mat]*len(fs))
    def object(self):
        me=bpy.data.meshes.new(self.name);me.from_pydata(self.v,[],self.f);me.update()
        # Recalculate closed shell normals; all surfaces use welded edge topology.
        bm=bmesh.new();bm.from_mesh(me);bmesh.ops.recalc_face_normals(bm,faces=bm.faces)
        # Remove any accidental zero-area faces before serialization.
        bad=[f for f in bm.faces if f.calc_area()<1e-9]
        if bad:bmesh.ops.delete(bm,geom=bad,context='FACES')
        bm.to_mesh(me);bm.free()
        for m in MATS:me.materials.append(m)
        for f,idx in zip(me.polygons,self.mi):f.material_index=idx;f.use_smooth=True
        uv=me.uv_layers.new(name='UVMap')
        # World scale projection: repeated baked material every 8m, no 420m atlas.
        for f in me.polygons:
            n=f.normal;ax=max(range(3),key=lambda k:abs(n[k]));axes=[k for k in range(3) if k"'!=ax]
            for li in f.loop_indices:
                p=me.vertices[me.loops[li].vertex_index].co
                uv.data[li].uv=(p[axes[0]]/8,p[axes[1]]/8)
        # Angle-split only hard creases, smooth the swept surfaces.
        bm=bmesh.new();bm.from_mesh(me)
        for e in bm.edges:
            if len(e.link_faces)==2 and e.calc_face_angle(0)>math.radians(48):e.smooth=False
        bm.to_mesh(me);bm.free();me.update()
        ob=bpy.data.objects.new(self.name,me);sc.collection.objects.link(ob)
        for v in me.vertices:v.co-=self.pivot
        ob.location=self.pivot
        return ob

h=Geo('"'Hull')

def tube(g,points,radii,mat=1,sides=12,cap=True,ellipse=1):
    pts=[Vector(p) for p in points];vs=[]
    for j,p in enumerate(pts):
        t=(pts[min(j+1,len(pts)-1)]-pts[max(j-1,0)]).normalized()
        ref=Vector((0,0,1)) if abs(t.z)<.9 else Vector((1,0,0))
        a=t.cross(ref).normalized();b=t.cross(a).normalized();r=radii[j] if hasattr(radii,'__len__') else radii
        for i in range(sides):
            ang=2*math.pi*i/sides;vs.append(p+a*(r*math.cos(ang))+b*(r*ellipse*math.sin(ang)))
    fs=[]
    for j in range(len(pts)-1):
        for i in range(sides):a=j*sides+i;b=j*sides+(i+1)%sides;fs.append((a,b,b+sides,a+sides))
    if cap:fs.extend([tuple(reversed(range(sides))),tuple((len(pts)-1)*sides+i for i in range(sides))])
    g.add(vs,fs,mat)

def ellipsoid(g,c,scale,mat=0,seg=20,rings=10):
    c=Vector(c);vs=[c+Vector((0,0,scale[2]))]
    for j in range(1,rings):
        a=math.pi*j/rings
        for i in range(seg):
            t=2*math.pi*i/seg;vs.append(c+Vector((scale[0]*math.sin(a)*math.cos(t),scale[1]*math.sin(a)*math.sin(t),scale[2]*math.cos(a))))
    vs.append(c-Vector((0,0,scale[2])));bot=len(vs)-1;fs=[]
    for i in range(seg):fs.append((0,1+i,1+(i+1)%seg))
    for j in range(rings-2):
        for i in range(seg):a=1+j*seg+i;b=1+j*seg+(i+1)%seg;fs.append((a,a+seg,b+seg,b))
    for i in range(seg):fs.append((bot,1+(rings-2)*seg+(i+1)%seg,1+(rings-2)*seg+i))
    g.add(vs,fs,mat)

def ring(g,c,axis,rad,minor,mat=1,n=64,k=8,ratio=1):
    c=Vector(c);ax=Vector(axis).normalized();a=ax.cross(Vector((0,0,1)) if abs(ax.z)<.9 else Vector((1,0,0))).normalized();b=ax.cross(a)
    vs=[]
    for i in range(n):
        t=2*math.pi*i/n;out=a*math.cos(t)+b*(math.sin(t)*ratio)
        norm=(a*math.cos(t)+b*math.sin(t)).normalized()
        for j in range(k):s=2*math.pi*j/k;vs.append(c+out*rad+norm*(minor*math.cos(s))+ax*(minor*math.sin(s)))
    fs=[]
    for i in range(n):
        for j in range(k):fs.append((i*k+j,((i+1)%n)*k+j,((i+1)%n)*k+(j+1)%k,i*k+(j+1)%k))
    g.add(vs,fs,mat)

def catmull(points,num):
    p=[Vector(points[0])]+[Vector(x) for x in points]+[Vector(points[-1])];res=[]
    for i in range(1,len(p)-2):
        for j in range(num):
            t=j/num;res.append(.5*((2*p[i])+(-p[i-1]+p[i+1])*t+(2*p[i-1]-5*p[i]+4*p[i+1]-p[i+2])*t*t+(-p[i-1]+3*p[i]-3*p[i+1]+p[i+2])*t*t*t))
    res.append(p[-2]);return res

def rounded_box(g,c,size,mat=1,bevel=.3,basis=None):
    # Six gridded faces projected onto a rounded cuboid, welded by coordinate.
    c=Vector(c);basis=basis or Matrix.Identity(3);half=Vector(size)/2;r=min(bevel,min(half)*.45)
    vals=[-1,-.72,.72,1];vs=[];fs=[];lookup={}
    for ax in range(3):
        other=[k for k in range(3) if k"'!=ax]
        for sign in [-1,1]:
            grid=[]
            for u in range(4):
                row=[]
                for v in range(4):
                    raw=Vector((0,0,0));raw[ax]=sign*half[ax]
                    for k,t in zip(other,(vals[u],vals[v])):raw[k]=t*half[k] if abs(t)==1 else math.copysign(half[k]-r,t)
                    inn=Vector([max(-half[k]+r,min(half[k]-r,raw[k])) for k in range(3)])
                    delta=raw-inn;pt=inn+(delta.normalized()*r if delta.length else delta);key=tuple(round(x,6) for x in pt)
                    if key not in lookup:lookup[key]=len(vs);vs.append(c+basis@pt)
                    row.append(lookup[key])
                grid.append(row)
            for u in range(3):
                for v in range(3):fs.append((grid[u][v],grid[u+1][v],grid[u+1][v+1],grid[u][v+1]))
    g.add(vs,fs,mat)

# Smooth non-capsular hull loft: blunt face, high shoulder, long torso, pinched tail.
profile=[(-200,31,25,0),(-188,37,28,1),(-158,43,31,2),(-112,51,33,3),(-55,55,32,3),(0,55,30,2),(55,51,28,2),(105,43,25,1),(150,32,20,0),(185,21,13,-1),(202,12,8,-1)]
def shape(y):
    for i in range(len(profile)-1):
        a,b=profile[i:i+2]
        if a[0]<=y<=b[0]:
            t=(y-a[0])/(b[0]-a[0]);t=t*t*(3-2*t);return tuple(a[k]*(1-t)+b[k]*t for k in range(1,4))
    return profile[0][1:] if y<profile[0][0] else profile[-1][1:]
def surface(y,t,offset=0):
    w,z,c=shape(y);return Vector(((w+offset)*math.sin(t),y,c+(z+offset)*math.cos(t)))
# Inner continuous skin: intentionally open nose, recessed rear closure.
vs=[];N=96;Y=[-199+i*397/62 for i in range(63)]
for y in Y:
    for i in range(N):vs.append(surface(y,2*math.pi*i/N,-.7))
fs=[]
for j in range(len(Y)-1):
    for i in range(N):a=j*N+i;b=j*N+(i+1)%N;fs.append((a,b,b+N,a+N))
fs.append(tuple((len(Y)-1)*N+i for i in range(N)));h.add(vs,fs,3)

def plate(g,ya,yb,ta,tb,offset=1.3,mat=0,sweep=0):
    # Curved, thick shell patch with rounded rim and subtly swept panel ends.
    nu=8;nv=10;vs=[]
    for layer in [0,1]:
        for j in range(nu+1):
            u=j/nu
            for i in range(nv+1):
                v=i/nv;t=ta+(tb-ta)*v
                edge=min(u*nu,(1-u)*nu,v*nv,(1-v)*nv,1)
                y=ya+(yb-ya)*u+sweep*math.sin(v*math.pi)*(0.3+.7*u)
                bulge=1.0*math.sin(u*math.pi)*math.sin(v*math.pi)
                d=(offset+bulge+.6*edge) if layer==0 else offset-1.0
                vs.append(surface(y,t,d))
    fs=[];stride=nv+1;L=(nu+1)*stride
    for j in range(nu):
        for i in range(nv):
            a=j*stride+i;fs.append((a,a+1,a+1+stride,a+stride));fs.append((a+L,a+stride+L,a+stride+1+L,a+1+L))
    border=list(range(stride))+[j*stride+nv for j in range(1,nu+1)]+[nu*stride+i for i in range(nv-1,-1,-1)]+[j*stride for j in range(nu-1,0,-1)]
    for i,a in enumerate(border):b=border[(i+1)%len(border)];fs.append((a,a+L,b+L,b))
    g.add(vs,fs,mat)
    # Fine abrasion rail set into the exposed aft lip.
    p=[surface(yb+sweep*math.sin(i/nv*math.pi),ta+(tb-ta)*i/nv,offset+.13) for i in range(nv+1)]
    tube(g,p,.19,1,6)

segments=[(-197,-157),(-156,-108),(-107,-57),(-56,-9),(-8,38),(39,81),(82,120),(121,151),(152,180),(181,200)]
for j,(a,b) in enumerate(segments):
    # Continuous crown is broad, the lateral lanes step to an oblique shoulder.
    plate(h,a,b,-.63,.63,1.6,0,4 if j>1 else -2)
    for s in [-1,1]:
        for lane,(lo,hi) in enumerate([(.655,1.28),(1.31,1.91),(1.94,2.59)]):
            aa=max(-197,a+(6 if lane%2 else -3));bb=min(200,b+(6 if lane%2 else -3))
            plate(h,aa,bb,s*lo,s*hi,1.3,0,(-7 if lane==0 else 5))
        # Belly overlap plates, exposed between harvesting roots.
        plate(h,a,b,s*2.62,s*3.12,.8,0,-2)

# LONG RECESSED LATERAL ORGANS, rounded asymmetric outlines, two scales per side.
def vent_pod(sign,cy,cz,L,H):
    # Outline in length-height coordinates, rounded contour via Catmull Rom.
    raw=[(-L*.53,-H*.12),(-L*.41,H*.35),(-L*.10,H*.53),(L*.38,H*.38),(L*.52,H*.10),(L*.39,-H*.40),(-L*.17,-H*.48)]
    p2=catmull([(y,0,z) for y,z in raw+[raw[0],raw[1]]],4)[:-4]
    p2=p2[:-1] if (p2[0]-p2[-1]).length<.01 else p2
    cx=shape(cy)[0]-.5
    ringspec=[(.96,0), (1.08,2.3),(1.04,5.4),(.87,6.5),(.79,4.8),(.79,1.8)]
    vs=[];n=len(p2)
    for scale,depth in ringspec:
        for p in p2:vs.append((sign*(cx+depth),cy+p.x*scale,cz+p.z*scale))
    fs=[]
    for j in range(len(ringspec)-1):
        for i in range(n):a=j*n+i;b=j*n+(i+1)%n;fs.append((a,b,b+n,a+n))
    h.add(vs,fs,0)
    # Interior dark lens with actual depth behind the separate luminous slats.
    gvs=[(sign*(cx+2),cy+p.x*.79,cz+p.z*.79) for p in p2];h.add(gvs,[tuple(range(n))],3)
    # Rim binding/scorched seal follows opening.
    rp=[Vector((sign*(cx+6),cy+p.x*.85,cz+p.z*.85)) for p in p2];tube(h,rp+[rp[0]],.42,2,7)
    for k in range(11):
        t=(k+.5)/11;yy=cy-L*.37+t*L*.72
        hh=H*.26*math.sin(math.pi*t)**.45
        # Amber organ fins are inset, with thin black horizontal heat-grille bars.
        rounded_box(h,(sign*(cx+3.2),yy,cz+.3),(1.25,L*.048,hh*2),4,.5)
        for r in range(6):
            zz=cz-hh+(r+.5)*2*hh/6
            rounded_box(h,(sign*(cx+4.0),yy,zz),(.55,L*.054,.28),2,.11)
        # Structural separators make this a vent rather than glazing.
        if k in [0,3,6,9]:
            tube(h,[(sign*(cx+5),yy-1,cz-hh-1),(sign*(cx+5.8),yy+1,cz+hh+1)],.75,0,8)
    for yy in [cy-L*.28,cy+L*.27]:
        for zz in [cz-H*.35,cz+H*.34]:
            tube(h,[(sign*(cx+4.6),yy,zz),(sign*(cx+5.1),yy,zz)],.4,1,8)
for s in [-1,1]:
    vent_pod(s,-37,0,62,22);vent_pod(s,66,6,67,24)
    # Dorsolateral cooling vents embedded between upper carapace rows.
    for j,cy in enumerate([94,121,145,166]):
        p=surface(cy,s*.94,3)
        rounded_box(h,p,(7.8,15-j*1.6,2.9),3,.7)
        for k in range(4):
            pp=p+Vector((0,(k-1.5)*2.3,1.45));rounded_box(h,pp,(5.6,1.05,.65),4,.23)

# ANNULAR MAW: thick lips, deep dark conical gullet, nested mechanical rings.
ring(h,(0,-199,0),(0,1,0),28.5,2.1,2,96,10,.89)
ring(h,(0,-201,0),(0,1,0),30.2,.58,1,96,8,.89)
ring(h,(0,-195.4,0),(0,1,0),27.8,.8,0,96,8,.89)
# Funnel behind the intake: ring strips are open; back cap deep inside.
vs=[];n=96
for yy,r in [(-201,27.2),(-195,25.5),(-186,20.2),(-177,13.6),(-169,8.8)]:
    for i in range(n):t=i*math.tau/n;vs.append((r*math.cos(t),yy,r*.89*math.sin(t)))
fs=[]
for j in range(4):
    for i in range(n):a=j*n+i;b=j*n+(i+1)%n;fs.append((a,b,b+n,a+n))
fs.append(tuple(4*n+i for i in range(n)));h.add(vs,fs,2)
ring(h,(0,-171,0),(0,1,0),9.2,1.5,3,64,8,.89)
ring(h,(0,-182,0),(0,1,0),16.6,.5,1,64,6,.89)
for i in range(56):
    t=math.tau*i/56
    # Curved inward-pointing amber vanes, segmented like the reference.
    pts=[]
    for j in range(6):
        u=j/5;r=26.1-7*u;a=t+.085*u;pts.append((r*math.cos(a),-201+11*u,r*.89*math.sin(a)))
    tube(h,pts,[.7,.92,.88,.72,.45,.17],4,7)
    # Dark rib continuing down the gullet from each luminous tooth.
    pts2=[]
    for j in range(6):
        u=j/5;r=24-15*u;a=t+.085+.12*u;pts2.append((r*math.cos(a),-193+23*u,r*.89*math.sin(a)))
    tube(h,pts2,[.6,.72,.68,.55,.4,.28],2,6)
    if i%4==0:
        t2=t;pos=(30.7*math.cos(t2),-202,27.2*math.sin(t2));tube(h,[pos,(pos[0],-202.5,pos[2])],.42,1,8)
# Reinforced cheek mandibles extending from the shell into the lip.
for s in [-1,1]:
    for zsgn in [-1,1]:
        pts=catmull([(s*29,-201,zsgn*11),(s*35,-183,zsgn*15),(s*40,-163,zsgn*17),(s*46,-138,zsgn*16)],5)
        tube(h,pts,[2.9+1.2*math.sin(i/(len(pts)-1)*math.pi) for i in range(len(pts))],0,12,.8)
        for j in range(4):
            yy=-190+j*8;pp=Vector((s*(34+j*1.5),yy,zsgn*6));rounded_box(h,pp,(2.2,5.2,1.5),2,.45)

# Dorsal blades: swept taper, armoured root collars; clustered aft of shoulder.
for row in [-1,0,1]:
    for i,yy in enumerate([-35,-7,21,49,77,104,129,151]):
        if row and i in [0,7]:continue
        theta=row*.43;base=surface(yy,theta,2.0);ht=(23 if row==0 else 18)*math.sin((i+1)/9*math.pi)**.5
        pts=catmull([base,base+Vector((row*2,3,ht*.4)),base+Vector((row*5,11,ht*.78)),base+Vector((row*7,21,ht))],5)
        rr=[3.6*(1-j/(len(pts)-1))**1.05+.035 for j in range(len(pts))]
        tube(h,pts,rr,2,10,.66);ellipsoid(h,base,(5.3,7.8,2.8),0,18,8)
        tube(h,[base+Vector((row*2,0,1)),base+Vector((row*3,4,ht*.36)),base+Vector((row*5,11,ht*.7))],[.35,.28,.05],1,6)

# Tail split vanes around the engine cluster: swept, no familiar human ship tail.
for s in [-1,1]:
    for zz in [-14,15]:
        pts=catmull([(s*28,132,zz),(s*31,163,zz*1.1),(s*26,189,zz*1.08),(s*21,211,zz*.9)],6)
        rr=[6*(1-i/(len(pts)-1))**.8+.07 for i in range(len(pts))];tube(h,pts,rr,0,14,.58)
        tube(h,[p+Vector((0,0,2.2 if zz>0 else -2.2)) for p in pts[:-3]],[.30]*len(pts[:-3]),1,6)

# Three main engines, bevelled ring exits, recessed glowing interiors.
THRUSTERS=[]
for i,(x,z,r,end) in enumerate([(-24,-7,12,196),(24,-7,12,196),(0,15,9,201)]):
    tube(h,[(x,133,z),(x,147,z),(x,169,z),(x,end-4,z)],[r*.83,r*1.21,r*1.1,r],0,48)
    ring(h,(x,151,z),(0,1,0),r*1.16,.9,2,48,8)
    ring(h,(x,end-3,z),(0,1,0),r,1.4,2,64,8)
    ring(h,(x,end,z),(0,1,0),r,.55,1,64,8)
    # Hollow exit bowl in front of the solid engine body.
    vv=[]
    for yy,rr in [(end+.2,r*.9),(end-3,r*.82),(end-6,r*.58)]:
        for k in range(48):t=k*math.tau/48;vv.append((x+rr*math.cos(t),yy,z+rr*math.sin(t)))
    ff=[]
    for j in range(2):
        for k in range(48):a=j*48+k;b=j*48+(k+1)%48;ff.append((a,b,b+48,a+48))
    ff.append(tuple(96+k for k in range(48)));h.add(vv,ff,5)
    ring(h,(x,end-1,z),(0,1,0),r*.65,.85,5,48,8)
    for k in range(16):
        t=k*math.tau/16
        p1=(x+(r+.3)*math.cos(t),end-18,z+(r+.3)*math.sin(t));p2=(x+(r+.4)*math.cos(t),end-1,z+(r+.4)*math.sin(t))
        tube(h,[p1,p2],.6,2,6)
    THRUSTERS.append((x,end+.4,z))

# Six articulated harvesting tentacles, each a single rigid moving node at its socket.
arms=[]
for side in [-1,1]:
    for j,y in enumerate([-54,5,64]):
        idx=len(arms)+1;root=Vector((side*(41-j*1.5),y,-21+j*.4));g=Geo('"'Arm_'+str(idx),root)
        ellipsoid(h,root+Vector((0,0,2)),(10.2,10.8,5.7),0,24,10)
        ring(h,root,(0,0,1),7.4,1.1,2,40,8)
        ellipsoid(g,root,(6.3,6.3,6.5),1,24,12)
        points=[root,root+Vector((side*6,4,-13)),root+Vector((side*(19+j*2),14,-28)),root+Vector((side*(29-j*3),31+j*2,-43-j*2)),root+Vector((side*(23-j*3),42+j*2,-53+j*2))]
        pts=catmull(points,7);N=len(pts)
        rr=[4.8*(1-i/(N-1))+.95 for i in range(N)]
        tube(g,pts,rr,3,16)
        # Overlapping armoured vertebrae with a narrow band of tendon visible.
        for k in range(0,N-2,2):
            a,b=pts[k],pts[min(k+2,N-1)];mid=(a+b)/2;direction=(b-a).normalized();length=(b-a).length
            r=rr[k]+.4
            tube(g,[a,a+direction*.5,b-direction*.55,b],[r*.91,r*1.08,r*1.02,r*.85],0,14,.88)
            ring(g,a+direction*.6,direction,r*1.02,.22,1,14,6,.88)
            # One narrow spinal rail down every link; no free-floating greebles.
            lateral=Vector((side,0,0));tube(g,[a+lateral*r*.89,mid+lateral*(r+ .15),b+lateral*r*.79],[.3,.34,.22],2,6)
        # Twin flexor cables running continuously along the lower arm.
        for c in [-1,1]:
            cable=[p+Vector((c*rr[i]*.65,-rr[i]*.72,0)) for i,p in enumerate(pts)];tube(g,cable,.40,2,7)
        end=pts[-1];ellipsoid(g,end,(1.85,2.2,2.3),2,16,8)
        # Three hooked, cutting talons.
        for k in range(3):
            t=k*math.tau/3
            off=Vector((math.cos(t)*2.4,math.sin(t)*2.4,0))
            claw=catmull([end+off*.45,end+off+Vector((0,2,-3)),end+off*.8+Vector((0,4,-7)),end+Vector((0,2,-9))],4)
            tube(g,claw,[1.2*(1-i/(len(claw)-1))+.025 for i in range(len(claw))],2,9)
        arms.append(g)

# Fine-scale industrial fittings: inset inspection panels, cooling combs, fasteners, pipes.
# All are seated into plates, spaced in belts leaving broad quiet areas of armour.
for side in [-1,1]:
    for j,yy in enumerate([-175,-136,-92,-60,-9,30,108,139,171]):
        theta=side*1.2;p=surface(yy,theta,2)
        n=Vector((math.sin(theta),0,math.cos(theta)));a=Vector((0,1,0));b=n.cross(a).normalized();B=Matrix(((a.x,b.x,n.x),(a.y,b.y,n.y),(a.z,b.z,n.z)))
        rounded_box(h,p,(6.5,8.6,1),2,.55,B)
        rounded_box(h,p+n*.55,(4.9,6.6,.7),0,.45,B)
        for aa in [-2.4,2.4]:
            for bb in [-3.35,3.35]:
                q=p+a*aa+b*bb+n*.8;tube(h,[q,q+n*.18],.22,1,8)
        # Small slit receiver: the ship has no windows or cockpit.
        q=p+n*.95+b*(-1.5);rounded_box(h,q,(2.3,.44,.25),4,.10,B)
    for yy in [-150,-102,-63,-20,20,60,97,132]:
        theta=side*2.04;p=surface(yy,theta,1.5)
        n=Vector((math.sin(theta),0,math.cos(theta)));a=Vector((0,1,0));b=n.cross(a);B=Matrix(((a.x,b.x,n.x),(a.y,b.y,n.y),(a.z,b.z,n.z)))
        rounded_box(h,p,(14,4.4,1.2),3,.4,B)
        for k in range(8):rounded_box(h,p+a*((k-3.5)*1.45)+n*.7,(.68,3.5,.6),1,.18,B)
    # Long braided trunk pipes tucked into the shoulder seams.
    for theta in [side*.66,side*2.61]:
        pts=[surface(-145+i*300/36,theta,1.0) for i in range(37)];tube(h,pts,.55,2,8)
        for k in range(2,35,5):
            pp=pts[k];ring(h,pp,(0,1,0),.67,.12,1,12,6)
# Fine seam rivets follow aft upper-panel lips: human-scale on enormous plates.
for ya,yb in segments[1:-1]:
    for side in [-1,1]:
        for k in range(9):
            t=side*(.72+k*.055);p=surface(yb+4*math.sin(k/8*math.pi),t,2.0);n=Vector((math.sin(t),0,math.cos(t)))
            tube(h,[p,p+n*.26],.22,1,7)

log('Geometry authored '+str(sum(len(g.f) for g in [h]+arms))+' faces')
objs=[g.object() for g in [h]+arms];hull=objs[0]
# Normalize complete visible extents exactly to the requested envelope while keeping hull centre as origin.
bpy.context.view_layer.update()
points=[o.matrix_world@v.co for o in objs for v in o.data.vertices]
lo=Vector([min(v[k] for v in points) for k in range(3)]);hi=Vector([max(v[k] for v in points) for k in range(3)])
scale=Vector((160/(hi.x-lo.x),420/(hi.y-lo.y),120/(hi.z-lo.z)))
yshift=(hi.y+lo.y)/2
for ob in objs:
    pivot=ob.location.copy()
    for v in ob.data.vertices:
        wp=v.co+pivot;wp.y-=yshift;v.co=Vector([wp[k]*scale[k] for k in range(3)])-Vector([((pivot[k]-yshift) if k==1 else pivot[k])*scale[k] for k in range(3)])
    ob.location=Vector([((pivot[k]-yshift) if k==1 else pivot[k])*scale[k] for k in range(3)])
    if ob"'!=hull:ob.parent=hull
# Hull origin stays exactly zero; compensate the small centre shift into its mesh.
if hull.location.length:
    shift=hull.location.copy()
    for v in hull.data.vertices:v.co+=shift
    for ob in objs[1:]:ob.location+=shift
    hull.location=(0,0,0)
# Explicitly no transforms applied to the moving nodes.
for ob in objs:
    select(ob);mod=ob.modifiers.new('"'Triangulated runtime surface','TRIANGULATE');bpy.ops.object.modifier_apply(modifier=mod.name)

def worldp(p):
    p=Vector(p);p.y-=yshift;return Vector([p[k]*scale[k] for k in range(3)])
def empty(name,p,parent=hull):
    o=bpy.data.objects.new(name,None);sc.collection.objects.link(o);o.location=worldp(p);o.parent=parent;o.empty_display_size=2;return o
for i,p in enumerate(THRUSTERS):empty('Thruster_'+str(i+1),p)
empty('Camera_Chase',(0,315,110))
empty('Light_Nav_L',(58,5,1));empty('Light_Nav_R',(-58,5,1));empty('Light_Beacon',(0,34,35))
asset=[o for o in sc.objects]
bpy.context.view_layer.update()
tri=sum(len(o.data.polygons) for o in objs)
log('Triangles '+str(tri))
assert 80000<=tri<=200000,tri

# Renderer setup: dark blue space gradient, white upper-left key and cool fill.
world=bpy.data.worlds.new('Deep space');sc.world=world;world.use_nodes=True
nt=world.node_tree;nt.nodes.clear();out=node(nt,'ShaderNodeOutputWorld');bg=node(nt,'ShaderNodeBackground');bg.inputs['Strength'].default_value=.32
tex=node(nt,'ShaderNodeTexCoord');sep=node(nt,'ShaderNodeSeparateXYZ');nt.links.new(tex.outputs['Normal'],sep.inputs[0])
ramp=node(nt,'ShaderNodeValToRGB');ramp.color_ramp.elements[0].position=.2;ramp.color_ramp.elements[0].color=(.007,.012,.024,1);ramp.color_ramp.elements[1].position=.9;ramp.color_ramp.elements[1].color=(.055,.085,.14,1);nt.links.new(sep.outputs['Z'],ramp.inputs[0]);nt.links.new(ramp.outputs[0],bg.inputs['Color']);nt.links.new(bg.outputs[0],out.inputs[0])
def area(name,loc,power,size,col,target=(0,0,0)):
    d=bpy.data.lights.new(name,'AREA');d.energy=power;d.shape='DISK';d.size=size;d.color=col;o=bpy.data.objects.new(name,d);sc.collection.objects.link(o);o.location=loc;o.rotation_euler=(Vector(target)-o.location).to_track_quat('-Z','Y').to_euler();return o
area('Key daylight',(180,-240,280),4700000,210,(1,.93,.84))
area('Cool fill',(-190,-50,70),2800000,260,(.51,.68,1))
area('Aft rim',(100,220,200),5600000,170,(.68,.8,1))
area('Under bounce',(40,-80,-200),1300000,220,(.64,.72,.9))
camd=bpy.data.cameras.new('Render camera');cam=bpy.data.objects.new('Render camera',camd);sc.collection.objects.link(cam);sc.camera=cam;camd.clip_end=3000

def camera(kind='hero'):
    if kind=='hero':pos=(350,-520,255);target=(0,-6,-3);camd.type='ORTHO';camd.ortho_scale=470
    elif kind=='side':pos=(650,0,24);target=(0,0,-7);camd.type='ORTHO';camd.ortho_scale=466
    elif kind=='rear':pos=(325,490,180);target=(0,25,-3);camd.type='ORTHO';camd.ortho_scale=450
    else:pos=(139,-234,54);target=(34,-150,0);camd.type='ORTHO';camd.ortho_scale=130
    cam.location=pos;cam.rotation_euler=(Vector(target)-cam.location).to_track_quat('-Z','Y').to_euler()

def render(path,w=1920,hgt=1080,samples=32):
    sc.render.resolution_x=w;sc.render.resolution_y=hgt;sc.cycles.samples=samples;sc.render.filepath=str(OUT/path);log('Render '+str(path));bpy.ops.render.render(write_still=True)

# Paint is exported as a standard image + factor; the factor is patched into the binary JSON.
def set_paint(col):
    nt=MATS[0].node_tree;p=nt.nodes.get('Principled BSDF');t=nt.nodes.get('Base');mix=nt.nodes.get('Faction multiplier')
    if not mix:mix=node(nt,'ShaderNodeMixRGB');mix.name='Faction multiplier';mix.blend_type='MULTIPLY';mix.inputs[0].default_value=1;nt.links.new(t.outputs[0],mix.inputs[1])
    mix.inputs[2].default_value=(*col,1);nt.links.new(mix.outputs[0],p.inputs['Base Color'])

def export():
    nt=MATS[0].node_tree;p=nt.nodes.get('Principled BSDF');nt.links.new(nt.nodes['Base'].outputs[0],p.inputs['Base Color'])
    bpy.ops.object.select_all(action='DESELECT')
    for o in asset:o.select_set(True)
    bpy.context.view_layer.objects.active=hull
    fp=OUT/'alien-harvester.glb'
    bpy.ops.export_scene.gltf(filepath=str(fp),export_format='GLB',use_selection=True,export_yup=True,export_apply=False,export_texcoords=True,export_normals=True,export_materials='EXPORT',export_image_format='AUTO',export_cameras=False,export_lights=False,export_extras=True)
    data=fp.read_bytes();ln,tp=struct.unpack_from('<II',data,12);doc=json.loads(data[20:20+ln]);rest=data[20+ln:]
    for m in doc['materials']:
        if m['name']=='Paint':m['pbrMetallicRoughness']['baseColorFactor']=PAINTS[0][1]+[1]
    doc['asset']['copyright']='Original Forge alien harvester. CC0 Poly Haven: '+', '.join(PH_IDS)
    blob=json.dumps(doc,separators=(',',':')).encode();blob+=b' '*((-len(blob))%4)
    fp.write_bytes(struct.pack('<III',0x46546c67,2,20+len(blob)+len(rest))+struct.pack('<II',len(blob),0x4e4f534a)+blob+rest)
    log('GLB bytes '+str(fp.stat().st_size));assert fp.stat().st_size<=12*1024*1024
    return doc

doc=export();set_paint(PAINTS[0][1])

def game(v):return [round(v.x,5),round(v.z,5),round(-v.y,5)]
points=[o.matrix_world@v.co for o in objs for v in o.data.vertices]
lo=[min(game(v)[k] for v in points) for k in range(3)];hi=[max(game(v)[k] for v in points) for k in range(3)]
nodeinfo={o.name:{'position':game(o.matrix_world.translation),'type':'mesh' if o.type=='MESH' else 'empty','parent':o.parent.name if o.parent else None} for o in asset}
meta={'asset':'alien-harvester','units':'metres','forward':'+Z','up':'+Y','left':'+X','origin':'Hull centre of mass approximation','nodes':nodeinfo,'bounding_box':{'min':lo,'max':hi,'size':[round(hi[k]-lo[k],4) for k in range(3)]},'axes':{o.name:[0,0,1] for o in objs[1:]},'paints':[{'name':n,'linear_rgb':c} for n,c in PAINTS],'triangles':tri,'materials':[m.name for m in MATS],'texture_world_repeat_metres':8,'bake':{'engine':'Cycles','device':'GPU','samples':16,'base_normal_size':1024,'orm_size':512,'sources':PH_IDS},'checks':{'moving_transforms_applied':False,'pivot_rotation_degrees':30,'export_helpers':False}}
(OUT/'nodes.json').write_text(json.dumps(meta,indent=2))
(OUT/'NOTES.md').write_text('\\n'.join([
'Original 420 × 160 × 120 m alien harvester: layered carapace, intake maw, amber cooling vents, dorsal spines, six pivoted arms and three engine sockets.',
f'{tri:,} triangles; seven named mesh nodes; GLB { (OUT/\"alien-harvester.glb\").stat().st_size/1048576:.2f} MiB; nose +Z, up +Y, left +X, metres.',
'Materials: Paint, Titanium, HeatScorched, Recess, Lamps, Engines; Paint neutral texture × linear faction colour, default [0.10, 0.11, 0.10].',
'Cycles GPU baked tiling sets: four 1024² base-colour and normal maps, four 512² ORM maps; 8 m world-scale UV repeats; no unique hull atlas.',
'Poly Haven CC0 IDs: metal_plate, rusty_metal_02; https://polyhaven.com/license ; https://polyhaven.com/a/metal_plate ; https://polyhaven.com/a/rusty_metal_02 .',
'Reference differences: six larger harvesting arms as requested, bespoke overlapping armour layout and three recessed rear nozzles; no windows, lettering or logos.'
])+'\\n')
# Clay first: verifies actual built silhouettes before the material presentation.
camera();clay=bpy.data.materials.new('QA clay');clay.diffuse_color=(.36,.36,.36,1);clay.use_nodes=True;clay.node_tree.nodes['Principled BSDF'].inputs['Roughness'].default_value=.72
sc.view_layers[0].material_override=clay;render('clay.png',1920,1080,24);sc.view_layers[0].material_override=None
render('final.png',1920,1080,40)
camera('side');render('side.png',1920,1080,28)
camera('rear');render('rear.png',1280,720,24)
camera('close');render('close.png',1280,720,28)
# Proof of whole-assembly articulation: rotate each root 30 degrees about game +Z = Blender -Y.
camera()
for ob in objs[1:]:ob.rotation_euler.y=math.radians(-30)
bpy.context.view_layer.update()
for ob in objs[1:]:assert (ob.matrix_world.translation-Vector(nodeinfo[ob.name]['position'])[ [0,1,2][0] ]).length>=0 if False else True
render('arms-test.png',1280,720,24)
for ob in objs[1:]:ob.rotation_euler=(0,0,0)
# Six same-view paint renders assembled losslessly in Blender (no external dependency).
W,H=640,360;canvas=np.zeros((H*2,W*3,4),dtype=np.float32)
for i,(name,col) in enumerate(PAINTS):
    set_paint(col);render('paint-'+str(i)+'.png',W,H,16)
    im=bpy.data.images.load(str(OUT/('paint-'+str(i)+'.png')),check_existing=False);a=np.array(im.pixels[:],dtype=np.float32).reshape(H,W,4)
    row=1-i//3;column=i%3;canvas[row*H:(row+1)*H,column*W:(column+1)*W]=a;bpy.data.images.remove(im)
img=bpy.data.images.new('Paint comparison',width=W*3,height=H*2,alpha=True);img.pixels.foreach_set(canvas.ravel());img.filepath_raw=str(OUT/'paints.png');img.file_format='PNG';img.save()
set_paint(PAINTS[0][1]);camera();sc.render.resolution_x=1920;sc.render.resolution_y=1080
bpy.ops.wm.save_as_mainfile(filepath=str(OUT/'harvester-source.blend'))
log('COMPLETE')
PY
python3 -m py_compile build_alien-harvester.py
scp build_alien-harvester.py gex44:/root/fal-author/alien-harvester-v1/" in /home/claude-agent/forge-build/forge-assets/jobs/alien-harvester-v1
 succeeded in 748ms:
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/bin/bash -lc "ssh gex44 '/root/blender-spike/blender-5.2.0-linux-x64/blender -b --python-exit-code 1 --python /root/fal-author/alien-harvester-v1/build_alien-harvester.py -- --probe > /root/fal-author/alien-harvester-v1/probe.log 2>&1'" in /home/claude-agent/forge-build/forge-assets/jobs/alien-harvester-v1
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/bin/bash -lc "ssh gex44 'tail -25 /root/fal-author/alien-harvester-v1/probe.log'" in /home/claude-agent/forge-build/forge-assets/jobs/alien-harvester-v1
 succeeded in 424ms:
    pbr_metallic_roughness(mh)
    ~~~~~~~~~~~~~~~~~~~~~~^^^^
  File "/root/blender-spike/blender-5.2.0-linux-x64/5.2/scripts/addons_core/io_scene_gltf2/blender/imp/pbrMetallicRoughness.py", line 162, in pbr_metallic_roughness
    iridescence_factor_socket=mh.settings_node.inputs['Iridescence Factor'] if mh.settings_node else None,
                              ~~~~~~~~~~~~~~~~~~~~~~~^^^^^^^^^^^^^^^^^^^^^^
KeyError: 'bpy_prop_collection[key]: key "Iridescence Factor" not found'
Location: /root/fal-author/alien-harvester-v1/build_alien-harvester.py:144

Error: Python: Traceback (most recent call last):
  File "/root/blender-spike/blender-5.2.0-linux-x64/5.2/scripts/addons_core/io_scene_gltf2/__init__.py", line 2073, in execute
    return self.import_gltf2(context)
           ~~~~~~~~~~~~~~~~~^^^^^^^^^
  File "/root/blender-spike/blender-5.2.0-linux-x64/5.2/scripts/addons_core/io_scene_gltf2/__init__.py", line 2105, in import_gltf2
    return self.unit_import(self.filepath, import_settings)
           ~~~~~~~~~~~~~~~~^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/root/blender-spike/blender-5.2.0-linux-x64/5.2/scripts/addons_core/io_scene_gltf2/__init__.py", line 2120, in unit_import
    BlenderGlTF.create(gltf_importer)
    ~~~~~~~~~~~~~~~~~~^^^^^^^^^^^^^^^
  File "/root/blender-spike/blender-5.2.0-linux-x64/5.2/scripts/addons_core/io_scene_gltf2/blender/imp/blender_gltf.py", line 41, in create
    BlenderGlTF._create(gltf)
    ~~~~~~~~~~~~~~~~~~~^^^^^^
  File "/root/blender-spike/blender-5.2.0-linux-x64/5.2/scripts/addons_core/io_scene_glt... truncated
Error: script failed, file: '/root/fal-author/alien-harvester-v1/build_alien-harvester.py', exiting.

Blender quit

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/bin/bash -lc "ls -lah /home/claude-agent/.agents/skills/blender-game-assets/scripts && rg --files /tmp | rg '(three\\.module|gltf.*validate|GLTFLoader|playwright)' | head -15" in /home/claude-agent/forge-build/forge-assets/jobs/alien-harvester-v1
 succeeded in 0ms:
total 28K
drwxrwxr-x 4 claude-agent claude-agent 4.0K Oct  2 23:00 .
drwxrwxr-x 4 claude-agent claude-agent 4.0K Oct  2 20:32 ..
drwxrwxr-x 2 claude-agent claude-agent 4.0K Sep 20 22:07 __pycache__
-rw-rw-r-- 1 claude-agent claude-agent 8.2K Sep 20 22:07 audit_glb.py
drwxrwxr-x 2 claude-agent claude-agent 4.0K Oct  2 23:00 erosion
rg: /tmp/systemd-private-12b95ffe2619470090e50475912b26bb-hq-voice.service-sb2ObQ: Permission denied (os error 13)
rg: /tmp/snap-private-tmp: Permission denied (os error 13)
/tmp/playwright_chromiumdev_profile-bYh783/Local State
/tmp/playwright_chromiumdev_profile-bYh783/Last Version
/tmp/playwright_chromiumdev_profile-bYh783/extensions_crx_cache/metadata.json
/tmp/playwright_chromiumdev_profile-bYh783/ShaderCache/index
/tmp/playwright_chromiumdev_profile-bYh783/ShaderCache/data_2
/tmp/playwright_chromiumdev_profile-bYh783/ShaderCache/data_1
/tmp/playwright_chromiumdev_profile-bYh783/ShaderCache/data_0
/tmp/playwright_chromiumdev_profile-bYh783/ShaderCache/data_3
/tmp/playwright_chromiumdev_profile-bYh783/BrowserMetrics-spare.pma
/tmp/playwright_chromiumdev_profile-bYh783/component_crx_cache/metadata.json
/tmp/playwright_chromiumdev_profile-bYh783/first_party_sets.db-journal
/tmp/playwright_chromiumdev_profile-bYh783/GrShaderCache/index
/tmp/playwright_chromiumdev_profile-bYh783/GrShaderCache/data_2
/tmp/playwright_chromiumdev_profile-bYh783/GrShaderCache/data_1
/tmp/playwright_chromiumdev_profile-bYh783/GrShaderCache/data_0

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/bin/bash -lc "python3 - <<'PY'
p='build_alien-harvester.py'
s=open(p).read().replace(\"bpy.ops.object.delete();bpy.ops.import_scene.gltf(filepath=str(OUT/'probe.glb'))\", \"bpy.ops.object.delete()\\n    for mat in list(bpy.data.materials): bpy.data.materials.remove(mat)\\n    for group in list(bpy.data.node_groups): bpy.data.node_groups.remove(group)\\n    bpy.ops.import_scene.gltf(filepath=str(OUT/'probe.glb'))\")
s=s.replace(\"log('PROBE_OK');sys.exit(0)\", \"bpy.ops.object.camera_add(location=(3,-4,2));cam=bpy.context.object;cam.rotation_euler=(-cam.location).to_track_quat('-Z','Y').to_euler();sc.camera=cam\\n    bpy.ops.object.light_add(type='AREA',location=(2,-3,4));bpy.context.object.data.energy=500;bpy.context.object.data.size=4\\n    sc.render.resolution_x=256;sc.render.resolution_y=256;sc.render.filepath=str(OUT/'probe.png');bpy.ops.render.render(write_still=True)\\n    log('PROBE_OK');sys.exit(0)\")
s=s.replace(\"for ob in objs[1:]:assert (ob.matrix_world.translation-Vector(nodeinfo[ob.name]['position'])[ [0,1,2][0] ]).length>=0 if False else True\", \"for ob in objs[1:]:\\n    assert max(abs(a-b) for a,b in zip(game(ob.matrix_world.translation),nodeinfo[ob.name]['position']))<1e-4, 'Root pivot moved'\")
open(p,'w').write(s)
PY
scp build_alien-harvester.py gex44:/root/fal-author/alien-harvester-v1/ && ssh gex44 '/root/blender-spike/blender-5.2.0-linux-x64/blender -b --python-exit-code 1 --python /root/fal-author/alien-harvester-v1/build_alien-harvester.py -- --probe > /root/fal-author/alien-harvester-v1/probe.log 2>&1'" in /home/claude-agent/forge-build/forge-assets/jobs/alien-harvester-v1
 succeeded in 4488ms:
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exec
/bin/bash -lc "python3 - <<'PY'
p='build_alien-harvester.py';s=open(p).read().replace('    for ob in objs[1:]:ob.location+=shift\\n','')
s=s.replace(\"for ob in objs:\\n    select(ob);mod=ob.modifiers.new('Triangulated runtime surface','TRIANGULATE');bpy.ops.object.modifier_apply(modifier=mod.name)\",\"for ob in objs:\\n    select(ob);mod=ob.modifiers.new('Triangulated runtime surface','TRIANGULATE');bpy.ops.object.modifier_apply(modifier=mod.name)\\n    me=ob.data;uv=me.uv_layers.active\\n    for f in me.polygons:\\n        ax=max(range(3),key=lambda k:abs(f.normal[k]));axes=[k for k in range(3) if k"'!=ax]'"\\n        for li in f.loop_indices:\\n            p=me.vertices[me.loops[li].vertex_index].co+ob.location;uv.data[li].uv=(p[axes[0]]/8,p[axes[1]]/8)\")
open(p,'w').write(s)
PY
ssh gex44 'tail -8 /root/fal-author/alien-harvester-v1/probe.log'" in /home/claude-agent/forge-build/forge-assets/jobs/alien-harvester-v1
 succeeded in 412ms:
20:45:59 | INFO: Primitives created: 1
20:45:59 | INFO: Finished glTF 2.0 export in 0.04842185974121094 s

20:45:59 | INFO: Data are loaded, start creating Blender stuff
20:45:59 | INFO: Blender create Mesh node Sphere
20:45:59 | INFO: glTF import finished in 0.00s
00:03.061  render           | Saved: '/root/fal-author/alien-harvester-v1/probe.png'
HARVESTER 2.7 PROBE_OK

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/bin/bash -lc "scp gex44:/root/fal-author/alien-harvester-v1/probe.png /tmp/alien-harvester-probe.png && scp build_alien-harvester.py gex44:/root/fal-author/alien-harvester-v1/ && ssh gex44 '/root/blender-spike/blender-5.2.0-linux-x64/blender -b --python-exit-code 1 --python /root/fal-author/alien-harvester-v1/build_alien-harvester.py > /root/fal-author/alien-harvester-v1/build.log 2>&1'" in /home/claude-agent/forge-build/forge-assets/jobs/alien-harvester-v1
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codex
The GPU bake and GLB export/import probe passed. The first complete build is running now; I’ll check the maw depth, plate overlaps, and arm silhouettes in the clay and textured renders.

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/bin/bash -lc "ssh gex44 'tail -12 /root/fal-author/alien-harvester-v1/build.log' && command -v geminix && ls /tmp/node_modules/three/package.json /tmp/node_modules/playwright/package.json 2>/dev/null" in /home/claude-agent/forge-build/forge-assets/jobs/alien-harvester-v1
 exited 2 in 446ms:
Info: Baking map saved to internal image, save it externally or pack it
Info: Baking map saved to internal image, save it externally or pack it
Info: Baking map saved to internal image, save it externally or pack it
HARVESTER 1.9 Bake Titanium
Info: Baking map saved to internal image, save it externally or pack it
Info: Baking map saved to internal image, save it externally or pack it
Info: Baking map saved to internal image, save it externally or pack it
HARVESTER 3.4 Bake HeatScorched
Info: Baking map saved to internal image, save it externally or pack it
Info: Baking map saved to internal image, save it externally or pack it
Info: Baking map saved to internal image, save it externally or pack it
HARVESTER 5.8 Bake Recess
/home/claude-agent/bin/geminix

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exec
/bin/bash -lc "node -e \"for(const p of ['three','playwright','@playwright/test','gltf-validator']){try{console.log(p,require.resolve(p))}catch{}}\" && head -80 /home/claude-agent/bin/geminix && ssh gex44 'tail -8 /root/fal-author/alien-harvester-v1/build.log'" in /home/claude-agent/forge-build/forge-assets/jobs/alien-harvester-v1
 succeeded in 506ms:
#!/bin/sh
# geminix: one-shot / scriptable Gemini, Antigravity CLI harness (default since 14 Oct 2026):
#   geminix "prompt"   |   geminix < file.md      (prints the final answer as text)
# Old Claude Code lane: geminix-cc, or FORGE_GEMINI_HARNESS=claude-code.
[ "${FORGE_GEMINI_HARNESS:-antigravity}" = claude-code ] && exec "$HOME/bin/geminix-cc" "$@"
if [ $# -eq 0 ] && [ -t 0 ]; then
  echo "geminix: no prompt given, starting the interactive session" >&2
  exec "$HOME/bin/gemini"
fi
exec "$HOME/bin/agy4" --model forge:build-gemini-4 -p "$@"
  File "/root/fal-author/alien-harvester-v1/build_alien-harvester.py", line 531, in <module>
    assert 80000<=tri<=200000,tri
           ^^^^^^^^^^^^^^^^^^
AssertionError: 232678

Error: script failed, file: '/root/fal-author/alien-harvester-v1/build_alien-harvester.py', exiting.

Blender quit

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/bin/bash -lc "python3 - <<'PY'
p='build_alien-harvester.py';s=open(p).read();s=s.replace(\"    me=ob.data;uv=me.uv_layers.active\", \"    if ob==hull:\\n        dec=ob.modifiers.new('Runtime surface reduction','DECIMATE');dec.ratio=.78;dec.use_collapse_triangulate=True;bpy.ops.object.modifier_apply(modifier=dec.name)\\n    me=ob.data;uv=me.uv_layers.active\")
s=s.replace(\"img.filepath_raw=str(CACHE/(name+'_'+typ+'.png'));img.file_format='PNG';img.save();baked[typ]=img\", \"img.filepath_raw=str(CACHE/(name+'_'+typ+('.jpg' if typ=='Base' else '.png')));img.file_format='JPEG' if typ=='Base' else 'PNG';sc.render.image_settings.quality=90;img.save();baked[typ]=img\")
s=s.replace(\"    data=fp.read_bytes();\", \"    (OUT/'alien-harvester.audit.glb').write_bytes(fp.read_bytes())\\n    bpy.ops.export_scene.gltf(filepath=str(fp),export_format='GLB',use_selection=True,export_yup=True,export_apply=False,export_texcoords=True,export_normals=True,export_materials='EXPORT',export_image_format='AUTO',export_cameras=False,export_lights=False,export_extras=True,export_draco_mesh_compression_enable=True,export_draco_mesh_compression_level=6,export_draco_position_quantization=16,export_draco_normal_quantization=10,export_draco_texcoord_quantization=14)\\n    data=fp.read_bytes();\")
open(p,'w').write(s)
PY
scp build_alien-harvester.py gex44:/root/fal-author/alien-harvester-v1/ && ssh gex44 '/root/blender-spike/blender-5.2.0-linux-x64/blender -b --python-exit-code 1 --python /root/fal-author/alien-harvester-v1/build_alien-harvester.py > /root/fal-author/alien-harvester-v1/build.log 2>&1'" in /home/claude-agent/forge-build/forge-assets/jobs/alien-harvester-v1
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exec
/bin/bash -lc 'mkdir -p /tmp/alien-harvester-check && npm install --prefix /tmp/alien-harvester-check three playwright gltf-validator > /tmp/alien-harvester-check/install.log 2>&1' in /home/claude-agent/forge-build/forge-assets/jobs/alien-harvester-v1
 succeeded in 3371ms:
 exited 1 in 23848ms:
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exec
/bin/bash -lc "cat > /tmp/alien-harvester-check/index.html <<'HTML'
<"'!doctype html><meta charset="utf-8"><style>body{margin:0;background:#03070c}canvas{display:block}</style>
<script type="importmap">{"imports":{"three":"./node_modules/three/build/three.module.js","three/addons/":"./node_modules/three/examples/jsm/"}}</script>
<script type="module">
import * as T from '"'three';
import {GLTFLoader} from 'three/addons/loaders/GLTFLoader.js';
import {DRACOLoader} from 'three/addons/loaders/DRACOLoader.js';
const r=new T.WebGLRenderer({antialias:true,preserveDrawingBuffer:true});r.setSize(1600,900);r.setPixelRatio(1);r.outputColorSpace=T.SRGBColorSpace;r.toneMapping=T.AgXToneMapping;r.toneMappingExposure=1;document.body.append(r.domElement);
const s=new T.Scene();s.background=new T.Color('#050a12');
const camera=new T.OrthographicCamera(-235,235,235*900/1600,-235*900/1600,1,2000);camera.position.set(350,255,520);camera.lookAt(0,-3,6);
s.add(new T.HemisphereLight(0x99bbff,0x606b86,1.5));
for(const [p,c,pow] of [[[180,280,240],0xfff2e4,4.5],[[-190,70,50],0x82adff,2],[[100,200,-220],0xadcaff,4.7]]){const l=new T.DirectionalLight(c,pow);l.position.set(...p);s.add(l)}
const draco=new DRACOLoader();draco.setDecoderPath('./node_modules/three/examples/jsm/libs/draco/gltf/');
const loader=new GLTFLoader();loader.setDRACOLoader(draco);
try{
const gltf=await loader.loadAsync('./alien-harvester.glb');const model=gltf.scene;s.add(model);s.updateMatrixWorld(true);
const bounds=new T.Box3().setFromObject(model);let tris=0,meshes=0;let textures=new Map(),mats=new Map(),nodes={};
model.traverse(o=>{nodes[o.name]=o.getWorldPosition(new T.Vector3()).toArray();if(o.isMesh){meshes++;tris+=(o.geometry.index?.count||o.geometry.attributes.position.count)/3;for(const m of Array.isArray(o.material)?o.material:[o.material]){mats.set(m.name,m);for(const k of ['map','normalMap','roughnessMap','metalnessMap','aoMap']){const t=m[k];if(t)textures.set(t.uuid,[t.image.width,t.image.height,k])}}}});
r.render(s,camera);window.report={bounds:[bounds.min.toArray(),bounds.max.toArray()],size:bounds.getSize(new T.Vector3()).toArray(),triangles:tris,meshes,drawCalls:r.info.render.calls,materials:[...mats.keys()],textures:[...textures.values()],nodes,paint:mats.get('Paint')?.color.toArray(),backend:r.getContext().getParameter(r.getContext().RENDERER)};
window.articulate=()=>{model.traverse(o=>{if(/"'^Arm_'"\\d+"'$/.test(o.name))o.rotation.z=Math.PI/6});r.render(s,camera)};
window.mapsOff=()=>{for(const m of mats.values()){m.normalMap=null;m.aoMap=null;m.needsUpdate=true;}r.render(s,camera)};
window.ready=true;
}catch(e){window.failure=String(e);console.error(e)}
</script>
HTML
cat > /tmp/alien-harvester-check/check.cjs <<'"'JS'
const {chromium}=require('playwright');const fs=require('fs');
(async()=>{const browser=await chromium.launch({headless:true,args:['--no-sandbox','--use-angle=swiftshader','--enable-unsafe-swiftshader']});const page=await browser.newPage({viewport:{width:1600,height:900}});let errors=[];page.on('pageerror',e=>errors.push(String(e)));await page.goto('http://127.0.0.1:8847/');await page.waitForFunction(()=>window.ready||window.failure,{timeout:120000});const report=await page.evaluate(()=>window.report||window.failure);fs.writeFileSync('/tmp/alien-harvester-check/report.json',JSON.stringify({report,errors},null,2));await page.screenshot({path:'/tmp/alien-harvester-check/runtime.png'});await page.evaluate(()=>window.articulate());await page.screenshot({path:'/tmp/alien-harvester-check/runtime-arms.png'});await browser.close();console.log(JSON.stringify({report,errors},null,2));})();
JS
ssh gex44 'tail -12 /root/fal-author/alien-harvester-v1/build.log'" in /home/claude-agent/forge-build/forge-assets/jobs/alien-harvester-v1
 succeeded in 692ms:
  File "/root/blender-spike/blender-5.2.0-linux-x64/5.2/scripts/addons_core/io_scene_gltf2/blender/exp/export.py", line 37, in save
    json, buffer = __export(export_settings)
                   ~~~~~~~~^^^^^^^^^^^^^^^^^
  File "/root/blender-spike/blender-5.2.0-linux-x64/5.2/scripts/addons_core/io_scene_gltf2/blender/exp/export.py", line 55, in __export
    __gather_gltf(exporter, export_settings)
    ~~~~~~~~~~~~~^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/root/blender-spike/blender-5.2.0-linux-x64/5.2/scripts/addons_core/io_scene_gltf2/blender/exp/export.py", line 394, in __gather_gltf
    gltf2_io_draco_compression_extension.encode_scene_primitives(scenes, export_settings)
    ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~^^^^^^^^^^^^^^^^^... truncated
Error: script failed, file: '/root/fal-author/alien-harvester-v1/build_alien-harvester.py', exiting.

Blender quit

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exec
/bin/bash -lc "ssh gex44 \"grep -E 'HARVESTER|Error|AttributeError|TypeError|ValueError|Exception|draco|Assertion' /root/fal-author/alien-harvester-v1/build.log | tail -24; ls -lh /root/fal-author/alien-harvester-v1/*.glb\"" in /home/claude-agent/forge-build/forge-assets/jobs/alien-harvester-v1
 succeeded in 515ms:
00:01.178  cycles           | WARNING HIPEW initialization failed: Error opening HIP dynamic library
HARVESTER 0.0 GPU ['NVIDIA RTX 4000 SFF Ada Generation', 'NVIDIA RTX 4000 SFF Ada Generation']
HARVESTER 0.0 Bake Paint
HARVESTER 3.2 Bake Titanium
HARVESTER 5.5 Bake HeatScorched
HARVESTER 7.8 Bake Recess
HARVESTER 11.2 Geometry authored 113811 faces
HARVESTER 19.5 Triangles 191364
INFO Draco is available, use library at /root/blender-spike/blender-5.2.0-linux-x64/5.2/scripts/addons_core/io_scene_gltf2/libbf_intern_draco_bridge.so
    gltf2_io_draco_compression_extension.encode_scene_primitives(scenes, export_settings)
  File "/root/blender-spike/blender-5.2.0-linux-x64/5.2/scripts/addons_core/io_scene_gltf2/io/exp/draco.py", line 18, in encode_scene_primitives
    dll = cdll.LoadLibrary(str(dll_path('bf_intern_draco_bridge', 'Draco').resolve()))
OSError: libdraco.so.9: cannot open shared object file: No such file or directory
    bpy.ops.export_scene.gltf(filepath=str(fp),export_format='GLB',use_selection=True,export_yup=True,export_apply=False,export_texcoords=True,export_normals=True,export_materials='EXPORT',export_image_format='AUTO',export_cameras=False,export_lights=False,export_extras=True,export_draco_mesh_compression_enable=True,export_draco_mesh_compression_level=6,export_draco_position_quantization=16,export_draco_normal_quantization=10,export_draco_texcoord_quantization=14)
RuntimeError: Error: Python: Traceback (most recent call last):
    gltf2_io_draco_compression_extension.encode_scene_primitives(scenes, export_settings)
  File "/root/blender-spike/blender-5.2.0-linux-x64/5.2/scripts/addons_core/io_scene_gltf2/io/exp/draco.py", line 18, in encode_scene_primitives
    dll = cdll.LoadLibrary(str(dll_path('bf_intern_draco_bridge', 'Draco').resolve()))
OSError: libdraco.so.9: cannot open shared object file: No such file or directory
Error: Python: Traceback (most recent call last):
    gltf2_io_draco_compression_extension.encode_scene_primitives(scenes, export_settings)
Error: script failed, file: '/root/fal-author/alien-harvester-v1/build_alien-harvester.py', exiting.
-rw-r--r-- 1 root root  14M Oct 16 20:47 /root/fal-author/alien-harvester-v1/alien-harvester.audit.glb
-rw-r--r-- 1 root root  14M Oct 16 20:47 /root/fal-author/alien-harvester-v1/alien-harvester.glb
-rw-r--r-- 1 root root 2.0M Oct 16 20:45 /root/fal-author/alien-harvester-v1/probe.glb

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/bin/bash -lc "scp gex44:/root/fal-author/alien-harvester-v1/alien-harvester.audit.glb /tmp/alien-harvester-check/audit.glb && python3 - <<'PY'
import json,struct
p='/tmp/alien-harvester-check/audit.glb';d=open(p,'rb').read();n=struct.unpack_from('<I',d,12)[0];j=json.loads(d[20:20+n]);print('bytes',len(d));print('image sizes',[(i['name'],j['bufferViews'][i['bufferView']]['byteLength']) for i in j['images']]);print('prims',sum(len(m['primitives']) for m in j['meshes']))
PY" in /home/claude-agent/forge-build/forge-assets/jobs/alien-harvester-v1
 succeeded in 1258ms:
bytes 13991648
image sizes [('Paint_Normal', 1350964), ('Paint_ORM', 297912), ('Paint_Base', 43709), ('Titanium_Normal', 1350964), ('Titanium_ORM', 298711), ('Titanium_Base', 58088), ('HeatScorched_Normal', 1339912), ('HeatScorched_ORM', 235125), ('HeatScorched_Base', 164180), ('Recess_Normal', 1350963), ('Recess_ORM', 297302), ('Recess_Base', 38878)]
prims 30

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/bin/bash -lc "python3 - <<'PY'
p='build_alien-harvester.py';s=open(p).read()
a=\"for name,col,strength in [('Lamps'\"
s=s.replace(a,\"# Identical metal stock normal bakes share one image in the delivered GLB.\\nfor idx in [1,3]:MATS[idx].node_tree.nodes['Normal'].image=MATS[0].node_tree.nodes['Normal'].image\\n\\n\"+a)
lines=s.splitlines();lines=[l for l in lines if 'export_draco_mesh_compression_enable=True' not in l];s='\\n'.join(lines)+'\\n';open(p,'w').write(s)
PY
scp build_alien-harvester.py gex44:/root/fal-author/alien-harvester-v1/ && ssh gex44 '/root/blender-spike/blender-5.2.0-linux-x64/blender -b --python-exit-code 1 --python /root/fal-author/alien-harvester-v1/build_alien-harvester.py > /root/fal-author/alien-harvester-v1/build.log 2>&1'" in /home/claude-agent/forge-build/forge-assets/jobs/alien-harvester-v1
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/bin/bash -lc 'cat /tmp/alien-harvester-check/install.log && python3 /home/claude-agent/.agents/skills/blender-game-assets/scripts/audit_glb.py /tmp/alien-harvester-check/audit.glb --strict' in /home/claude-agent/forge-build/forge-assets/jobs/alien-harvester-v1
 succeeded in 210ms:

added 4 packages in 3s
{
  "file": "audit.glb",
  "sha256": "d64b17ce4f74285baa91cc4d51fc6ff4380585810373eae73b47365795d74c9a",
  "bytes": 13991648,
  "primitive_count": 30,
  "material_count": 6,
  "embedded_images": 12,
  "external_uris": [],
  "primitives": [
    {
      "mesh": "Arm_1",
      "primitive": 0,
      "triangles": 1512,
      "zero_area_triangles": 0,
      "nonfinite_attribute_components": 0
    },
    {
      "mesh": "Arm_1",
      "primitive": 1,
      "triangles": 2880,
      "zero_area_triangles": 0,
      "nonfinite_attribute_components": 0
    },
    {
      "mesh": "Arm_1",
      "primitive": 2,
      "triangles": 2166,
      "zero_area_triangles": 0,
      "nonfinite_attribute_components": 0
    },
    {
      "mesh": "Arm_1",
      "primitive": 3,
      "triangles": 924,
      "zero_area_triangles": 0,
      "nonfinite_attribute_components": 0
    },
    {
      "mesh": "Arm_2",
      "primitive": 0,
      "triangles": 1512,
      "zero_area_triangles": 0,
      "nonfinite_attribute_components": 0
    },
    {
      "mesh": "Arm_2",
      "primitive": 1,
      "triangles": 2880,
      "zero_area_triangles": 0,
      "nonfinite_attribute_components": 0
    },
    {
      "mesh": "Arm_2",
      "primitive": 2,
      "triangles": 2166,
      "zero_area_triangles": 0,
      "nonfinite_attribute_components": 0
    },
    {
      "mesh": "Arm_2",
      "primitive": 3,
      "triangles": 924,
      "zero_area_triangles": 0,
      "nonfinite_attribute_components": 0
    },
    {
      "mesh": "Arm_3",
      "primitive": 0,
      "triangles": 1512,
      "zero_area_triangles": 0,
      "nonfinite_attribute_components": 0
    },
    {
      "mesh": "Arm_3",
      "primitive": 1,
      "triangles": 2880,
      "zero_area_triangles": 0,
      "nonfinite_attribute_components": 0
    },
    {
      "mesh": "Arm_3",
      "primitive": 2,
      "triangles": 2166,
      "zero_area_triangles": 0,
      "nonfinite_attribute_components": 0
    },
    {
      "mesh": "Arm_3",
      "primitive": 3,
      "triangles": 924,
      "zero_area_triangles": 0,
      "nonfinite_attribute_components": 0
    },
    {
      "mesh": "Arm_4",
      "primitive": 0,
      "triangles": 1512,
      "zero_area_triangles": 0,
      "nonfinite_attribute_components": 0
    },
    {
      "mesh": "Arm_4",
      "primitive": 1,
      "triangles": 2880,
      "zero_area_triangles": 0,
      "nonfinite_attribute_components": 0
    },
    {
      "mesh": "Arm_4",
      "primitive": 2,
      "triangles": 2166,
      "zero_area_triangles": 0,
      "nonfinite_attribute_components": 0
    },
    {
      "mesh": "Arm_4",
      "primitive": 3,
      "triangles": 924,
      "zero_area_triangles": 0,
      "nonfinite_attribute_components": 0
    },
    {
      "mesh": "Arm_5",
      "primitive": 0,
      "triangles": 1512,
      "zero_area_triangles": 0,
      "nonfinite_attribute_components": 0
    },
    {
      "mesh": "Arm_5",
      "primitive": 1,
      "triangles": 2880,
      "zero_area_triangles": 0,
      "nonfinite_attribute_components": 0
    },
    {
      "mesh": "Arm_5",
      "primitive": 2,
      "triangles": 2166,
      "zero_area_triangles": 0,
      "nonfinite_attribute_components": 0
    },
    {
      "mesh": "Arm_5",
      "primitive": 3,
      "triangles": 924,
      "zero_area_triangles": 0,
      "nonfinite_attribute_components": 0
    },
    {
      "mesh": "Arm_6",
      "primitive": 0,
      "triangles": 1512,
      "zero_area_triangles": 0,
      "nonfinite_attribute_components": 0
    },
    {
      "mesh": "Arm_6",
      "primitive": 1,
      "triangles": 2880,
      "zero_area_triangles": 0,
      "nonfinite_attribute_components": 0
    },
    {
      "mesh": "Arm_6",
      "primitive": 2,
      "triangles": 2166,
      "zero_area_triangles": 0,
      "nonfinite_attribute_components": 0
    },
    {
      "mesh": "Arm_6",
      "primitive": 3,
      "triangles": 924,
      "zero_area_triangles": 0,
      "nonfinite_attribute_components": 0
    },
    {
      "mesh": "Hull",
      "primitive": 0,
      "triangles": 47316,
      "zero_area_triangles": 0,
      "nonfinite_attribute_components": 0
    },
    {
      "mesh": "Hull",
      "primitive": 1,
      "triangles": 36044,
      "zero_area_triangles": 0,
      "nonfinite_attribute_components": 0
    },
    {
      "mesh": "Hull",
      "primitive": 2,
      "triangles": 35696,
      "zero_area_triangles": 0,
      "nonfinite_attribute_components": 0
    },
    {
      "mesh": "Hull",
      "primitive": 3,
      "triangles": 13012,
      "zero_area_triangles": 0,
      "nonfinite_attribute_components": 0
    },
    {
      "mesh": "Hull",
      "primitive": 4,
      "triangles": 11520,
      "zero_area_triangles": 0,
      "nonfinite_attribute_components": 0
    },
    {
      "mesh": "Hull",
      "primitive": 5,
      "triangles": 2884,
      "zero_area_triangles": 0,
      "nonfinite_attribute_components": 0
    }
  ],
  "duplicate_primitives": [],
  "note": "Mesh-local counts, before node transforms/instances. Degenerate threshold: cross-product magnitude < 1e-12 in asset units squared. Not a source-topology or visual-quality verdict.",
  "triangles": 191364,
  "zero_area_triangles": 0,
  "nonfinite_attribute_components": 0,
  "findings": []
}

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/bin/bash -lc "ssh gex44 'tail -12 /root/fal-author/alien-harvester-v1/build.log' && ls -d /home/claude-agent/.cache/ms-playwright/chromium* 2>/dev/null" in /home/claude-agent/forge-build/forge-assets/jobs/alien-harvester-v1
 succeeded in 463ms:
Info: Baking map saved to internal image, save it externally or pack it
HARVESTER 4.6 Bake HeatScorched
Info: Baking map saved to internal image, save it externally or pack it
Info: Baking map saved to internal image, save it externally or pack it
Info: Baking map saved to internal image, save it externally or pack it
HARVESTER 7.1 Bake Recess
/root/fal-author/alien-harvester-v1/build_alien-harvester.py:159: DeprecationWarning: 'Material.use_nodes' is expected to be removed in Blender 6.0
  m=bpy.data.materials.new(name);m.use_nodes=True;p=m.node_tree.nodes.get('Principled BSDF');p.inputs['Base Color'].default_value=col;p.inputs['Roughness'].default_value=.34;p.inputs['Metallic'].default_value=.3;p.inputs['Emission Color'].default_value=col;p.inputs['Emission Strength'].default_value=strength;MATS.append(m)
Info: Baking map saved to internal image, save it externally or pack it
Info: Baking map saved to internal image, save it externally or pack it
Info: Baking map saved to internal image, save it externally or pack it
HARVESTER 9.6 Geometry authored 113811 faces
/home/claude-agent/.cache/ms-playwright/chromium-1161
/home/claude-agent/.cache/ms-playwright/chromium-1223
/home/claude-agent/.cache/ms-playwright/chromium_headless_shell-1161
/home/claude-agent/.cache/ms-playwright/chromium_headless_shell-1223

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/bin/bash -lc "python3 - <<'PY'
p='/tmp/alien-harvester-check/check.cjs';s=open(p).read().replace(\"headless:true,args:\",\"headless:true,executablePath:'/home/claude-agent/.cache/ms-playwright/chromium-1223/chrome-linux64/chrome',args:\");open(p,'w').write(s)
PY
ls /home/claude-agent/.cache/ms-playwright/chromium-1223/ && python3 -m http.server 8847 --directory /tmp/alien-harvester-check" in /home/claude-agent/forge-build/forge-assets/jobs/alien-harvester-v1
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/bin/bash -lc "ssh gex44 'tail -10 /root/fal-author/alien-harvester-v1/build.log'" in /home/claude-agent/forge-build/forge-assets/jobs/alien-harvester-v1
 succeeded in 445ms:
20:48:46 | INFO: Extracting primitive: Arm_6
20:48:46 | INFO: Primitives created: 4
20:48:46 | INFO: Finished glTF 2.0 export in 0.902367353439331 s

HARVESTER 19.8 GLB bytes 11289612
/root/fal-author/alien-harvester-v1/build_alien-harvester.py:601: DeprecationWarning: 'Material.use_nodes' is expected to be removed in Blender 6.0
  camera();clay=bpy.data.materials.new('QA clay');clay.diffuse_color=(.36,.36,.36,1);clay.use_nodes=True;clay.node_tree.nodes['Principled BSDF'].inputs['Roughness'].default_value=.72
HARVESTER 21.0 Render clay.png
00:33.410  render           | Saved: '/root/fal-author/alien-harvester-v1/clay.png'
HARVESTER 32.9 Render final.png

codex
The first export is complete: 191,364 triangles, six materials, and an 11.29 MB GLB. The geometry audit found no degenerate triangles or invalid coordinates. I’ll now check the renders and load the exported file in a browser to verify its materials and arm nodes.

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/bin/bash -lc "scp gex44:/root/fal-author/alien-harvester-v1/{alien-harvester.glb,clay.png,final.png,nodes.json,NOTES.md} . && cp alien-harvester.glb /tmp/alien-harvester-check/ && sed -i 's@chrome-linux64/chrome@chrome-linux/chrome@' /tmp/alien-harvester-check/check.cjs && node /tmp/alien-harvester-check/check.cjs > /tmp/alien-harvester-check/browser.log 2>&1" in /home/claude-agent/forge-build/forge-assets/jobs/alien-harvester-v1
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 succeeded in 11632ms:
 succeeded in 80080ms:
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/bin/bash -lc "ssh gex44 'tail -7 /root/fal-author/alien-harvester-v1/build.log' && cat /tmp/alien-harvester-check/browser.log | head -35 && scp gex44:/root/fal-author/alien-harvester-v1/{close.png,side.png,arms-test.png,paints.png} ." in /home/claude-agent/forge-build/forge-assets/jobs/alien-harvester-v1
 succeeded in 4362ms:
01:16.527  render           | Saved: '/root/fal-author/alien-harvester-v1/paint-4.png'
HARVESTER 76.1 Render paint-5.png
01:18.247  render           | Saved: '/root/fal-author/alien-harvester-v1/paint-5.png'
Info: Saved as "harvester-source.blend"
HARVESTER 77.9 COMPLETE

Blender quit
{
  "report": {
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    "size": [
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    "triangles": 191364,
    "meshes": 30,
    "drawCalls": 30,
    "materials": [
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      "Titanium",
      "HeatScorched",
      "Recess",
      "Lamps",
      "Engines"
    ],
    "textures": [
      [
        1024,
        1024,
        "map"

codex
The first renders show the main forms, but the hull is too clean and brightly lit, and the arms look too straight. I’m lowering the viewing angle, adding stronger armour overlaps and surface wear, and giving the six arms deeper bends to better match the reference.

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/bin/bash -lc "mkdir -p /tmp/alien-harvester-review && timeout 240 geminix 'Independent visual critique only; do not edit files or spawn workers. Read applicable rules. Open these actual images with your image tools: /home/claude-agent/forge-build/forge-assets/jobs/alien-harvester-v1/sheet.jpg and final.png, close.png, side.png in that same directory. Task: realistic 420m alien harvester game asset matching the reference, six arms mandated, no windows. Compare silhouette, material realism, panel construction, arms and maw. Return at most five specific visual findings, ordered by impact, each with measurable acceptance; say if unable to see images. Author already identifies overly clean light hull and straight arms and intends to fix them. Verdict PASS/REVISE/BLOCKED. Finish within three minutes.' > /tmp/alien-harvester-review/review.txt 2>&1" in /home/claude-agent/forge-build/forge-assets/jobs/alien-harvester-v1
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/bin/bash -lc "ssh gex44 \"python3 - <<'PY'
import urllib.request
from pathlib import Path
for n in ['rusty_painted_metal','metal_plate_02']:
 u=f'https://dl.polyhaven.org/file/ph-assets/Textures/jpg/1k/{n}/{n}_diff_1k.jpg'
 req=urllib.request.Request(u,headers={'User-Agent':'Mozilla/5.0'})
 Path('/root/fal-author/alien-harvester-v1/textures/'+n+'_diff_1k.jpg').write_bytes(urllib.request.urlopen(req).read())
PY\" && scp gex44:/root/fal-author/alien-harvester-v1/textures/{rusty_painted_metal_diff_1k.jpg,metal_plate_02_diff_1k.jpg} /tmp/alien-harvester-check/" in /home/claude-agent/forge-build/forge-assets/jobs/alien-harvester-v1
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/bin/bash -lc "cp build_alien-harvester.py /tmp/alien-harvester-check/build-v1.py
python3 - <<'PY'
p='build_alien-harvester.py';s=open(p).read()
s=s.replace(\"PH_IDS=['metal_plate','rusty_metal_02']\",\"PH_IDS=['metal_plate','metal_plate_02','rusty_metal_02']\")
s=s.replace(\"lum=mathnode(nt,'ADD',mathnode(nt,'MULTIPLY',bw.outputs[0],.29),.66)\\n        base=color_mix(nt,lum,noise.outputs['Fac'],.08,'MULTIPLY');rough=.39;metal=.67\", \"lum=mathnode(nt,'MINIMUM',mathnode(nt,'ADD',mathnode(nt,'MULTIPLY',bw.outputs[0],3.7),.36),.96)\\n        macro=node(nt,'ShaderNodeTexNoise');macro.inputs['Scale'].default_value=3.5;macro.inputs['Detail'].default_value=5;lk.new(uv.outputs['UV'],macro.inputs['Vector'])\\n        grime=mathnode(nt,'ADD',mathnode(nt,'MULTIPLY',macro.outputs['Fac'],.38),.62)\\n        base=color_mix(nt,lum,grime,1,'MULTIPLY');rough=.30;metal=.64\")
s=s.replace(\"(.19,.22,.25,1),.65);rough=.38;metal=.9\",\"(.12,.15,.19,1),.80);rough=.31;metal=.9\")
s=s.replace(\"(.065,.042,.026,1),.73);rough=.58;metal=.76\",\"(.035,.024,.018,1),.93);rough=.43;metal=.76\")
s=s.replace(\"bake_material('Paint','paint','metal_plate')\",\"bake_material('Paint','paint','metal_plate_02')\")
s=s.replace(\"for idx in [1,3]:MATS[idx].node_tree.nodes['Normal'].image=MATS[0].node_tree.nodes['Normal'].image\", \"MATS[3].node_tree.nodes['Normal'].image=MATS[1].node_tree.nodes['Normal'].image\")
# save the normal tile at 768 for nonpaint to contain the GLB under game budget.
s=s.replace(\"for typ,res in [('Base',1024),('Normal',1024),('ORM',512)]:\", \"for typ,res in [('Base',1024),('Normal',1024 if kind=='paint' else 768),('ORM',512)]:\")
s=s.replace(\"return Vector(((w+offset)*math.sin(t),y,c+(z+offset)*math.cos(t)))\", \"return Vector(((w*1.05+offset)*math.sin(t),y,c+(z*1.30+offset)*math.cos(t)))\")
s=s.replace(\"v=i/nv;t=ta+(tb-ta)*v\", \"v=i/nv;t=ta+(tb-ta)*v+.042*math.sin(u*math.pi)*(1 if ta+tb>0 else -1)\")
s=s.replace(\"segments=[(-197,-157),(-156,-108),(-107,-57),(-56,-9),(-8,38),(39,81),(82,120),(121,151),(152,180),(181,200)]\", \"segments=[(-197,-169),(-168,-126),(-125,-72),(-71,-26),(-25,17),(18,58),(59,98),(99,133),(134,166),(167,200)]\")
s=s.replace(\"cx=shape(cy)[0]-.5\", \"cx=shape(cy)[0]*1.05-.5\")
s=s.replace(\"tube(h,pts,[2.9+1.2*math.sin(i/(len(pts)-1)*math.pi) for i in range(len(pts))],0,12,.8)\", \"tube(h,pts,[2.0+3.0*math.sin(i/(len(pts)-1)*math.pi) for i in range(len(pts))],0,12,.52)\")
s=s.replace(\"theta=row*.43;base=surface(yy,theta,2.0);ht=(23 if row==0 else 18)*math.sin((i+1)/9*math.pi)**.5\", \"theta=row*.43;base=surface(yy+row*3,theta,2.0);ht=(23 if row==0 else 18)*math.sin((i+1)/9*math.pi)**.5*(1+.10*math.sin(i*2.7))\")
s=s.replace(\"root=Vector((side*(41-j*1.5),y,-21+j*.4))\", \"root=Vector((side*(44-j*1.5),y+(10 if side<0 else 0),-29+j*.4))\")
s=s.replace(\"points=[root,root+Vector((side*6,4,-13)),root+Vector((side*(19+j*2),14,-28)),root+Vector((side*(29-j*3),31+j*2,-43-j*2)),root+Vector((side*(23-j*3),42+j*2,-53+j*2))]\", \"curl=[(6,3,-12),(19,10,-26),(31-j*3,29+j*4,-39-j*2),(28-j*2,38+j*3,-51-j*2),(17+j*2,26+j*7,-54-j+(3 if side<0 else 0))]\\n        points=[root]+[root+Vector((side*x,dy,dz)) for x,dy,dz in curl]\")
s=s.replace(\"off=Vector((math.cos(t)*2.4,math.sin(t)*2.4,0))\", \"off=Vector((math.cos(t)*4.0,math.sin(t)*4.0,0))\")
s=s.replace(\"end+off+Vector((0,2,-3)),end+off*.8+Vector((0,4,-7)),end+Vector((0,2,-9))\", \"end+off*1.4+Vector((0,1,-3)),end+off*1.2+Vector((0,2,-7)),end+off*.55+Vector((0,2,-10))\")
s=s.replace(\"dec.ratio=.78\", \"dec.ratio=.72\")
s=s.replace(\"4700000,210\", \"850000,180\").replace(\"2800000,260\", \"480000,230\").replace(\"5600000,170\", \"1250000,170\").replace(\"1300000,220\", \"290000,220\")
s=s.replace(\"pos=(350,-520,255)\", \"pos=(620,-460,235)\")
s=s.replace(\"clay.node_tree.nodes['Principled BSDF'].inputs['Roughness'].default_value=.72\", \"clay.node_tree.nodes['Principled BSDF'].inputs['Roughness'].default_value=.72;clay.node_tree.nodes['Principled BSDF'].inputs['Base Color'].default_value=(.36,.36,.36,1)\")
s=s.replace(\"four 1024² base-colour and normal maps, four 512² ORM maps\", \"1024² base-colour and Paint normal; shared 768² metal normals; 512² ORM\")
s=s.replace(\"Poly Haven CC0 IDs: metal_plate, rusty_metal_02;\", \"Poly Haven CC0 IDs: metal_plate, metal_plate_02, rusty_metal_02;\")
s=s.replace(\"https://polyhaven.com/a/metal_plate ;\", \"https://polyhaven.com/a/metal_plate ; https://polyhaven.com/a/metal_plate_02 ;\")
marker=\"# LONG RECESSED LATERAL ORGANS\"
extra=\"\"\"# Wide wrapping shoulder reinforcements break the long axial seams into organic S curves.
for side in [-1,1]:
    for yy in [-78,-3,72]:
        plate(h,yy-10,yy+3,side*.40,side*1.94,3.5,0,-17)
# Secondary flush access outlines and polished damaged edges at human scale.
for side in [-1,1]:
    for j,yy in enumerate([-177,-143,-111,-84,-49,-15,20,50,91,123,151]):
        for tt in [.35,.91,2.26]:
            theta=side*tt;length=7.0+(j%3)*2.5;dt=.09
            coords=[(yy-length,theta-dt),(yy+length,theta-dt),(yy+length+1,theta-dt*.5),(yy+length+1,theta+dt*.55),(yy+length,theta+dt),(yy-length,theta+dt),(yy-length-1,theta+dt*.5),(yy-length-1,theta-dt*.5)]
            pts=[surface(y,t,3.0) for y,t in coords];tube(h,pts+[pts[0]],.085,3,5)
            # Short chipped/worn segments on the aft edge rather than a uniform silver border.
            for q in range(3):
                t=theta-dt*.7+q*dt*.55;pp=[surface(yy+length+.7,t+k*.012,3.06) for k in range(3)];tube(h,pp,.08,1,5)

\"\"\"
s=s.replace(marker,extra+marker)
open(p,'w').write(s)
PY
python3 -m py_compile build_alien-harvester.py
scp build_alien-harvester.py gex44:/root/fal-author/alien-harvester-v1/ && ssh gex44 '/root/blender-spike/blender-5.2.0-linux-x64/blender -b --python-exit-code 1 --python /root/fal-author/alien-harvester-v1/build_alien-harvester.py > /root/fal-author/alien-harvester-v1/build.log 2>&1'" in /home/claude-agent/forge-build/forge-assets/jobs/alien-harvester-v1
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/bin/bash -lc "tail -30 /tmp/alien-harvester-review/review.txt && ssh gex44 'tail -8 /root/fal-author/alien-harvester-v1/build.log'" in /home/claude-agent/forge-build/forge-assets/jobs/alien-harvester-v1
 succeeded in 479ms:
**Verdict: REVISE**

All four images ([sheet.jpg](file:///home/claude-agent/forge-build/forge-assets/jobs/alien-harvester-v1/sheet.jpg), [final.png](file:///home/claude-agent/forge-build/forge-assets/jobs/alien-harvester-v1/final.png), [close.png](file:///home/claude-agent/forge-build/forge-assets/jobs/alien-harvester-v1/close.png), [side.png](file:///home/claude-agent/forge-build/forge-assets/jobs/alien-harvester-v1/side.png)) were inspected directly. Six arms (three pairs) and zero windows are confirmed, and the author's planned fixes for the light/clean hull and straight arms are noted.

### Top 5 Visual Findings (Ordered by Impact)

| # | Area | Visual Finding | Measurable Acceptance Criteria |
| :--- | :--- | :--- | :--- |
| **1** | **Silhouette & Hull Profile** | In [side.png](file:///home/claude-agent/forge-build/forge-assets/jobs/alien-harvester-v1/side.png), the hull is a straight, uniform cylinder of constant thickness from nose to tail. [sheet.jpg](file:///home/claude-agent/forge-build/forge-assets/jobs/alien-harvester-v1/sheet.jpg) shows a hunched leviathan profile: a raised mid-body dorsal arch (120m height, 160m width), a narrowed neck behind the maw, a ribbed belly, and a tapered tail fin assembly. | Mid-body height in [side.png](file:///home/claude-agent/forge-build/forge-assets/jobs/alien-harvester-v1/side.png) must be at least 25-30% taller than the nose and tail sections, with a visible dorsal hump under the spines and 6-8 segmented ventral belly ribs forward of the arms. |
| **2** | **Panel Construction & Greebles** | In [close.png](file:///home/claude-agent/forge-build/forge-assets/jobs/alien-harvester-v1/close.png), armor plates are thin floating shells over wide black gaps, with tacked-on smooth cylindrical cheek tubes and blocky tan rectangular pads that clip into the seams. Reference plates are thick, overlapping carapace segments with beveled edges and recessed panel lines. | Remove the floating tan latch blocks and smooth side tubes. Replace with interlocking, beveled armor plates (visible thickness >= 0.8m at 420m scale) that overlap forward-to-aft with recessed mechanical seam channels and micro-fasteners. |
| **3** | **Glowing Maw & Side Vents** | In [close.png](file:///home/claude-agent/forge-build/forge-assets/jobs/alien-harvester-v1/close.png) and [final.png](file:///home/claude-agent/forge-build/forge-assets/jobs/alien-harvester-v1/final.png), the maw is a flat, flush-cut ring with thin peach fins and no glow, and the side amber vents have thin vertical bars like a cage. In [sheet.jpg](file:///home/claude-agent/forge-build/forge-assets/jobs/alien-harvester-v1/sheet.jpg), the maw sits inside a hooded upper brow and heavy side mandibles with thick dark teeth over an intense amber core, and side vents have thick angled louvers. | Recess the maw ring beneath an overhanging dorsal brow and side cheek cowlings; make inner teeth dark metallic with a bright orange-amber emissive core and visible bloom. Replace thin vertical vent bars with 4-5 thick, angled armor louvers per vent and add the missing aft lower thruster glow shown in [sheet.jpg](file:///home/claude-agent/forge-build/forge-assets/jobs/alien-harvester-v1/sheet.jpg). |
| **4** | **Material Realism & Dorsal Spines** | Beyond the light grey hull the author already plans to darken, [close.png](file:///home/claude-agent/forge-build/forge-assets/jobs/alien-harvester-v1/close.png) shows a uniform stucco/leather noise across all plates, and the dorsal spines in [final.png](file:///home/claude-agent/forge-build/forge-assets/jobs/alien-harvester-v1/final.png) are bright bone-tan horns sitting on flat metal. Reference uses dark charcoal armor, metallic edge wear, heat-scorched metal around vents, and dark gunmetal/chitin spines blending into dorsal ridges. | Darken base hull albedo to charcoal (sRGB value 0.12-0.22), replace uniform stucco bump with directional metal wear, soot/heat scoring around vents, and bare-metal edge highlights. Recolor dorsal spines to dark scorched gunmetal/chitin with integrated armored sockets. |
| **5** | **Arm Sockets, Poses & Claws** | Beyond fixing the straight posture, all six arms in [side.png](file:///home/claude-agent/forge-build/forge-assets/jobs/alien-harvester-v1/side.png) are identical clones at the exact same angle, plugged into plain black balls on a flat belly, ending in tiny tan pincers. Reference shows recessed armored shoulder sockets, varied S-curves per pair, and heavy dark 3-prong mechanical claws. | Give each of the three arm pairs a distinct S-curve pose (at least 10-20 degrees variation between pairs), replace the plain sphere joints with recessed armored socket rings integrated into the ventral ribs, and enlarge the terminal 3-prong claws to dark, heavy articulated pincers. |

***

0. **Blocked on you**: nothing.
1. **What you changed**: nothing (read-only visual critique as requested).
2. **How you know it works**: opened and inspected [sheet.jpg](file:///home/claude-agent/forge-build/forge-assets/jobs/alien-harvester-v1/sheet.jpg), [final.png](file:///home/claude-agent/forge-build/forge-assets/jobs/alien-harvester-v1/final.png), [close.png](file:///home/claude-agent/forge-build/forge-assets/jobs/alien-harvester-v1/close.png), and [side.png](file:///home/claude-agent/forge-build/forge-assets/jobs/alien-harvester-v1/side.png) directly with the image viewer tool.
3. **What would break if you were wrong**: if the model ships without addressing these five areas, it will read as a smooth grey tube with pasted-on parts rather than the heavy, dark, tapered 420m biomechanical harvester in the reference.
4. **What you did NOT do**: did not inspect the Blender scene, geometry counts, or UV/shader nodes, and did not edit any files.

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/bin/bash -lc "ssh gex44 'tail -12 /root/fal-author/alien-harvester-v1/build.log' && node - <<'JS'
const fs=require('fs'),v=require('/tmp/alien-harvester-check/node_modules/gltf-validator');v.validateBytes(new Uint8Array(fs.readFileSync('alien-harvester.glb')),{uri:'alien-harvester.glb'}).then(r=>{fs.writeFileSync('/tmp/alien-harvester-check/validator-v1.json',JSON.stringify(r,null,2));console.log(JSON.stringify(r.issues,null,2));});
JS" in /home/claude-agent/forge-build/forge-assets/jobs/alien-harvester-v1
 succeeded in 1564ms:
{
  "numErrors": 0,
  "numWarnings": 28,
  "numInfos": 9,
  "numHints": 0,
  "messages": [
    {
      "code": "MESH_PRIMITIVE_GENERATED_TANGENT_SPACE",
      "message": "Material requires a tangent space but the mesh primitive does not provide it. Runtime-generated tangent space may be non-portable across implementations.",
      "severity": 1,
      "pointer": "/meshes/0/primitives/0/material"
    },
    {
      "code": "MESH_PRIMITIVE_GENERATED_TANGENT_SPACE",
      "message": "Material requires a tangent space but the mesh primitive does not provide it. Runtime-generated tangent space may be non-portable across implementations.",
      "severity": 1,
      "pointer": "/meshes/0/primitives/1/material"
    },
    {
      "code": "MESH_PRIMITIVE_GENERATED_TANGENT_SPACE",
      "message": "Material requires a tangent space but the mesh primitive does not provide it. Runtime-generated tangent space may be non-portable across implementations.",
      "severity": 1,
      "pointer": "/meshes/0/primitives/2/material"
    },
    {
      "code": "MESH_PRIMITIVE_GENERATED_TANGENT_SPACE",
      "message": "Material requires a tangent space but the mesh primitive does not provide it. Runtime-generated tangent space may be non-portable across implementations.",
      "severity": 1,
      "pointer": "/meshes/0/primitives/3/material"
    },
    {
      "code": "MESH_PRIMITIVE_GENERATED_TANGENT_SPACE",
      "message": "Material requires a tangent space but the mesh primitive does not provide it. Runtime-generated tangent space may be non-portable across implementations.",
      "severity": 1,
      "pointer": "/meshes/1/primitives/0/material"
    },
    {
      "code": "MESH_PRIMITIVE_GENERATED_TANGENT_SPACE",
      "message": "Material requires a tangent space but the mesh primitive does not provide it. Runtime-generated tangent space may be non-portable across implementations.",
      "severity": 1,
      "pointer": "/meshes/1/primitives/1/material"
    },
    {
      "code": "MESH_PRIMITIVE_GENERATED_TANGENT_SPACE",
      "message": "Material requires a tangent space but the mesh primitive does not provide it. Runtime-generated tangent space may be non-portable across implementations.",
      "severity": 1,
      "pointer": "/meshes/1/primitives/2/material"
    },
    {
      "code": "MESH_PRIMITIVE_GENERATED_TANGENT_SPACE",
      "message": "Material requires a tangent space but the mesh primitive does not provide it. Runtime-generated tangent space may be non-portable across implementations.",
      "severity": 1,
      "pointer": "/meshes/1/primitives/3/material"
    },
    {
      "code": "MESH_PRIMITIVE_GENERATED_TANGENT_SPACE",
      "message": "Material requires a tangent space but the mesh primitive does not provide it. Runtime-generated tangent space may be non-portable across implementations.",
      "severity": 1,
      "pointer": "/meshes/2/primitives/0/material"
    },
    {
      "code": "MESH_PRIMITIVE_GENERATED_TANGENT_SPACE",
      "message": "Material requires a tangent space but the mesh primitive does not provide it. Runtime-generated tangent space may be non-portable across implementations.",
      "severity": 1,
      "pointer": "/meshes/2/primitives/1/material"
    },
    {
      "code": "MESH_PRIMITIVE_GENERATED_TANGENT_SPACE",
      "message": "Material requires a tangent space but the mesh primitive does not provide it. Runtime-generated tangent space may be non-portable across implementations.",
      "severity": 1,
      "pointer": "/meshes/2/primitives/2/material"
    },
    {
      "code": "MESH_PRIMITIVE_GENERATED_TANGENT_SPACE",
      "message": "Material requires a tangent space but the mesh primitive does not provide it. Runtime-generated tangent space may be non-portable across implementations.",
      "severity": 1,
      "pointer": "/meshes/2/primitives/3/material"
    },
    {
      "code": "MESH_PRIMITIVE_GENERATED_TANGENT_SPACE",
      "message": "Material requires a tangent space but the mesh primitive does not provide it. Runtime-generated tangent space may be non-portable across implementations.",
      "severity": 1,
      "pointer": "/meshes/3/primitives/0/material"
    },
    {
      "code": "MESH_PRIMITIVE_GENERATED_TANGENT_SPACE",
      "message": "Material requires a tangent space but the mesh primitive does not provide it. Runtime-generated tangent space may be non-portable across implementations.",
      "severity": 1,
      "pointer": "/meshes/3/primitives/1/material"
    },
    {
      "code": "MESH_PRIMITIVE_GENERATED_TANGENT_SPACE",
      "message": "Material requires a tangent space but the mesh primitive does not provide it. Runtime-generated tangent space may be non-portable across implementations.",
      "severity": 1,
      "pointer": "/meshes/3/primitives/2/material"
    },
    {
      "code": "MESH_PRIMITIVE_GENERATED_TANGENT_SPACE",
      "message": "Material requires a tangent space but the mesh primitive does not provide it. Runtime-generated tangent space may be non-portable across implementations.",
      "severity": 1,
      "pointer": "/meshes/3/primitives/3/material"
    },
    {
      "code": "MESH_PRIMITIVE_GENERATED_TANGENT_SPACE",
      "message": "Material requires a tangent space but the mesh primitive does not provide it. Runtime-generated tangent space may be non-portable across implementations.",
      "severity": 1,
      "pointer": "/meshes/4/primitives/0/material"
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    {
      "code": "MESH_PRIMITIVE_GENERATED_TANGENT_SPACE",
      "message": "Material requires a tangent space but the mesh primitive does not provide it. Runtime-generated tangent space may be non-portable across implementations.",
      "severity": 1,
      "pointer": "/meshes/4/primitives/1/material"
    },
    {
      "code": "MESH_PRIMITIVE_GENERATED_TANGENT_SPACE",
      "message": "Material requires a tangent space but the mesh primitive does not provide it. Runtime-generated tangent space may be non-portable across implementations.",
      "severity": 1,
      "pointer": "/meshes/4/primitives/2/material"
    },
    {
      "code": "MESH_PRIMITIVE_GENERATED_TANGENT_SPACE",
      "message": "Material requires a tangent space but the mesh primitive does not provide it. Runtime-generated tangent space may be non-portable across implementations.",
      "severity": 1,
      "pointer": "/meshes/4/primitives/3/material"
    },
    {
      "code": "MESH_PRIMITIVE_GENERATED_TANGENT_SPACE",
      "message": "Material requires a tangent space but the mesh primitive does not provide it. Runtime-generated tangent space may be non-portable across implementations.",
      "severity": 1,
      "pointer": "/meshes/5/primitives/0/material"
    },
    {
      "code": "MESH_PRIMITIVE_GENERATED_TANGENT_SPACE",
      "message": "Material requires a tangent space but the mesh primitive does not provide it. Runtime-generated tangent space may be non-portable across implementations.",
      "severity": 1,
      "pointer": "/meshes/5/primitives/1/material"
    },
    {
      "code": "MESH_PRIMITIVE_GENERATED_TANGENT_SPACE",
      "message": "Material requires a tangent space but the mesh primitive does not provide it. Runtime-generated tangent space may be non-portable across implementations.",
      "severity": 1,
      "pointer": "/meshes/5/primitives/2/material"
    },
    {
      "code": "MESH_PRIMITIVE_GENERATED_TANGENT_SPACE",
      "message": "Material requires a tangent space but the mesh primitive does not provide it. Runtime-generated tangent space may be non-portable across implementations.",
      "severity": 1,
      "pointer": "/meshes/5/primitives/3/material"
    },
    {
      "code": "MESH_PRIMITIVE_GENERATED_TANGENT_SPACE",
      "message": "Material requires a tangent space but the mesh primitive does not provide it. Runtime-generated tangent space may be non-portable across implementations.",
      "severity": 1,
      "pointer": "/meshes/6/primitives/0/material"
    },
    {
      "code": "MESH_PRIMITIVE_GENERATED_TANGENT_SPACE",
      "message": "Material requires a tangent space but the mesh primitive does not provide it. Runtime-generated tangent space may be non-portable across implementations.",
      "severity": 1,
      "pointer": "/meshes/6/primitives/1/material"
    },
    {
      "code": "MESH_PRIMITIVE_GENERATED_TANGENT_SPACE",
      "message": "Material requires a tangent space but the mesh primitive does not provide it. Runtime-generated tangent space may be non-portable across implementations.",
      "severity": 1,
      "pointer": "/meshes/6/primitives/2/material"
    },
    {
      "code": "MESH_PRIMITIVE_GENERATED_TANGENT_SPACE",
      "message": "Material requires a tangent space but the mesh primitive does not provide it. Runtime-generated tangent space may be non-portable across implementations.",
      "severity": 1,
      "pointer": "/meshes/6/primitives/3/material"
    },
    {
      "code": "UNUSED_OBJECT",
      "message": "This object may be unused.",
      "severity": 2,
      "pointer": "/meshes/6/primitives/4/attributes/TEXCOORD_0"
    },
    {
      "code": "UNUSED_OBJECT",
      "message": "This object may be unused.",
      "severity": 2,
      "pointer": "/meshes/6/primitives/5/attributes/TEXCOORD_0"
    },
    {
      "code": "NODE_EMPTY",
      "message": "Empty node encountered.",
      "severity": 2,
      "pointer": "/nodes/6"
    },
    {
      "code": "NODE_EMPTY",
      "message": "Empty node encountered.",
      "severity": 2,
      "pointer": "/nodes/7"
    },
    {
      "code": "NODE_EMPTY",
      "message": "Empty node encountered.",
      "severity": 2,
      "pointer": "/nodes/8"
    },
    {
      "code": "NODE_EMPTY",
      "message": "Empty node encountered.",
      "severity": 2,
      "pointer": "/nodes/9"
    },
    {
      "code": "NODE_EMPTY",
      "message": "Empty node encountered.",
      "severity": 2,
      "pointer": "/nodes/10"
    },
    {
      "code": "NODE_EMPTY",
      "message": "Empty node encountered.",
      "severity": 2,
      "pointer": "/nodes/11"
    },
    {
      "code": "NODE_EMPTY",
      "message": "Empty node encountered.",
      "severity": 2,
      "pointer": "/nodes/12"
    }
  ],
  "truncated": false
}

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/bin/bash -lc 'ssh gex44 tail -n 20 /root/fal-author/alien-harvester-v1/build.log' in /home/claude-agent/forge-build/forge-assets/jobs/alien-harvester-v1
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HARVESTER 47.0 Render close.png
00:53.179  render           | Saved: '/root/fal-author/alien-harvester-v1/close.png'
HARVESTER 52.7 Render arms-test.png
00:58.760  render           | Saved: '/root/fal-author/alien-harvester-v1/arms-test.png'
HARVESTER 58.3 Render paint-0.png
01:01.125  render           | Saved: '/root/fal-author/alien-harvester-v1/paint-0.png'
HARVESTER 60.7 Render paint-1.png
01:03.707  render           | Saved: '/root/fal-author/alien-harvester-v1/paint-1.png'
HARVESTER 63.3 Render paint-2.png
01:06.316  render           | Saved: '/root/fal-author/alien-harvester-v1/paint-2.png'
HARVESTER 65.9 Render paint-3.png
01:08.756  render           | Saved: '/root/fal-author/alien-harvester-v1/paint-3.png'
HARVESTER 68.4 Render paint-4.png
01:11.085  render           | Saved: '/root/fal-author/alien-harvester-v1/paint-4.png'
HARVESTER 70.7 Render paint-5.png
01:13.421  render           | Saved: '/root/fal-author/alien-harvester-v1/paint-5.png'
Info: Saved as "harvester-source.blend"
HARVESTER 73.2 COMPLETE

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/bin/bash -lc 'scp gex44:/root/fal-author/alien-harvester-v1/{final.png,side.png,close.png,clay.png,arms-test.png,paints.png,nodes.json,NOTES.md,alien-harvester.glb} .' in /home/claude-agent/forge-build/forge-assets/jobs/alien-harvester-v1
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/bin/bash -lc "sed -n '1,120p' build_alien-harvester.py" in /home/claude-agent/forge-build/forge-assets/jobs/alien-harvester-v1
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"""Alien harvester: deterministic clean-scene build, Cycles tile bakes, GLB and proof renders.
Run: blender -b --python-exit-code 1 --python build_alien-harvester.py
Optional -- --probe performs a tiny GPU bake/export/reimport before the full job.
Only downloaded inputs are CC0 Poly Haven jpgs. All other detail is geometry/nodes.
"""
import bpy, math, json, os, sys, struct, urllib.request, random, time
from pathlib import Path
from mathutils import Vector, Matrix
import bmesh
import numpy as np

ROOT=Path(__file__).resolve().parent
CACHE=ROOT/'textures'; CACHE.mkdir(exist_ok=True)
OUT=ROOT
random.seed(119)
T0=time.time()
PAINTS=[('Obsidian carapace',[.10,.11,.10]),('Deep violet',[.115,.055,.18]),('Bone white',[.68,.64,.52]),('Abyssal teal',[.025,.18,.175]),('Oxblood',[.22,.028,.035]),('Jade',[.08,.29,.16])]
PH_IDS=['metal_plate','metal_plate_02','rusty_metal_02']
# Revision budget: 3. Hero: front-port elevated, side ortho, clay, close and rear.
# Geometry 80k..200k triangles; <=9 mats; GLB <=12MB; colour/normal <=1024; ORM <=512.

def log(s): print('HARVESTER',round(time.time()-T0,1),s,flush=True)
def select(o):
    bpy.ops.object.select_all(action='DESELECT'); o.select_set(True); bpy.context.view_layer.objects.active=o

def init():
    bpy.ops.object.select_all(action='SELECT'); bpy.ops.object.delete(use_global=False)
    for d in list(bpy.data.materials): bpy.data.materials.remove(d)
    sc=bpy.context.scene; sc.render.engine='CYCLES'; sc.cycles.samples=24
    pref=bpy.context.preferences.addons['cycles'].preferences
    try: pref.compute_device_type='OPTIX'
    except: pref.compute_device_type='CUDA'
    pref.get_devices()
    gpu=[]
    for d in pref.devices:
        d.use=d.type!='CPU'
        if d.use: gpu.append(d.name)
    assert gpu,'GPU required'
    sc.cycles.device='GPU'; sc.cycles.use_denoising=True
    sc.cycles.max_bounces=5; sc.cycles.diffuse_bounces=2; sc.cycles.glossy_bounces=3
    sc.render.image_settings.file_format='PNG'; sc.render.image_settings.color_mode='RGBA'
    sc.render.film_transparent=False
    sc.unit_settings.system='METRIC'; sc.unit_settings.scale_length=1
    sc.view_settings.view_transform='AgX'
    sc.render.resolution_percentage=100
    log('GPU '+str(gpu))
    return sc

sc=init()

def fetch(id,map):
    p=CACHE/f'{id}_{map}_1k.jpg'
    if not p.exists():
        url=f'https://dl.polyhaven.org/file/ph-assets/Textures/jpg/1k/{id}/{id}_{map}_1k.jpg'
        req=urllib.request.Request(url,headers={'User-Agent':'Mozilla/5.0 (Forge asset authoring)'})
        with urllib.request.urlopen(req,timeout=90) as r: p.write_bytes(r.read())
    img=bpy.data.images.load(str(p),check_existing=True)
    if map!='diff': img.colorspace_settings.name='Non-Color'
    return img

def node(nt,kind):return nt.nodes.new(kind)
def mathnode(nt,op,a,b):
    n=node(nt,'ShaderNodeMath');n.operation=op
    for i,v in enumerate((a,b)):
        if isinstance(v,(float,int)): n.inputs[i].default_value=v
        else:nt.links.new(v,n.inputs[i])
    return n.outputs[0]
def color_mix(nt,a,b,fac,mode='MIX'):
    n=node(nt,'ShaderNodeMixRGB');n.blend_type=mode
    for i,v in enumerate((fac,a,b)):
        if isinstance(v,(float,int)):n.inputs[i].default_value=v
        elif isinstance(v,(tuple,list)):n.inputs[i].default_value=v
        else:nt.links.new(v,n.inputs[i])
    return n.outputs[0]

def bake_material(name,kind,ph):
    """Bake a periodic 8m stock surface, then use it at world scale on every part."""
    log('Bake '+name)
    mat=bpy.data.materials.new(name); mat.use_nodes=True
    nt=mat.node_tree;nt.nodes.clear();lk=nt.links
    out=node(nt,'ShaderNodeOutputMaterial');p=node(nt,'ShaderNodeBsdfPrincipled');lk.new(p.outputs[0],out.inputs['Surface'])
    uv=node(nt,'ShaderNodeTexCoord')
    images={}
    for k in ['diff','nor_gl','arm']:
        t=node(nt,'ShaderNodeTexImage');t.image=fetch(ph,k);t.extension='REPEAT';lk.new(uv.outputs['UV'],t.inputs['Vector']);images[k]=t
    bw=node(nt,'ShaderNodeRGBToBW');lk.new(images['diff'].outputs['Color'],bw.inputs[0])
    noise=node(nt,'ShaderNodeTexNoise');noise.inputs['Scale'].default_value=92;noise.inputs['Detail'].default_value=3
    lk.new(uv.outputs['UV'],noise.inputs['Vector'])
    # Fine pitting and irregular mill finish remain neutral under faction multiplication.
    if kind=='paint':
        lum=mathnode(nt,'MINIMUM',mathnode(nt,'ADD',mathnode(nt,'MULTIPLY',bw.outputs[0],3.7),.36),.96)
        macro=node(nt,'ShaderNodeTexNoise');macro.inputs['Scale'].default_value=3.5;macro.inputs['Detail'].default_value=5;lk.new(uv.outputs['UV'],macro.inputs['Vector'])
        grime=mathnode(nt,'ADD',mathnode(nt,'MULTIPLY',macro.outputs['Fac'],.38),.62)
        base=color_mix(nt,lum,grime,1,'MULTIPLY');rough=.30;metal=.64
    elif kind=='metal':
        base=color_mix(nt,images['diff'].outputs[0],(.12,.15,.19,1),.80);rough=.31;metal=.9
    elif kind=='scorch':
        base=color_mix(nt,images['diff'].outputs[0],(.035,.024,.018,1),.93);rough=.43;metal=.76
    else:
        base=color_mix(nt,images['diff'].outputs[0],(.018,.023,.026,1),.94);rough=.64;metal=.38
    sep=node(nt,'ShaderNodeSeparateColor');lk.new(images['arm'].outputs[0],sep.inputs['Color'])
    r=mathnode(nt,'ADD',mathnode(nt,'MULTIPLY',sep.outputs['Green'],.23),rough)
    ao=mathnode(nt,'ADD',mathnode(nt,'MULTIPLY',sep.outputs['Red'],.22),.78)
    normal=node(nt,'ShaderNodeNormalMap');normal.inputs['Strength'].default_value=.45
    lk.new(images['nor_gl'].outputs[0],normal.inputs['Color'])
    bump=node(nt,'ShaderNodeBump');bump.inputs['Strength'].default_value=.17;bump.inputs['Distance'].default_value=.018
    lk.new(noise.outputs['Fac'],bump.inputs['Height']);lk.new(normal.outputs[0],bump.inputs['Normal']);lk.new(bump.outputs[0],p.inputs['Normal'])
    lk.new(base,p.inputs['Base Color']);lk.new(r,p.inputs['Roughness']);p.inputs['Metallic'].default_value=metal
    bpy.ops.mesh.primitive_plane_add(size=8);plane=bpy.context.object;plane.name='Bake_stock';plane.data.materials.append(mat)
    target=node(nt,'ShaderNodeTexImage');nt.nodes.active=target
    emit=node(nt,'ShaderNodeEmission')
    baked={}
    for typ,res in [('Base',1024),('Normal',1024 if kind=='paint' else 768),('ORM',512)]:
        img=bpy.data.images.new(name+'_'+typ,width=res,height=res,alpha=False)
        if typ!='Base':img.colorspace_settings.name='Non-Color'
        target.image=img;nt.nodes.active=target
        sc.render.bake.margin=8;sc.cycles.samples=16
        if typ=='Normal':
            lk.new(p.outputs[0],out.inputs['Surface']);bpy.ops.object.bake(type='NORMAL')
        else:

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codex
The second build has darker metal, stronger armour overlaps, and curved harvesting arms. I’m now refining the maw cowling, belly plates, and exposed engine chambers, then checking the exported model’s textures and moving pivots.

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/bin/bash -lc "sed -n '120,660p' build_alien-harvester.py" in /home/claude-agent/forge-build/forge-assets/jobs/alien-harvester-v1
 succeeded in 0ms:
        else:
            if typ=='Base':lk.new(base,emit.inputs['Color'])
            else:
                comb=node(nt,'ShaderNodeCombineColor');lk.new(ao,comb.inputs['Red']);lk.new(r,comb.inputs['Green']);comb.inputs['Blue'].default_value=metal;lk.new(comb.outputs[0],emit.inputs['Color'])
            lk.new(emit.outputs[0],out.inputs['Surface']);bpy.ops.object.bake(type='EMIT')
        img.filepath_raw=str(CACHE/(name+'_'+typ+('.jpg' if typ=='Base' else '.png')));img.file_format='JPEG' if typ=='Base' else 'PNG';sc.render.image_settings.quality=90;img.save();baked[typ]=img
    bpy.data.objects.remove(plane,do_unlink=True)
    nt.nodes.clear();out=node(nt,'ShaderNodeOutputMaterial');p=node(nt,'ShaderNodeBsdfPrincipled');lk.new(p.outputs[0],out.inputs['Surface'])
    for typ in ['Base','Normal','ORM']:
        t=node(nt,'ShaderNodeTexImage');t.image=baked[typ];t.name=typ;t.label='Cycles baked 8m tiling stock'
        if typ=='Base':lk.new(t.outputs[0],p.inputs['Base Color'])
        elif typ=='Normal':
            n=node(nt,'ShaderNodeNormalMap');lk.new(t.outputs[0],n.inputs['Color']);lk.new(n.outputs[0],p.inputs['Normal'])
        else:
            s=node(nt,'ShaderNodeSeparateColor');lk.new(t.outputs[0],s.inputs[0]);lk.new(s.outputs['Green'],p.inputs['Roughness']);lk.new(s.outputs['Blue'],p.inputs['Metallic'])
            # Official glTF occlusion hook.
            if 'glTF Material Output' not in bpy.data.node_groups:
                ng=bpy.data.node_groups.new('glTF Material Output','ShaderNodeTree');ng.interface.new_socket(name='Occlusion',in_out='INPUT',socket_type='NodeSocketFloat')
            g=node(nt,'ShaderNodeGroup');g.node_tree=bpy.data.node_groups['glTF Material Output'];lk.new(s.outputs['Red'],g.inputs['Occlusion'])
    return mat

if '--probe' in sys.argv:
    m=bake_material('Probe','paint','metal_plate')
    bpy.ops.mesh.primitive_uv_sphere_add(segments=16,ring_count=8)
    o=bpy.context.object;o.data.materials.append(m)
    bpy.ops.export_scene.gltf(filepath=str(OUT/'probe.glb'),export_format='GLB',use_selection=True)
    bpy.ops.object.delete()
    for mat in list(bpy.data.materials): bpy.data.materials.remove(mat)
    for group in list(bpy.data.node_groups): bpy.data.node_groups.remove(group)
    bpy.ops.import_scene.gltf(filepath=str(OUT/'probe.glb'))
    assert len([x for x in sc.objects if x.type=='MESH'])==1
    bpy.ops.object.camera_add(location=(3,-4,2));cam=bpy.context.object;cam.rotation_euler=(-cam.location).to_track_quat('-Z','Y').to_euler();sc.camera=cam
    bpy.ops.object.light_add(type='AREA',location=(2,-3,4));bpy.context.object.data.energy=500;bpy.context.object.data.size=4
    sc.render.resolution_x=256;sc.render.resolution_y=256;sc.render.filepath=str(OUT/'probe.png');bpy.ops.render.render(write_still=True)
    log('PROBE_OK');sys.exit(0)

MATS=[bake_material('Paint','paint','metal_plate_02'),bake_material('Titanium','metal','metal_plate'),bake_material('HeatScorched','scorch','rusty_metal_02'),bake_material('Recess','recess','metal_plate')]
# Identical metal stock normal bakes share one image in the delivered GLB.
MATS[3].node_tree.nodes['Normal'].image=MATS[1].node_tree.nodes['Normal'].image

for name,col,strength in [('Lamps',(1,.235,.018,1),2.0),('Engines',(1,.32,.035,1),2.1)]:
    m=bpy.data.materials.new(name);m.use_nodes=True;p=m.node_tree.nodes.get('Principled BSDF');p.inputs['Base Color'].default_value=col;p.inputs['Roughness'].default_value=.34;p.inputs['Metallic'].default_value=.3;p.inputs['Emission Color'].default_value=col;p.inputs['Emission Strength'].default_value=strength;MATS.append(m)

class Geo:
    def __init__(self,name,pivot=(0,0,0)):self.name=name;self.v=[];self.f=[];self.mi=[];self.pivot=Vector(pivot)
    def add(self,vs,fs,mat=0):
        n=len(self.v);self.v.extend([tuple(v) for v in vs]);self.f.extend([tuple(n+i for i in f) for f in fs]);self.mi.extend([mat]*len(fs))
    def object(self):
        me=bpy.data.meshes.new(self.name);me.from_pydata(self.v,[],self.f);me.update()
        # Recalculate closed shell normals; all surfaces use welded edge topology.
        bm=bmesh.new();bm.from_mesh(me);bmesh.ops.recalc_face_normals(bm,faces=bm.faces)
        # Remove any accidental zero-area faces before serialization.
        bad=[f for f in bm.faces if f.calc_area()<1e-9]
        if bad:bmesh.ops.delete(bm,geom=bad,context='FACES')
        bm.to_mesh(me);bm.free()
        for m in MATS:me.materials.append(m)
        for f,idx in zip(me.polygons,self.mi):f.material_index=idx;f.use_smooth=True
        uv=me.uv_layers.new(name='UVMap')
        # World scale projection: repeated baked material every 8m, no 420m atlas.
        for f in me.polygons:
            n=f.normal;ax=max(range(3),key=lambda k:abs(n[k]));axes=[k for k in range(3) if k!=ax]
            for li in f.loop_indices:
                p=me.vertices[me.loops[li].vertex_index].co
                uv.data[li].uv=(p[axes[0]]/8,p[axes[1]]/8)
        # Angle-split only hard creases, smooth the swept surfaces.
        bm=bmesh.new();bm.from_mesh(me)
        for e in bm.edges:
            if len(e.link_faces)==2 and e.calc_face_angle(0)>math.radians(48):e.smooth=False
        bm.to_mesh(me);bm.free();me.update()
        ob=bpy.data.objects.new(self.name,me);sc.collection.objects.link(ob)
        for v in me.vertices:v.co-=self.pivot
        ob.location=self.pivot
        return ob

h=Geo('Hull')

def tube(g,points,radii,mat=1,sides=12,cap=True,ellipse=1):
    pts=[Vector(p) for p in points];vs=[]
    for j,p in enumerate(pts):
        t=(pts[min(j+1,len(pts)-1)]-pts[max(j-1,0)]).normalized()
        ref=Vector((0,0,1)) if abs(t.z)<.9 else Vector((1,0,0))
        a=t.cross(ref).normalized();b=t.cross(a).normalized();r=radii[j] if hasattr(radii,'__len__') else radii
        for i in range(sides):
            ang=2*math.pi*i/sides;vs.append(p+a*(r*math.cos(ang))+b*(r*ellipse*math.sin(ang)))
    fs=[]
    for j in range(len(pts)-1):
        for i in range(sides):a=j*sides+i;b=j*sides+(i+1)%sides;fs.append((a,b,b+sides,a+sides))
    if cap:fs.extend([tuple(reversed(range(sides))),tuple((len(pts)-1)*sides+i for i in range(sides))])
    g.add(vs,fs,mat)

def ellipsoid(g,c,scale,mat=0,seg=20,rings=10):
    c=Vector(c);vs=[c+Vector((0,0,scale[2]))]
    for j in range(1,rings):
        a=math.pi*j/rings
        for i in range(seg):
            t=2*math.pi*i/seg;vs.append(c+Vector((scale[0]*math.sin(a)*math.cos(t),scale[1]*math.sin(a)*math.sin(t),scale[2]*math.cos(a))))
    vs.append(c-Vector((0,0,scale[2])));bot=len(vs)-1;fs=[]
    for i in range(seg):fs.append((0,1+i,1+(i+1)%seg))
    for j in range(rings-2):
        for i in range(seg):a=1+j*seg+i;b=1+j*seg+(i+1)%seg;fs.append((a,a+seg,b+seg,b))
    for i in range(seg):fs.append((bot,1+(rings-2)*seg+(i+1)%seg,1+(rings-2)*seg+i))
    g.add(vs,fs,mat)

def ring(g,c,axis,rad,minor,mat=1,n=64,k=8,ratio=1):
    c=Vector(c);ax=Vector(axis).normalized();a=ax.cross(Vector((0,0,1)) if abs(ax.z)<.9 else Vector((1,0,0))).normalized();b=ax.cross(a)
    vs=[]
    for i in range(n):
        t=2*math.pi*i/n;out=a*math.cos(t)+b*(math.sin(t)*ratio)
        norm=(a*math.cos(t)+b*math.sin(t)).normalized()
        for j in range(k):s=2*math.pi*j/k;vs.append(c+out*rad+norm*(minor*math.cos(s))+ax*(minor*math.sin(s)))
    fs=[]
    for i in range(n):
        for j in range(k):fs.append((i*k+j,((i+1)%n)*k+j,((i+1)%n)*k+(j+1)%k,i*k+(j+1)%k))
    g.add(vs,fs,mat)

def catmull(points,num):
    p=[Vector(points[0])]+[Vector(x) for x in points]+[Vector(points[-1])];res=[]
    for i in range(1,len(p)-2):
        for j in range(num):
            t=j/num;res.append(.5*((2*p[i])+(-p[i-1]+p[i+1])*t+(2*p[i-1]-5*p[i]+4*p[i+1]-p[i+2])*t*t+(-p[i-1]+3*p[i]-3*p[i+1]+p[i+2])*t*t*t))
    res.append(p[-2]);return res

def rounded_box(g,c,size,mat=1,bevel=.3,basis=None):
    # Six gridded faces projected onto a rounded cuboid, welded by coordinate.
    c=Vector(c);basis=basis or Matrix.Identity(3);half=Vector(size)/2;r=min(bevel,min(half)*.45)
    vals=[-1,-.72,.72,1];vs=[];fs=[];lookup={}
    for ax in range(3):
        other=[k for k in range(3) if k!=ax]
        for sign in [-1,1]:
            grid=[]
            for u in range(4):
                row=[]
                for v in range(4):
                    raw=Vector((0,0,0));raw[ax]=sign*half[ax]
                    for k,t in zip(other,(vals[u],vals[v])):raw[k]=t*half[k] if abs(t)==1 else math.copysign(half[k]-r,t)
                    inn=Vector([max(-half[k]+r,min(half[k]-r,raw[k])) for k in range(3)])
                    delta=raw-inn;pt=inn+(delta.normalized()*r if delta.length else delta);key=tuple(round(x,6) for x in pt)
                    if key not in lookup:lookup[key]=len(vs);vs.append(c+basis@pt)
                    row.append(lookup[key])
                grid.append(row)
            for u in range(3):
                for v in range(3):fs.append((grid[u][v],grid[u+1][v],grid[u+1][v+1],grid[u][v+1]))
    g.add(vs,fs,mat)

# Smooth non-capsular hull loft: blunt face, high shoulder, long torso, pinched tail.
profile=[(-200,31,25,0),(-188,37,28,1),(-158,43,31,2),(-112,51,33,3),(-55,55,32,3),(0,55,30,2),(55,51,28,2),(105,43,25,1),(150,32,20,0),(185,21,13,-1),(202,12,8,-1)]
def shape(y):
    for i in range(len(profile)-1):
        a,b=profile[i:i+2]
        if a[0]<=y<=b[0]:
            t=(y-a[0])/(b[0]-a[0]);t=t*t*(3-2*t);return tuple(a[k]*(1-t)+b[k]*t for k in range(1,4))
    return profile[0][1:] if y<profile[0][0] else profile[-1][1:]
def surface(y,t,offset=0):
    w,z,c=shape(y);return Vector(((w*1.05+offset)*math.sin(t),y,c+(z*1.30+offset)*math.cos(t)))
# Inner continuous skin: intentionally open nose, recessed rear closure.
vs=[];N=96;Y=[-199+i*397/62 for i in range(63)]
for y in Y:
    for i in range(N):vs.append(surface(y,2*math.pi*i/N,-.7))
fs=[]
for j in range(len(Y)-1):
    for i in range(N):a=j*N+i;b=j*N+(i+1)%N;fs.append((a,b,b+N,a+N))
fs.append(tuple((len(Y)-1)*N+i for i in range(N)));h.add(vs,fs,3)

def plate(g,ya,yb,ta,tb,offset=1.3,mat=0,sweep=0):
    # Curved, thick shell patch with rounded rim and subtly swept panel ends.
    nu=8;nv=10;vs=[]
    for layer in [0,1]:
        for j in range(nu+1):
            u=j/nu
            for i in range(nv+1):
                v=i/nv;t=ta+(tb-ta)*v+.042*math.sin(u*math.pi)*(1 if ta+tb>0 else -1)
                edge=min(u*nu,(1-u)*nu,v*nv,(1-v)*nv,1)
                y=ya+(yb-ya)*u+sweep*math.sin(v*math.pi)*(0.3+.7*u)
                bulge=1.0*math.sin(u*math.pi)*math.sin(v*math.pi)
                d=(offset+bulge+.6*edge) if layer==0 else offset-1.0
                vs.append(surface(y,t,d))
    fs=[];stride=nv+1;L=(nu+1)*stride
    for j in range(nu):
        for i in range(nv):
            a=j*stride+i;fs.append((a,a+1,a+1+stride,a+stride));fs.append((a+L,a+stride+L,a+stride+1+L,a+1+L))
    border=list(range(stride))+[j*stride+nv for j in range(1,nu+1)]+[nu*stride+i for i in range(nv-1,-1,-1)]+[j*stride for j in range(nu-1,0,-1)]
    for i,a in enumerate(border):b=border[(i+1)%len(border)];fs.append((a,a+L,b+L,b))
    g.add(vs,fs,mat)
    # Fine abrasion rail set into the exposed aft lip.
    p=[surface(yb+sweep*math.sin(i/nv*math.pi),ta+(tb-ta)*i/nv,offset+.13) for i in range(nv+1)]
    tube(g,p,.19,1,6)

segments=[(-197,-169),(-168,-126),(-125,-72),(-71,-26),(-25,17),(18,58),(59,98),(99,133),(134,166),(167,200)]
for j,(a,b) in enumerate(segments):
    # Continuous crown is broad, the lateral lanes step to an oblique shoulder.
    plate(h,a,b,-.63,.63,1.6,0,4 if j>1 else -2)
    for s in [-1,1]:
        for lane,(lo,hi) in enumerate([(.655,1.28),(1.31,1.91),(1.94,2.59)]):
            aa=max(-197,a+(6 if lane%2 else -3));bb=min(200,b+(6 if lane%2 else -3))
            plate(h,aa,bb,s*lo,s*hi,1.3,0,(-7 if lane==0 else 5))
        # Belly overlap plates, exposed between harvesting roots.
        plate(h,a,b,s*2.62,s*3.12,.8,0,-2)

# Wide wrapping shoulder reinforcements break the long axial seams into organic S curves.
for side in [-1,1]:
    for yy in [-78,-3,72]:
        plate(h,yy-10,yy+3,side*.40,side*1.94,3.5,0,-17)
# Secondary flush access outlines and polished damaged edges at human scale.
for side in [-1,1]:
    for j,yy in enumerate([-177,-143,-111,-84,-49,-15,20,50,91,123,151]):
        for tt in [.35,.91,2.26]:
            theta=side*tt;length=7.0+(j%3)*2.5;dt=.09
            coords=[(yy-length,theta-dt),(yy+length,theta-dt),(yy+length+1,theta-dt*.5),(yy+length+1,theta+dt*.55),(yy+length,theta+dt),(yy-length,theta+dt),(yy-length-1,theta+dt*.5),(yy-length-1,theta-dt*.5)]
            pts=[surface(y,t,3.0) for y,t in coords];tube(h,pts+[pts[0]],.085,3,5)
            # Short chipped/worn segments on the aft edge rather than a uniform silver border.
            for q in range(3):
                t=theta-dt*.7+q*dt*.55;pp=[surface(yy+length+.7,t+k*.012,3.06) for k in range(3)];tube(h,pp,.08,1,5)

# LONG RECESSED LATERAL ORGANS, rounded asymmetric outlines, two scales per side.
def vent_pod(sign,cy,cz,L,H):
    # Outline in length-height coordinates, rounded contour via Catmull Rom.
    raw=[(-L*.53,-H*.12),(-L*.41,H*.35),(-L*.10,H*.53),(L*.38,H*.38),(L*.52,H*.10),(L*.39,-H*.40),(-L*.17,-H*.48)]
    p2=catmull([(y,0,z) for y,z in raw+[raw[0],raw[1]]],4)[:-4]
    p2=p2[:-1] if (p2[0]-p2[-1]).length<.01 else p2
    cx=shape(cy)[0]*1.05-.5
    ringspec=[(.96,0), (1.08,2.3),(1.04,5.4),(.87,6.5),(.79,4.8),(.79,1.8)]
    vs=[];n=len(p2)
    for scale,depth in ringspec:
        for p in p2:vs.append((sign*(cx+depth),cy+p.x*scale,cz+p.z*scale))
    fs=[]
    for j in range(len(ringspec)-1):
        for i in range(n):a=j*n+i;b=j*n+(i+1)%n;fs.append((a,b,b+n,a+n))
    h.add(vs,fs,0)
    # Interior dark lens with actual depth behind the separate luminous slats.
    gvs=[(sign*(cx+2),cy+p.x*.79,cz+p.z*.79) for p in p2];h.add(gvs,[tuple(range(n))],3)
    # Rim binding/scorched seal follows opening.
    rp=[Vector((sign*(cx+6),cy+p.x*.85,cz+p.z*.85)) for p in p2];tube(h,rp+[rp[0]],.42,2,7)
    for k in range(11):
        t=(k+.5)/11;yy=cy-L*.37+t*L*.72
        hh=H*.26*math.sin(math.pi*t)**.45
        # Amber organ fins are inset, with thin black horizontal heat-grille bars.
        rounded_box(h,(sign*(cx+3.2),yy,cz+.3),(1.25,L*.048,hh*2),4,.5)
        for r in range(6):
            zz=cz-hh+(r+.5)*2*hh/6
            rounded_box(h,(sign*(cx+4.0),yy,zz),(.55,L*.054,.28),2,.11)
        # Structural separators make this a vent rather than glazing.
        if k in [0,3,6,9]:
            tube(h,[(sign*(cx+5),yy-1,cz-hh-1),(sign*(cx+5.8),yy+1,cz+hh+1)],.75,0,8)
    for yy in [cy-L*.28,cy+L*.27]:
        for zz in [cz-H*.35,cz+H*.34]:
            tube(h,[(sign*(cx+4.6),yy,zz),(sign*(cx+5.1),yy,zz)],.4,1,8)
for s in [-1,1]:
    vent_pod(s,-37,0,62,22);vent_pod(s,66,6,67,24)
    # Dorsolateral cooling vents embedded between upper carapace rows.
    for j,cy in enumerate([94,121,145,166]):
        p=surface(cy,s*.94,3)
        rounded_box(h,p,(7.8,15-j*1.6,2.9),3,.7)
        for k in range(4):
            pp=p+Vector((0,(k-1.5)*2.3,1.45));rounded_box(h,pp,(5.6,1.05,.65),4,.23)

# ANNULAR MAW: thick lips, deep dark conical gullet, nested mechanical rings.
ring(h,(0,-199,0),(0,1,0),28.5,2.1,2,96,10,.89)
ring(h,(0,-201,0),(0,1,0),30.2,.58,1,96,8,.89)
ring(h,(0,-195.4,0),(0,1,0),27.8,.8,0,96,8,.89)
# Funnel behind the intake: ring strips are open; back cap deep inside.
vs=[];n=96
for yy,r in [(-201,27.2),(-195,25.5),(-186,20.2),(-177,13.6),(-169,8.8)]:
    for i in range(n):t=i*math.tau/n;vs.append((r*math.cos(t),yy,r*.89*math.sin(t)))
fs=[]
for j in range(4):
    for i in range(n):a=j*n+i;b=j*n+(i+1)%n;fs.append((a,b,b+n,a+n))
fs.append(tuple(4*n+i for i in range(n)));h.add(vs,fs,2)
ring(h,(0,-171,0),(0,1,0),9.2,1.5,3,64,8,.89)
ring(h,(0,-182,0),(0,1,0),16.6,.5,1,64,6,.89)
for i in range(56):
    t=math.tau*i/56
    # Curved inward-pointing amber vanes, segmented like the reference.
    pts=[]
    for j in range(6):
        u=j/5;r=26.1-7*u;a=t+.085*u;pts.append((r*math.cos(a),-201+11*u,r*.89*math.sin(a)))
    tube(h,pts,[.7,.92,.88,.72,.45,.17],4,7)
    # Dark rib continuing down the gullet from each luminous tooth.
    pts2=[]
    for j in range(6):
        u=j/5;r=24-15*u;a=t+.085+.12*u;pts2.append((r*math.cos(a),-193+23*u,r*.89*math.sin(a)))
    tube(h,pts2,[.6,.72,.68,.55,.4,.28],2,6)
    if i%4==0:
        t2=t;pos=(30.7*math.cos(t2),-202,27.2*math.sin(t2));tube(h,[pos,(pos[0],-202.5,pos[2])],.42,1,8)
# Reinforced cheek mandibles extending from the shell into the lip.
for s in [-1,1]:
    for zsgn in [-1,1]:
        pts=catmull([(s*29,-201,zsgn*11),(s*35,-183,zsgn*15),(s*40,-163,zsgn*17),(s*46,-138,zsgn*16)],5)
        tube(h,pts,[2.0+3.0*math.sin(i/(len(pts)-1)*math.pi) for i in range(len(pts))],0,12,.52)
        for j in range(4):
            yy=-190+j*8;pp=Vector((s*(34+j*1.5),yy,zsgn*6));rounded_box(h,pp,(2.2,5.2,1.5),2,.45)

# Dorsal blades: swept taper, armoured root collars; clustered aft of shoulder.
for row in [-1,0,1]:
    for i,yy in enumerate([-35,-7,21,49,77,104,129,151]):
        if row and i in [0,7]:continue
        theta=row*.43;base=surface(yy+row*3,theta,2.0);ht=(23 if row==0 else 18)*math.sin((i+1)/9*math.pi)**.5*(1+.10*math.sin(i*2.7))
        pts=catmull([base,base+Vector((row*2,3,ht*.4)),base+Vector((row*5,11,ht*.78)),base+Vector((row*7,21,ht))],5)
        rr=[3.6*(1-j/(len(pts)-1))**1.05+.035 for j in range(len(pts))]
        tube(h,pts,rr,2,10,.66);ellipsoid(h,base,(5.3,7.8,2.8),0,18,8)
        tube(h,[base+Vector((row*2,0,1)),base+Vector((row*3,4,ht*.36)),base+Vector((row*5,11,ht*.7))],[.35,.28,.05],1,6)

# Tail split vanes around the engine cluster: swept, no familiar human ship tail.
for s in [-1,1]:
    for zz in [-14,15]:
        pts=catmull([(s*28,132,zz),(s*31,163,zz*1.1),(s*26,189,zz*1.08),(s*21,211,zz*.9)],6)
        rr=[6*(1-i/(len(pts)-1))**.8+.07 for i in range(len(pts))];tube(h,pts,rr,0,14,.58)
        tube(h,[p+Vector((0,0,2.2 if zz>0 else -2.2)) for p in pts[:-3]],[.30]*len(pts[:-3]),1,6)

# Three main engines, bevelled ring exits, recessed glowing interiors.
THRUSTERS=[]
for i,(x,z,r,end) in enumerate([(-24,-7,12,196),(24,-7,12,196),(0,15,9,201)]):
    tube(h,[(x,133,z),(x,147,z),(x,169,z),(x,end-4,z)],[r*.83,r*1.21,r*1.1,r],0,48)
    ring(h,(x,151,z),(0,1,0),r*1.16,.9,2,48,8)
    ring(h,(x,end-3,z),(0,1,0),r,1.4,2,64,8)
    ring(h,(x,end,z),(0,1,0),r,.55,1,64,8)
    # Hollow exit bowl in front of the solid engine body.
    vv=[]
    for yy,rr in [(end+.2,r*.9),(end-3,r*.82),(end-6,r*.58)]:
        for k in range(48):t=k*math.tau/48;vv.append((x+rr*math.cos(t),yy,z+rr*math.sin(t)))
    ff=[]
    for j in range(2):
        for k in range(48):a=j*48+k;b=j*48+(k+1)%48;ff.append((a,b,b+48,a+48))
    ff.append(tuple(96+k for k in range(48)));h.add(vv,ff,5)
    ring(h,(x,end-1,z),(0,1,0),r*.65,.85,5,48,8)
    for k in range(16):
        t=k*math.tau/16
        p1=(x+(r+.3)*math.cos(t),end-18,z+(r+.3)*math.sin(t));p2=(x+(r+.4)*math.cos(t),end-1,z+(r+.4)*math.sin(t))
        tube(h,[p1,p2],.6,2,6)
    THRUSTERS.append((x,end+.4,z))

# Six articulated harvesting tentacles, each a single rigid moving node at its socket.
arms=[]
for side in [-1,1]:
    for j,y in enumerate([-54,5,64]):
        idx=len(arms)+1;root=Vector((side*(44-j*1.5),y+(10 if side<0 else 0),-29+j*.4));g=Geo('Arm_'+str(idx),root)
        ellipsoid(h,root+Vector((0,0,2)),(10.2,10.8,5.7),0,24,10)
        ring(h,root,(0,0,1),7.4,1.1,2,40,8)
        ellipsoid(g,root,(6.3,6.3,6.5),1,24,12)
        curl=[(6,3,-12),(19,10,-26),(31-j*3,29+j*4,-39-j*2),(28-j*2,38+j*3,-51-j*2),(17+j*2,26+j*7,-54-j+(3 if side<0 else 0))]
        points=[root]+[root+Vector((side*x,dy,dz)) for x,dy,dz in curl]
        pts=catmull(points,7);N=len(pts)
        rr=[4.8*(1-i/(N-1))+.95 for i in range(N)]
        tube(g,pts,rr,3,16)
        # Overlapping armoured vertebrae with a narrow band of tendon visible.
        for k in range(0,N-2,2):
            a,b=pts[k],pts[min(k+2,N-1)];mid=(a+b)/2;direction=(b-a).normalized();length=(b-a).length
            r=rr[k]+.4
            tube(g,[a,a+direction*.5,b-direction*.55,b],[r*.91,r*1.08,r*1.02,r*.85],0,14,.88)
            ring(g,a+direction*.6,direction,r*1.02,.22,1,14,6,.88)
            # One narrow spinal rail down every link; no free-floating greebles.
            lateral=Vector((side,0,0));tube(g,[a+lateral*r*.89,mid+lateral*(r+ .15),b+lateral*r*.79],[.3,.34,.22],2,6)
        # Twin flexor cables running continuously along the lower arm.
        for c in [-1,1]:
            cable=[p+Vector((c*rr[i]*.65,-rr[i]*.72,0)) for i,p in enumerate(pts)];tube(g,cable,.40,2,7)
        end=pts[-1];ellipsoid(g,end,(1.85,2.2,2.3),2,16,8)
        # Three hooked, cutting talons.
        for k in range(3):
            t=k*math.tau/3
            off=Vector((math.cos(t)*4.0,math.sin(t)*4.0,0))
            claw=catmull([end+off*.45,end+off*1.4+Vector((0,1,-3)),end+off*1.2+Vector((0,2,-7)),end+off*.55+Vector((0,2,-10))],4)
            tube(g,claw,[1.2*(1-i/(len(claw)-1))+.025 for i in range(len(claw))],2,9)
        arms.append(g)

# Fine-scale industrial fittings: inset inspection panels, cooling combs, fasteners, pipes.
# All are seated into plates, spaced in belts leaving broad quiet areas of armour.
for side in [-1,1]:
    for j,yy in enumerate([-175,-136,-92,-60,-9,30,108,139,171]):
        theta=side*1.2;p=surface(yy,theta,2)
        n=Vector((math.sin(theta),0,math.cos(theta)));a=Vector((0,1,0));b=n.cross(a).normalized();B=Matrix(((a.x,b.x,n.x),(a.y,b.y,n.y),(a.z,b.z,n.z)))
        rounded_box(h,p,(6.5,8.6,1),2,.55,B)
        rounded_box(h,p+n*.55,(4.9,6.6,.7),0,.45,B)
        for aa in [-2.4,2.4]:
            for bb in [-3.35,3.35]:
                q=p+a*aa+b*bb+n*.8;tube(h,[q,q+n*.18],.22,1,8)
        # Small slit receiver: the ship has no windows or cockpit.
        q=p+n*.95+b*(-1.5);rounded_box(h,q,(2.3,.44,.25),4,.10,B)
    for yy in [-150,-102,-63,-20,20,60,97,132]:
        theta=side*2.04;p=surface(yy,theta,1.5)
        n=Vector((math.sin(theta),0,math.cos(theta)));a=Vector((0,1,0));b=n.cross(a);B=Matrix(((a.x,b.x,n.x),(a.y,b.y,n.y),(a.z,b.z,n.z)))
        rounded_box(h,p,(14,4.4,1.2),3,.4,B)
        for k in range(8):rounded_box(h,p+a*((k-3.5)*1.45)+n*.7,(.68,3.5,.6),1,.18,B)
    # Long braided trunk pipes tucked into the shoulder seams.
    for theta in [side*.66,side*2.61]:
        pts=[surface(-145+i*300/36,theta,1.0) for i in range(37)];tube(h,pts,.55,2,8)
        for k in range(2,35,5):
            pp=pts[k];ring(h,pp,(0,1,0),.67,.12,1,12,6)
# Fine seam rivets follow aft upper-panel lips: human-scale on enormous plates.
for ya,yb in segments[1:-1]:
    for side in [-1,1]:
        for k in range(9):
            t=side*(.72+k*.055);p=surface(yb+4*math.sin(k/8*math.pi),t,2.0);n=Vector((math.sin(t),0,math.cos(t)))
            tube(h,[p,p+n*.26],.22,1,7)

log('Geometry authored '+str(sum(len(g.f) for g in [h]+arms))+' faces')
objs=[g.object() for g in [h]+arms];hull=objs[0]
# Normalize complete visible extents exactly to the requested envelope while keeping hull centre as origin.
bpy.context.view_layer.update()
points=[o.matrix_world@v.co for o in objs for v in o.data.vertices]
lo=Vector([min(v[k] for v in points) for k in range(3)]);hi=Vector([max(v[k] for v in points) for k in range(3)])
scale=Vector((160/(hi.x-lo.x),420/(hi.y-lo.y),120/(hi.z-lo.z)))
yshift=(hi.y+lo.y)/2
for ob in objs:
    pivot=ob.location.copy()
    for v in ob.data.vertices:
        wp=v.co+pivot;wp.y-=yshift;v.co=Vector([wp[k]*scale[k] for k in range(3)])-Vector([((pivot[k]-yshift) if k==1 else pivot[k])*scale[k] for k in range(3)])
    ob.location=Vector([((pivot[k]-yshift) if k==1 else pivot[k])*scale[k] for k in range(3)])
    if ob!=hull:ob.parent=hull
# Hull origin stays exactly zero; compensate the small centre shift into its mesh.
if hull.location.length:
    shift=hull.location.copy()
    for v in hull.data.vertices:v.co+=shift
    hull.location=(0,0,0)
# Explicitly no transforms applied to the moving nodes.
for ob in objs:
    select(ob);mod=ob.modifiers.new('Triangulated runtime surface','TRIANGULATE');bpy.ops.object.modifier_apply(modifier=mod.name)
    if ob==hull:
        dec=ob.modifiers.new('Runtime surface reduction','DECIMATE');dec.ratio=.72;dec.use_collapse_triangulate=True;bpy.ops.object.modifier_apply(modifier=dec.name)
    me=ob.data;uv=me.uv_layers.active
    for f in me.polygons:
        ax=max(range(3),key=lambda k:abs(f.normal[k]));axes=[k for k in range(3) if k!=ax]
        for li in f.loop_indices:
            p=me.vertices[me.loops[li].vertex_index].co+ob.location;uv.data[li].uv=(p[axes[0]]/8,p[axes[1]]/8)

def worldp(p):
    p=Vector(p);p.y-=yshift;return Vector([p[k]*scale[k] for k in range(3)])
def empty(name,p,parent=hull):
    o=bpy.data.objects.new(name,None);sc.collection.objects.link(o);o.location=worldp(p);o.parent=parent;o.empty_display_size=2;return o
for i,p in enumerate(THRUSTERS):empty('Thruster_'+str(i+1),p)
empty('Camera_Chase',(0,315,110))
empty('Light_Nav_L',(58,5,1));empty('Light_Nav_R',(-58,5,1));empty('Light_Beacon',(0,34,35))
asset=[o for o in sc.objects]
bpy.context.view_layer.update()
tri=sum(len(o.data.polygons) for o in objs)
log('Triangles '+str(tri))
assert 80000<=tri<=200000,tri

# Renderer setup: dark blue space gradient, white upper-left key and cool fill.
world=bpy.data.worlds.new('Deep space');sc.world=world;world.use_nodes=True
nt=world.node_tree;nt.nodes.clear();out=node(nt,'ShaderNodeOutputWorld');bg=node(nt,'ShaderNodeBackground');bg.inputs['Strength'].default_value=.32
tex=node(nt,'ShaderNodeTexCoord');sep=node(nt,'ShaderNodeSeparateXYZ');nt.links.new(tex.outputs['Normal'],sep.inputs[0])
ramp=node(nt,'ShaderNodeValToRGB');ramp.color_ramp.elements[0].position=.2;ramp.color_ramp.elements[0].color=(.007,.012,.024,1);ramp.color_ramp.elements[1].position=.9;ramp.color_ramp.elements[1].color=(.055,.085,.14,1);nt.links.new(sep.outputs['Z'],ramp.inputs[0]);nt.links.new(ramp.outputs[0],bg.inputs['Color']);nt.links.new(bg.outputs[0],out.inputs[0])
def area(name,loc,power,size,col,target=(0,0,0)):
    d=bpy.data.lights.new(name,'AREA');d.energy=power;d.shape='DISK';d.size=size;d.color=col;o=bpy.data.objects.new(name,d);sc.collection.objects.link(o);o.location=loc;o.rotation_euler=(Vector(target)-o.location).to_track_quat('-Z','Y').to_euler();return o
area('Key daylight',(180,-240,280),850000,180,(1,.93,.84))
area('Cool fill',(-190,-50,70),480000,230,(.51,.68,1))
area('Aft rim',(100,220,200),1250000,170,(.68,.8,1))
area('Under bounce',(40,-80,-200),290000,220,(.64,.72,.9))
camd=bpy.data.cameras.new('Render camera');cam=bpy.data.objects.new('Render camera',camd);sc.collection.objects.link(cam);sc.camera=cam;camd.clip_end=3000

def camera(kind='hero'):
    if kind=='hero':pos=(620,-460,235);target=(0,-6,-3);camd.type='ORTHO';camd.ortho_scale=470
    elif kind=='side':pos=(650,0,24);target=(0,0,-7);camd.type='ORTHO';camd.ortho_scale=466
    elif kind=='rear':pos=(325,490,180);target=(0,25,-3);camd.type='ORTHO';camd.ortho_scale=450
    else:pos=(139,-234,54);target=(34,-150,0);camd.type='ORTHO';camd.ortho_scale=130
    cam.location=pos;cam.rotation_euler=(Vector(target)-cam.location).to_track_quat('-Z','Y').to_euler()

def render(path,w=1920,hgt=1080,samples=32):
    sc.render.resolution_x=w;sc.render.resolution_y=hgt;sc.cycles.samples=samples;sc.render.filepath=str(OUT/path);log('Render '+str(path));bpy.ops.render.render(write_still=True)

# Paint is exported as a standard image + factor; the factor is patched into the binary JSON.
def set_paint(col):
    nt=MATS[0].node_tree;p=nt.nodes.get('Principled BSDF');t=nt.nodes.get('Base');mix=nt.nodes.get('Faction multiplier')
    if not mix:mix=node(nt,'ShaderNodeMixRGB');mix.name='Faction multiplier';mix.blend_type='MULTIPLY';mix.inputs[0].default_value=1;nt.links.new(t.outputs[0],mix.inputs[1])
    mix.inputs[2].default_value=(*col,1);nt.links.new(mix.outputs[0],p.inputs['Base Color'])

def export():
    nt=MATS[0].node_tree;p=nt.nodes.get('Principled BSDF');nt.links.new(nt.nodes['Base'].outputs[0],p.inputs['Base Color'])
    bpy.ops.object.select_all(action='DESELECT')
    for o in asset:o.select_set(True)
    bpy.context.view_layer.objects.active=hull
    fp=OUT/'alien-harvester.glb'
    bpy.ops.export_scene.gltf(filepath=str(fp),export_format='GLB',use_selection=True,export_yup=True,export_apply=False,export_texcoords=True,export_normals=True,export_materials='EXPORT',export_image_format='AUTO',export_cameras=False,export_lights=False,export_extras=True)
    (OUT/'alien-harvester.audit.glb').write_bytes(fp.read_bytes())
    data=fp.read_bytes();ln,tp=struct.unpack_from('<II',data,12);doc=json.loads(data[20:20+ln]);rest=data[20+ln:]
    for m in doc['materials']:
        if m['name']=='Paint':m['pbrMetallicRoughness']['baseColorFactor']=PAINTS[0][1]+[1]
    doc['asset']['copyright']='Original Forge alien harvester. CC0 Poly Haven: '+', '.join(PH_IDS)
    blob=json.dumps(doc,separators=(',',':')).encode();blob+=b' '*((-len(blob))%4)
    fp.write_bytes(struct.pack('<III',0x46546c67,2,20+len(blob)+len(rest))+struct.pack('<II',len(blob),0x4e4f534a)+blob+rest)
    log('GLB bytes '+str(fp.stat().st_size));assert fp.stat().st_size<=12*1024*1024
    return doc

doc=export();set_paint(PAINTS[0][1])

def game(v):return [round(v.x,5),round(v.z,5),round(-v.y,5)]
points=[o.matrix_world@v.co for o in objs for v in o.data.vertices]
lo=[min(game(v)[k] for v in points) for k in range(3)];hi=[max(game(v)[k] for v in points) for k in range(3)]
nodeinfo={o.name:{'position':game(o.matrix_world.translation),'type':'mesh' if o.type=='MESH' else 'empty','parent':o.parent.name if o.parent else None} for o in asset}
meta={'asset':'alien-harvester','units':'metres','forward':'+Z','up':'+Y','left':'+X','origin':'Hull centre of mass approximation','nodes':nodeinfo,'bounding_box':{'min':lo,'max':hi,'size':[round(hi[k]-lo[k],4) for k in range(3)]},'axes':{o.name:[0,0,1] for o in objs[1:]},'paints':[{'name':n,'linear_rgb':c} for n,c in PAINTS],'triangles':tri,'materials':[m.name for m in MATS],'texture_world_repeat_metres':8,'bake':{'engine':'Cycles','device':'GPU','samples':16,'base_normal_size':1024,'orm_size':512,'sources':PH_IDS},'checks':{'moving_transforms_applied':False,'pivot_rotation_degrees':30,'export_helpers':False}}
(OUT/'nodes.json').write_text(json.dumps(meta,indent=2))
(OUT/'NOTES.md').write_text('\n'.join([
'Original 420 × 160 × 120 m alien harvester: layered carapace, intake maw, amber cooling vents, dorsal spines, six pivoted arms and three engine sockets.',
f'{tri:,} triangles; seven named mesh nodes; GLB { (OUT/"alien-harvester.glb").stat().st_size/1048576:.2f} MiB; nose +Z, up +Y, left +X, metres.',
'Materials: Paint, Titanium, HeatScorched, Recess, Lamps, Engines; Paint neutral texture × linear faction colour, default [0.10, 0.11, 0.10].',
'Cycles GPU baked tiling sets: 1024² base-colour and Paint normal; shared 768² metal normals; 512² ORM; 8 m world-scale UV repeats; no unique hull atlas.',
'Poly Haven CC0 IDs: metal_plate, metal_plate_02, rusty_metal_02; https://polyhaven.com/license ; https://polyhaven.com/a/metal_plate ; https://polyhaven.com/a/metal_plate_02 ; https://polyhaven.com/a/rusty_metal_02 .',
'Reference differences: six larger harvesting arms as requested, bespoke overlapping armour layout and three recessed rear nozzles; no windows, lettering or logos.'
])+'\n')
# Clay first: verifies actual built silhouettes before the material presentation.
camera();clay=bpy.data.materials.new('QA clay');clay.diffuse_color=(.36,.36,.36,1);clay.use_nodes=True;clay.node_tree.nodes['Principled BSDF'].inputs['Roughness'].default_value=.72;clay.node_tree.nodes['Principled BSDF'].inputs['Base Color'].default_value=(.36,.36,.36,1)
sc.view_layers[0].material_override=clay;render('clay.png',1920,1080,24);sc.view_layers[0].material_override=None
render('final.png',1920,1080,40)
camera('side');render('side.png',1920,1080,28)
camera('rear');render('rear.png',1280,720,24)
camera('close');render('close.png',1280,720,28)
# Proof of whole-assembly articulation: rotate each root 30 degrees about game +Z = Blender -Y.
camera()
for ob in objs[1:]:ob.rotation_euler.y=math.radians(-30)
bpy.context.view_layer.update()
for ob in objs[1:]:
    assert max(abs(a-b) for a,b in zip(game(ob.matrix_world.translation),nodeinfo[ob.name]['position']))<1e-4, 'Root pivot moved'
render('arms-test.png',1280,720,24)
for ob in objs[1:]:ob.rotation_euler=(0,0,0)
# Six same-view paint renders assembled losslessly in Blender (no external dependency).
W,H=640,360;canvas=np.zeros((H*2,W*3,4),dtype=np.float32)
for i,(name,col) in enumerate(PAINTS):
    set_paint(col);render('paint-'+str(i)+'.png',W,H,16)
    im=bpy.data.images.load(str(OUT/('paint-'+str(i)+'.png')),check_existing=False);a=np.array(im.pixels[:],dtype=np.float32).reshape(H,W,4)
    row=1-i//3;column=i%3;canvas[row*H:(row+1)*H,column*W:(column+1)*W]=a;bpy.data.images.remove(im)
img=bpy.data.images.new('Paint comparison',width=W*3,height=H*2,alpha=True);img.pixels.foreach_set(canvas.ravel());img.filepath_raw=str(OUT/'paints.png');img.file_format='PNG';img.save()
set_paint(PAINTS[0][1]);camera();sc.render.resolution_x=1920;sc.render.resolution_y=1080
bpy.ops.wm.save_as_mainfile(filepath=str(OUT/'harvester-source.blend'))
log('COMPLETE')

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/bin/bash -lc 'cat NOTES.md' in /home/claude-agent/forge-build/forge-assets/jobs/alien-harvester-v1
 succeeded in 0ms:
Original 420 × 160 × 120 m alien harvester: layered carapace, intake maw, amber cooling vents, dorsal spines, six pivoted arms and three engine sockets.
198,200 triangles; seven named mesh nodes; GLB 11.39 MiB; nose +Z, up +Y, left +X, metres.
Materials: Paint, Titanium, HeatScorched, Recess, Lamps, Engines; Paint neutral texture × linear faction colour, default [0.10, 0.11, 0.10].
Cycles GPU baked tiling sets: 1024² base-colour and Paint normal; shared 768² metal normals; 512² ORM; 8 m world-scale UV repeats; no unique hull atlas.
Poly Haven CC0 IDs: metal_plate, metal_plate_02, rusty_metal_02; https://polyhaven.com/license ; https://polyhaven.com/a/metal_plate ; https://polyhaven.com/a/metal_plate_02 ; https://polyhaven.com/a/rusty_metal_02 .
Reference differences: six larger harvesting arms as requested, bespoke overlapping armour layout and three recessed rear nozzles; no windows, lettering or logos.

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cat: /home/claude-agent/.agents/skills/blender-game-assets/references/critic-loop.md: No such file or directory

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 succeeded in 0ms:
/home/claude-agent/.agents/skills/blender-game-assets/SKILL.md
/home/claude-agent/.agents/skills/blender-game-assets/scripts/audit_glb.py
/home/claude-agent/.agents/skills/blender-game-assets/scripts/__pycache__/audit_glb.cpython-312.pyc
/home/claude-agent/.agents/skills/blender-game-assets/reference/preflight-and-recovery.md
/home/claude-agent/.agents/skills/blender-game-assets/reference/critic-loop.md
/home/claude-agent/.agents/skills/blender-game-assets/reference/gen_material.py
/home/claude-agent/.agents/skills/blender-game-assets/reference/runtime-parity-and-diagnostics.md
/home/claude-agent/.agents/skills/blender-game-assets/reference/car-paint-flakes.md
/home/claude-agent/.agents/skills/blender-game-assets/reference/cabinlib.py
/home/claude-agent/.agents/skills/blender-game-assets/reference/matlib.py
/home/claude-agent/.agents/skills/blender-game-assets/reference/build_tender.py
/home/claude-agent/.agents/skills/blender-game-assets/reference/furniture-reconstruction.md
/home/claude-agent/.agents/skills/blender-game-assets/reference/pack_leaf.py
/home/claude-agent/.agents/skills/blender-game-assets/reference/terrain-erosion.md
/home/claude-agent/.agents/skills/blender-game-assets/reference/baking-and-diagnostics.md
/home/claude-agent/.agents/skills/blender-game-assets/reference/build_hull.py
/home/claude-agent/.agents/skills/blender-game-assets/reference/cinematic.py
/home/claude-agent/.agents/skills/blender-game-assets/reference/build_rocks.py
/home/claude-agent/.agents/skills/blender-game-assets/reference/INDEX.md
/home/claude-agent/.agents/skills/blender-game-assets/reference/clay.py
/home/claude-agent/.agents/skills/blender-game-assets/reference/asset-delivery.md
/home/claude-agent/.agents/skills/blender-game-assets/reference/high-to-low-baking.md
/home/claude-agent/.agents/skills/blender-game-assets/reference/interior_bake/43_dressing.py
/home/claude-agent/.agents/skills/blender-game-assets/reference/interior_bake/50_assemble.py
/home/claude-agent/.agents/skills/blender-game-assets/reference/interior_bake/40_kit.py
/home/claude-agent/.agents/skills/blender-game-assets/reference/interior_bake/70_clay.py
/home/claude-agent/.agents/skills/blender-game-assets/reference/interior_bake/42_cockpit.py
/home/claude-agent/.agents/skills/blender-game-assets/reference/interior_bake/10_tile_geo.py
/home/claude-agent/.agents/skills/blender-game-assets/reference/interior_bake/20_tile_bake.py
/home/claude-agent/.agents/skills/blender-game-assets/reference/interior_bake/61_run_kit.py

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/tmp/alien-harvester-check:
total 27M
-rw-r--r-- 1 claude-agent claude-agent  11M Oct 16 18:49 alien-harvester.glb
-rw-r--r-- 1 claude-agent claude-agent  14M Oct 16 18:48 audit.glb
-rw-rw-r-- 1 claude-agent claude-agent 5.8K Oct 16 18:49 browser.log
-rw-rw-r-- 1 claude-agent claude-agent  38K Oct 16 18:52 build-v1.py
-rw-rw-r-- 1 claude-agent claude-agent  984 Oct 16 18:49 check.cjs
-rw-rw-r-- 1 claude-agent claude-agent 2.6K Oct 16 18:47 index.html
-rw-rw-r-- 1 claude-agent claude-agent   24 Oct 16 18:47 install.log
-rw-r--r-- 1 claude-agent claude-agent 612K Oct 16 18:50 metal_plate_02_diff_1k.jpg
drwxrwxr-x 7 claude-agent claude-agent 4.0K Oct 16 18:47 node_modules
-rw-rw-r-- 1 claude-agent claude-agent 1.8K Oct 16 18:47 package-lock.json
-rw-rw-r-- 1 claude-agent claude-agent  122 Oct 16 18:47 package.json
-rw-rw-r-- 1 claude-agent claude-agent 5.8K Oct 16 18:49 report.json
-rw-rw-r-- 1 claude-agent claude-agent 413K Oct 16 18:49 runtime-arms.png
-rw-rw-r-- 1 claude-agent claude-agent 414K Oct 16 18:49 runtime.png
-rw-r--r-- 1 claude-agent claude-agent 461K Oct 16 18:50 rusty_painted_metal_diff_1k.jpg
-rw-rw-r-- 1 claude-agent claude-agent  14K Oct 16 18:53 validator-v1.json

/tmp/alien-harvester-review:
total 8.0K
-rw-rw-r-- 1 claude-agent claude-agent 5.7K Oct 16 18:51 review.txt

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<!-- Distilled from vercel-labs/vgpu .claude/skills/vgpu-agent-flow/references/asset-iteration.md and
.subharness/agents/asset-author.ts + asset-critic.ts at commit 68cb1d8d198c (MIT, Copyright (c) 2025 Vercel, Inc.),
rewritten for Forge lanes (forge-agent, Astra author, a second model family as critic). -->

# Author and critic loop for a Blender asset

Use this for any authored asset that will be judged by eye: a hero prop, a character, a building, an
environment. Skip it for a mechanical re-export.

## Seats

| Seat | Who | Owns |
| --- | --- | --- |
| Author | Astra (operator law: Blender work goes to Astra) | Geometry, authored materials, UVs, bakes, Blender renders, the export |
| Runtime | The root, or one worker when the shader work is real | Loading the export in the game's actual three.js path, captures, measured costs |
| Critic | A different model family from the author, reading the real images | Findings only. Never edits the asset |

The critic must open the actual capture files. A critic that cannot read images says so and returns
BLOCKED; it never writes a visual verdict from metrics or from the author's description.

## Budget

- Default: **3 revisions, at most 2 critic passes per revision.** The brief may set another cap.
- A cap is an execution limit, not acceptance. Cap reached with open visual findings = `REVISE`
  reported as such, never a `PASS`.
- No unattended improvement loop past the cap.

## Before the first render

Write in the task folder: scope, target cameras (gameplay view, hero, rear, closest required view),
output paths, budgets (triangles, exported vertices, texture bytes and GPU memory, draw calls) and
the revision cap. Budgets are task inputs; do not copy another asset's numbers.

Run the [preflight](preflight-and-recovery.md) once: Blender starts and runs a scene operation, a
tiny bake and export round-trips through the real loader, one real runtime frame is captured.

Integrate a cheap LOW blockout in the runtime at this stage. Scale, axis, camera and material
contract problems are found before an expensive bake, not after.

## Each revision keeps

- the source revision or parameters that rebuild the previous asset;
- real hero, rear and close-up captures, same camera, light, exposure and pose every time;
- triangles, exported vertices, primitives, material count, file bytes, texture GPU memory;
- runtime draw counters, kept apart from offline estimates;
- the critic's findings, the fixes chosen, and the next measured result.

## The critic pass

The critic receives the previous AND the current captures and metrics under matched cameras (or
an explicit "first revision, no baseline"), the reference image, and the brief. It returns:

- **at most five findings**, ordered by impact, each with a stable id, the evidence path (whole
  view plus crop or image coordinates), the visible symptom, a suggested correction and a
  **measurable acceptance condition**;
- regressions against the previous revision;
- resolved / remaining / regressed status of earlier findings on a follow-up pass;
- `PASS`, `REVISE` or `BLOCKED`, with the limits of its evidence.

It compares against the reference as well as the previous revision: clean topology and progress
since last time do not make the asset match the reference. It separates the observed defect from
the suspected cause. A small whole-image difference can hide severe local damage (thin trim,
stairs, silhouette edges): it inspects crops at each delivered LOD. Design ideas are suggestions,
not new acceptance requirements.

When the cause could be the asset or the renderer, it asks for the diagnostic captures in
[runtime parity](runtime-parity-and-diagnostics.md) (maps off, AO neutral, lightmap off) rather
than guessing.

## Rules that stop false passes

- A generated concept image is never proof of a working model. Label concepts as concepts; accept
  only on real renders of the real export.
- Requested bakes need bake provenance (what was baked, from what, at what settings) and matched
  runtime captures with each contribution switched off in turn. Vertex tint and runtime shadows
  are not substitutes for a requested AO or lightmap bake.
- An atlas repair is checked on the full matched views, not only on the crop that was broken: a new
  layout can fix one edge and turn another face black.
- One writer per handoff file. A reply never gets appended to a request file another agent will
  regenerate. Superseded manifests and failed captures stay on disk.
- The author hands the root a compact result: verdict, the few decisive images, the metrics table.
  Full capture sets stay on disk; the root does not load every image.
- A user's rejection or a changed brief reopens any earlier `PASS`.

## Lessons

When a revision teaches something that will recur, write it as: evidence path, symptom, cause,
intervention, matched before/after result, scope. The root checks it and makes a narrow edit to this
skill. Reject task-specific style preferences dressed up as general rules.

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<!-- Ported from vercel-labs/vgpu skills/vgpu/blender/references/baking-and-diagnostics.md at commit 68cb1d8d198c (MIT, Copyright (c) 2025 Vercel, Inc.). Adapted for Forge: three.js runtime instead of vgpu/WebGPU, links rerouted. Upstream text otherwise kept so a re-sync stays diffable. -->

# Baking and Diagnostics

For an end-to-end reduction and transfer procedure, start with [high-to-low baking](high-to-low-baking.md).

## Prepare the final low-poly mesh

The final LOW defines the bake: transforms resolved without breaking rig pivots, clean topology, stable normals, UV seams, and triangulation. Export its tangents or verify equivalent tangent generation in the importer. Revisit affected bakes when this base changes.

Inspect hard, smooth, or weighted normals across flat panels and bevel transitions. Smoothing every face does not repair unsuitable topology. HIGH and LOW need corresponding intended surfaces, not matching vertex counts.

Before raytracing, check finite UVs, collapsed triangles, unintended overlap, padding and actual texel coverage at the final resolution. Positive chart area or a large bounding box does not guarantee coverage of a narrow exposed strip. Repeat fragile checks after export or LOD simplification. Compare whole-view AO-on/off images as well as repaired crops; a new atlas can fix one seam while making another face black.

Use stable names or groups to pair parts. An explicit cage must match LOW topology and transforms; an automatic extrusion still needs inspection. Choose projection distances for local thickness, curvature, and nearby surfaces rather than copying a universal offset.

For selected-to-active normal baking, verify the source selection, active LOW, source visibility, active image target in each receiving material, tangent space, and Y convention. Initialize unused normal texels to neutral (0.5, 0.5, 1) and AO to 1. Disable clearing between passes that accumulate into one atlas.

Isolate matched HIGH/LOW pairs when projection picks up adjacent parts. Move an explicit cage with its pair. Use compact, deterministic offsets: extreme coordinates lose precision around narrow bevels. Restore the assembly before export.

## Directional tile mapping

For shingles, boards or masonry courses, check the material axes against the intended construction direction on every differently oriented face. Dominant-axis projection can switch axes between adjacent facets, rotating rows or stretching their physical size. More texture resolution does not fix that mapping.

On a planar pitched roof, use a horizontal eave axis and an orthogonal uphill axis in the face plane, with UV distances measured in metres. For unit upward normal `N` and world up `Z`, one frame is `U = normalize(Z × N)`, `V = N × U`; horizontal roofs need a separately chosen direction. Project relative to a shared eave origin and divide by the intended tile repeat distance. Define the frame on the whole polygon before triangulation so a diagonal cannot introduce a new orientation. Check constant row height along the eave, consistent physical tile dimensions and course alignment across hips under matched close-up and distant views.

Rotate the associated color, roughness and normal maps together. Changing UV0 also changes its tangent frame: regenerate stored tangents or verify the renderer's derivative frame. Preserve a separate lighting UV layout when possible, but evaluate bake dependencies independently: unchanged UV1 can justify geometric AO reuse while changed material sampling still affects indirect lighting.

## Cap and side normals

For a straight cylinder with flat ends, cap normals point outward along the cylinder axis: opposite directions at the two ends. Smooth side normals point radially outward and have no axial component. Keep a hard shading boundary at each rim; use flat cap faces, sharp rim edges, and split corner normals or separate cap/side vertices. Coincident positions do not imply that their normals should be averaged. Actual bevels have their own transition normals; preserve those deliberately.

Check the final exported mesh after joins, welding, triangulation, axis conversion and import. Inspect cap directions, side-normal axial components, unit lengths and outward orientation. Where the format stores normals per vertex, cap and side triangles must use distinct rim vertices. Avoid a later normal-recalculation or vertex-merge step that removes the crease. Review grazing highlights with maps disabled, then rebake affected maps after correcting normals.

## Bake stable occlusion

Decide which surfaces can occlude one another throughout the expected motion. Preserve permanent contacts within rigid assemblies; avoid imprinting stationary bodywork onto rotating wheels or other changing neighbors. Choose a finite occlusion distance appropriate to the asset. Keep directional lighting and material color out of the AO bake.

Use runtime occlusion for changing environmental contacts. Smooth, low-frequency self-occlusion can use vertex data when mesh density supports it; finer variation may require a texture. Keep emissive or intentionally unshaded features from being darkened unintentionally.

## Reuse bakes by their dependencies

Keep reusable tile reflectance/normal detail separate from unique assembly AO and lightmaps. Select tile scale and lighting texel density from the closest required camera rather than increasing a single unique atlas for all detail. A tile bake must not depend on assembled-object attributes absent from its bake plane; verify representative pixels and the restored final material as well as successful image creation.

Record pass-specific cache inputs, including source identity, evaluated geometry and transforms, receiver normals/UVs, resolution, settings, seed and relevant tool versions. Include HIGH and cage inputs for projected normals, occluders for AO, and participating materials, lights and environment for illumination. Use these dependencies to invalidate only affected passes:

| Change | Recheck or invalidate |
| --- | --- |
| Receiver geometry, normals, UVs or triangulation | Dependent projected normals, AO and illumination, including LOD bindings |
| Occluder placement or shape | AO and illumination for affected receivers, including neighboring objects |
| Material reflectance, lights or environment | Illumination passes that depend on them; independent AO need not change |
| Compression, channels or mip generation only | Delivery textures and runtime validation; preserve unchanged lossless bake masters |

If the affected receiver set cannot be established, invalidate the dependent assembly pass conservatively. Reuse an entry only when its real dependency identity and validated outputs match. Never relabel stale lighting with a new key. Byte identity can justify reuse of those exact outputs, but does not prove visual equivalence of a changed scene. A packaging failure does not invalidate completed bakes whose inputs remain unchanged.

## Texture filtering and runtime conventions

Use the [asset delivery format table](asset-delivery.md#texture-delivery-choices) to choose container, codec and GPU format; keep bake masters separate from delivery conversions.

- Normals and AO are linear data. Disable sRGB conversion and avoid premultiplying data channels by alpha.
- Design island padding in pixels of the final resolution. Account for downsampling and mipmaps; more resolution cannot fix overlapping UVs.
- For a downsampled normal master, decode RGB to vectors, average, normalize, and re-encode. Average AO separately as a scalar.
- Choose channels for the actual data and shader. A single AO channel need not occupy an RGBA atlas; packing AO with normals is useful only when sampling and compression requirements are compatible.
- Preserve lossless masters and choose delivery formats per map. Measure decoded normal angular error and AO value error, including mip levels, against those masters. Verify the actual uploaded format and decoder; KTX2 is a container, not a guarantee of GPU compression or importer support. Two-channel normals need a matching reconstruction convention. Record format support and error tolerances for the target platform instead of prescribing one format for every asset.
- Estimate uncompressed residency as `width × height × bytesPerTexel`, summed over mip levels. A complete square mip chain is approximately 4/3 of its base: RGBA8 2048² is about 21.33 MiB, while R8 1024² is about 1.33 MiB. Account for the actual target format when compressed textures are used.
- Verify texture orientation, axis conversion, and the tangent frame through import. Nonuniform scales need correct normal transforms; mirrored transforms affect handedness and winding.
- Averaged normals can lose length in mipmaps. When specular highlights shimmer, consider filtering and roughness adjustment based on normal variance instead of globally blurring the intended material response.

## Diagnose before changing the bake

First [classify the defect's origin](runtime-parity-and-diagnostics.md#classify-the-defects-origin). A camera, binding or scene-composition error can resemble damaged UVs or a bad bake; the table below narrows asset-specific causes after that separation.

| Symptom | Distinguishing check | Possible correction |
| --- | --- | --- |
| Extra highlight or broken edge | Compare HIGH, unbaked LOW, and baked LOW under the same light | Inspect modifier order, bevel scope, and cage before changing the texture |
| Outer bevel clipped only in LOW | Disable secondary bevel modifiers | Restrict them by weights or groups; angle thresholds can select different edges at different densities |
| Patches or cuts on flat faces | Inspect isolated projection and cage coverage | Adjust normals, rays, or the cage; increasing its size may capture neighboring surfaces |
| Detail reverses when rotating or mirroring | Use grazing light, map toggles, and representative transforms | Fix tangent handedness or Y convention instead of arbitrarily inverting channels |
| Seams appear only at a distance | Compare base texture with mip levels | Correct gutters, filtering, precision, or texel density |
| Highlights shimmer during motion | Compare still/moving views and disable the normal map | Make normal filtering and roughness response consistent |
| AO has no visible effect | Compare the real map with neutral AO in the target material | Check the channel, UVs, blend expression, strength, and active material |
| AO slides or becomes excessive | Toggle AO while moving articulated parts | Isolate changing contacts or reduce bake distance and strength |
| Openings or recessed details disappear | Inspect close-ups and rays through the opening | Remove obstructing surfaces and coplanar overlaps |
| Blender and the game disagree | Compare each with maps enabled and disabled | Check lighting, material interpretation, axes, tangent data, and import settings |
| More detail costs more than expected | Compare per-pass draws, resident textures, and GPU timings | Address the measured bottleneck through materials, instancing, culling, LODs, or shadow simplification |

## Choose review coverage for the change

1. Match old and new assets at the actual gameplay camera.
2. Compare HIGH, unbaked LOW, and baked LOW under lighting that exposes surface errors.
3. Inspect edges, seams, openings, and nearby surfaces at close range.
4. Toggle normals, AO and baked lightmaps independently when present; use image differences where helpful. Keep the direct/indirect lighting contract explicit to detect missing terms or double application.
5. Exercise relevant motion, articulation, scales, mirrored transforms, and both sides of LOD thresholds.
6. Check a representative runtime scene with the target renderer; verify resource lifetime when integration changes it.

Scale this review to the edit. Report remaining limits honestly: finite texture resolution remains visible under extreme zoom, and reduced geometry alone does not establish a frame-rate improvement.

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/bin/bash -lc "ssh gex44 /root/blender-spike/blender-5.2.0-linux-x64/blender -b --python-expr 'import bpy; s=bpy.context.scene; print(\"COMPOSITOR\", [(p.identifier,p.type) for p in s.bl_rna.properties if \"composit\" in p.identifier]); n=bpy.data.node_groups.new(\"probe\",\"CompositorNodeTree\"); g=n.nodes.new(\"CompositorNodeGlare\"); print(\"GLARE\",[(x.name,x.identifier) for x in g.inputs]); print(\"TYPE\",g.bl_rna.properties.get(\"glare_type\"))'" in /home/claude-agent/forge-build/forge-assets/jobs/alien-harvester-v1
 exited 2 in 456ms:
bash: -c: line 1: syntax error near unexpected token `"COMPOSITOR",'
bash: -c: line 1: `/root/blender-spike/blender-5.2.0-linux-x64/blender -b --python-expr import bpy; s=bpy.context.scene; print("COMPOSITOR", [(p.identifier,p.type) for p in s.bl_rna.properties if "composit" in p.identifier]); n=bpy.data.node_groups.new("probe","CompositorNodeTree"); g=n.nodes.new("CompositorNodeGlare"); print("GLARE",[(x.name,x.identifier) for x in g.inputs]); print("TYPE",g.bl_rna.properties.get("glare_type"))'

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/bin/bash -lc 'cp build_alien-harvester.py /tmp/alien-harvester-check/build-v2.py' in /home/claude-agent/forge-build/forge-assets/jobs/alien-harvester-v1
 succeeded in 0ms:
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/bin/bash -lc "cat > /tmp/alien-harvester-check/compositor-probe.py <<'PY'
import bpy
s=bpy.context.scene
print('COMPOSITOR',[(p.identifier,p.type) for p in s.bl_rna.properties if 'composit' in p.identifier])
n=bpy.data.node_groups.new('probe','CompositorNodeTree')
g=n.nodes.new('CompositorNodeGlare')
print('GLARE',[(x.name,x.identifier, str(x.default_value) if hasattr(x,'default_value') else '') for x in g.inputs])
print('PROPS',[(p.identifier,p.type) for p in g.bl_rna.properties])
PY
scp /tmp/alien-harvester-check/compositor-probe.py gex44:/root/fal-author/alien-harvester-v1/compositor-probe.py" in /home/claude-agent/forge-build/forge-assets/jobs/alien-harvester-v1
 succeeded in 677ms:
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/bin/bash -lc 'ssh gex44 /root/blender-spike/blender-5.2.0-linux-x64/blender -b --python /root/fal-author/alien-harvester-v1/compositor-probe.py' in /home/claude-agent/forge-build/forge-assets/jobs/alien-harvester-v1
 succeeded in 6143ms:
INFO gpu_gate: gpu slot acquired by blender (pid 3886201, 6000 MiB, batch)
[INFO ] services.locationservice ...............: Not adding link to MakeHuman user data, since neither explicit path nor auto-discovery is set in preferences.
[INFO ] mpfb.init ..............................: Build info FROM_SOURCE
[INFO ] mpfb.init ..............................: Online access preference is not enabled. Not checking if MakeHuman is online.
[INFO ] mpfb.init ..............................: MPFB initialization has finished.
COMPOSITOR [('compositing_node_group', 'POINTER')]
GLARE [('Image', 'Image', '<bpy_float[4], NodeSocketColor.default_value>'), ('Type', 'Type', 'Streaks'), ('Quality', 'Quality', 'Medium'), ('Threshold', 'Highlights Threshold', '1.0'), ('Smoothness', 'Highlights Smoothness', '0.10000000149011612'), ('Clamp', 'Clamp Highlights', 'False'), ('Maximum', 'Maximum Highlights', '10.0'), ('Strength', 'Strength', '1.0'), ('Saturation', 'Saturation', '1.0'), ('Tint', 'Tint', '<bpy_float[4], NodeSocketColor.default_value>'), ('Size', 'Size', '0.5'), ('Streaks', 'Streaks', '4'), ('Streaks Angle', 'Streaks Angle', '0.0'), ('Iterations', 'Iterations', '3'), ('Fade', 'Fade', '0.8999999761581421'), ('Color Modulation', 'Color Modulation', '0.25'), ('Diagonal', 'Diagonal Star', 'True'), ('Sun Position', 'Sun Position', '<bpy_float[2], NodeSocketVectorFactor2D.default_value>'), ('Jitter', 'Jitter', '0.0'), ('Kernel Data Type', 'Kernel Data Type', 'Float'), ('Kernel', 'Float Kernel', '0.0'), ('Kernel', 'Color Kernel', '<bpy_float[4], NodeSocketColor.default_value>')]
PROPS [('rna_type', 'POINTER'), ('type', 'STRING'), ('location', 'FLOAT'), ('location_absolute', 'FLOAT'), ('width', 'FLOAT'), ('height', 'FLOAT'), ('dimensions', 'FLOAT'), ('name', 'STRING'), ('label', 'STRING'), ('inputs', 'COLLECTION'), ('outputs', 'COLLECTION'), ('panel_states', 'COLLECTION'), ('internal_links', 'COLLECTION'), ('parent', 'POINTER'), ('warning_propagation', 'ENUM'), ('use_custom_color', 'BOOLEAN'), ('color', 'FLOAT'), ('color_tag', 'ENUM'), ('select', 'BOOLEAN'), ('show_options', 'BOOLEAN'), ('show_preview', 'BOOLEAN'), ('hide', 'BOOLEAN'), ('mute', 'BOOLEAN'), ('show_texture', 'BOOLEAN'), ('bl_idname', 'STRING'), ('bl_label', 'STRING'), ('bl_description', 'STRING'), ('bl_icon', 'ENUM'), ('bl_static_type', 'STRING'), ('bl_width_default', 'FLOAT'), ('bl_width_min', 'FLOAT'), ('bl_width_max', 'FLOAT'), ('bl_height_default', 'FLOAT'), ('bl_height_min', 'FLOAT'), ('bl_height_max', 'FLOAT')]
Blender 5.2.0 LTS (hash fbe6228777e7 built 2026-07-14 01:32:04)

Blender quit

codex
The remaining visual gaps are at the front and rear: the maw needs a heavier overhanging shell, and the engines need visible hot chambers. I’m also varying the arm poses and adding chipped edges so the large armour plates show their scale.

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/bin/bash -lc "python - <<'PY'
import json,struct
b=open('alien-harvester.glb','rb').read();n=struct.unpack_from('<I',b,12)[0];d=json.loads(b[20:20+n]);print('bytes',len(b),'accessors',len(d['accessors']),'views',len(d['bufferViews']))
print(d['meshes'][0]['primitives'][0]);print(d['accessors'][:4]);print(d['bufferViews'][:4])
PY" in /home/claude-agent/forge-build/forge-assets/jobs/alien-harvester-v1
 exited 127 in 0ms:
/bin/bash: line 1: python: command not found

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/bin/bash -lc "python3 - <<'PY'
import json,struct
b=open('alien-harvester.glb','rb').read();n=struct.unpack_from('<I',b,12)[0];d=json.loads(b[20:20+n]);print('bytes',len(b),'accessors',len(d['accessors']),'views',len(d['bufferViews']))
print(d['meshes'][0]['primitives'][0]);print(d['accessors'][:4]);print(d['bufferViews'][:4])
PY" in /home/claude-agent/forge-build/forge-assets/jobs/alien-harvester-v1
 succeeded in 0ms:
bytes 11946932 accessors 120 views 131
{'attributes': {'POSITION': 0, 'NORMAL': 1, 'TEXCOORD_0': 2}, 'indices': 3, 'material': 0}
[{'bufferView': 0, 'componentType': 5126, 'count': 1900, 'max': [5.853263854980469, 1.7840824127197266, 6.507476806640625], 'min': [-35.255592346191406, -40.55393981933594, -41.04267883300781], 'type': 'VEC3'}, {'bufferView': 1, 'componentType': 5126, 'count': 1900, 'type': 'VEC3'}, {'bufferView': 2, 'componentType': 5126, 'count': 1900, 'type': 'VEC2'}, {'bufferView': 3, 'componentType': 5123, 'count': 5508, 'type': 'SCALAR'}]
[{'buffer': 0, 'byteLength': 22800, 'byteOffset': 0, 'target': 34962}, {'buffer': 0, 'byteLength': 22800, 'byteOffset': 22800, 'target': 34962}, {'buffer': 0, 'byteLength': 15200, 'byteOffset': 45600, 'target': 34962}, {'buffer': 0, 'byteLength': 11016, 'byteOffset': 60800, 'target': 34963}]

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/bin/bash -lc "python3 - <<'PY'
import json,struct
b=open('alien-harvester.glb','rb').read();n=struct.unpack_from('<I',b,12)[0];d=json.loads(b[20:20+n]);print([(i['name'],d['bufferViews'][i['bufferView']]['byteLength']) for i in d['images']]);print('vertices',sum(d['accessors'][p['attributes']['POSITION']]['count'] for m in d['meshes'] for p in m['primitives']))
PY" in /home/claude-agent/forge-build/forge-assets/jobs/alien-harvester-v1
 succeeded in 0ms:
[('Paint_Normal', 1186553), ('Paint_ORM', 297324), ('Paint_Base', 177896), ('Titanium_Normal', 789277), ('Titanium_ORM', 298423), ('Titanium_Base', 43499), ('HeatScorched_Normal', 775639), ('HeatScorched_ORM', 235431), ('HeatScorched_Base', 94868), ('Recess_ORM', 297323), ('Recess_Base', 38875)]
vertices 202967

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/bin/bash -lc "cat > /tmp/alien-harvester-check/revise3.py <<'PY'
from pathlib import Path
p=Path('/home/claude-agent/forge-build/forge-assets/jobs/alien-harvester-v1/build_alien-harvester.py')
s=p.read_text()
s=s.replace(\"normal=node(nt,'ShaderNodeNormalMap');normal.inputs['Strength'].default_value=.45\", \"normal=node(nt,'ShaderNodeNormalMap');normal.inputs['Strength'].default_value=.65\")
s=s.replace(\"lum=mathnode(nt,'MINIMUM',mathnode(nt,'ADD',mathnode(nt,'MULTIPLY',bw.outputs[0],3.7),.36),.96)\",\"lum=mathnode(nt,'MINIMUM',mathnode(nt,'ADD',mathnode(nt,'MULTIPLY',bw.outputs[0],4.6),.16),.96)\")
s=s.replace(\"grime=mathnode(nt,'ADD',mathnode(nt,'MULTIPLY',macro.outputs['Fac'],.38),.62)\\n        base=color_mix(nt,lum,grime,1,'MULTIPLY');rough=.30;metal=.64\", \"\"\"grime=mathnode(nt,'ADD',mathnode(nt,'MULTIPLY',macro.outputs['Fac'],.68),.30)
        # Directional oxidation and fine scratches baked into the neutral reflectance.
        stretch=node(nt,'ShaderNodeVectorMath');stretch.operation='MULTIPLY';stretch.inputs[1].default_value=(.7,19,1);lk.new(uv.outputs['UV'],stretch.inputs[0])
        streak=node(nt,'ShaderNodeTexNoise');streak.inputs['Scale'].default_value=8;streak.inputs['Detail'].default_value=4;lk.new(stretch.outputs[0],streak.inputs['Vector'])
        sr=node(nt,'ShaderNodeValToRGB');sr.color_ramp.elements[0].position=.32;sr.color_ramp.elements[0].color=(.27,.27,.27,1);sr.color_ramp.elements[1].position=.65;sr.color_ramp.elements[1].color=(1,1,1,1);lk.new(streak.outputs['Fac'],sr.inputs[0])
        base=color_mix(nt,color_mix(nt,lum,grime,1,'MULTIPLY'),sr.outputs[0],.32,'MULTIPLY');rough=.28;metal=.72\"\"\")
s=s.replace(\"('Normal',1024 if kind=='paint' else 768)\",\"('Normal',1024 if kind=='paint' else 512)\")
# Make the inner skeleton a visible, armoured stack under the forward carapace.
needle='# Secondary flush access outlines and polished damaged edges at human scale.'
s=s.replace(needle,\"\"\"# Forward ventral rib armour: interlocking plates with pressure seals and steel heel strips.
for side in [-1,1]:
    for j,yy in enumerate([-178,-157,-136,-115,-94,-73]):
        plate(h,yy-6,yy+10,side*1.97,side*3.12,3.0,0,-3)
        pts=[surface(yy+10,side*(2.03+i*.102),3.05) for i in range(11)]
        tube(h,pts,.48,2,7)
        for i in [1,5,9]:
            pp=pts[i];nn=Vector((side*math.sin(2.03+i*.102),0,math.cos(2.03+i*.102)))
            tube(h,[pp,pp+nn*.33],.28,1,8)
\"\"\"+needle)
# Main vents thick diagonal vanes; alternate shapes.
s=s.replace(\"p2=catmull([(y,0,z) for y,z in raw+[raw[0],raw[1]]],4)[:-4]\", \"\"\"if cy>0:raw=[(-L*.53,-H*.29),(-L*.36,H*.45),(L*.41,H*.42),(L*.52,H*.23),(L*.45,-H*.31),(L*.21,-H*.46),(-L*.35,-H*.43)]
    p2=catmull([(y,0,z) for y,z in raw+[raw[0],raw[1]]],4)[:-4]\"\"\")
s=s.replace(\"if k in [0,3,6,9]:\", \"if k in [0,2,5,8,10]:\")
s=s.replace(\"yy-1,cz-hh-1),(sign*(cx+5.8),yy+1,cz+hh+1)],.75,0,8)\",\"yy-2.4,cz-hh-1),(sign*(cx+5.8),yy+2.4,cz+hh+1)],1.15,0,10)\")
a=s.index('    # Dorsolateral cooling vents embedded')
b=s.index('# ANNULAR MAW',a)
s=s[:a]+\"\"\"    # Flush dorsal cooling slots mounted in the curved shell tangent plane.
    for j,cy in enumerate([94,119,143,165]):
        theta=s*.94;p=surface(cy,theta,1.85)
        n=Vector((math.sin(theta),0,math.cos(theta)));aa=Vector((0,1,0));bb=n.cross(aa).normalized();B=Matrix(((aa.x,bb.x,n.x),(aa.y,bb.y,n.y),(aa.z,bb.z,n.z)))
        rounded_box(h,p,(18-j*1.6,7.2,1.9),2,.6,B)
        rounded_box(h,p+n*.7,(15.8-j*1.6,5.2,.9),3,.35,B)
        for k in range(5):
            pp=p+aa*((k-2)*(2.7-j*.24))+n*1.2;rounded_box(h,pp,(1.5,4.5,.45),4,.18,B)

\"\"\"+s[b:]
a=s.index('# Reinforced cheek mandibles')
b=s.index('# Dorsal blades',a)
s=s[:a]+\"\"\"# Heavy overhanging brow and lower mandibles swallow the maw rim into the carapace.
# These are closed, curved armour shells, not rods floating beside the cheek.
plate(h,-207,-157,-.93,.93,3.1,0,-6)
for side in [-1,1]:
    plate(h,-205,-151,side*.98,side*1.94,3.2,0,7)
    plate(h,-207,-154,side*2.01,side*3.10,3.0,0,-4)
    # Three recessed hydraulic channels and layered reinforcement around the maw cheek.
    for k in range(3):
        theta=side*(1.35+k*.17)
        pts=[surface(y,theta,3.42) for y in [-198,-195,-185,-180]]
        tube(h,pts,[.38,.68,.68,.2],2,8)
        tube(h,[surface(y,theta,3.9) for y in [-194,-190,-186]],[.12,.24,.12],1,6)
    for theta in [side*.95,side*1.97]:
        pts=[surface(-203+j*5.1,theta,3.4) for j in range(10)]
        tube(h,pts,.5,2,8)
# Irregular impact chips catch light along exposed plate lips, with dark undercuts.
# Chip strips are attached to the armour rim and do not change faction colour regions.
for jj,(ya,yb) in enumerate(segments[:-1]):
    for side in [-1,1]:
        for kk in range(7):
            theta=side*(.20+kk*.355+random.uniform(-.07,.07))
            yy=yb-3+random.uniform(-1,1);dt=random.uniform(.018,.046)
            pp=[surface(yy,theta+i*dt/4,2.0) for i in range(5)]
            tube(h,pp,[.035,.09,.12,.07,.025],1,5)

\"\"\"+s[b:]
# engineparts geometry glow band.
s=s.replace(\"ring(h,(x,151,z),(0,1,0),r*1.16,.9,2,48,8)\",\"\"\"ring(h,(x,151,z),(0,1,0),r*1.16,.9,2,48,8)
    # Exposed hot chamber between overlapping casing collars, visible from the side.
    for yy in [165,167.3,169.6,171.9]:ring(h,(x,yy,z),(0,1,0),r*1.115,.82,5,48,6)
    for yy in [162,175]:ring(h,(x,yy,z),(0,1,0),r*1.15,1.2,2,48,8)
    for k in range(8):
        t=k*math.tau/8
        tube(h,[(x+r*1.17*math.cos(t),161,z+r*1.17*math.sin(t)),(x+r*1.17*math.cos(t),176,z+r*1.17*math.sin(t))],.7,2,7)\"\"\")
s=s.replace(\"curl=[(6,3,-12),(19,10,-26),(31-j*3,29+j*4,-39-j*2),(28-j*2,38+j*3,-51-j*2),(17+j*2,26+j*7,-54-j+(3 if side<0 else 0))]\", \"\"\"dy=[[-3,-3,11,18,7],[4,8,13,6,-4],[6,20,36,45,37]][j]
        if side<0:dy=[v+5*math.sin(k*1.4+j) for k,v in enumerate(dy)]
        curl=[(6,dy[0],-12),(18-j,dy[1],-26),(30-j*4,dy[2],-39-j*2),(26-j*4,dy[3],-50-j*2),(16+j,dy[4],-54-j+(3 if side<0 else 0))]\"\"\")
s=s.replace(\"off=Vector((math.cos(t)*4.0,math.sin(t)*4.0,0))\", \"off=Vector((math.cos(t)*5.6,math.sin(t)*5.6,0))\")
s=s.replace(\"tube(g,claw,[1.2*(1-i/(len(claw)-1))+.025 for i in range(len(claw))],2,9)\",\"\"\"tube(g,claw,[1.65*(1-i/(len(claw)-1))+.025 for i in range(len(claw))],2,10)
            edge=[p+off.normalized()*.23 for p in claw[-7:]];tube(g,edge,[.25,.23,.20,.16,.12,.08,.02],1,6)\"\"\")
# Material budget remains guaranteed, dynamically redistribute hull tessellation around fixed arms.
s=s.replace(\"dec.ratio=.72;\", \"dec.ratio=min(.90,(187000-sum(len(a.data.polygons)*2 for a in objs[1:]))/len(ob.data.polygons));\")
# Arms have not yet triangulated at that moment => current quads approx2 as above; finalactualbudget below.
s=s.replace(\"export_normals=True,export_materials\", \"export_normals=True,export_tangents=True,export_materials\")
# Need lossless factor patch plus portable quantized vertex normals/tangents.
a=s.index(\"    (OUT/'alien-harvester.audit.glb').write_bytes\")
b=s.index(\"    log('GLB bytes '\",a)
s=s[:a]+\"\"\"    data=fp.read_bytes();ln,tp=struct.unpack_from('<II',data,12);doc=json.loads(data[20:20+ln]);binary=data[28+ln:]
    # Normal/tangent vectors use signed normalized 16-bit values (<0.004 degree error).
    # Position/UV remain float32 in metres. KHR_mesh_quantization is supported by glTF loaders.
    compact={}
    for mesh in doc['meshes']:
        for prim in mesh['primitives']:
            for key in ['NORMAL','TANGENT']:
                if key not in prim['attributes']:continue
                ai=prim['attributes'][key];acc=doc['accessors'][ai];vi=acc['bufferView']
                if vi in compact:continue
                view=doc['bufferViews'][vi];dim=3 if key=='NORMAL' else 4
                assert acc['componentType']==5126 and acc.get('byteOffset',0)==0 and not view.get('byteStride')
                vals=np.frombuffer(binary,dtype='<f4',count=acc['count']*dim,offset=view['byteOffset']).reshape(-1,dim)
                packed=np.zeros((len(vals),4),dtype='<i2');packed[:,:dim]=np.rint(np.clip(vals,-1,1)*32767).astype('<i2')
                compact[vi]=packed.tobytes();acc['componentType']=5122;acc['normalized']=True;view['byteStride']=8
    rebuilt=bytearray()
    for vi,view in enumerate(doc['bufferViews']):
        payload=compact.get(vi,binary[view.get('byteOffset',0):view.get('byteOffset',0)+view['byteLength']])
        rebuilt.extend(b'\\\\x00'*((-len(rebuilt))%4));view['byteOffset']=len(rebuilt);view['byteLength']=len(payload);rebuilt.extend(payload)
    rebuilt.extend(b'\\\\x00'*((-len(rebuilt))%4));doc['buffers'][0]['byteLength']=len(rebuilt)
    for key in ['extensionsUsed','extensionsRequired']:
        doc.setdefault(key,[])
        if 'KHR_mesh_quantization' not in doc[key]:doc[key].append('KHR_mesh_quantization')
    for m in doc['materials']:
        if m['name']=='Paint':m['pbrMetallicRoughness']['baseColorFactor']=PAINTS[0][1]+[1]
    doc['asset']['copyright']='Original Forge alien harvester. CC0 Poly Haven: '+', '.join(PH_IDS)
    blob=json.dumps(doc,separators=(',',':')).encode();blob+=b' '*((-len(blob))%4)
    rest=struct.pack('<II',len(rebuilt),0x004e4942)+rebuilt
    fp.write_bytes(struct.pack('<III',0x46546c67,2,20+len(blob)+len(rest))+struct.pack('<II',len(blob),0x4e4f534a)+blob+rest)
\"\"\"+s[b:]
s=s.replace('<=12*1024*1024','<=12_000_000')
# Slight optical bloom only for genuine >1 emissive values; keep material modest for runtime.
s=s.replace(\"doc=export();set_paint(PAINTS[0][1])\", \"\"\"doc=export();set_paint(PAINTS[0][1])
comp=bpy.data.node_groups.new('Photographic emissive halo','CompositorNodeTree');sc.compositing_node_group=comp
comp.interface.new_socket(name='Image',in_out='OUTPUT',socket_type='NodeSocketColor')
rl=comp.nodes.new('CompositorNodeRLayers');glare=comp.nodes.new('CompositorNodeGlare');glare.inputs['Type'].default_value='Fog Glow';glare.inputs['Quality'].default_value='High';glare.inputs['Threshold'].default_value=1.1;glare.inputs['Strength'].default_value=.20;glare.inputs['Size'].default_value=.22
co=comp.nodes.new('NodeGroupOutput');comp.links.new(rl.outputs['Image'],glare.inputs['Image']);comp.links.new(glare.outputs['Image'],co.inputs['Image'])\"\"\")
s=s.replace('shared 768² metal normals','shared 512² metal normals')
s=s.replace(\"'base_normal_size':1024,'orm_size':512\", \"'base_size':1024,'normal_sizes':[1024,512],'orm_size':512\")
p.write_text(s)
PY
python3 /tmp/alien-harvester-check/revise3.py
python3 -m py_compile build_alien-harvester.py
scp build_alien-harvester.py gex44:/root/fal-author/alien-harvester-v1/build_alien-harvester.py" in /home/claude-agent/forge-build/forge-assets/jobs/alien-harvester-v1
 succeeded in 1126ms:
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/bin/bash -lc "ssh gex44 '/root/blender-spike/blender-5.2.0-linux-x64/blender -b --python-exit-code 1 --python /root/fal-author/alien-harvester-v1/build_alien-harvester.py > /root/fal-author/alien-harvester-v1/build.log 2>&1'" in /home/claude-agent/forge-build/forge-assets/jobs/alien-harvester-v1
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/bin/bash -lc 'mkdir -p /tmp/alien-harvester-review/v2
cp final.png side.png close.png clay.png paints.png nodes.json NOTES.md /tmp/alien-harvester-review/v2/' in /home/claude-agent/forge-build/forge-assets/jobs/alien-harvester-v1
 succeeded in 0ms:
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/bin/bash -lc 'ssh gex44 tail -n 12 /root/fal-author/alien-harvester-v1/build.log' in /home/claude-agent/forge-build/forge-assets/jobs/alien-harvester-v1
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/bin/bash -lc 'cat /tmp/alien-harvester-check/index.html' in /home/claude-agent/forge-build/forge-assets/jobs/alien-harvester-v1
 succeeded in 0ms:
<!doctype html><meta charset="utf-8"><style>body{margin:0;background:#03070c}canvas{display:block}</style>
<script type="importmap">{"imports":{"three":"./node_modules/three/build/three.module.js","three/addons/":"./node_modules/three/examples/jsm/"}}</script>
<script type="module">
import * as T from 'three';
import {GLTFLoader} from 'three/addons/loaders/GLTFLoader.js';
import {DRACOLoader} from 'three/addons/loaders/DRACOLoader.js';
const r=new T.WebGLRenderer({antialias:true,preserveDrawingBuffer:true});r.setSize(1600,900);r.setPixelRatio(1);r.outputColorSpace=T.SRGBColorSpace;r.toneMapping=T.AgXToneMapping;r.toneMappingExposure=1;document.body.append(r.domElement);
const s=new T.Scene();s.background=new T.Color('#050a12');
const camera=new T.OrthographicCamera(-235,235,235*900/1600,-235*900/1600,1,2000);camera.position.set(350,255,520);camera.lookAt(0,-3,6);
s.add(new T.HemisphereLight(0x99bbff,0x606b86,1.5));
for(const [p,c,pow] of [[[180,280,240],0xfff2e4,4.5],[[-190,70,50],0x82adff,2],[[100,200,-220],0xadcaff,4.7]]){const l=new T.DirectionalLight(c,pow);l.position.set(...p);s.add(l)}
const draco=new DRACOLoader();draco.setDecoderPath('./node_modules/three/examples/jsm/libs/draco/gltf/');
const loader=new GLTFLoader();loader.setDRACOLoader(draco);
try{
const gltf=await loader.loadAsync('./alien-harvester.glb');const model=gltf.scene;s.add(model);s.updateMatrixWorld(true);
const bounds=new T.Box3().setFromObject(model);let tris=0,meshes=0;let textures=new Map(),mats=new Map(),nodes={};
model.traverse(o=>{nodes[o.name]=o.getWorldPosition(new T.Vector3()).toArray();if(o.isMesh){meshes++;tris+=(o.geometry.index?.count||o.geometry.attributes.position.count)/3;for(const m of Array.isArray(o.material)?o.material:[o.material]){mats.set(m.name,m);for(const k of ['map','normalMap','roughnessMap','metalnessMap','aoMap']){const t=m[k];if(t)textures.set(t.uuid,[t.image.width,t.image.height,k])}}}});
r.render(s,camera);window.report={bounds:[bounds.min.toArray(),bounds.max.toArray()],size:bounds.getSize(new T.Vector3()).toArray(),triangles:tris,meshes,drawCalls:r.info.render.calls,materials:[...mats.keys()],textures:[...textures.values()],nodes,paint:mats.get('Paint')?.color.toArray(),backend:r.getContext().getParameter(r.getContext().RENDERER)};
window.articulate=()=>{model.traverse(o=>{if(/^Arm_\d+$/.test(o.name))o.rotation.z=Math.PI/6});r.render(s,camera)};
window.mapsOff=()=>{for(const m of mats.values()){m.normalMap=null;m.aoMap=null;m.needsUpdate=true;}r.render(s,camera)};
window.ready=true;
}catch(e){window.failure=String(e);console.error(e)}
</script>

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/bin/bash -lc "ssh gex44 'ps -eo pid,etime,args | rg \"alien-harvester-v1|gpu_gate\" | head -n 12'" in /home/claude-agent/forge-build/forge-assets/jobs/alien-harvester-v1
 succeeded in 657ms:
bash: line 1: rg: command not found

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/bin/bash -lc "python3 - <<'PY'
import json,struct
b=open('alien-harvester.glb','rb').read();n=struct.unpack_from('<I',b,12)[0];d=json.loads(b[20:20+n]);print(d['nodes'][:3]);print([n for n in d['nodes'] if n['name'] in ['Hull','Thruster_1','Camera_Chase']])
PY" in /home/claude-agent/forge-build/forge-assets/jobs/alien-harvester-v1
 succeeded in 0ms:
[{'mesh': 0, 'name': 'Arm_1', 'translation': [-44.5992431640625, -21.78104591369629, 49.01552963256836]}, {'mesh': 1, 'name': 'Arm_2', 'translation': [-43.07881546020508, -21.48061752319336, -10.909292221069336]}, {'mesh': 2, 'name': 'Arm_3', 'translation': [-41.558387756347656, -21.180191040039062, -70.83411407470703]}]
[{'name': 'Camera_Chase', 'translation': [0, 82.61775970458984, -315.6117858886719]}, {'name': 'Thruster_1', 'translation': [-24.326860427856445, -5.25749397277832, -195.15272521972656]}, {'children': [0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12], 'mesh': 6, 'name': 'Hull'}]

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/bin/bash -lc 'ssh gex44 tail -n 15 /root/fal-author/alien-harvester-v1/build.log' in /home/claude-agent/forge-build/forge-assets/jobs/alien-harvester-v1
 succeeded in 472ms:
21:00:25 | INFO: Primitives created: 4
21:00:25 | INFO: Finished glTF 2.0 export in 0.3610405921936035 s

HARVESTER 12.7 GLB bytes 12057052
Traceback (most recent call last):
  File "/root/fal-author/alien-harvester-v1/build_alien-harvester.py", line 666, in <module>
    doc=export();set_paint(PAINTS[0][1])
  File "/root/fal-author/alien-harvester-v1/build_alien-harvester.py", line 663, in export
    log('GLB bytes '+str(fp.stat().st_size));assert fp.stat().st_size<=12_000_000
                                                    ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
AssertionError

Error: script failed, file: '/root/fal-author/alien-harvester-v1/build_alien-harvester.py', exiting.

Blender quit

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/bin/bash -lc "python3 - <<'PY'
p='build_alien-harvester.py'
s=open(p).read().replace('(187000-sum','(182000-sum')
open(p,'w').write(s)
PY
scp build_alien-harvester.py gex44:/root/fal-author/alien-harvester-v1/build_alien-harvester.py" in /home/claude-agent/forge-build/forge-assets/jobs/alien-harvester-v1
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/bin/bash -lc "ssh gex44 '/root/blender-spike/blender-5.2.0-linux-x64/blender -b --python-exit-code 1 --python /root/fal-author/alien-harvester-v1/build_alien-harvester.py > /root/fal-author/alien-harvester-v1/build.log 2>&1'" in /home/claude-agent/forge-build/forge-assets/jobs/alien-harvester-v1
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/bin/bash -lc "rg -n '5122|normalized|stride|NORMAL|KHR_mesh|component' /home/claude-agent/.agents/skills/blender-game-assets/scripts/audit_glb.py" in /home/claude-agent/forge-build/forge-assets/jobs/alien-harvester-v1
 succeeded in 0ms:
39:    dtypes = {5120: 'i1', 5121: 'u1', 5122: '<i2', 5123: '<u2', 5125: '<u4', 5126: '<f4'}
49:        dtype = np.dtype(dtypes[q['componentType']])
51:        stride = v.get('byteStride', dtype.itemsize * width)
54:        end = start + (count - 1) * stride + width * dtype.itemsize if count else start
56:        if count < 0 or start < 0 or base < 0 or stride < dtype.itemsize * width or end > v['byteLength'] or base + v['byteLength'] > buffers[0]['byteLength']:
59:                          offset=base + start, strides=(stride, dtype.itemsize))
68:            if pos.shape[1] != 3 or g['accessors'][primitive['attributes']['POSITION']].get('normalized'):
69:                raise ValueError('Expected non-normalized VEC3 positions')
73:                if q['type'] != 'SCALAR' or q['componentType'] not in (5121, 5123, 5125):
83:                         'nonfinite_attribute_components': sum(int((~np.isfinite(a)).sum()) for a in attrs.values())})
122:    for key in ['triangles', 'zero_area_triangles', 'nonfinite_attribute_components']:
124:    result['findings'] = [key for key in ['zero_area_triangles', 'nonfinite_attribute_components', 'external_uris', 'duplicate_primitives'] if result[key]]

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/bin/bash -lc 'cat /tmp/alien-harvester-check/check.cjs' in /home/claude-agent/forge-build/forge-assets/jobs/alien-harvester-v1
 succeeded in 0ms:
const {chromium}=require('playwright');const fs=require('fs');
(async()=>{const browser=await chromium.launch({headless:true,executablePath:'/home/claude-agent/.cache/ms-playwright/chromium-1223/chrome-linux/chrome',args:['--no-sandbox','--use-angle=swiftshader','--enable-unsafe-swiftshader']});const page=await browser.newPage({viewport:{width:1600,height:900}});let errors=[];page.on('pageerror',e=>errors.push(String(e)));await page.goto('http://127.0.0.1:8847/');await page.waitForFunction(()=>window.ready||window.failure,{timeout:120000});const report=await page.evaluate(()=>window.report||window.failure);fs.writeFileSync('/tmp/alien-harvester-check/report.json',JSON.stringify({report,errors},null,2));await page.screenshot({path:'/tmp/alien-harvester-check/runtime.png'});await page.evaluate(()=>window.articulate());await page.screenshot({path:'/tmp/alien-harvester-check/runtime-arms.png'});await browser.close();console.log(JSON.stringify({report,errors},null,2));})();

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/bin/bash -lc 'ssh gex44 tail -n 15 /root/fal-author/alien-harvester-v1/build.log' in /home/claude-agent/forge-build/forge-assets/jobs/alien-harvester-v1
 succeeded in 430ms:
codex
The rebuild is baking the worn metal textures and checking the export budget. The GLB has six separate arm pivots, three thruster sockets, and a single recolourable Paint material; the next check is how those survive loading in a game renderer.

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/bin/bash -lc 'ssh gex44 tail -n 20 /root/fal-author/alien-harvester-v1/build.log' in /home/claude-agent/forge-build/forge-assets/jobs/alien-harvester-v1
 succeeded in 382ms:
21:01:36 | INFO: Extracting primitive: Arm_2
21:01:36 | INFO: Primitives created: 4
21:01:36 | INFO: Extracting primitive: Arm_3
21:01:36 | INFO: Primitives created: 4
21:01:36 | INFO: Extracting primitive: Arm_4
21:01:36 | INFO: Primitives created: 4
21:01:36 | INFO: Extracting primitive: Arm_5
21:01:36 | INFO: Primitives created: 4
21:01:36 | INFO: Extracting primitive: Arm_6
21:01:36 | INFO: Primitives created: 4
21:01:36 | INFO: Finished glTF 2.0 export in 0.3684577941894531 s

HARVESTER 11.8 GLB bytes 11878984
/root/fal-author/alien-harvester-v1/build_alien-harvester.py:687: DeprecationWarning: 'Material.use_nodes' is expected to be removed in Blender 6.0
  camera();clay=bpy.data.materials.new('QA clay');clay.diffuse_color=(.36,.36,.36,1);clay.use_nodes=True;clay.node_tree.nodes['Principled BSDF'].inputs['Roughness'].default_value=.72;clay.node_tree.nodes['Principled BSDF'].inputs['Base Color'].default_value=(.36,.36,.36,1)
HARVESTER 12.3 Render clay.png
00:21.058  render           | Saved: '/root/fal-author/alien-harvester-v1/clay.png'
HARVESTER 20.6 Render final.png
00:29.262  render           | Saved: '/root/fal-author/alien-harvester-v1/final.png'
HARVESTER 28.8 Render side.png

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/bin/bash -lc 'scp gex44:/root/fal-author/alien-harvester-v1/{alien-harvester.glb,final.png,side.png,clay.png,close.png,arms-test.png,paints.png,nodes.json,NOTES.md} .' in /home/claude-agent/forge-build/forge-assets/jobs/alien-harvester-v1
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/bin/bash -lc "python3 - <<'PY'
p='/tmp/alien-harvester-check/index.html'
s=open(p).read().replace('camera.position.set(350,255,520)','camera.position.set(620,235,460)').replace('0x606b86,1.5','0x606b86,.55').replace('0xfff2e4,4.5','0xfff2e4,2.2').replace('0x82adff,2]','0x82adff,.9]').replace('0xadcaff,4.7','0xadcaff,2.8')
s=s.replace(\"window.mapsOff=()=>{for(const m of mats.values()){m.normalMap=null;m.aoMap=null;m.needsUpdate=true;}r.render(s,camera)};\", \"\"\"const originals=new Map([...mats.values()].map(m=>[m,[m.normalMap,m.aoMap]]));
window.resetPose=()=>{model.traverse(o=>{if(/"'^Arm_'"\\\\d+"'$/.test(o.name))o.rotation.z=0});r.render(s,camera)};
window.mapsOff=(kind)=>{for(const m of mats.values()){m.normalMap=kind==='"'normal'?null:originals.get(m)[0];m.aoMap=kind==='ao'?null:originals.get(m)[1];m.needsUpdate=true;}r.render(s,camera)};\"\"\")
open(p,'w').write(s)
p='/tmp/alien-harvester-check/check.cjs';s=open(p).read().replace(\"await browser.close();\", \"await page.evaluate(()=>window.resetPose());await page.evaluate(()=>window.mapsOff('normal'));await page.screenshot({path:'/tmp/alien-harvester-check/runtime-no-normal.png'});await page.evaluate(()=>window.mapsOff('ao'));await page.screenshot({path:'/tmp/alien-harvester-check/runtime-no-ao.png'});await browser.close();\")
open(p,'w').write(s)
PY" in /home/claude-agent/forge-build/forge-assets/jobs/alien-harvester-v1
 succeeded in 0ms:
 succeeded in 92118ms:
 succeeded in 9305ms:
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/bin/bash -lc 'ssh gex44 tail -n 8 /root/fal-author/alien-harvester-v1/build.log' in /home/claude-agent/forge-build/forge-assets/jobs/alien-harvester-v1
 succeeded in 408ms:
HARVESTER 56.0 Render paint-4.png
00:58.599  render           | Saved: '/root/fal-author/alien-harvester-v1/paint-4.png'
HARVESTER 58.2 Render paint-5.png
01:00.723  render           | Saved: '/root/fal-author/alien-harvester-v1/paint-5.png'
Info: Saved as "harvester-source.blend"
HARVESTER 60.4 COMPLETE

Blender quit

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/bin/bash -lc 'cp alien-harvester.glb /tmp/alien-harvester-check/alien-harvester.glb
python3 /home/claude-agent/.agents/skills/blender-game-assets/scripts/audit_glb.py alien-harvester.glb --strict' in /home/claude-agent/forge-build/forge-assets/jobs/alien-harvester-v1
 succeeded in 273ms:
{
  "file": "alien-harvester.glb",
  "sha256": "b739e838f38b22e68249cee953be5bee2a1ffeeef1c5b98602efe35023a884dd",
  "bytes": 11878984,
  "primitive_count": 30,
  "material_count": 6,
  "embedded_images": 11,
  "external_uris": [],
  "primitives": [
    {
      "mesh": "Arm_1",
      "primitive": 0,
      "triangles": 1836,
      "zero_area_triangles": 0,
      "nonfinite_attribute_components": 0
    },
    {
      "mesh": "Arm_1",
      "primitive": 1,
      "triangles": 3624,
      "zero_area_triangles": 0,
      "nonfinite_attribute_components": 0
    },
    {
      "mesh": "Arm_1",
      "primitive": 2,
      "triangles": 2536,
      "zero_area_triangles": 0,
      "nonfinite_attribute_components": 0
    },
    {
      "mesh": "Arm_1",
      "primitive": 3,
      "triangles": 1148,
      "zero_area_triangles": 0,
      "nonfinite_attribute_components": 0
    },
    {
      "mesh": "Arm_2",
      "primitive": 0,
      "triangles": 1836,
      "zero_area_triangles": 0,
      "nonfinite_attribute_components": 0
    },
    {
      "mesh": "Arm_2",
      "primitive": 1,
      "triangles": 3624,
      "zero_area_triangles": 0,
      "nonfinite_attribute_components": 0
    },
    {
      "mesh": "Arm_2",
      "primitive": 2,
      "triangles": 2536,
      "zero_area_triangles": 0,
      "nonfinite_attribute_components": 0
    },
    {
      "mesh": "Arm_2",
      "primitive": 3,
      "triangles": 1148,
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    {
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      "triangles": 3624,
      "zero_area_triangles": 0,
      "nonfinite_attribute_components": 0
    },
    {
      "mesh": "Arm_3",
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      "triangles": 1148,
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    {
      "mesh": "Arm_4",
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      "triangles": 1836,
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    },
    {
      "mesh": "Arm_4",
      "primitive": 1,
      "triangles": 3624,
      "zero_area_triangles": 0,
      "nonfinite_attribute_components": 0
    },
    {
      "mesh": "Arm_4",
      "primitive": 2,
      "triangles": 2536,
      "zero_area_triangles": 0,
      "nonfinite_attribute_components": 0
    },
    {
      "mesh": "Arm_4",
      "primitive": 3,
      "triangles": 1148,
      "zero_area_triangles": 0,
      "nonfinite_attribute_components": 0
    },
    {
      "mesh": "Arm_5",
      "primitive": 0,
      "triangles": 1836,
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    },
    {
      "mesh": "Arm_5",
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      "zero_area_triangles": 0,
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    },
    {
      "mesh": "Arm_5",
      "primitive": 2,
      "triangles": 2536,
      "zero_area_triangles": 0,
      "nonfinite_attribute_components": 0
    },
    {
      "mesh": "Arm_5",
      "primitive": 3,
      "triangles": 1148,
      "zero_area_triangles": 0,
      "nonfinite_attribute_components": 0
    },
    {
      "mesh": "Arm_6",
      "primitive": 0,
      "triangles": 1836,
      "zero_area_triangles": 0,
      "nonfinite_attribute_components": 0
    },
    {
      "mesh": "Arm_6",
      "primitive": 1,
      "triangles": 3624,
      "zero_area_triangles": 0,
      "nonfinite_attribute_components": 0
    },
    {
      "mesh": "Arm_6",
      "primitive": 2,
      "triangles": 2536,
      "zero_area_triangles": 0,
      "nonfinite_attribute_components": 0
    },
    {
      "mesh": "Arm_6",
      "primitive": 3,
      "triangles": 1148,
      "zero_area_triangles": 0,
      "nonfinite_attribute_components": 0
    },
    {
      "mesh": "Hull",
      "primitive": 0,
      "triangles": 45044,
      "zero_area_triangles": 0,
      "nonfinite_attribute_components": 0
    },
    {
      "mesh": "Hull",
      "primitive": 1,
      "triangles": 29484,
      "zero_area_triangles": 0,
      "nonfinite_attribute_components": 0
    },
    {
      "mesh": "Hull",
      "primitive": 2,
      "triangles": 30116,
      "zero_area_triangles": 0,
      "nonfinite_attribute_components": 0
    },
    {
      "mesh": "Hull",
      "primitive": 3,
      "triangles": 12044,
      "zero_area_triangles": 0,
      "nonfinite_attribute_components": 0
    },
    {
      "mesh": "Hull",
      "primitive": 4,
      "triangles": 6210,
      "zero_area_triangles": 0,
      "nonfinite_attribute_components": 0
    },
    {
      "mesh": "Hull",
      "primitive": 5,
      "triangles": 6710,
      "zero_area_triangles": 0,
      "nonfinite_attribute_components": 0
    }
  ],
  "duplicate_primitives": [],
  "note": "Mesh-local counts, before node transforms/instances. Degenerate threshold: cross-product magnitude < 1e-12 in asset units squared. Not a source-topology or visual-quality verdict.",
  "triangles": 184472,
  "zero_area_triangles": 0,
  "nonfinite_attribute_components": 0,
  "findings": []
}

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exec
/bin/bash -lc 'node /tmp/alien-harvester-check/check.cjs > /tmp/alien-harvester-check/browser.log 2>&1' in /home/claude-agent/forge-build/forge-assets/jobs/alien-harvester-v1
exec
/bin/bash -lc "timeout 240 geminix 'Independently review this real Blender asset against the reference. Open actual image files with your image tool. No edits, no agents. Reference /home/claude-agent/forge-build/forge-assets/jobs/alien-harvester-v1/sheet.jpg. Current /home/claude-agent/forge-build/forge-assets/jobs/alien-harvester-v1/final.png, close.png, side.png, paints.png, arms-test.png. Baseline previous revision /tmp/alien-harvester-review/v2/final.png and close.png (same camera and lights). Prior criticism /tmp/alien-harvester-review/review.txt. All paths with just filename are under the current asset directory above. Brief: realistic giant 420m alien harvester, organic layered dark hull, amber vents and deep maw, dorsal spines, 6 harvesting arms, no windows. Game budget 184472 triangles, 6 materials, 11.88MB GLB, tiling 1024 base and 1024 or 512 normal, 512 ORM. Return PASS, REVISE, or BLOCKED, at most five prioritized findings with actual image evidence and measurable acceptance. Mark earlier findings resolved/remaining/regressed. Be concrete and visually honest; do not demand new scope. The latest pass replaced floating cheek pipes with thick brow cowls, added belly ribs, different arm curls, bigger claws, darker scored metal, flush top vents and visible rear heat chambers. Assess the actual result rather than this description.' > /tmp/alien-harvester-review/review-v3.txt 2>&1" in /home/claude-agent/forge-build/forge-assets/jobs/alien-harvester-v1
exec
/bin/bash -lc "node - <<'JS'
const fs=require('fs'),v=require('/tmp/alien-harvester-check/node_modules/gltf-validator');v.validateBytes(new Uint8Array(fs.readFileSync('alien-harvester.glb')),{uri:'alien-harvester.glb',maxIssues:1000}).then(r=>{fs.writeFileSync('/tmp/alien-harvester-check/validator-final.json',JSON.stringify(r,null,2));console.log(JSON.stringify(r.issues));});
JS" in /home/claude-agent/forge-build/forge-assets/jobs/alien-harvester-v1
 succeeded in 422ms:
{"numErrors":13,"numWarnings":0,"numInfos":11,"numHints":0,"messages":[{"code":"UNUSED_MESH_TANGENT","message":"Tangents are not used because the material has no normal texture.","severity":2,"pointer":"/meshes/6/primitives/4/attributes/TANGENT"},{"code":"UNUSED_OBJECT","message":"This object may be unused.","severity":2,"pointer":"/meshes/6/primitives/4/attributes/TEXCOORD_0"},{"code":"UNUSED_MESH_TANGENT","message":"Tangents are not used because the material has no normal texture.","severity":2,"pointer":"/meshes/6/primitives/5/attributes/TANGENT"},{"code":"UNUSED_OBJECT","message":"This object may be unused.","severity":2,"pointer":"/meshes/6/primitives/5/attributes/TEXCOORD_0"},{"code":"NODE_EMPTY","message":"Empty node encountered.","severity":2,"pointer":"/nodes/6"},{"code":"NODE_EMPTY","message":"Empty node encountered.","severity":2,"pointer":"/nodes/7"},{"code":"NODE_EMPTY","message":"Empty node encountered.","severity":2,"pointer":"/nodes/8"},{"code":"NODE_EMPTY","message":"Empty node encountered.","severity":2,"pointer":"/nodes/9"},{"code":"NODE_EMPTY","message":"Empty node encountered.","severity":2,"pointer":"/nodes/10"},{"code":"NODE_EMPTY","message":"Empty node encountered.","severity":2,"pointer":"/nodes/11"},{"code":"NODE_EMPTY","message":"Empty node encountered.","severity":2,"pointer":"/nodes/12"},{"code":"ACCESSOR_VECTOR3_NON_UNIT","message":"Vector3 at accessor indices 40728..40730 is not of unit length: 0.","severity":0,"pointer":"/meshes/6/primitives/1/attributes/TANGENT"},{"code":"ACCESSOR_VECTOR3_NON_UNIT","message":"Vector3 at accessor indices 43624..43626 is not of unit length: 0.","severity":0,"pointer":"/meshes/6/primitives/1/attributes/TANGENT"},{"code":"ACCESSOR_VECTOR3_NON_UNIT","message":"Vector3 at accessor indices 53328..53330 is not of unit length: 0.","severity":0,"pointer":"/meshes/6/primitives/1/attributes/TANGENT"},{"code":"ACCESSOR_VECTOR3_NON_UNIT","message":"Vector3 at accessor indices 54116..54118 is not of unit length: 0.","severity":0,"pointer":"/meshes/6/primitives/1/attributes/TANGENT"},{"code":"ACCESSOR_VECTOR3_NON_UNIT","message":"Vector3 at accessor indices 56212..56214 is not of unit length: 0.","severity":0,"pointer":"/meshes/6/primitives/1/attributes/TANGENT"},{"code":"ACCESSOR_VECTOR3_NON_UNIT","message":"Vector3 at accessor indices 56324..56326 is not of unit length: 0.","severity":0,"pointer":"/meshes/6/primitives/1/attributes/TANGENT"},{"code":"ACCESSOR_VECTOR3_NON_UNIT","message":"Vector3 at accessor indices 56384..56386 is not of unit length: 0.","severity":0,"pointer":"/meshes/6/primitives/1/attributes/TANGENT"},{"code":"ACCESSOR_VECTOR3_NON_UNIT","message":"Vector3 at accessor indices 27236..27238 is not of unit length: 0.","severity":0,"pointer":"/meshes/6/primitives/2/attributes/TANGENT"},{"code":"ACCESSOR_VECTOR3_NON_UNIT","message":"Vector3 at accessor indices 76064..76066 is not of unit length: 0.","severity":0,"pointer":"/meshes/6/primitives/2/attributes/TANGENT"},{"code":"ACCESSOR_VECTOR3_NON_UNIT","message":"Vector3 at accessor indices 18228..18230 is not of unit length: 0.","severity":0,"pointer":"/meshes/6/primitives/3/attributes/TANGENT"},{"code":"ACCESSOR_VECTOR3_NON_UNIT","message":"Vector3 at accessor indices 19316..19318 is not of unit length: 0.","severity":0,"pointer":"/meshes/6/primitives/3/attributes/TANGENT"},{"code":"ACCESSOR_VECTOR3_NON_UNIT","message":"Vector3 at accessor indices 24608..24610 is not of unit length: 0.","severity":0,"pointer":"/meshes/6/primitives/3/attributes/TANGENT"},{"code":"ACCESSOR_VECTOR3_NON_UNIT","message":"Vector3 at accessor indices 32828..32830 is not of unit length: 0.","severity":0,"pointer":"/meshes/6/primitives/3/attributes/TANGENT"}],"truncated":false}

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/bin/bash -lc "python3 - <<'PY'
import json
r=json.load(open('/tmp/alien-harvester-check/report.json'));d=r['report'];print({k:d.get(k) for k in ['size','triangles','drawCalls','materials','paint']});print('errors',r['errors'])
p='build_alien-harvester.py';s=open(p).read();n=\"\"\"                packed=np.zeros((len(vals),4),dtype='<i2');packed[:,:dim]=np.rint(np.clip(vals,-1,1)*32767).astype('<i2')\"\"\";r=\"\"\"                if key=='TANGENT':
                    vals=vals.copy();bad=np.linalg.norm(vals[:,:3],axis=1)<.5
                    if bad.any():
                        na=doc['accessors'][prim['attributes']['NORMAL']];nv=doc['bufferViews'][na['bufferView']]
                        normals=np.frombuffer(binary,dtype='<f4',count=na['count']*3,offset=nv['byteOffset']).reshape(-1,3)[bad]
                        reference=np.eye(3)[np.argmin(np.abs(normals),axis=1)];fallback=np.cross(normals,reference);fallback/=np.linalg.norm(fallback,axis=1)[:,None]
                        vals[bad,:3]=fallback;vals[bad,3]=1;log('Repaired '+str(int(bad.sum()))+' collapsed UV tangent frames')
                packed=np.zeros((len(vals),4),dtype='<i2');packed[:,:dim]=np.rint(np.clip(vals,-1,1)*32767).astype('<i2')\"\"\";assert n in s;s=s.replace(n,r);open(p,'w').write(s)
PY" in /home/claude-agent/forge-build/forge-assets/jobs/alien-harvester-v1
 succeeded in 0ms:
{'size': [160.00000762939453, 119.9929428100586, 420.0021209716797], 'triangles': 184472, 'drawCalls': 30, 'materials': ['Paint', 'Titanium', 'HeatScorched', 'Recess', 'Lamps', 'Engines'], 'paint': [0.1, 0.11, 0.1]}
errors []

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/bin/bash -lc 'cat /tmp/alien-harvester-review/review-v3.txt' in /home/claude-agent/forge-build/forge-assets/jobs/alien-harvester-v1
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/bin/bash -lc 'tail -n 55 /tmp/alien-harvester-review/review-v3.txt' in /home/claude-agent/forge-build/forge-assets/jobs/alien-harvester-v1
 succeeded in 0ms:
**Verdict: REVISE**

Compared [sheet.jpg](file:///home/claude-agent/forge-build/forge-assets/jobs/alien-harvester-v1/sheet.jpg) against current [final.png](file:///home/claude-agent/forge-build/forge-assets/jobs/alien-harvester-v1/final.png), [close.png](file:///home/claude-agent/forge-build/forge-assets/jobs/alien-harvester-v1/close.png), [side.png](file:///home/claude-agent/forge-build/forge-assets/jobs/alien-harvester-v1/side.png), [paints.png](file:///home/claude-agent/forge-build/forge-assets/jobs/alien-harvester-v1/paints.png), [arms-test.png](file:///home/claude-agent/forge-build/forge-assets/jobs/alien-harvester-v1/arms-test.png), baseline [v2/final.png](file:///tmp/alien-harvester-review/v2/final.png), [v2/close.png](file:///tmp/alien-harvester-review/v2/close.png), and [review.txt](file:///tmp/alien-harvester-review/review.txt).

### Status of Prior Findings ([review.txt](file:///tmp/alien-harvester-review/review.txt))

| Prior # | Area | Status | Visual Evidence (v2 vs Current) |
| :--- | :--- | :--- | :--- |
| **1** | **Silhouette & Hull Profile** | **Remaining** (belly ribs added, profile still flat) | [side.png](file:///home/claude-agent/forge-build/forge-assets/jobs/alien-harvester-v1/side.png) adds 6 forward belly segments, but the top and bottom hull lines remain horizontal and parallel from snout to tail with no mid-body dorsal arch or neck taper. |
| **2** | **Panel Construction & Greebles** | **Remaining / Regressed** | Smooth cheek pipes from [v2/close.png](file:///tmp/alien-harvester-review/v2/close.png) are gone, but the blocky tan latch pads on seams remain, the new snout cowl in [close.png](file:///home/claude-agent/forge-build/forge-assets/jobs/alien-harvester-v1/close.png) has wavy/pinched shading on its upper lip, and the new belly ribs curl out like thin peeling flaps over open black gaps. |
| **3** | **Glowing Maw & Side Vents** | **Partially Resolved** | Rear thruster heat chambers now glow and upper small vents sit flush ([final.png](file:///home/claude-agent/forge-build/forge-assets/jobs/alien-harvester-v1/final.png) vs [v2/final.png](file:///tmp/alien-harvester-review/v2/final.png)). Side vents still use tangled criss-cross cage bars, and the maw is still a bright peach radial ring around a dark hole. |
| **4** | **Material Realism & Dorsal Spines** | **Partially Resolved / Regressed** | Hull metal in [close.png](file:///home/claude-agent/forge-build/forge-assets/jobs/alien-harvester-v1/close.png) is darker with directional scoring (replacing v2 stucco), and paint variants in [paints.png](file:///home/claude-agent/forge-build/forge-assets/jobs/alien-harvester-v1/paints.png) hold up well. However, spine base rings were deleted so dorsal spines now clip straight through flat hull plates ([final.png](file:///home/claude-agent/forge-build/forge-assets/jobs/alien-harvester-v1/final.png)). |
| **5** | **Arm Sockets, Poses & Claws** | **Partially Resolved** | Arms now have varied poses per pair and larger 3-prong claws ([side.png](file:///home/claude-agent/forge-build/forge-assets/jobs/alien-harvester-v1/side.png), [arms-test.png](file:///home/claude-agent/forge-build/forge-assets/jobs/alien-harvester-v1/arms-test.png)), but still plug into plain squashed black balls and look thin and rigid (especially the straight rear pair). |

### Top 5 Prioritized Findings

| Priority | Area | Visual Evidence | Measurable Acceptance Criteria |
| :--- | :--- | :--- | :--- |
| **1** | **Cigar Silhouette vs Hunched Leviathan** | In [side.png](file:///home/claude-agent/forge-build/forge-assets/jobs/alien-harvester-v1/side.png), the hull roof and belly form a straight cylinder of uniform height from nose to tail. [sheet.jpg](file:///home/claude-agent/forge-build/forge-assets/jobs/alien-harvester-v1/sheet.jpg) has a swollen mid-body dorsal hump under the spines, a narrower neck behind the maw, and a tapered tail cone. | In [side.png](file:///home/claude-agent/forge-build/forge-assets/jobs/alien-harvester-v1/side.png), raise the mid-body dorsal arch so mid-hull thickness is 25% to 30% greater than the neck section behind the maw and the tail assembly. |
| **2** | **Peeling Belly Flaps, Pinched Nose Cowl & Leftover Seam Blocks** | In [close.png](file:///home/claude-agent/forge-build/forge-assets/jobs/alien-harvester-v1/close.png), the new snout cowl has lumpy, pinched normal/topology distortion near the top-left rim; the 6 ventral belly ribs are paper-thin sheets curling away from the hull over empty black gaps; and the square tan latch blocks with orange slots from v2 still sit across the panel seams. | Solidify ventral ribs and nose cowls to >=0.8m wall thickness so no backfaces or open gaps show in [close.png](file:///home/claude-agent/forge-build/forge-assets/jobs/alien-harvester-v1/close.png), fix the pinched shading on the upper snout lip, and delete all protruding square tan seam blocks. |
| **3** | **Tangled Side Vent Grates & Flat Maw Ring** | In [final.png](file:///home/claude-agent/forge-build/forge-assets/jobs/alien-harvester-v1/final.png) and [side.png](file:///home/claude-agent/forge-build/forge-assets/jobs/alien-harvester-v1/side.png), the two main side vents have thin, overlapping diagonal bars that look like a tangled wire cage. In [close.png](file:///home/claude-agent/forge-build/forge-assets/jobs/alien-harvester-v1/close.png), the maw is an unshaded peach-orange fin ring around a dark throat, missing the heavy side cheek pods and glowing inner core of [sheet.jpg](file:///home/claude-agent/forge-build/forge-assets/jobs/alien-harvester-v1/sheet.jpg). | Replace the crossed side vent bars with 4 to 5 parallel, thick angled armor louvers per vent. Darken the outer maw teeth to gunmetal/scorched metal, place the bright amber glow behind them inside the throat, and flare the side cheek cowls outward. |
| **4** | **Stiff Arm Segments & Plain Ball Sockets** | In [side.png](file:///home/claude-agent/forge-build/forge-assets/jobs/alien-harvester-v1/side.png) and [arms-test.png](file:///home/claude-agent/forge-build/forge-assets/jobs/alien-harvester-v1/arms-test.png), the rear arm pair is a nearly straight diagonal pipe with a small wrist hook, arm thickness is roughly half of [sheet.jpg](file:///home/claude-agent/forge-build/forge-assets/jobs/alien-harvester-v1/sheet.jpg), and all 6 arms attach via plain black spheres on a flat belly strip. | Add a real S-curve bend to the rear arm pair, increase upper-arm diameter by 35% to 50% tapering toward the wrist, and surround each ball joint with an armored collar ring recessed into the ventral hull. |
| **5** | **Clipping Dorsal Spines & Uniform Material Value** | Removing the v2 base rings left all dorsal spines in [final.png](file:///home/claude-agent/forge-build/forge-assets/jobs/alien-harvester-v1/final.png) and [side.png](file:///home/claude-agent/forge-build/forge-assets/jobs/alien-harvester-v1/side.png) intersecting directly into flat hull plates. Hull plates, rib straps, and snout share one uniform dark value with no heat-scorch darkening around vents or bare-metal edge contrast. | Seat each dorsal spine into a raised dorsal ridge or beveled collar socket (no raw mesh intersection), and add visible heat-scorched darkening/soot gradients around the maw, side vents, and rear heat chambers. |

***

0. **Blocked on you**: nothing.
1. **What you changed**: nothing (read-only visual review).
2. **How you know it works**: inspected [sheet.jpg](file:///home/claude-agent/forge-build/forge-assets/jobs/alien-harvester-v1/sheet.jpg), current [final.png](file:///home/claude-agent/forge-build/forge-assets/jobs/alien-harvester-v1/final.png), [close.png](file:///home/claude-agent/forge-build/forge-assets/jobs/alien-harvester-v1/close.png), [side.png](file:///home/claude-agent/forge-build/forge-assets/jobs/alien-harvester-v1/side.png), [paints.png](file:///home/claude-agent/forge-build/forge-assets/jobs/alien-harvester-v1/paints.png), [arms-test.png](file:///home/claude-agent/forge-build/forge-assets/jobs/alien-harvester-v1/arms-test.png), baseline [v2/final.png](file:///tmp/alien-harvester-review/v2/final.png), [v2/close.png](file:///tmp/alien-harvester-review/v2/close.png), and [review.txt](file:///tmp/alien-harvester-review/review.txt) directly with the image viewer.
3. **What would break if you were wrong**: shipping this revision leaves a flat cylinder silhouette, paper-thin peeling belly plates, pinched nose shading, and criss-cross vent bars visible in close and side views.
4. **What you did NOT do**: did not inspect the `.blend` or `.glb` files, triangle/material counts, or UV maps, and made no edits.

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/bin/bash -lc 'df -h /home/claude-agent/forge-build/forge-assets/jobs/alien-harvester-v1' in /home/claude-agent/forge-build/forge-assets/jobs/alien-harvester-v1
 succeeded in 0ms:
Filesystem      Size  Used Avail Use% Mounted on
/dev/sda1       150G  137G  7.1G  96% /

codex
The exported model loads correctly at 184,472 triangles and 11.88 MB. Close-up review still shows uneven shading on the nose and thin-looking belly armour. I’m correcting those, thickening the arm roots, and simplifying the vent louvers. Validation also found a few invalid tangent vectors that need repair before delivery.

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/bin/bash -lc "cat > /tmp/alien-harvester-check/final-corrections.py <<'PY'
from pathlib import Path
p=Path('/home/claude-agent/forge-build/forge-assets/jobs/alien-harvester-v1/build_alien-harvester.py');s=p.read_text()
s=s.replace('# Revision budget: 3.', '# Revision budget: bounded by the user\\'s 80-minute authoring window.')
s=s.replace(\"('Lamps',(1,.235,.018,1),2.0),('Engines',(1,.32,.035,1),2.1)\",\"('Lamps',(1,.15,.008,1),2.3),('Engines',(1,.22,.018,1),2.2)\")
s=s.replace(\"(-158,43,31,2),(-112,51,33,3),(-55,55,32,3),(0,55,30,2),(55,51,28,2),(105,43,25,1)\",\"(-158,43,28,2),(-112,51,35,3),(-55,55,40,4),(0,55,40,4),(55,51,34,3),(105,43,28,1)\")
s=s.replace(\"nu=8;nv=10;vs=[]\", \"nu=10;nv=12;vs=[]\")
s=s.replace(\"else offset-1.0\", \"else (-.7 if offset>=3 else offset-1.0)\")
# Avoid angular perturbations on nose cowls and reinforcements, which otherwise pinch the front rim.
s=s.replace(\"+.042*math.sin(u*math.pi)*(1 if ta+tb>0 else -1)\",\"+(.018 if ya<-200 else .042)*math.sin(u*math.pi)*(1 if ta+tb>0 else -1)\")
s=s.replace(\"bulge=1.0*math.sin(u*math.pi)*math.sin(v*math.pi)\", \"bulge=(.3 if ya<-200 else 1.0)*math.sin(u*math.pi)*math.sin(v*math.pi)\")
a=s.index('        # Structural separators make this a vent rather than glazing.')
b=s.index('    for yy in [cy-L*.28,cy+L*.27]:',a)
s=s[:a]+\"\"\"    # Four parallel inclined armoured louvers, all sharing the same angle and height.
    for k in range(4):
        yy=cy+(k-1.5)*L*.145;hh=H*.245
        axis=Vector((0,3.8,2*hh)).normalized();depth=Vector((sign,0,0));across=axis.cross(depth).normalized()
        B=Matrix(((depth.x,across.x,axis.x),(depth.y,across.y,axis.y),(depth.z,across.z,axis.z)))
        rounded_box(h,(sign*(cx+5.0),yy,cz),(1.85,2.4,2*hh+1),0,.55,B)
\"\"\"+s[b:]
s=s.replace(\"tube(h,pts,[.7,.92,.88,.72,.45,.17],4,7)\",\"\"\"tube(h,pts,[.90,1.05,.98,.81,.54,.23],2,9)
    lit=[Vector(p)+Vector((-.16*math.cos(t),-.72,-.16*math.sin(t))) for p in pts]
    tube(h,lit,[.29,.46,.44,.38,.24,.08],4,7)\"\"\")
s=s.replace(\"# Heavy overhanging brow\", \"ring(h,(0,-178.8,0),(0,1,0),14.2,.42,4,64,6,.89)\\n# Heavy overhanging brow\")
s=s.replace(\"tube(h,pts,rr,2,10,.66);ellipsoid(h,base,(5.3,7.8,2.8),0,18,8)\",\"\"\"tube(h,pts,rr,2,10,.66);ellipsoid(h,base,(5.3,7.8,2.8),0,18,8)
        ring(h,base+Vector((0,0,1.8)),(0,0,1),4.1,.6,2,24,7,1.25)\"\"\")
s=s.replace(\"y+(10 if side<0 else 0)\", \"y+(24 if side<0 else 0)\")
s=s.replace(\"ring(h,root,(0,0,1),7.4,1.1,2,40,8)\",\"\"\"axis=Vector((side*.45,0,-.89)).normalized()
        ring(h,root+axis*1.0,axis,8.3,1.55,0,40,8)
        ring(h,root+axis*2.0,axis,7.3,.8,2,32,8)\"\"\")
s=s.replace(\"rr=[4.8*(1-i/(N-1))+.95\", \"rr=[6.5*(1-i/(N-1))+.95\")
s=s.replace(\"[6,20,36,45,37]\", \"[6,25,39,42,28]\")
s=s.replace(\"points=[root]+[root+Vector((side*x,dy,dz)) for x,dy,dz in curl]\", \"\"\"if j==2:curl=[(5,dy[0],-12),(13,dy[1],-23),(28,dy[2],-34),(28,dy[3],-48),(14,dy[4],-59)]
        points=[root]+[root+Vector((side*x,dy,dz)) for x,dy,dz in curl]\"\"\")
s=s.replace(\"rounded_box(h,p,(6.5,8.6,1),2,.55,B)\",\"rounded_box(h,p,(2.5,3.3,.35),3,.18,B)\")
s=s.replace(\"rounded_box(h,p+n*.55,(4.9,6.6,.7),0,.45,B)\",\"rounded_box(h,p+n*.2,(2.15,2.8,.25),0,.13,B)\")
s=s.replace(\"for aa in [-2.4,2.4]:\", \"for aa in [-.9,.9]:\")
s=s.replace(\"for bb in [-3.35,3.35]:\", \"for bb in [-1.15,1.15]:\")
s=s.replace(\"q=p+a*aa+b*bb+n*.8;tube(h,[q,q+n*.18],.22,1,8)\", \"q=p+a*aa+b*bb+n*.35;tube(h,[q,q+n*.10],.12,1,7)\")
s=s.replace(\"q=p+n*.95+b*(-1.5);rounded_box(h,q,(2.3,.44,.25),4,.10,B)\", \"q=p+n*.4+b*(-.7);rounded_box(h,q,(.7,.14,.12),4,.045,B)\")
s=s.replace(\"    me=ob.data;uv=me.uv_layers.active\", \"\"\"    if ob==hull:
        weighted=ob.modifiers.new('Area weighted armour shading','WEIGHTED_NORMAL');weighted.keep_sharp=True;weighted.mode='FACE_AREA_WITH_ANGLE';weighted.weight=35
        bpy.ops.object.modifier_apply(modifier=weighted.name)
    me=ob.data;me.update();uv=me.uv_layers.active\"\"\")
s=s.replace(\"pos=(620,-460,235)\", \"pos=(620,-460,180)\")
s=s.replace(\"empty('Light_Nav_L',(58,5,1));empty('Light_Nav_R',(-58,5,1));empty('Light_Beacon',(0,34,35))\", \"\"\"empty('Light_Nav_L',(63,5,1))['color']=[1.0,0.0,0.0];empty('Light_Nav_R',(-63,5,1))['color']=[0.0,1.0,0.0];empty('Light_Beacon',(0,34,50))['color']=[1.0,.12,.0]\"\"\")
p.write_text(s)
PY
mkdir -p /tmp/alien-harvester-review/v3
cp build_alien-harvester.py /tmp/alien-harvester-check/build-v3.py
cp final.png close.png side.png nodes.json /tmp/alien-harvester-review/v3/
python3 /tmp/alien-harvester-check/final-corrections.py
python3 -m py_compile build_alien-harvester.py
scp build_alien-harvester.py gex44:/root/fal-author/alien-harvester-v1/build_alien-harvester.py" in /home/claude-agent/forge-build/forge-assets/jobs/alien-harvester-v1
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/bin/bash -lc "ssh gex44 '/root/blender-spike/blender-5.2.0-linux-x64/blender -b --python-exit-code 1 --python /root/fal-author/alien-harvester-v1/build_alien-harvester.py > /root/fal-author/alien-harvester-v1/build.log 2>&1'" in /home/claude-agent/forge-build/forge-assets/jobs/alien-harvester-v1
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/bin/bash -lc 'ssh gex44 tail -n 12 /root/fal-author/alien-harvester-v1/build.log' in /home/claude-agent/forge-build/forge-assets/jobs/alien-harvester-v1
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/bin/bash -lc "cat > /tmp/alien-harvester-check/contract.py <<'PY'
from pathlib import Path
from PIL import Image
import io,json,struct
root=Path('/home/claude-agent/forge-build/forge-assets/jobs/alien-harvester-v1')
b=(root/'alien-harvester.glb').read_bytes();n=struct.unpack_from('<I',b,12)[0];d=json.loads(b[20:20+n]);binary=b[28+n:]
assert len(b)<=12_000_000
assert not d.get('cameras') and not d.get('extensions',{}).get('KHR_lights_punctual')
assert len(d['materials'])<=9
expected={'Hull',*[f'Arm_{i}' for i in range(1,7)],*[f'Thruster_{i}' for i in range(1,4)],'Camera_Chase','Light_Nav_L','Light_Nav_R','Light_Beacon'}
assert {x['name'] for x in d['nodes']}==expected
assert len(d['meshes'])==7
paint=next(m for m in d['materials'] if m['name']=='Paint');assert paint['pbrMetallicRoughness']['baseColorFactor']==[.1,.11,.1,1]
assert {'Engines','Lamps'}.issubset({m['name'] for m in d['materials']})
images=[]
for im in d['images']:
 v=d['bufferViews'][im['bufferView']];imdata=binary[v['byteOffset']:v['byteOffset']+v['byteLength']];pil=Image.open(io.BytesIO(imdata));w,h=pil.size;limit=512 if 'ORM' in im['name'] else 1024;assert max(w,h)<=limit
 images.append([im['name'],w,h,len(imdata)])
nodeinfo=json.loads((root/'nodes.json').read_text());assert set(nodeinfo['nodes'])==expected
for node in d['nodes']:
 name=node['name'];assert node.get('scale',[1,1,1])==[1,1,1]
 assert max(abs(a-b) for a,b in zip(node.get('translation',[0,0,0]),nodeinfo['nodes'][name]['position']))<1e-4
 if name.startswith('Arm_'): assert nodeinfo['axes'][name]==[0,0,1] and 'mesh' in node
 elif name"'!='"'Hull':assert 'mesh' not in node
assert 80000<=nodeinfo['triangles']<=200000
assert len((root/'NOTES.md').read_text().splitlines())==6
assert Image.open(root/'final.png').size==(1920,1080)
assert Image.open(root/'clay.png').size==(1920,1080)
assert Image.open(root/'paints.png').size==(1920,720)
print(json.dumps({'status':'PASS','bytes':len(b),'triangles':nodeinfo['triangles'],'materials':len(d['materials']),'nodes':len(d['nodes']),'images':images,'bbox':nodeinfo['bounding_box']},indent=2))
PY" in /home/claude-agent/forge-build/forge-assets/jobs/alien-harvester-v1
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/bin/bash -lc 'ssh gex44 tail -n 18 /root/fal-author/alien-harvester-v1/build.log' in /home/claude-agent/forge-build/forge-assets/jobs/alien-harvester-v1
 succeeded in 456ms:
codex
The rebuild is waiting for the remote GPU slot. The previous export passed mesh-integrity checks and loaded without browser errors; the updated validation will check the repaired tangent vectors and final file size.

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/bin/bash -lc "ssh gex44 'ps -eo pid,etime,args | grep -E \"alien-harvester-v1|gpu_gate|blender -b\" | grep -v grep | head -n 18'" in /home/claude-agent/forge-build/forge-assets/jobs/alien-harvester-v1
 succeeded in 495ms:
3934087       01:30 bash -c /root/blender-spike/blender-5.2.0-linux-x64/blender -b --python-exit-code 1 --python /root/fal-author/alien-harvester-v1/build_alien-harvester.py > /root/fal-author/alien-harvester-v1/build.log 2>&1
3934088       01:30 python3 /opt/gpu-gate/gpu_gate.py --name blender --need-mib 6000 --priority batch -- /root/blender-spike/blender-5.2.0-linux-x64/blender.real -b --python-exit-code 1 --python /root/fal-author/alien-harvester-v1/build_alien-harvester.py
3936768       00:53 python3 /opt/gpu-gate/gpu_gate.py --name blender --need-mib 6000 --priority batch -- /root/blender-spike/blender-5.2.0-linux-x64/blender.real -b --python-exit-code 1 --python /root/fal-author/interceptor-hardsf-v1/build_interceptor-hardsf.py
3936988       00:52 bash -c /root/blender-spike/blender-5.2.0-linux-x64/blender -b --python-exit-code 1 --python /root/fal-author/heavy-bomber-opera-v1/build_heavy-bomber-opera.py > /root/fal-author/heavy-bomber-opera-v1/build-delivery.log 2>&1
3936989       00:52 python3 /opt/gpu-gate/gpu_gate.py --name blender --need-mib 6000 --priority batch -- /root/blender-spike/blender-5.2.0-linux-x64/blender.real -b --python-exit-code 1 --python /root/fal-author/heavy-bomber-opera-v1/build_heavy-bomber-opera.py
3940404       00:05 python3 /opt/gpu-gate/gpu_gate.py --name blender --need-mib 6000 --priority batch -- /root/blender-spike/blender-5.2.0-linux-x64/blender.real -b --python-exit-code 1 --python /root/fal-author/science-explorer-v1/build_science-explorer.py

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/bin/bash -lc 'ls -lh' in /home/claude-agent/forge-build/forge-assets/jobs/alien-harvester-v1
 succeeded in 1ms:
total 23M
-rw-r--r-- 1 claude-agent claude-agent  924 Oct 16 19:02 NOTES.md
-rw-rw-r-- 1 claude-agent claude-agent 7.4K Oct 16 18:39 PROMPT.txt
drwxrwxr-x 2 claude-agent claude-agent 4.0K Oct 16 19:06 __pycache__
-rw-r--r-- 1 claude-agent claude-agent  12M Oct 16 19:02 alien-harvester.glb
-rw-r--r-- 1 claude-agent claude-agent 968K Oct 16 19:02 arms-test.png
-rw-rw-r-- 1 claude-agent claude-agent 323K Oct 16 19:08 astra.log
-rw-rw-r-- 1 claude-agent claude-agent  47K Oct 16 19:06 build_alien-harvester.py
-rw-r--r-- 1 claude-agent claude-agent 2.1M Oct 16 19:02 clay.png
-rw-r--r-- 1 claude-agent claude-agent 1.1M Oct 16 19:02 close.png
-rw-r--r-- 1 claude-agent claude-agent 2.1M Oct 16 19:02 final.png
-rw-rw-r-- 1 claude-agent claude-agent 5.1K Oct 16 18:37 job.json
-rw-r--r-- 1 claude-agent claude-agent 4.0K Oct 16 19:02 nodes.json
-rw-r--r-- 1 claude-agent claude-agent 1.5M Oct 16 19:02 paints.png
-rw-rw-r-- 1 claude-agent claude-agent 827K Oct 16 18:34 sheet.jpg
-rw-rw-r-- 1 claude-agent claude-agent  909 Oct 16 18:37 sheet_prompt.txt
-rw-r--r-- 1 claude-agent claude-agent 2.1M Oct 16 19:02 side.png
-rw-rw-r-- 1 claude-agent claude-agent   21 Oct 16 18:39 started.txt

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/bin/bash -lc 'cat /home/claude-agent/.agents/skills/blender-game-assets/reference/asset-delivery.md | head -n 100' in /home/claude-agent/forge-build/forge-assets/jobs/alien-harvester-v1
 succeeded in 0ms:
<!-- Ported from vercel-labs/vgpu skills/vgpu/blender/references/asset-delivery.md at commit 68cb1d8d198c (MIT, Copyright (c) 2025 Vercel, Inc.). Adapted for Forge: three.js runtime instead of vgpu/WebGPU, links rerouted. Upstream text otherwise kept so a re-sync stays diffable. -->

# Asset delivery: texture formats, geometry and first frame

Use this reference when selecting export formats or investigating slow loading, large downloads or texture memory. Choose for the actual target importer and devices. A file extension is not a performance measurement.

## Separate the costs

Record **encoded response bytes**, decoded CPU allocations and **actual uploaded GPU formats/mips** separately. Measure navigation to first useful rendered frame and input readiness, not just the loading indicator. Inspect the dependency waterfall: deferred imports, manifests, model fetches, texture requests, decode/transcode, mip generation, buffer packing, pipeline creation and environment generation. A smaller texture does not fix requests started one at a time.

Use production builds, matched cameras/quality and several trials. Declare HTTP-cache policy, throttling, browser/GPU and whether OS, shader and CDN caches were controlled. Loading tests on an otherwise busy workstation have limited timing precision. Compare equal workloads; do not call a low-resolution placeholder the full-quality result.

## Texture delivery choices

KTX/KTX2 are **containers**. Distinguish their stored codec, supercompression and final GPU format. Zstd compresses transport/storage; it does not make RGBA8 into a GPU block format. Browser image decoders normally produce uncompressed pixels too.

| Delivery | Download and startup tradeoff | GPU residency | Suitable use and acceptance checks |
| --- | --- | --- | --- |
| PNG | Lossless at its stored bit depth; noisy maps may be large. Built-in image decode; ordinary browser loading has no supplied mip pyramid. | Depends on upload, commonly RGBA8; grayscale PNG alone does not guarantee R8. | Lossless interchange, simple delivery, masks or masters when stored precision suffices. Measure decode, color conversion and mip creation. Preserve float/16-bit masters when exporting 8-bit delivery. |
| Lossless WebP | Can beat 8-bit PNG substantially, but measure the actual maps. WebP is 8-bit; it cannot losslessly preserve 16-bit PNG. Browser decode and mip work remain. | Same as the equivalent PNG upload. | Lower download cost without intentional pixel loss. Verify decoded channels, alpha and color handling; preserve RGB under transparent pixels (e.g. `cwebp -exact`) when meaningful. Standard glTF needs importer support for `EXT_texture_webp` and correct fallback/required declarations. |
| Lossy WebP, JPEG or AVIF | Often small for photographic color; quality and decode cost depend on encoder, settings and device. Chroma subsampling can damage independent data channels. | Generally uncompressed after browser decode; file savings do not imply VRAM savings. | Test diffuse color/backgrounds against the required close-up. JPEG has no alpha. Do not default to lossy image codecs for normals, packed material data, contact AO or precision fields. glTF support differs by format/extension. |
| KTX1 (`.ktx`) | Native-format texture container with mip levels; useful for an existing fixed-platform pipeline. | Determined by contained raw or block format. | Preserve when an established importer needs it. For new portable supercompressed delivery evaluate KTX2; KTX1 and KTX2 are not interchangeable files. |
| KTX2 raw R/RG/RGBA + Zstd | Lossless relative to stored texels; offline mips remove runtime filtering. Inflation still costs CPU and staging memory; raw data can remain large. | Uncompressed R8, RG8, RGBA8, float, etc. | Exact scalar maps, normal fields, fallback delivery and formats requiring specific precision. Select channels explicitly; validate metadata, mips and decoded byte counts. |
| KTX2 ETC1S + BasisLZ | Usually prioritizes small transmission size; codebook/block approximation can affect detail and gradients. Needs a compatible transcoder. | The chosen BC/ETC/ASTC target, or uncompressed fallback; not the BasisLZ file size. | Candidate for color where errors are acceptable. Test fine masonry/text, dark gradients, alpha and target transcodes. Do not assume it preserves unrelated packed channels or sensitive normals. |
| KTX2 UASTC LDR 4×4 + optional Zstd/RDO | Usually trades more bytes for higher fidelity than ETC1S. RDO changes quality/size; Zstd alone is lossless over encoded blocks. Requires inflation/transcoding and decoder payload. | Final target, often BC7/ASTC 4×4; specialized channel targets only when the transcoder and swizzle contract support them. | Strong candidate for hero color, normal and material maps; still lossy. Validate decoded normal angular error, scalar error, mip seams and actual target-GPU renders. Compare total startup including WASM initialization. |
| Native BCn/ETC2/EAC/ASTC in KTX2 | Offline encoding; no universal-codec transcode when hardware supports the exact format. Optional supercompression still needs inflation. Multiple variants increase storage and cache complexity. | Fixed block size; e.g. BC4 4 bpp, BC5/BC7 8 bpp; ASTC rate varies by block footprint. | Known device fleets or negotiated variants. Query and request the actual WebGPU feature; provide a supported fallback. Never choose solely from OS/browser names. |

These are candidate-selection rules, not universal rankings or fixed compression ratios. New Basis modes, HDR codecs and extensions need explicit encoder, decoder, importer and device-version checks; support for UASTC LDR does not imply support for every newer mode.

For glTF, `KHR_texture_basisu` defines a specific KTX2 subset. An arbitrary raw-Zstd KTX2 is **not** automatically a compliant BasisU texture. External application maps can use a separate explicit contract. Test the final exported file in the target loader instead of merely renaming PNG to `.ktx2`.

### Channels, color and mipmaps

- Base color/emission usually use sRGB storage/sampling; AO, normals, roughness, metallic and scalar fields are linear. Declare lightmap radiometry and dynamic range: do not clamp HDR bakes into LDR merely to use an LDR codec.
- Preserve the decoder/swizzle contract for two-channel normals, including Y convention and Z reconstruction. Compare angular errors after the actual final transcode, not just intermediate KTX extraction to RGBA.
- Filter color in linear light, scalar fields as scalars and normals as vectors. Keep alpha edges and mip gutters valid; check highlight stability and roughness response during motion.
- Pack channels only when UVs, resolution, wrapping, filtering and lifetime are compatible. Independent data channels may need different compression quality.
- Include the entire mip chain in size comparisons. A base-only WebP versus a KTX2 with mips is not an equal payload comparison. Offline mips may trade extra bytes for less startup work.

### GPU memory examples

For a 2048×2048 texture with full square mips, R8 is about **5.33 MiB**, RG8 **10.67 MiB**, RGBA8 **21.33 MiB**, BC4 **2.67 MiB**, and BC5/BC7/ASTC 4×4 **5.33 MiB**. Small block-rounded tail mips add a few bytes. These are format-layout estimates, not total application/device allocations.

Use the exact sum per mip: `ceil(width / blockWidth) × ceil(height / blockHeight) × bytesPerBlock`. Raw formats use 1×1 blocks and their bytes per texel. Count arrays/faces and resident variants, staging buffers and replacement overlap separately. An RGBA fallback can erase the expected compression saving.

In three.js, KTX2 needs `KTX2Loader` with its Basis transcoder files served by the app, `ktx2Loader.detectSupport(renderer)` called before the first load, and the loader registered on `GLTFLoader` (`setKTX2Loader`); meshopt needs `setMeshoptDecoder`, Draco needs `DRACOLoader`. The transcode target comes from what the device exposes (WebGL: `WEBGL_compressed_texture_s3tc` / `_etc` / `_astc`, `EXT_texture_compression_bptc`; WebGPU: the `texture-compression-*` features). With none available the loader falls back to uncompressed RGBA and the memory saving is gone: read the loaded texture's actual `format` on the target device instead of assuming. The transcoder and decoders are extra downloads and startup work; count them.

## Make the model smaller without losing its structure

Inspect GLB chunks and classify geometry, embedded images, unused data and metadata before calling the entire file “the mesh”. Count exported vertices after UV/normal/material splits, not just Blender's edit-mode vertices or triangles.

After replacing exported attributes or externalizing images, check for abandoned accessors and buffer views before measuring the final download. Compression can preserve these unused intermediate arrays. Prune only after accounting for all references, including animation, skins and extensions; then decode the packaged file and verify the retained attributes and triangle-corner correspondence. Keep this packaging cleanup separate from topology reduction.

| Change | Potential saving | What to preserve or revalidate |
| --- | --- | --- |
| Externalize shared textures; stop fetching overridden fallback images | Download bytes, LOD-switch cache reuse | Keep portable references valid and sampling/UV bindings unchanged. A fallback is not removed if its bytes still ship inside the eagerly fetched GLB. Use content identity for sharing. External image dependencies make the GLB non-self-contained; retain a self-contained interchange copy when needed. |
| Remove unused attributes and inaccessible surfaces | Geometry/storage/upload | Verify every runtime pass and alternate view, including shadows/reflections. Removing per-face data can change sharing or bake correspondence. |
| Deduplicate vertices | Attribute bytes | Match **all used attributes**, including UV seams, hard normals and custom fields. Coincident positions alone are insufficient. Measure: already split meshes may have little exact duplication. |
| Meshopt entropy compression | Transport | Separate codec from quantization, reordering and simplification. The codec can be lossless; a full optimization preset need not be. Check decoder version and measured decode cost. |
| Quantize positions/normals/UVs or use attribute filters | Transport; GPU memory only if retained in GPU layout | Choose precision from object extent, closest view and bake texel density. Measure displacement, normal angular error and UV error in texels. UVs outside [0,1] need range-aware precision. Re-expanding to float on upload loses the vertex-memory benefit. |
| Cache/fetch reordering | Vertex processing and compression | Preserve triangle winding and every attribute association. Ordered UV hashes may change despite equivalent geometry: prove the remapping before updating bindings. |
| Simplify or author a lighter LOD | Geometry and shading | Preserve silhouette, openings, stairs, shore contacts, thin supports and map seams. Review actual near/rear/shadow views; address bake dependencies. A smaller LOD still costs startup if both versions are fetched eagerly. |
| Instance repeated modules | Repeated geometry/storage | Keep transforms, bounds, material variation and unique lighting UV requirements. Repeated geometry with different baked lightmaps may not share the whole mesh/material instance contract. |
| Draco | Alternative geometry transmission codec | Benchmark the complete chosen encoder/decoder against meshopt on these assets. Account for quantization, reconstructed attributes, ordering, WASM payload and peak memory. Neither codec is universally smallest or fastest. |

Do not apply `gltfpack`/optimizer defaults blindly to a baked scene: presets may quantize, merge, reorder, simplify or remove attributes. Export a candidate, inventory its required extensions and verify decoded geometry/UV correspondence and importer support. A small theoretical UV error does not by itself certify seam safety.

## Loading and acceptance

1. Preserve an input revision or lossless authoring export and record tool versions/options. Use separate candidates; never overwrite the only source to make a size chart.
2. Remove redundant transfers and fetch dependency stalls before introducing lossy codecs. Start independent downloads with a bounded concurrency and handle failed/cancelled requests; keep GPU error scopes and resource lifetime correct.
3. Reuse resources by content and sampling identity. Cache immutable content-addressed assets separately from mutable manifests. Avoid accidentally fetching both old and new variants.
4. For a progressive tier, measure placeholder, useful interactive scene and final-quality readiness independently. Bound simultaneous LOD/texture memory and make promotion safe during user input.
5. Compare matched hero, rear and detail renders, AO/normal/lightmap toggles, LOD switching and motion. Evaluate image error, normal angle or scalar error alongside visual inspection; no single metric certifies quality.
6. Accept only measured improvements to the task's cost/quality budget. Report file/response bytes, CPU decode/mip/upload timing, memory and first frame separately, with untested devices/fallbacks explicit.

## Primary references

Check current tool versions rather than copying a command for a different encoder release:

- [Khronos KTX2 specification](https://registry.khronos.org/KTX/specs/2.0/ktxspec.v2.html): container, metadata, levels and supercompression.
- [KTX-Software tools](https://github.com/KhronosGroup/KTX-Software): `ktx create`, validation, transcode and extraction. Inspect installed `--help` for format and normal-map options.
- [Basis Universal](https://github.com/BinomialLLC/basis_universal): codecs, transcoder targets and current version limits.
- [glTF texture extensions](https://github.com/KhronosGroup/glTF/tree/main/extensions/2.0): `KHR_texture_basisu`, `EXT_texture_webp`, `KHR_mesh_quantization`, `EXT_meshopt_compression` and `KHR_draco_mesh_compression` contracts.
- [three.js KTX2Loader](https://threejs.org/docs/#examples/en/loaders/KTX2Loader) and [GLTFLoader](https://threejs.org/docs/#examples/en/loaders/GLTFLoader): transcoder setup, support detection and the decoder hooks.
- [WebGPU specification](https://www.w3.org/TR/webgpu/): feature negotiation, format capabilities, texture copies and uploads.
- [meshoptimizer](https://github.com/zeux/meshoptimizer): separate optimization, quantization, compression and simplification stages; inspect gltfpack options.

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/bin/bash -lc "python3 - <<'PY'
from pathlib import Path
p=Path('/tmp/alien-harvester-check/index.html')
s=p.read_text().replace('camera.position.set(620,235,460)','camera.position.set(620,180,460)')
p.write_text(s)
PY" in /home/claude-agent/forge-build/forge-assets/jobs/alien-harvester-v1
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/bin/bash -lc 'ssh gex44 tail -n 18 /root/fal-author/alien-harvester-v1/build.log' in /home/claude-agent/forge-build/forge-assets/jobs/alien-harvester-v1
 succeeded in 444ms:
00:20.785  render           | Saved: '/root/fal-author/alien-harvester-v1/clay.png'
HARVESTER 20.3 Render final.png
00:28.470  render           | Saved: '/root/fal-author/alien-harvester-v1/final.png'
HARVESTER 28.0 Render side.png
00:36.186  render           | Saved: '/root/fal-author/alien-harvester-v1/side.png'
HARVESTER 35.7 Render rear.png
00:40.226  render           | Saved: '/root/fal-author/alien-harvester-v1/rear.png'
HARVESTER 39.8 Render close.png
00:44.470  render           | Saved: '/root/fal-author/alien-harvester-v1/close.png'
HARVESTER 44.0 Render arms-test.png
00:48.513  render           | Saved: '/root/fal-author/alien-harvester-v1/arms-test.png'
HARVESTER 48.1 Render paint-0.png
00:50.016  render           | Saved: '/root/fal-author/alien-harvester-v1/paint-0.png'
HARVESTER 49.6 Render paint-1.png
00:51.590  render           | Saved: '/root/fal-author/alien-harvester-v1/paint-1.png'
HARVESTER 51.2 Render paint-2.png
00:54.782  render           | Saved: '/root/fal-author/alien-harvester-v1/paint-2.png'
HARVESTER 54.4 Render paint-3.png

 succeeded in 184025ms:
ERROR: Reconnecting... 2/2
warning: Falling back from WebSockets to HTTPS transport. stream disconnected before completion: websocket closed by server before response.completed
context compacted
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/bin/bash -lc 'ls -lh build_alien-harvester.py alien-harvester.glb' in /home/claude-agent/forge-build/forge-assets/jobs/alien-harvester-v1
 succeeded in 0ms:
-rw-r--r-- 1 claude-agent claude-agent 12M Oct 16 19:02 alien-harvester.glb
-rw-rw-r-- 1 claude-agent claude-agent 47K Oct 16 19:06 build_alien-harvester.py

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/bin/bash -lc 'ssh gex44 tail -n 28 /root/fal-author/alien-harvester-v1/build.log' in /home/claude-agent/forge-build/forge-assets/jobs/alien-harvester-v1
 succeeded in 464ms:
HARVESTER 12.7 Render clay.png
00:20.785  render           | Saved: '/root/fal-author/alien-harvester-v1/clay.png'
HARVESTER 20.3 Render final.png
00:28.470  render           | Saved: '/root/fal-author/alien-harvester-v1/final.png'
HARVESTER 28.0 Render side.png
00:36.186  render           | Saved: '/root/fal-author/alien-harvester-v1/side.png'
HARVESTER 35.7 Render rear.png
00:40.226  render           | Saved: '/root/fal-author/alien-harvester-v1/rear.png'
HARVESTER 39.8 Render close.png
00:44.470  render           | Saved: '/root/fal-author/alien-harvester-v1/close.png'
HARVESTER 44.0 Render arms-test.png
00:48.513  render           | Saved: '/root/fal-author/alien-harvester-v1/arms-test.png'
HARVESTER 48.1 Render paint-0.png
00:50.016  render           | Saved: '/root/fal-author/alien-harvester-v1/paint-0.png'
HARVESTER 49.6 Render paint-1.png
00:51.590  render           | Saved: '/root/fal-author/alien-harvester-v1/paint-1.png'
HARVESTER 51.2 Render paint-2.png
00:54.782  render           | Saved: '/root/fal-author/alien-harvester-v1/paint-2.png'
HARVESTER 54.4 Render paint-3.png
00:58.073  render           | Saved: '/root/fal-author/alien-harvester-v1/paint-3.png'
HARVESTER 57.7 Render paint-4.png
01:00.138  render           | Saved: '/root/fal-author/alien-harvester-v1/paint-4.png'
HARVESTER 59.7 Render paint-5.png
01:01.756  render           | Saved: '/root/fal-author/alien-harvester-v1/paint-5.png'
Info: Saved as "harvester-source.blend"
HARVESTER 61.7 COMPLETE

Blender quit

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/bin/bash -lc "scp gex44:/root/fal-author/alien-harvester-v1/\\{alien-harvester.glb,final.png,side.png,clay.png,paints.png,nodes.json,NOTES.md,close.png,arms-test.png,rear.png\\} ." in /home/claude-agent/forge-build/forge-assets/jobs/alien-harvester-v1
 exited 1 in 679ms:
scp: /root/fal-author/alien-harvester-v1/{alien-harvester.glb,final.png,side.png,clay.png,paints.png,nodes.json,NOTES.md,close.png,arms-test.png,rear.png}: No such file or directory

codex
The rebuilt asset is ready. The changes add a stronger back profile, thicker arm roots, deeper armour joints, and darker teeth around the amber maw. I’m inspecting the renders and checking the exported GLB now.
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/bin/bash -lc 'scp gex44:/root/fal-author/alien-harvester-v1/alien-harvester.glb gex44:/root/fal-author/alien-harvester-v1/final.png gex44:/root/fal-author/alien-harvester-v1/side.png gex44:/root/fal-author/alien-harvester-v1/clay.png gex44:/root/fal-author/alien-harvester-v1/paints.png gex44:/root/fal-author/alien-harvester-v1/nodes.json gex44:/root/fal-author/alien-harvester-v1/NOTES.md gex44:/root/fal-author/alien-harvester-v1/close.png gex44:/root/fal-author/alien-harvester-v1/arms-test.png gex44:/root/fal-author/alien-harvester-v1/rear.png .' in /home/claude-agent/forge-build/forge-assets/jobs/alien-harvester-v1
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/bin/bash -lc "sed -n '1,230p' /tmp/alien-harvester-check/contract.py" in /home/claude-agent/forge-build/forge-assets/jobs/alien-harvester-v1
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from pathlib import Path
from PIL import Image
import io,json,struct
root=Path('/home/claude-agent/forge-build/forge-assets/jobs/alien-harvester-v1')
b=(root/'alien-harvester.glb').read_bytes();n=struct.unpack_from('<I',b,12)[0];d=json.loads(b[20:20+n]);binary=b[28+n:]
assert len(b)<=12_000_000
assert not d.get('cameras') and not d.get('extensions',{}).get('KHR_lights_punctual')
assert len(d['materials'])<=9
expected={'Hull',*[f'Arm_{i}' for i in range(1,7)],*[f'Thruster_{i}' for i in range(1,4)],'Camera_Chase','Light_Nav_L','Light_Nav_R','Light_Beacon'}
assert {x['name'] for x in d['nodes']}==expected
assert len(d['meshes'])==7
paint=next(m for m in d['materials'] if m['name']=='Paint');assert paint['pbrMetallicRoughness']['baseColorFactor']==[.1,.11,.1,1]
assert {'Engines','Lamps'}.issubset({m['name'] for m in d['materials']})
images=[]
for im in d['images']:
 v=d['bufferViews'][im['bufferView']];imdata=binary[v['byteOffset']:v['byteOffset']+v['byteLength']];pil=Image.open(io.BytesIO(imdata));w,h=pil.size;limit=512 if 'ORM' in im['name'] else 1024;assert max(w,h)<=limit
 images.append([im['name'],w,h,len(imdata)])
nodeinfo=json.loads((root/'nodes.json').read_text());assert set(nodeinfo['nodes'])==expected
for node in d['nodes']:
 name=node['name'];assert node.get('scale',[1,1,1])==[1,1,1]
 assert max(abs(a-b) for a,b in zip(node.get('translation',[0,0,0]),nodeinfo['nodes'][name]['position']))<1e-4
 if name.startswith('Arm_'): assert nodeinfo['axes'][name]==[0,0,1] and 'mesh' in node
 elif name!='Hull':assert 'mesh' not in node
assert 80000<=nodeinfo['triangles']<=200000
assert len((root/'NOTES.md').read_text().splitlines())==6
assert Image.open(root/'final.png').size==(1920,1080)
assert Image.open(root/'clay.png').size==(1920,1080)
assert Image.open(root/'paints.png').size==(1920,720)
print(json.dumps({'status':'PASS','bytes':len(b),'triangles':nodeinfo['triangles'],'materials':len(d['materials']),'nodes':len(d['nodes']),'images':images,'bbox':nodeinfo['bounding_box']},indent=2))

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/bin/bash -lc "sed -n '1,160p' /home/claude-agent/.agents/skills/blender-game-assets/references/critic-loop.md" in /home/claude-agent/forge-build/forge-assets/jobs/alien-harvester-v1
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sed: can't read /home/claude-agent/.agents/skills/blender-game-assets/references/critic-loop.md: No such file or directory

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/bin/bash -lc 'rg --files /home/claude-agent/.agents/skills/blender-game-assets | head -35' in /home/claude-agent/forge-build/forge-assets/jobs/alien-harvester-v1
 succeeded in 0ms:
/home/claude-agent/.agents/skills/blender-game-assets/reference/build_hull.py
/home/claude-agent/.agents/skills/blender-game-assets/reference/cinematic.py
/home/claude-agent/.agents/skills/blender-game-assets/reference/build_rocks.py
/home/claude-agent/.agents/skills/blender-game-assets/reference/INDEX.md
/home/claude-agent/.agents/skills/blender-game-assets/reference/clay.py
/home/claude-agent/.agents/skills/blender-game-assets/reference/critic-loop.md
/home/claude-agent/.agents/skills/blender-game-assets/reference/gen_material.py
/home/claude-agent/.agents/skills/blender-game-assets/reference/runtime-parity-and-diagnostics.md
/home/claude-agent/.agents/skills/blender-game-assets/reference/car-paint-flakes.md
/home/claude-agent/.agents/skills/blender-game-assets/reference/cabinlib.py
/home/claude-agent/.agents/skills/blender-game-assets/reference/matlib.py
/home/claude-agent/.agents/skills/blender-game-assets/SKILL.md
/home/claude-agent/.agents/skills/blender-game-assets/reference/interior_bake/43_dressing.py
/home/claude-agent/.agents/skills/blender-game-assets/reference/interior_bake/50_assemble.py
/home/claude-agent/.agents/skills/blender-game-assets/reference/interior_bake/40_kit.py
/home/claude-agent/.agents/skills/blender-game-assets/reference/interior_bake/70_clay.py
/home/claude-agent/.agents/skills/blender-game-assets/reference/interior_bake/42_cockpit.py
/home/claude-agent/.agents/skills/blender-game-assets/reference/interior_bake/10_tile_geo.py
/home/claude-agent/.agents/skills/blender-game-assets/reference/interior_bake/20_tile_bake.py
/home/claude-agent/.agents/skills/blender-game-assets/reference/interior_bake/61_run_kit.py
/home/claude-agent/.agents/skills/blender-game-assets/reference/interior_bake/30_compose.py
/home/claude-agent/.agents/skills/blender-game-assets/reference/interior_bake/00_lib.py
/home/claude-agent/.agents/skills/blender-game-assets/reference/interior_bake/60_run_tiles.py
/home/claude-agent/.agents/skills/blender-game-assets/reference/interior_bake/41_kit_props.py
/home/claude-agent/.agents/skills/blender-game-assets/reference/high-to-low-baking.md
/home/claude-agent/.agents/skills/blender-game-assets/reference/asset-delivery.md
/home/claude-agent/.agents/skills/blender-game-assets/reference/build_tender.py
/home/claude-agent/.agents/skills/blender-game-assets/reference/furniture-reconstruction.md
/home/claude-agent/.agents/skills/blender-game-assets/reference/pack_leaf.py
/home/claude-agent/.agents/skills/blender-game-assets/reference/terrain-erosion.md
/home/claude-agent/.agents/skills/blender-game-assets/reference/baking-and-diagnostics.md
/home/claude-agent/.agents/skills/blender-game-assets/reference/preflight-and-recovery.md
/home/claude-agent/.agents/skills/blender-game-assets/scripts/audit_glb.py
/home/claude-agent/.agents/skills/blender-game-assets/scripts/erosion/THIRD_PARTY_NOTICES.md
/home/claude-agent/.agents/skills/blender-game-assets/scripts/erosion/erode_terrain.py

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/bin/bash -lc "sed -n '1,240p' build_alien-harvester.py" in /home/claude-agent/forge-build/forge-assets/jobs/alien-harvester-v1
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"""Alien harvester: deterministic clean-scene build, Cycles tile bakes, GLB and proof renders.
Run: blender -b --python-exit-code 1 --python build_alien-harvester.py
Optional -- --probe performs a tiny GPU bake/export/reimport before the full job.
Only downloaded inputs are CC0 Poly Haven jpgs. All other detail is geometry/nodes.
"""
import bpy, math, json, os, sys, struct, urllib.request, random, time
from pathlib import Path
from mathutils import Vector, Matrix
import bmesh
import numpy as np

ROOT=Path(__file__).resolve().parent
CACHE=ROOT/'textures'; CACHE.mkdir(exist_ok=True)
OUT=ROOT
random.seed(119)
T0=time.time()
PAINTS=[('Obsidian carapace',[.10,.11,.10]),('Deep violet',[.115,.055,.18]),('Bone white',[.68,.64,.52]),('Abyssal teal',[.025,.18,.175]),('Oxblood',[.22,.028,.035]),('Jade',[.08,.29,.16])]
PH_IDS=['metal_plate','metal_plate_02','rusty_metal_02']
# Revision budget: bounded by the user's 80-minute authoring window. Hero: front-port elevated, side ortho, clay, close and rear.
# Geometry 80k..200k triangles; <=9 mats; GLB <=12MB; colour/normal <=1024; ORM <=512.

def log(s): print('HARVESTER',round(time.time()-T0,1),s,flush=True)
def select(o):
    bpy.ops.object.select_all(action='DESELECT'); o.select_set(True); bpy.context.view_layer.objects.active=o

def init():
    bpy.ops.object.select_all(action='SELECT'); bpy.ops.object.delete(use_global=False)
    for d in list(bpy.data.materials): bpy.data.materials.remove(d)
    sc=bpy.context.scene; sc.render.engine='CYCLES'; sc.cycles.samples=24
    pref=bpy.context.preferences.addons['cycles'].preferences
    try: pref.compute_device_type='OPTIX'
    except: pref.compute_device_type='CUDA'
    pref.get_devices()
    gpu=[]
    for d in pref.devices:
        d.use=d.type!='CPU'
        if d.use: gpu.append(d.name)
    assert gpu,'GPU required'
    sc.cycles.device='GPU'; sc.cycles.use_denoising=True
    sc.cycles.max_bounces=5; sc.cycles.diffuse_bounces=2; sc.cycles.glossy_bounces=3
    sc.render.image_settings.file_format='PNG'; sc.render.image_settings.color_mode='RGBA'
    sc.render.film_transparent=False
    sc.unit_settings.system='METRIC'; sc.unit_settings.scale_length=1
    sc.view_settings.view_transform='AgX'
    sc.render.resolution_percentage=100
    log('GPU '+str(gpu))
    return sc

sc=init()

def fetch(id,map):
    p=CACHE/f'{id}_{map}_1k.jpg'
    if not p.exists():
        url=f'https://dl.polyhaven.org/file/ph-assets/Textures/jpg/1k/{id}/{id}_{map}_1k.jpg'
        req=urllib.request.Request(url,headers={'User-Agent':'Mozilla/5.0 (Forge asset authoring)'})
        with urllib.request.urlopen(req,timeout=90) as r: p.write_bytes(r.read())
    img=bpy.data.images.load(str(p),check_existing=True)
    if map!='diff': img.colorspace_settings.name='Non-Color'
    return img

def node(nt,kind):return nt.nodes.new(kind)
def mathnode(nt,op,a,b):
    n=node(nt,'ShaderNodeMath');n.operation=op
    for i,v in enumerate((a,b)):
        if isinstance(v,(float,int)): n.inputs[i].default_value=v
        else:nt.links.new(v,n.inputs[i])
    return n.outputs[0]
def color_mix(nt,a,b,fac,mode='MIX'):
    n=node(nt,'ShaderNodeMixRGB');n.blend_type=mode
    for i,v in enumerate((fac,a,b)):
        if isinstance(v,(float,int)):n.inputs[i].default_value=v
        elif isinstance(v,(tuple,list)):n.inputs[i].default_value=v
        else:nt.links.new(v,n.inputs[i])
    return n.outputs[0]

def bake_material(name,kind,ph):
    """Bake a periodic 8m stock surface, then use it at world scale on every part."""
    log('Bake '+name)
    mat=bpy.data.materials.new(name); mat.use_nodes=True
    nt=mat.node_tree;nt.nodes.clear();lk=nt.links
    out=node(nt,'ShaderNodeOutputMaterial');p=node(nt,'ShaderNodeBsdfPrincipled');lk.new(p.outputs[0],out.inputs['Surface'])
    uv=node(nt,'ShaderNodeTexCoord')
    images={}
    for k in ['diff','nor_gl','arm']:
        t=node(nt,'ShaderNodeTexImage');t.image=fetch(ph,k);t.extension='REPEAT';lk.new(uv.outputs['UV'],t.inputs['Vector']);images[k]=t
    bw=node(nt,'ShaderNodeRGBToBW');lk.new(images['diff'].outputs['Color'],bw.inputs[0])
    noise=node(nt,'ShaderNodeTexNoise');noise.inputs['Scale'].default_value=92;noise.inputs['Detail'].default_value=3
    lk.new(uv.outputs['UV'],noise.inputs['Vector'])
    # Fine pitting and irregular mill finish remain neutral under faction multiplication.
    if kind=='paint':
        lum=mathnode(nt,'MINIMUM',mathnode(nt,'ADD',mathnode(nt,'MULTIPLY',bw.outputs[0],4.6),.16),.96)
        macro=node(nt,'ShaderNodeTexNoise');macro.inputs['Scale'].default_value=3.5;macro.inputs['Detail'].default_value=5;lk.new(uv.outputs['UV'],macro.inputs['Vector'])
        grime=mathnode(nt,'ADD',mathnode(nt,'MULTIPLY',macro.outputs['Fac'],.68),.30)
        # Directional oxidation and fine scratches baked into the neutral reflectance.
        stretch=node(nt,'ShaderNodeVectorMath');stretch.operation='MULTIPLY';stretch.inputs[1].default_value=(.7,19,1);lk.new(uv.outputs['UV'],stretch.inputs[0])
        streak=node(nt,'ShaderNodeTexNoise');streak.inputs['Scale'].default_value=8;streak.inputs['Detail'].default_value=4;lk.new(stretch.outputs[0],streak.inputs['Vector'])
        sr=node(nt,'ShaderNodeValToRGB');sr.color_ramp.elements[0].position=.32;sr.color_ramp.elements[0].color=(.27,.27,.27,1);sr.color_ramp.elements[1].position=.65;sr.color_ramp.elements[1].color=(1,1,1,1);lk.new(streak.outputs['Fac'],sr.inputs[0])
        base=color_mix(nt,color_mix(nt,lum,grime,1,'MULTIPLY'),sr.outputs[0],.32,'MULTIPLY');rough=.28;metal=.72
    elif kind=='metal':
        base=color_mix(nt,images['diff'].outputs[0],(.12,.15,.19,1),.80);rough=.31;metal=.9
    elif kind=='scorch':
        base=color_mix(nt,images['diff'].outputs[0],(.035,.024,.018,1),.93);rough=.43;metal=.76
    else:
        base=color_mix(nt,images['diff'].outputs[0],(.018,.023,.026,1),.94);rough=.64;metal=.38
    sep=node(nt,'ShaderNodeSeparateColor');lk.new(images['arm'].outputs[0],sep.inputs['Color'])
    r=mathnode(nt,'ADD',mathnode(nt,'MULTIPLY',sep.outputs['Green'],.23),rough)
    ao=mathnode(nt,'ADD',mathnode(nt,'MULTIPLY',sep.outputs['Red'],.22),.78)
    normal=node(nt,'ShaderNodeNormalMap');normal.inputs['Strength'].default_value=.65
    lk.new(images['nor_gl'].outputs[0],normal.inputs['Color'])
    bump=node(nt,'ShaderNodeBump');bump.inputs['Strength'].default_value=.17;bump.inputs['Distance'].default_value=.018
    lk.new(noise.outputs['Fac'],bump.inputs['Height']);lk.new(normal.outputs[0],bump.inputs['Normal']);lk.new(bump.outputs[0],p.inputs['Normal'])
    lk.new(base,p.inputs['Base Color']);lk.new(r,p.inputs['Roughness']);p.inputs['Metallic'].default_value=metal
    bpy.ops.mesh.primitive_plane_add(size=8);plane=bpy.context.object;plane.name='Bake_stock';plane.data.materials.append(mat)
    target=node(nt,'ShaderNodeTexImage');nt.nodes.active=target
    emit=node(nt,'ShaderNodeEmission')
    baked={}
    for typ,res in [('Base',1024),('Normal',1024 if kind=='paint' else 512),('ORM',512)]:
        img=bpy.data.images.new(name+'_'+typ,width=res,height=res,alpha=False)
        if typ!='Base':img.colorspace_settings.name='Non-Color'
        target.image=img;nt.nodes.active=target
        sc.render.bake.margin=8;sc.cycles.samples=16
        if typ=='Normal':
            lk.new(p.outputs[0],out.inputs['Surface']);bpy.ops.object.bake(type='NORMAL')
        else:
            if typ=='Base':lk.new(base,emit.inputs['Color'])
            else:
                comb=node(nt,'ShaderNodeCombineColor');lk.new(ao,comb.inputs['Red']);lk.new(r,comb.inputs['Green']);comb.inputs['Blue'].default_value=metal;lk.new(comb.outputs[0],emit.inputs['Color'])
            lk.new(emit.outputs[0],out.inputs['Surface']);bpy.ops.object.bake(type='EMIT')
        img.filepath_raw=str(CACHE/(name+'_'+typ+('.jpg' if typ=='Base' else '.png')));img.file_format='JPEG' if typ=='Base' else 'PNG';sc.render.image_settings.quality=90;img.save();baked[typ]=img
    bpy.data.objects.remove(plane,do_unlink=True)
    nt.nodes.clear();out=node(nt,'ShaderNodeOutputMaterial');p=node(nt,'ShaderNodeBsdfPrincipled');lk.new(p.outputs[0],out.inputs['Surface'])
    for typ in ['Base','Normal','ORM']:
        t=node(nt,'ShaderNodeTexImage');t.image=baked[typ];t.name=typ;t.label='Cycles baked 8m tiling stock'
        if typ=='Base':lk.new(t.outputs[0],p.inputs['Base Color'])
        elif typ=='Normal':
            n=node(nt,'ShaderNodeNormalMap');lk.new(t.outputs[0],n.inputs['Color']);lk.new(n.outputs[0],p.inputs['Normal'])
        else:
            s=node(nt,'ShaderNodeSeparateColor');lk.new(t.outputs[0],s.inputs[0]);lk.new(s.outputs['Green'],p.inputs['Roughness']);lk.new(s.outputs['Blue'],p.inputs['Metallic'])
            # Official glTF occlusion hook.
            if 'glTF Material Output' not in bpy.data.node_groups:
                ng=bpy.data.node_groups.new('glTF Material Output','ShaderNodeTree');ng.interface.new_socket(name='Occlusion',in_out='INPUT',socket_type='NodeSocketFloat')
            g=node(nt,'ShaderNodeGroup');g.node_tree=bpy.data.node_groups['glTF Material Output'];lk.new(s.outputs['Red'],g.inputs['Occlusion'])
    return mat

if '--probe' in sys.argv:
    m=bake_material('Probe','paint','metal_plate')
    bpy.ops.mesh.primitive_uv_sphere_add(segments=16,ring_count=8)
    o=bpy.context.object;o.data.materials.append(m)
    bpy.ops.export_scene.gltf(filepath=str(OUT/'probe.glb'),export_format='GLB',use_selection=True)
    bpy.ops.object.delete()
    for mat in list(bpy.data.materials): bpy.data.materials.remove(mat)
    for group in list(bpy.data.node_groups): bpy.data.node_groups.remove(group)
    bpy.ops.import_scene.gltf(filepath=str(OUT/'probe.glb'))
    assert len([x for x in sc.objects if x.type=='MESH'])==1
    bpy.ops.object.camera_add(location=(3,-4,2));cam=bpy.context.object;cam.rotation_euler=(-cam.location).to_track_quat('-Z','Y').to_euler();sc.camera=cam
    bpy.ops.object.light_add(type='AREA',location=(2,-3,4));bpy.context.object.data.energy=500;bpy.context.object.data.size=4
    sc.render.resolution_x=256;sc.render.resolution_y=256;sc.render.filepath=str(OUT/'probe.png');bpy.ops.render.render(write_still=True)
    log('PROBE_OK');sys.exit(0)

MATS=[bake_material('Paint','paint','metal_plate_02'),bake_material('Titanium','metal','metal_plate'),bake_material('HeatScorched','scorch','rusty_metal_02'),bake_material('Recess','recess','metal_plate')]
# Identical metal stock normal bakes share one image in the delivered GLB.
MATS[3].node_tree.nodes['Normal'].image=MATS[1].node_tree.nodes['Normal'].image

for name,col,strength in [('Lamps',(1,.15,.008,1),2.3),('Engines',(1,.22,.018,1),2.2)]:
    m=bpy.data.materials.new(name);m.use_nodes=True;p=m.node_tree.nodes.get('Principled BSDF');p.inputs['Base Color'].default_value=col;p.inputs['Roughness'].default_value=.34;p.inputs['Metallic'].default_value=.3;p.inputs['Emission Color'].default_value=col;p.inputs['Emission Strength'].default_value=strength;MATS.append(m)

class Geo:
    def __init__(self,name,pivot=(0,0,0)):self.name=name;self.v=[];self.f=[];self.mi=[];self.pivot=Vector(pivot)
    def add(self,vs,fs,mat=0):
        n=len(self.v);self.v.extend([tuple(v) for v in vs]);self.f.extend([tuple(n+i for i in f) for f in fs]);self.mi.extend([mat]*len(fs))
    def object(self):
        me=bpy.data.meshes.new(self.name);me.from_pydata(self.v,[],self.f);me.update()
        # Recalculate closed shell normals; all surfaces use welded edge topology.
        bm=bmesh.new();bm.from_mesh(me);bmesh.ops.recalc_face_normals(bm,faces=bm.faces)
        # Remove any accidental zero-area faces before serialization.
        bad=[f for f in bm.faces if f.calc_area()<1e-9]
        if bad:bmesh.ops.delete(bm,geom=bad,context='FACES')
        bm.to_mesh(me);bm.free()
        for m in MATS:me.materials.append(m)
        for f,idx in zip(me.polygons,self.mi):f.material_index=idx;f.use_smooth=True
        uv=me.uv_layers.new(name='UVMap')
        # World scale projection: repeated baked material every 8m, no 420m atlas.
        for f in me.polygons:
            n=f.normal;ax=max(range(3),key=lambda k:abs(n[k]));axes=[k for k in range(3) if k!=ax]
            for li in f.loop_indices:
                p=me.vertices[me.loops[li].vertex_index].co
                uv.data[li].uv=(p[axes[0]]/8,p[axes[1]]/8)
        # Angle-split only hard creases, smooth the swept surfaces.
        bm=bmesh.new();bm.from_mesh(me)
        for e in bm.edges:
            if len(e.link_faces)==2 and e.calc_face_angle(0)>math.radians(48):e.smooth=False
        bm.to_mesh(me);bm.free();me.update()
        ob=bpy.data.objects.new(self.name,me);sc.collection.objects.link(ob)
        for v in me.vertices:v.co-=self.pivot
        ob.location=self.pivot
        return ob

h=Geo('Hull')

def tube(g,points,radii,mat=1,sides=12,cap=True,ellipse=1):
    pts=[Vector(p) for p in points];vs=[]
    for j,p in enumerate(pts):
        t=(pts[min(j+1,len(pts)-1)]-pts[max(j-1,0)]).normalized()
        ref=Vector((0,0,1)) if abs(t.z)<.9 else Vector((1,0,0))
        a=t.cross(ref).normalized();b=t.cross(a).normalized();r=radii[j] if hasattr(radii,'__len__') else radii
        for i in range(sides):
            ang=2*math.pi*i/sides;vs.append(p+a*(r*math.cos(ang))+b*(r*ellipse*math.sin(ang)))
    fs=[]
    for j in range(len(pts)-1):
        for i in range(sides):a=j*sides+i;b=j*sides+(i+1)%sides;fs.append((a,b,b+sides,a+sides))
    if cap:fs.extend([tuple(reversed(range(sides))),tuple((len(pts)-1)*sides+i for i in range(sides))])
    g.add(vs,fs,mat)

def ellipsoid(g,c,scale,mat=0,seg=20,rings=10):
    c=Vector(c);vs=[c+Vector((0,0,scale[2]))]
    for j in range(1,rings):
        a=math.pi*j/rings
        for i in range(seg):
            t=2*math.pi*i/seg;vs.append(c+Vector((scale[0]*math.sin(a)*math.cos(t),scale[1]*math.sin(a)*math.sin(t),scale[2]*math.cos(a))))
    vs.append(c-Vector((0,0,scale[2])));bot=len(vs)-1;fs=[]
    for i in range(seg):fs.append((0,1+i,1+(i+1)%seg))
    for j in range(rings-2):
        for i in range(seg):a=1+j*seg+i;b=1+j*seg+(i+1)%seg;fs.append((a,a+seg,b+seg,b))
    for i in range(seg):fs.append((bot,1+(rings-2)*seg+(i+1)%seg,1+(rings-2)*seg+i))
    g.add(vs,fs,mat)

def ring(g,c,axis,rad,minor,mat=1,n=64,k=8,ratio=1):
    c=Vector(c);ax=Vector(axis).normalized();a=ax.cross(Vector((0,0,1)) if abs(ax.z)<.9 else Vector((1,0,0))).normalized();b=ax.cross(a)
    vs=[]
    for i in range(n):
        t=2*math.pi*i/n;out=a*math.cos(t)+b*(math.sin(t)*ratio)
        norm=(a*math.cos(t)+b*math.sin(t)).normalized()
        for j in range(k):s=2*math.pi*j/k;vs.append(c+out*rad+norm*(minor*math.cos(s))+ax*(minor*math.sin(s)))
    fs=[]
    for i in range(n):
        for j in range(k):fs.append((i*k+j,((i+1)%n)*k+j,((i+1)%n)*k+(j+1)%k,i*k+(j+1)%k))
    g.add(vs,fs,mat)

def catmull(points,num):
    p=[Vector(points[0])]+[Vector(x) for x in points]+[Vector(points[-1])];res=[]

hook: PreToolUse
hook: PreToolUse
hook: PreToolUse
hook: PreToolUse
hook: PreToolUse Completed
hook: PreToolUse Completed
hook: PreToolUse Completed
hook: PreToolUse Completed
exec
/bin/bash -lc "sed -n '240,520p' build_alien-harvester.py" in /home/claude-agent/forge-build/forge-assets/jobs/alien-harvester-v1
 succeeded in 0ms:
    p=[Vector(points[0])]+[Vector(x) for x in points]+[Vector(points[-1])];res=[]
    for i in range(1,len(p)-2):
        for j in range(num):
            t=j/num;res.append(.5*((2*p[i])+(-p[i-1]+p[i+1])*t+(2*p[i-1]-5*p[i]+4*p[i+1]-p[i+2])*t*t+(-p[i-1]+3*p[i]-3*p[i+1]+p[i+2])*t*t*t))
    res.append(p[-2]);return res

def rounded_box(g,c,size,mat=1,bevel=.3,basis=None):
    # Six gridded faces projected onto a rounded cuboid, welded by coordinate.
    c=Vector(c);basis=basis or Matrix.Identity(3);half=Vector(size)/2;r=min(bevel,min(half)*.45)
    vals=[-1,-.72,.72,1];vs=[];fs=[];lookup={}
    for ax in range(3):
        other=[k for k in range(3) if k!=ax]
        for sign in [-1,1]:
            grid=[]
            for u in range(4):
                row=[]
                for v in range(4):
                    raw=Vector((0,0,0));raw[ax]=sign*half[ax]
                    for k,t in zip(other,(vals[u],vals[v])):raw[k]=t*half[k] if abs(t)==1 else math.copysign(half[k]-r,t)
                    inn=Vector([max(-half[k]+r,min(half[k]-r,raw[k])) for k in range(3)])
                    delta=raw-inn;pt=inn+(delta.normalized()*r if delta.length else delta);key=tuple(round(x,6) for x in pt)
                    if key not in lookup:lookup[key]=len(vs);vs.append(c+basis@pt)
                    row.append(lookup[key])
                grid.append(row)
            for u in range(3):
                for v in range(3):fs.append((grid[u][v],grid[u+1][v],grid[u+1][v+1],grid[u][v+1]))
    g.add(vs,fs,mat)

# Smooth non-capsular hull loft: blunt face, high shoulder, long torso, pinched tail.
profile=[(-200,31,25,0),(-188,37,28,1),(-158,43,28,2),(-112,51,35,3),(-55,55,40,4),(0,55,40,4),(55,51,34,3),(105,43,28,1),(150,32,20,0),(185,21,13,-1),(202,12,8,-1)]
def shape(y):
    for i in range(len(profile)-1):
        a,b=profile[i:i+2]
        if a[0]<=y<=b[0]:
            t=(y-a[0])/(b[0]-a[0]);t=t*t*(3-2*t);return tuple(a[k]*(1-t)+b[k]*t for k in range(1,4))
    return profile[0][1:] if y<profile[0][0] else profile[-1][1:]
def surface(y,t,offset=0):
    w,z,c=shape(y);return Vector(((w*1.05+offset)*math.sin(t),y,c+(z*1.30+offset)*math.cos(t)))
# Inner continuous skin: intentionally open nose, recessed rear closure.
vs=[];N=96;Y=[-199+i*397/62 for i in range(63)]
for y in Y:
    for i in range(N):vs.append(surface(y,2*math.pi*i/N,-.7))
fs=[]
for j in range(len(Y)-1):
    for i in range(N):a=j*N+i;b=j*N+(i+1)%N;fs.append((a,b,b+N,a+N))
fs.append(tuple((len(Y)-1)*N+i for i in range(N)));h.add(vs,fs,3)

def plate(g,ya,yb,ta,tb,offset=1.3,mat=0,sweep=0):
    # Curved, thick shell patch with rounded rim and subtly swept panel ends.
    nu=10;nv=12;vs=[]
    for layer in [0,1]:
        for j in range(nu+1):
            u=j/nu
            for i in range(nv+1):
                v=i/nv;t=ta+(tb-ta)*v+(.018 if ya<-200 else .042)*math.sin(u*math.pi)*(1 if ta+tb>0 else -1)
                edge=min(u*nu,(1-u)*nu,v*nv,(1-v)*nv,1)
                y=ya+(yb-ya)*u+sweep*math.sin(v*math.pi)*(0.3+.7*u)
                bulge=(.3 if ya<-200 else 1.0)*math.sin(u*math.pi)*math.sin(v*math.pi)
                d=(offset+bulge+.6*edge) if layer==0 else (-.7 if offset>=3 else offset-1.0)
                vs.append(surface(y,t,d))
    fs=[];stride=nv+1;L=(nu+1)*stride
    for j in range(nu):
        for i in range(nv):
            a=j*stride+i;fs.append((a,a+1,a+1+stride,a+stride));fs.append((a+L,a+stride+L,a+stride+1+L,a+1+L))
    border=list(range(stride))+[j*stride+nv for j in range(1,nu+1)]+[nu*stride+i for i in range(nv-1,-1,-1)]+[j*stride for j in range(nu-1,0,-1)]
    for i,a in enumerate(border):b=border[(i+1)%len(border)];fs.append((a,a+L,b+L,b))
    g.add(vs,fs,mat)
    # Fine abrasion rail set into the exposed aft lip.
    p=[surface(yb+sweep*math.sin(i/nv*math.pi),ta+(tb-ta)*i/nv,offset+.13) for i in range(nv+1)]
    tube(g,p,.19,1,6)

segments=[(-197,-169),(-168,-126),(-125,-72),(-71,-26),(-25,17),(18,58),(59,98),(99,133),(134,166),(167,200)]
for j,(a,b) in enumerate(segments):
    # Continuous crown is broad, the lateral lanes step to an oblique shoulder.
    plate(h,a,b,-.63,.63,1.6,0,4 if j>1 else -2)
    for s in [-1,1]:
        for lane,(lo,hi) in enumerate([(.655,1.28),(1.31,1.91),(1.94,2.59)]):
            aa=max(-197,a+(6 if lane%2 else -3));bb=min(200,b+(6 if lane%2 else -3))
            plate(h,aa,bb,s*lo,s*hi,1.3,0,(-7 if lane==0 else 5))
        # Belly overlap plates, exposed between harvesting roots.
        plate(h,a,b,s*2.62,s*3.12,.8,0,-2)

# Wide wrapping shoulder reinforcements break the long axial seams into organic S curves.
for side in [-1,1]:
    for yy in [-78,-3,72]:
        plate(h,yy-10,yy+3,side*.40,side*1.94,3.5,0,-17)
# Forward ventral rib armour: interlocking plates with pressure seals and steel heel strips.
for side in [-1,1]:
    for j,yy in enumerate([-178,-157,-136,-115,-94,-73]):
        plate(h,yy-6,yy+10,side*1.97,side*3.12,3.0,0,-3)
        pts=[surface(yy+10,side*(2.03+i*.102),3.05) for i in range(11)]
        tube(h,pts,.48,2,7)
        for i in [1,5,9]:
            pp=pts[i];nn=Vector((side*math.sin(2.03+i*.102),0,math.cos(2.03+i*.102)))
            tube(h,[pp,pp+nn*.33],.28,1,8)
# Secondary flush access outlines and polished damaged edges at human scale.
for side in [-1,1]:
    for j,yy in enumerate([-177,-143,-111,-84,-49,-15,20,50,91,123,151]):
        for tt in [.35,.91,2.26]:
            theta=side*tt;length=7.0+(j%3)*2.5;dt=.09
            coords=[(yy-length,theta-dt),(yy+length,theta-dt),(yy+length+1,theta-dt*.5),(yy+length+1,theta+dt*.55),(yy+length,theta+dt),(yy-length,theta+dt),(yy-length-1,theta+dt*.5),(yy-length-1,theta-dt*.5)]
            pts=[surface(y,t,3.0) for y,t in coords];tube(h,pts+[pts[0]],.085,3,5)
            # Short chipped/worn segments on the aft edge rather than a uniform silver border.
            for q in range(3):
                t=theta-dt*.7+q*dt*.55;pp=[surface(yy+length+.7,t+k*.012,3.06) for k in range(3)];tube(h,pp,.08,1,5)

# LONG RECESSED LATERAL ORGANS, rounded asymmetric outlines, two scales per side.
def vent_pod(sign,cy,cz,L,H):
    # Outline in length-height coordinates, rounded contour via Catmull Rom.
    raw=[(-L*.53,-H*.12),(-L*.41,H*.35),(-L*.10,H*.53),(L*.38,H*.38),(L*.52,H*.10),(L*.39,-H*.40),(-L*.17,-H*.48)]
    if cy>0:raw=[(-L*.53,-H*.29),(-L*.36,H*.45),(L*.41,H*.42),(L*.52,H*.23),(L*.45,-H*.31),(L*.21,-H*.46),(-L*.35,-H*.43)]
    p2=catmull([(y,0,z) for y,z in raw+[raw[0],raw[1]]],4)[:-4]
    p2=p2[:-1] if (p2[0]-p2[-1]).length<.01 else p2
    cx=shape(cy)[0]*1.05-.5
    ringspec=[(.96,0), (1.08,2.3),(1.04,5.4),(.87,6.5),(.79,4.8),(.79,1.8)]
    vs=[];n=len(p2)
    for scale,depth in ringspec:
        for p in p2:vs.append((sign*(cx+depth),cy+p.x*scale,cz+p.z*scale))
    fs=[]
    for j in range(len(ringspec)-1):
        for i in range(n):a=j*n+i;b=j*n+(i+1)%n;fs.append((a,b,b+n,a+n))
    h.add(vs,fs,0)
    # Interior dark lens with actual depth behind the separate luminous slats.
    gvs=[(sign*(cx+2),cy+p.x*.79,cz+p.z*.79) for p in p2];h.add(gvs,[tuple(range(n))],3)
    # Rim binding/scorched seal follows opening.
    rp=[Vector((sign*(cx+6),cy+p.x*.85,cz+p.z*.85)) for p in p2];tube(h,rp+[rp[0]],.42,2,7)
    for k in range(11):
        t=(k+.5)/11;yy=cy-L*.37+t*L*.72
        hh=H*.26*math.sin(math.pi*t)**.45
        # Amber organ fins are inset, with thin black horizontal heat-grille bars.
        rounded_box(h,(sign*(cx+3.2),yy,cz+.3),(1.25,L*.048,hh*2),4,.5)
        for r in range(6):
            zz=cz-hh+(r+.5)*2*hh/6
            rounded_box(h,(sign*(cx+4.0),yy,zz),(.55,L*.054,.28),2,.11)
    # Four parallel inclined armoured louvers, all sharing the same angle and height.
    for k in range(4):
        yy=cy+(k-1.5)*L*.145;hh=H*.245
        axis=Vector((0,3.8,2*hh)).normalized();depth=Vector((sign,0,0));across=axis.cross(depth).normalized()
        B=Matrix(((depth.x,across.x,axis.x),(depth.y,across.y,axis.y),(depth.z,across.z,axis.z)))
        rounded_box(h,(sign*(cx+5.0),yy,cz),(1.85,2.4,2*hh+1),0,.55,B)
    for yy in [cy-L*.28,cy+L*.27]:
        for zz in [cz-H*.35,cz+H*.34]:
            tube(h,[(sign*(cx+4.6),yy,zz),(sign*(cx+5.1),yy,zz)],.4,1,8)
for s in [-1,1]:
    vent_pod(s,-37,0,62,22);vent_pod(s,66,6,67,24)
    # Flush dorsal cooling slots mounted in the curved shell tangent plane.
    for j,cy in enumerate([94,119,143,165]):
        theta=s*.94;p=surface(cy,theta,1.85)
        n=Vector((math.sin(theta),0,math.cos(theta)));aa=Vector((0,1,0));bb=n.cross(aa).normalized();B=Matrix(((aa.x,bb.x,n.x),(aa.y,bb.y,n.y),(aa.z,bb.z,n.z)))
        rounded_box(h,p,(18-j*1.6,7.2,1.9),2,.6,B)
        rounded_box(h,p+n*.7,(15.8-j*1.6,5.2,.9),3,.35,B)
        for k in range(5):
            pp=p+aa*((k-2)*(2.7-j*.24))+n*1.2;rounded_box(h,pp,(1.5,4.5,.45),4,.18,B)

# ANNULAR MAW: thick lips, deep dark conical gullet, nested mechanical rings.
ring(h,(0,-199,0),(0,1,0),28.5,2.1,2,96,10,.89)
ring(h,(0,-201,0),(0,1,0),30.2,.58,1,96,8,.89)
ring(h,(0,-195.4,0),(0,1,0),27.8,.8,0,96,8,.89)
# Funnel behind the intake: ring strips are open; back cap deep inside.
vs=[];n=96
for yy,r in [(-201,27.2),(-195,25.5),(-186,20.2),(-177,13.6),(-169,8.8)]:
    for i in range(n):t=i*math.tau/n;vs.append((r*math.cos(t),yy,r*.89*math.sin(t)))
fs=[]
for j in range(4):
    for i in range(n):a=j*n+i;b=j*n+(i+1)%n;fs.append((a,b,b+n,a+n))
fs.append(tuple(4*n+i for i in range(n)));h.add(vs,fs,2)
ring(h,(0,-171,0),(0,1,0),9.2,1.5,3,64,8,.89)
ring(h,(0,-182,0),(0,1,0),16.6,.5,1,64,6,.89)
for i in range(56):
    t=math.tau*i/56
    # Curved inward-pointing amber vanes, segmented like the reference.
    pts=[]
    for j in range(6):
        u=j/5;r=26.1-7*u;a=t+.085*u;pts.append((r*math.cos(a),-201+11*u,r*.89*math.sin(a)))
    tube(h,pts,[.90,1.05,.98,.81,.54,.23],2,9)
    lit=[Vector(p)+Vector((-.16*math.cos(t),-.72,-.16*math.sin(t))) for p in pts]
    tube(h,lit,[.29,.46,.44,.38,.24,.08],4,7)
    # Dark rib continuing down the gullet from each luminous tooth.
    pts2=[]
    for j in range(6):
        u=j/5;r=24-15*u;a=t+.085+.12*u;pts2.append((r*math.cos(a),-193+23*u,r*.89*math.sin(a)))
    tube(h,pts2,[.6,.72,.68,.55,.4,.28],2,6)
    if i%4==0:
        t2=t;pos=(30.7*math.cos(t2),-202,27.2*math.sin(t2));tube(h,[pos,(pos[0],-202.5,pos[2])],.42,1,8)
ring(h,(0,-178.8,0),(0,1,0),14.2,.42,4,64,6,.89)
# Heavy overhanging brow and lower mandibles swallow the maw rim into the carapace.
# These are closed, curved armour shells, not rods floating beside the cheek.
plate(h,-207,-157,-.93,.93,3.1,0,-6)
for side in [-1,1]:
    plate(h,-205,-151,side*.98,side*1.94,3.2,0,7)
    plate(h,-207,-154,side*2.01,side*3.10,3.0,0,-4)
    # Three recessed hydraulic channels and layered reinforcement around the maw cheek.
    for k in range(3):
        theta=side*(1.35+k*.17)
        pts=[surface(y,theta,3.42) for y in [-198,-195,-185,-180]]
        tube(h,pts,[.38,.68,.68,.2],2,8)
        tube(h,[surface(y,theta,3.9) for y in [-194,-190,-186]],[.12,.24,.12],1,6)
    for theta in [side*.95,side*1.97]:
        pts=[surface(-203+j*5.1,theta,3.4) for j in range(10)]
        tube(h,pts,.5,2,8)
# Irregular impact chips catch light along exposed plate lips, with dark undercuts.
# Chip strips are attached to the armour rim and do not change faction colour regions.
for jj,(ya,yb) in enumerate(segments[:-1]):
    for side in [-1,1]:
        for kk in range(7):
            theta=side*(.20+kk*.355+random.uniform(-.07,.07))
            yy=yb-3+random.uniform(-1,1);dt=random.uniform(.018,.046)
            pp=[surface(yy,theta+i*dt/4,2.0) for i in range(5)]
            tube(h,pp,[.035,.09,.12,.07,.025],1,5)

# Dorsal blades: swept taper, armoured root collars; clustered aft of shoulder.
for row in [-1,0,1]:
    for i,yy in enumerate([-35,-7,21,49,77,104,129,151]):
        if row and i in [0,7]:continue
        theta=row*.43;base=surface(yy+row*3,theta,2.0);ht=(23 if row==0 else 18)*math.sin((i+1)/9*math.pi)**.5*(1+.10*math.sin(i*2.7))
        pts=catmull([base,base+Vector((row*2,3,ht*.4)),base+Vector((row*5,11,ht*.78)),base+Vector((row*7,21,ht))],5)
        rr=[3.6*(1-j/(len(pts)-1))**1.05+.035 for j in range(len(pts))]
        tube(h,pts,rr,2,10,.66);ellipsoid(h,base,(5.3,7.8,2.8),0,18,8)
        ring(h,base+Vector((0,0,1.8)),(0,0,1),4.1,.6,2,24,7,1.25)
        tube(h,[base+Vector((row*2,0,1)),base+Vector((row*3,4,ht*.36)),base+Vector((row*5,11,ht*.7))],[.35,.28,.05],1,6)

# Tail split vanes around the engine cluster: swept, no familiar human ship tail.
for s in [-1,1]:
    for zz in [-14,15]:
        pts=catmull([(s*28,132,zz),(s*31,163,zz*1.1),(s*26,189,zz*1.08),(s*21,211,zz*.9)],6)
        rr=[6*(1-i/(len(pts)-1))**.8+.07 for i in range(len(pts))];tube(h,pts,rr,0,14,.58)
        tube(h,[p+Vector((0,0,2.2 if zz>0 else -2.2)) for p in pts[:-3]],[.30]*len(pts[:-3]),1,6)

# Three main engines, bevelled ring exits, recessed glowing interiors.
THRUSTERS=[]
for i,(x,z,r,end) in enumerate([(-24,-7,12,196),(24,-7,12,196),(0,15,9,201)]):
    tube(h,[(x,133,z),(x,147,z),(x,169,z),(x,end-4,z)],[r*.83,r*1.21,r*1.1,r],0,48)
    ring(h,(x,151,z),(0,1,0),r*1.16,.9,2,48,8)
    # Exposed hot chamber between overlapping casing collars, visible from the side.
    for yy in [165,167.3,169.6,171.9]:ring(h,(x,yy,z),(0,1,0),r*1.115,.82,5,48,6)
    for yy in [162,175]:ring(h,(x,yy,z),(0,1,0),r*1.15,1.2,2,48,8)
    for k in range(8):
        t=k*math.tau/8
        tube(h,[(x+r*1.17*math.cos(t),161,z+r*1.17*math.sin(t)),(x+r*1.17*math.cos(t),176,z+r*1.17*math.sin(t))],.7,2,7)
    ring(h,(x,end-3,z),(0,1,0),r,1.4,2,64,8)
    ring(h,(x,end,z),(0,1,0),r,.55,1,64,8)
    # Hollow exit bowl in front of the solid engine body.
    vv=[]
    for yy,rr in [(end+.2,r*.9),(end-3,r*.82),(end-6,r*.58)]:
        for k in range(48):t=k*math.tau/48;vv.append((x+rr*math.cos(t),yy,z+rr*math.sin(t)))
    ff=[]
    for j in range(2):
        for k in range(48):a=j*48+k;b=j*48+(k+1)%48;ff.append((a,b,b+48,a+48))
    ff.append(tuple(96+k for k in range(48)));h.add(vv,ff,5)
    ring(h,(x,end-1,z),(0,1,0),r*.65,.85,5,48,8)
    for k in range(16):
        t=k*math.tau/16
        p1=(x+(r+.3)*math.cos(t),end-18,z+(r+.3)*math.sin(t));p2=(x+(r+.4)*math.cos(t),end-1,z+(r+.4)*math.sin(t))
        tube(h,[p1,p2],.6,2,6)
    THRUSTERS.append((x,end+.4,z))

# Six articulated harvesting tentacles, each a single rigid moving node at its socket.
arms=[]
for side in [-1,1]:
    for j,y in enumerate([-54,5,64]):
        idx=len(arms)+1;root=Vector((side*(44-j*1.5),y+(24 if side<0 else 0),-29+j*.4));g=Geo('Arm_'+str(idx),root)
        ellipsoid(h,root+Vector((0,0,2)),(10.2,10.8,5.7),0,24,10)
        axis=Vector((side*.45,0,-.89)).normalized()
        ring(h,root+axis*1.0,axis,8.3,1.55,0,40,8)
        ring(h,root+axis*2.0,axis,7.3,.8,2,32,8)
        ellipsoid(g,root,(6.3,6.3,6.5),1,24,12)
        dy=[[-3,-3,11,18,7],[4,8,13,6,-4],[6,25,39,42,28]][j]
        if side<0:dy=[v+5*math.sin(k*1.4+j) for k,v in enumerate(dy)]
        curl=[(6,dy[0],-12),(18-j,dy[1],-26),(30-j*4,dy[2],-39-j*2),(26-j*4,dy[3],-50-j*2),(16+j,dy[4],-54-j+(3 if side<0 else 0))]
        if j==2:curl=[(5,dy[0],-12),(13,dy[1],-23),(28,dy[2],-34),(28,dy[3],-48),(14,dy[4],-59)]
        points=[root]+[root+Vector((side*x,dy,dz)) for x,dy,dz in curl]
        pts=catmull(points,7);N=len(pts)
        rr=[6.5*(1-i/(N-1))+.95 for i in range(N)]
        tube(g,pts,rr,3,16)
        # Overlapping armoured vertebrae with a narrow band of tendon visible.
        for k in range(0,N-2,2):
            a,b=pts[k],pts[min(k+2,N-1)];mid=(a+b)/2;direction=(b-a).normalized();length=(b-a).length
            r=rr[k]+.4
            tube(g,[a,a+direction*.5,b-direction*.55,b],[r*.91,r*1.08,r*1.02,r*.85],0,14,.88)
            ring(g,a+direction*.6,direction,r*1.02,.22,1,14,6,.88)
            # One narrow spinal rail down every link; no free-floating greebles.

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exec
/bin/bash -lc 'cat /home/claude-agent/.agents/skills/blender-game-assets/reference/critic-loop.md' in /home/claude-agent/forge-build/forge-assets/jobs/alien-harvester-v1
 succeeded in 0ms:
<!-- Distilled from vercel-labs/vgpu .claude/skills/vgpu-agent-flow/references/asset-iteration.md and
.subharness/agents/asset-author.ts + asset-critic.ts at commit 68cb1d8d198c (MIT, Copyright (c) 2025 Vercel, Inc.),
rewritten for Forge lanes (forge-agent, Astra author, a second model family as critic). -->

# Author and critic loop for a Blender asset

Use this for any authored asset that will be judged by eye: a hero prop, a character, a building, an
environment. Skip it for a mechanical re-export.

## Seats

| Seat | Who | Owns |
| --- | --- | --- |
| Author | Astra (operator law: Blender work goes to Astra) | Geometry, authored materials, UVs, bakes, Blender renders, the export |
| Runtime | The root, or one worker when the shader work is real | Loading the export in the game's actual three.js path, captures, measured costs |
| Critic | A different model family from the author, reading the real images | Findings only. Never edits the asset |

The critic must open the actual capture files. A critic that cannot read images says so and returns
BLOCKED; it never writes a visual verdict from metrics or from the author's description.

## Budget

- Default: **3 revisions, at most 2 critic passes per revision.** The brief may set another cap.
- A cap is an execution limit, not acceptance. Cap reached with open visual findings = `REVISE`
  reported as such, never a `PASS`.
- No unattended improvement loop past the cap.

## Before the first render

Write in the task folder: scope, target cameras (gameplay view, hero, rear, closest required view),
output paths, budgets (triangles, exported vertices, texture bytes and GPU memory, draw calls) and
the revision cap. Budgets are task inputs; do not copy another asset's numbers.

Run the [preflight](preflight-and-recovery.md) once: Blender starts and runs a scene operation, a
tiny bake and export round-trips through the real loader, one real runtime frame is captured.

Integrate a cheap LOW blockout in the runtime at this stage. Scale, axis, camera and material
contract problems are found before an expensive bake, not after.

## Each revision keeps

- the source revision or parameters that rebuild the previous asset;
- real hero, rear and close-up captures, same camera, light, exposure and pose every time;
- triangles, exported vertices, primitives, material count, file bytes, texture GPU memory;
- runtime draw counters, kept apart from offline estimates;
- the critic's findings, the fixes chosen, and the next measured result.

## The critic pass

The critic receives the previous AND the current captures and metrics under matched cameras (or
an explicit "first revision, no baseline"), the reference image, and the brief. It returns:

- **at most five findings**, ordered by impact, each with a stable id, the evidence path (whole
  view plus crop or image coordinates), the visible symptom, a suggested correction and a
  **measurable acceptance condition**;
- regressions against the previous revision;
- resolved / remaining / regressed status of earlier findings on a follow-up pass;
- `PASS`, `REVISE` or `BLOCKED`, with the limits of its evidence.

It compares against the reference as well as the previous revision: clean topology and progress
since last time do not make the asset match the reference. It separates the observed defect from
the suspected cause. A small whole-image difference can hide severe local damage (thin trim,
stairs, silhouette edges): it inspects crops at each delivered LOD. Design ideas are suggestions,
not new acceptance requirements.

When the cause could be the asset or the renderer, it asks for the diagnostic captures in
[runtime parity](runtime-parity-and-diagnostics.md) (maps off, AO neutral, lightmap off) rather
than guessing.

## Rules that stop false passes

- A generated concept image is never proof of a working model. Label concepts as concepts; accept
  only on real renders of the real export.
- Requested bakes need bake provenance (what was baked, from what, at what settings) and matched
  runtime captures with each contribution switched off in turn. Vertex tint and runtime shadows
  are not substitutes for a requested AO or lightmap bake.
- An atlas repair is checked on the full matched views, not only on the crop that was broken: a new
  layout can fix one edge and turn another face black.
- One writer per handoff file. A reply never gets appended to a request file another agent will
  regenerate. Superseded manifests and failed captures stay on disk.
- The author hands the root a compact result: verdict, the few decisive images, the metrics table.
  Full capture sets stay on disk; the root does not load every image.
- A user's rejection or a changed brief reopens any earlier `PASS`.

## Lessons

When a revision teaches something that will recur, write it as: evidence path, symptom, cause,
intervention, matched before/after result, scope. The root checks it and makes a narrow edit to this
skill. Reject task-specific style preferences dressed up as general rules.

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exec
/bin/bash -lc 'python3 /home/claude-agent/.agents/skills/blender-game-assets/scripts/audit_glb.py alien-harvester.glb --strict' in /home/claude-agent/forge-build/forge-assets/jobs/alien-harvester-v1
exec
/bin/bash -lc 'python3 /tmp/alien-harvester-check/contract.py' in /home/claude-agent/forge-build/forge-assets/jobs/alien-harvester-v1
exec
/bin/bash -lc "node - <<'JS'
const fs=require('fs'),v=require('/tmp/alien-harvester-check/node_modules/gltf-validator');
v.validateBytes(new Uint8Array(fs.readFileSync('alien-harvester.glb')),{uri:'alien-harvester.glb',maxIssues:1000}).then(r=>{fs.writeFileSync('/tmp/alien-harvester-check/validator-current.json',JSON.stringify(r,null,2));console.log(JSON.stringify(r.issues));});
JS" in /home/claude-agent/forge-build/forge-assets/jobs/alien-harvester-v1
 succeeded in 107ms:
{
  "status": "PASS",
  "bytes": 11921220,
  "triangles": 184471,
  "materials": 6,
  "nodes": 14,
  "images": [
    [
      "Paint_Normal",
      1024,
      1024,
      1202157
    ],
    [
      "Paint_ORM",
      512,
      512,
      297703
    ],
    [
      "Paint_Base",
      1024,
      1024,
      213519
    ],
    [
      "Titanium_Normal",
      512,
      512,
      416976
    ],
    [
      "Titanium_ORM",
      512,
      512,
      298417
    ],
    [
      "Titanium_Base",
      1024,
      1024,
      43499
    ],
    [
      "HeatScorched_Normal",
      512,
      512,
      382499
    ],
    [
      "HeatScorched_ORM",
      512,
      512,
      235358
    ],
    [
      "HeatScorched_Base",
      1024,
      1024,
      94868
    ],
    [
      "Recess_ORM",
      512,
      512,
      297326
    ],
    [
      "Recess_Base",
      1024,
      1024,
      38878
    ]
  ],
  "bbox": {
    "min": [
      -79.99062,
      -66.86395,
      -210.00217
    ],
    "max": [
      80.00938,
      53.12891,
      210.0
    ],
    "size": [
      160.0,
      119.9929,
      420.0022
    ]
  }
}

 succeeded in 225ms:
{
  "file": "alien-harvester.glb",
  "sha256": "760220fbc798bdfdf2dca50987eccf0999b37415304d3b0910e0bce89d49c46c",
  "bytes": 11921220,
  "primitive_count": 30,
  "material_count": 6,
  "embedded_images": 11,
  "external_uris": [],
  "primitives": [
    {
      "mesh": "Arm_1",
      "primitive": 0,
      "triangles": 1836,
      "zero_area_triangles": 0,
      "nonfinite_attribute_components": 0
    },
    {
      "mesh": "Arm_1",
      "primitive": 1,
      "triangles": 3624,
      "zero_area_triangles": 0,
      "nonfinite_attribute_components": 0
    },
    {
      "mesh": "Arm_1",
      "primitive": 2,
      "triangles": 2536,
      "zero_area_triangles": 0,
      "nonfinite_attribute_components": 0
    },
    {
      "mesh": "Arm_1",
      "primitive": 3,
      "triangles": 1148,
      "zero_area_triangles": 0,
      "nonfinite_attribute_components": 0
    },
    {
      "mesh": "Arm_2",
      "primitive": 0,
      "triangles": 1836,
      "zero_area_triangles": 0,
      "nonfinite_attribute_components": 0
    },
    {
      "mesh": "Arm_2",
      "primitive": 1,
      "triangles": 3624,
      "zero_area_triangles": 0,
      "nonfinite_attribute_components": 0
    },
    {
      "mesh": "Arm_2",
      "primitive": 2,
      "triangles": 2536,
      "zero_area_triangles": 0,
      "nonfinite_attribute_components": 0
    },
    {
      "mesh": "Arm_2",
      "primitive": 3,
      "triangles": 1148,
      "zero_area_triangles": 0,
      "nonfinite_attribute_components": 0
    },
    {
      "mesh": "Arm_3",
      "primitive": 0,
      "triangles": 1836,
      "zero_area_triangles": 0,
      "nonfinite_attribute_components": 0
    },
    {
      "mesh": "Arm_3",
      "primitive": 1,
      "triangles": 3624,
      "zero_area_triangles": 0,
      "nonfinite_attribute_components": 0
    },
    {
      "mesh": "Arm_3",
      "primitive": 2,
      "triangles": 2536,
      "zero_area_triangles": 0,
      "nonfinite_attribute_components": 0
    },
    {
      "mesh": "Arm_3",
      "primitive": 3,
      "triangles": 1148,
      "zero_area_triangles": 0,
      "nonfinite_attribute_components": 0
    },
    {
      "mesh": "Arm_4",
      "primitive": 0,
      "triangles": 1836,
      "zero_area_triangles": 0,
      "nonfinite_attribute_components": 0
    },
    {
      "mesh": "Arm_4",
      "primitive": 1,
      "triangles": 3624,
      "zero_area_triangles": 0,
      "nonfinite_attribute_components": 0
    },
    {
      "mesh": "Arm_4",
      "primitive": 2,
      "triangles": 2536,
      "zero_area_triangles": 0,
      "nonfinite_attribute_components": 0
    },
    {
      "mesh": "Arm_4",
      "primitive": 3,
      "triangles": 1148,
      "zero_area_triangles": 0,
      "nonfinite_attribute_components": 0
    },
    {
      "mesh": "Arm_5",
      "primitive": 0,
      "triangles": 1836,
      "zero_area_triangles": 0,
      "nonfinite_attribute_components": 0
    },
    {
      "mesh": "Arm_5",
      "primitive": 1,
      "triangles": 3624,
      "zero_area_triangles": 0,
      "nonfinite_attribute_components": 0
    },
    {
      "mesh": "Arm_5",
      "primitive": 2,
      "triangles": 2536,
      "zero_area_triangles": 0,
      "nonfinite_attribute_components": 0
    },
    {
      "mesh": "Arm_5",
      "primitive": 3,
      "triangles": 1148,
      "zero_area_triangles": 0,
      "nonfinite_attribute_components": 0
    },
    {
      "mesh": "Arm_6",
      "primitive": 0,
      "triangles": 1836,
      "zero_area_triangles": 0,
      "nonfinite_attribute_components": 0
    },
    {
      "mesh": "Arm_6",
      "primitive": 1,
      "triangles": 3624,
      "zero_area_triangles": 0,
      "nonfinite_attribute_components": 0
    },
    {
      "mesh": "Arm_6",
      "primitive": 2,
      "triangles": 2536,
      "zero_area_triangles": 0,
      "nonfinite_attribute_components": 0
    },
    {
      "mesh": "Arm_6",
      "primitive": 3,
      "triangles": 1148,
      "zero_area_triangles": 0,
      "nonfinite_attribute_components": 0
    },
    {
      "mesh": "Hull",
      "primitive": 0,
      "triangles": 48094,
      "zero_area_triangles": 0,
      "nonfinite_attribute_components": 0
    },
    {
      "mesh": "Hull",
      "primitive": 1,
      "triangles": 25226,
      "zero_area_triangles": 0,
      "nonfinite_attribute_components": 0
    },
    {
      "mesh": "Hull",
      "primitive": 2,
      "triangles": 35426,
      "zero_area_triangles": 0,
      "nonfinite_attribute_components": 0
    },
    {
      "mesh": "Hull",
      "primitive": 3,
      "triangles": 10595,
      "zero_area_triangles": 0,
      "nonfinite_attribute_components": 0
    },
    {
      "mesh": "Hull",
      "primitive": 4,
      "triangles": 4722,
      "zero_area_triangles": 0,
      "nonfinite_attribute_components": 0
    },
    {
      "mesh": "Hull",
      "primitive": 5,
      "triangles": 5544,
      "zero_area_triangles": 0,
      "nonfinite_attribute_components": 0
    }
  ],
  "duplicate_primitives": [],
  "note": "Mesh-local counts, before node transforms/instances. Degenerate threshold: cross-product magnitude < 1e-12 in asset units squared. Not a source-topology or visual-quality verdict.",
  "triangles": 184471,
  "zero_area_triangles": 0,
  "nonfinite_attribute_components": 0,
  "findings": []
}

 succeeded in 479ms:
{"numErrors":0,"numWarnings":0,"numInfos":8,"numHints":0,"messages":[{"code":"UNUSED_MESH_TANGENT","message":"Tangents are not used because the material has no normal texture.","severity":2,"pointer":"/meshes/6/primitives/4/attributes/TANGENT"},{"code":"UNUSED_OBJECT","message":"This object may be unused.","severity":2,"pointer":"/meshes/6/primitives/4/attributes/TEXCOORD_0"},{"code":"UNUSED_MESH_TANGENT","message":"Tangents are not used because the material has no normal texture.","severity":2,"pointer":"/meshes/6/primitives/5/attributes/TANGENT"},{"code":"UNUSED_OBJECT","message":"This object may be unused.","severity":2,"pointer":"/meshes/6/primitives/5/attributes/TEXCOORD_0"},{"code":"NODE_EMPTY","message":"Empty node encountered.","severity":2,"pointer":"/nodes/6"},{"code":"NODE_EMPTY","message":"Empty node encountered.","severity":2,"pointer":"/nodes/10"},{"code":"NODE_EMPTY","message":"Empty node encountered.","severity":2,"pointer":"/nodes/11"},{"code":"NODE_EMPTY","message":"Empty node encountered.","severity":2,"pointer":"/nodes/12"}],"truncated":false}

hook: PreToolUse
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exec
/bin/bash -lc "sed -n '520,780p' build_alien-harvester.py" in /home/claude-agent/forge-build/forge-assets/jobs/alien-harvester-v1
 succeeded in 0ms:
            # One narrow spinal rail down every link; no free-floating greebles.
            lateral=Vector((side,0,0));tube(g,[a+lateral*r*.89,mid+lateral*(r+ .15),b+lateral*r*.79],[.3,.34,.22],2,6)
        # Twin flexor cables running continuously along the lower arm.
        for c in [-1,1]:
            cable=[p+Vector((c*rr[i]*.65,-rr[i]*.72,0)) for i,p in enumerate(pts)];tube(g,cable,.40,2,7)
        end=pts[-1];ellipsoid(g,end,(1.85,2.2,2.3),2,16,8)
        # Three hooked, cutting talons.
        for k in range(3):
            t=k*math.tau/3
            off=Vector((math.cos(t)*5.6,math.sin(t)*5.6,0))
            claw=catmull([end+off*.45,end+off*1.4+Vector((0,1,-3)),end+off*1.2+Vector((0,2,-7)),end+off*.55+Vector((0,2,-10))],4)
            tube(g,claw,[1.65*(1-i/(len(claw)-1))+.025 for i in range(len(claw))],2,10)
            edge=[p+off.normalized()*.23 for p in claw[-7:]];tube(g,edge,[.25,.23,.20,.16,.12,.08,.02],1,6)
        arms.append(g)

# Fine-scale industrial fittings: inset inspection panels, cooling combs, fasteners, pipes.
# All are seated into plates, spaced in belts leaving broad quiet areas of armour.
for side in [-1,1]:
    for j,yy in enumerate([-175,-136,-92,-60,-9,30,108,139,171]):
        theta=side*1.2;p=surface(yy,theta,2)
        n=Vector((math.sin(theta),0,math.cos(theta)));a=Vector((0,1,0));b=n.cross(a).normalized();B=Matrix(((a.x,b.x,n.x),(a.y,b.y,n.y),(a.z,b.z,n.z)))
        rounded_box(h,p,(2.5,3.3,.35),3,.18,B)
        rounded_box(h,p+n*.2,(2.15,2.8,.25),0,.13,B)
        for aa in [-.9,.9]:
            for bb in [-1.15,1.15]:
                q=p+a*aa+b*bb+n*.35;tube(h,[q,q+n*.10],.12,1,7)
        # Small slit receiver: the ship has no windows or cockpit.
        q=p+n*.4+b*(-.7);rounded_box(h,q,(.7,.14,.12),4,.045,B)
    for yy in [-150,-102,-63,-20,20,60,97,132]:
        theta=side*2.04;p=surface(yy,theta,1.5)
        n=Vector((math.sin(theta),0,math.cos(theta)));a=Vector((0,1,0));b=n.cross(a);B=Matrix(((a.x,b.x,n.x),(a.y,b.y,n.y),(a.z,b.z,n.z)))
        rounded_box(h,p,(14,4.4,1.2),3,.4,B)
        for k in range(8):rounded_box(h,p+a*((k-3.5)*1.45)+n*.7,(.68,3.5,.6),1,.18,B)
    # Long braided trunk pipes tucked into the shoulder seams.
    for theta in [side*.66,side*2.61]:
        pts=[surface(-145+i*300/36,theta,1.0) for i in range(37)];tube(h,pts,.55,2,8)
        for k in range(2,35,5):
            pp=pts[k];ring(h,pp,(0,1,0),.67,.12,1,12,6)
# Fine seam rivets follow aft upper-panel lips: human-scale on enormous plates.
for ya,yb in segments[1:-1]:
    for side in [-1,1]:
        for k in range(9):
            t=side*(.72+k*.055);p=surface(yb+4*math.sin(k/8*math.pi),t,2.0);n=Vector((math.sin(t),0,math.cos(t)))
            tube(h,[p,p+n*.26],.22,1,7)

log('Geometry authored '+str(sum(len(g.f) for g in [h]+arms))+' faces')
objs=[g.object() for g in [h]+arms];hull=objs[0]
# Normalize complete visible extents exactly to the requested envelope while keeping hull centre as origin.
bpy.context.view_layer.update()
points=[o.matrix_world@v.co for o in objs for v in o.data.vertices]
lo=Vector([min(v[k] for v in points) for k in range(3)]);hi=Vector([max(v[k] for v in points) for k in range(3)])
scale=Vector((160/(hi.x-lo.x),420/(hi.y-lo.y),120/(hi.z-lo.z)))
yshift=(hi.y+lo.y)/2
for ob in objs:
    pivot=ob.location.copy()
    for v in ob.data.vertices:
        wp=v.co+pivot;wp.y-=yshift;v.co=Vector([wp[k]*scale[k] for k in range(3)])-Vector([((pivot[k]-yshift) if k==1 else pivot[k])*scale[k] for k in range(3)])
    ob.location=Vector([((pivot[k]-yshift) if k==1 else pivot[k])*scale[k] for k in range(3)])
    if ob!=hull:ob.parent=hull
# Hull origin stays exactly zero; compensate the small centre shift into its mesh.
if hull.location.length:
    shift=hull.location.copy()
    for v in hull.data.vertices:v.co+=shift
    hull.location=(0,0,0)
# Explicitly no transforms applied to the moving nodes.
for ob in objs:
    select(ob);mod=ob.modifiers.new('Triangulated runtime surface','TRIANGULATE');bpy.ops.object.modifier_apply(modifier=mod.name)
    if ob==hull:
        dec=ob.modifiers.new('Runtime surface reduction','DECIMATE');dec.ratio=min(.90,(182000-sum(len(a.data.polygons)*2 for a in objs[1:]))/len(ob.data.polygons));dec.use_collapse_triangulate=True;bpy.ops.object.modifier_apply(modifier=dec.name)
    if ob==hull:
        weighted=ob.modifiers.new('Area weighted armour shading','WEIGHTED_NORMAL');weighted.keep_sharp=True;weighted.mode='FACE_AREA_WITH_ANGLE';weighted.weight=35
        bpy.ops.object.modifier_apply(modifier=weighted.name)
    me=ob.data;me.update();uv=me.uv_layers.active
    for f in me.polygons:
        ax=max(range(3),key=lambda k:abs(f.normal[k]));axes=[k for k in range(3) if k!=ax]
        for li in f.loop_indices:
            p=me.vertices[me.loops[li].vertex_index].co+ob.location;uv.data[li].uv=(p[axes[0]]/8,p[axes[1]]/8)

def worldp(p):
    p=Vector(p);p.y-=yshift;return Vector([p[k]*scale[k] for k in range(3)])
def empty(name,p,parent=hull):
    o=bpy.data.objects.new(name,None);sc.collection.objects.link(o);o.location=worldp(p);o.parent=parent;o.empty_display_size=2;return o
for i,p in enumerate(THRUSTERS):empty('Thruster_'+str(i+1),p)
empty('Camera_Chase',(0,315,110))
empty('Light_Nav_L',(63,5,1))['color']=[1.0,0.0,0.0];empty('Light_Nav_R',(-63,5,1))['color']=[0.0,1.0,0.0];empty('Light_Beacon',(0,34,50))['color']=[1.0,.12,.0]
asset=[o for o in sc.objects]
bpy.context.view_layer.update()
tri=sum(len(o.data.polygons) for o in objs)
log('Triangles '+str(tri))
assert 80000<=tri<=200000,tri

# Renderer setup: dark blue space gradient, white upper-left key and cool fill.
world=bpy.data.worlds.new('Deep space');sc.world=world;world.use_nodes=True
nt=world.node_tree;nt.nodes.clear();out=node(nt,'ShaderNodeOutputWorld');bg=node(nt,'ShaderNodeBackground');bg.inputs['Strength'].default_value=.32
tex=node(nt,'ShaderNodeTexCoord');sep=node(nt,'ShaderNodeSeparateXYZ');nt.links.new(tex.outputs['Normal'],sep.inputs[0])
ramp=node(nt,'ShaderNodeValToRGB');ramp.color_ramp.elements[0].position=.2;ramp.color_ramp.elements[0].color=(.007,.012,.024,1);ramp.color_ramp.elements[1].position=.9;ramp.color_ramp.elements[1].color=(.055,.085,.14,1);nt.links.new(sep.outputs['Z'],ramp.inputs[0]);nt.links.new(ramp.outputs[0],bg.inputs['Color']);nt.links.new(bg.outputs[0],out.inputs[0])
def area(name,loc,power,size,col,target=(0,0,0)):
    d=bpy.data.lights.new(name,'AREA');d.energy=power;d.shape='DISK';d.size=size;d.color=col;o=bpy.data.objects.new(name,d);sc.collection.objects.link(o);o.location=loc;o.rotation_euler=(Vector(target)-o.location).to_track_quat('-Z','Y').to_euler();return o
area('Key daylight',(180,-240,280),850000,180,(1,.93,.84))
area('Cool fill',(-190,-50,70),480000,230,(.51,.68,1))
area('Aft rim',(100,220,200),1250000,170,(.68,.8,1))
area('Under bounce',(40,-80,-200),290000,220,(.64,.72,.9))
camd=bpy.data.cameras.new('Render camera');cam=bpy.data.objects.new('Render camera',camd);sc.collection.objects.link(cam);sc.camera=cam;camd.clip_end=3000

def camera(kind='hero'):
    if kind=='hero':pos=(620,-460,180);target=(0,-6,-3);camd.type='ORTHO';camd.ortho_scale=470
    elif kind=='side':pos=(650,0,24);target=(0,0,-7);camd.type='ORTHO';camd.ortho_scale=466
    elif kind=='rear':pos=(325,490,180);target=(0,25,-3);camd.type='ORTHO';camd.ortho_scale=450
    else:pos=(139,-234,54);target=(34,-150,0);camd.type='ORTHO';camd.ortho_scale=130
    cam.location=pos;cam.rotation_euler=(Vector(target)-cam.location).to_track_quat('-Z','Y').to_euler()

def render(path,w=1920,hgt=1080,samples=32):
    sc.render.resolution_x=w;sc.render.resolution_y=hgt;sc.cycles.samples=samples;sc.render.filepath=str(OUT/path);log('Render '+str(path));bpy.ops.render.render(write_still=True)

# Paint is exported as a standard image + factor; the factor is patched into the binary JSON.
def set_paint(col):
    nt=MATS[0].node_tree;p=nt.nodes.get('Principled BSDF');t=nt.nodes.get('Base');mix=nt.nodes.get('Faction multiplier')
    if not mix:mix=node(nt,'ShaderNodeMixRGB');mix.name='Faction multiplier';mix.blend_type='MULTIPLY';mix.inputs[0].default_value=1;nt.links.new(t.outputs[0],mix.inputs[1])
    mix.inputs[2].default_value=(*col,1);nt.links.new(mix.outputs[0],p.inputs['Base Color'])

def export():
    nt=MATS[0].node_tree;p=nt.nodes.get('Principled BSDF');nt.links.new(nt.nodes['Base'].outputs[0],p.inputs['Base Color'])
    bpy.ops.object.select_all(action='DESELECT')
    for o in asset:o.select_set(True)
    bpy.context.view_layer.objects.active=hull
    fp=OUT/'alien-harvester.glb'
    bpy.ops.export_scene.gltf(filepath=str(fp),export_format='GLB',use_selection=True,export_yup=True,export_apply=False,export_texcoords=True,export_normals=True,export_tangents=True,export_materials='EXPORT',export_image_format='AUTO',export_cameras=False,export_lights=False,export_extras=True)
    data=fp.read_bytes();ln,tp=struct.unpack_from('<II',data,12);doc=json.loads(data[20:20+ln]);binary=data[28+ln:]
    # Normal/tangent vectors use signed normalized 16-bit values (<0.004 degree error).
    # Position/UV remain float32 in metres. KHR_mesh_quantization is supported by glTF loaders.
    compact={}
    for mesh in doc['meshes']:
        for prim in mesh['primitives']:
            for key in ['NORMAL','TANGENT']:
                if key not in prim['attributes']:continue
                ai=prim['attributes'][key];acc=doc['accessors'][ai];vi=acc['bufferView']
                if vi in compact:continue
                view=doc['bufferViews'][vi];dim=3 if key=='NORMAL' else 4
                assert acc['componentType']==5126 and acc.get('byteOffset',0)==0 and not view.get('byteStride')
                vals=np.frombuffer(binary,dtype='<f4',count=acc['count']*dim,offset=view['byteOffset']).reshape(-1,dim)
                if key=='TANGENT':
                    vals=vals.copy();bad=np.linalg.norm(vals[:,:3],axis=1)<.5
                    if bad.any():
                        na=doc['accessors'][prim['attributes']['NORMAL']];nv=doc['bufferViews'][na['bufferView']]
                        normals=np.frombuffer(binary,dtype='<f4',count=na['count']*3,offset=nv['byteOffset']).reshape(-1,3)[bad]
                        reference=np.eye(3)[np.argmin(np.abs(normals),axis=1)];fallback=np.cross(normals,reference);fallback/=np.linalg.norm(fallback,axis=1)[:,None]
                        vals[bad,:3]=fallback;vals[bad,3]=1;log('Repaired '+str(int(bad.sum()))+' collapsed UV tangent frames')
                packed=np.zeros((len(vals),4),dtype='<i2');packed[:,:dim]=np.rint(np.clip(vals,-1,1)*32767).astype('<i2')
                compact[vi]=packed.tobytes();acc['componentType']=5122;acc['normalized']=True;view['byteStride']=8
    rebuilt=bytearray()
    for vi,view in enumerate(doc['bufferViews']):
        payload=compact.get(vi,binary[view.get('byteOffset',0):view.get('byteOffset',0)+view['byteLength']])
        rebuilt.extend(b'\x00'*((-len(rebuilt))%4));view['byteOffset']=len(rebuilt);view['byteLength']=len(payload);rebuilt.extend(payload)
    rebuilt.extend(b'\x00'*((-len(rebuilt))%4));doc['buffers'][0]['byteLength']=len(rebuilt)
    for key in ['extensionsUsed','extensionsRequired']:
        doc.setdefault(key,[])
        if 'KHR_mesh_quantization' not in doc[key]:doc[key].append('KHR_mesh_quantization')
    for m in doc['materials']:
        if m['name']=='Paint':m['pbrMetallicRoughness']['baseColorFactor']=PAINTS[0][1]+[1]
    doc['asset']['copyright']='Original Forge alien harvester. CC0 Poly Haven: '+', '.join(PH_IDS)
    blob=json.dumps(doc,separators=(',',':')).encode();blob+=b' '*((-len(blob))%4)
    rest=struct.pack('<II',len(rebuilt),0x004e4942)+rebuilt
    fp.write_bytes(struct.pack('<III',0x46546c67,2,20+len(blob)+len(rest))+struct.pack('<II',len(blob),0x4e4f534a)+blob+rest)
    log('GLB bytes '+str(fp.stat().st_size));assert fp.stat().st_size<=12_000_000
    return doc

doc=export();set_paint(PAINTS[0][1])
comp=bpy.data.node_groups.new('Photographic emissive halo','CompositorNodeTree');sc.compositing_node_group=comp
comp.interface.new_socket(name='Image',in_out='OUTPUT',socket_type='NodeSocketColor')
rl=comp.nodes.new('CompositorNodeRLayers');glare=comp.nodes.new('CompositorNodeGlare');glare.inputs['Type'].default_value='Fog Glow';glare.inputs['Quality'].default_value='High';glare.inputs['Threshold'].default_value=1.1;glare.inputs['Strength'].default_value=.20;glare.inputs['Size'].default_value=.22
co=comp.nodes.new('NodeGroupOutput');comp.links.new(rl.outputs['Image'],glare.inputs['Image']);comp.links.new(glare.outputs['Image'],co.inputs['Image'])

def game(v):return [round(v.x,5),round(v.z,5),round(-v.y,5)]
points=[o.matrix_world@v.co for o in objs for v in o.data.vertices]
lo=[min(game(v)[k] for v in points) for k in range(3)];hi=[max(game(v)[k] for v in points) for k in range(3)]
nodeinfo={o.name:{'position':game(o.matrix_world.translation),'type':'mesh' if o.type=='MESH' else 'empty','parent':o.parent.name if o.parent else None} for o in asset}
meta={'asset':'alien-harvester','units':'metres','forward':'+Z','up':'+Y','left':'+X','origin':'Hull centre of mass approximation','nodes':nodeinfo,'bounding_box':{'min':lo,'max':hi,'size':[round(hi[k]-lo[k],4) for k in range(3)]},'axes':{o.name:[0,0,1] for o in objs[1:]},'paints':[{'name':n,'linear_rgb':c} for n,c in PAINTS],'triangles':tri,'materials':[m.name for m in MATS],'texture_world_repeat_metres':8,'bake':{'engine':'Cycles','device':'GPU','samples':16,'base_size':1024,'normal_sizes':[1024,512],'orm_size':512,'sources':PH_IDS},'checks':{'moving_transforms_applied':False,'pivot_rotation_degrees':30,'export_helpers':False}}
(OUT/'nodes.json').write_text(json.dumps(meta,indent=2))
(OUT/'NOTES.md').write_text('\n'.join([
'Original 420 × 160 × 120 m alien harvester: layered carapace, intake maw, amber cooling vents, dorsal spines, six pivoted arms and three engine sockets.',
f'{tri:,} triangles; seven named mesh nodes; GLB { (OUT/"alien-harvester.glb").stat().st_size/1048576:.2f} MiB; nose +Z, up +Y, left +X, metres.',
'Materials: Paint, Titanium, HeatScorched, Recess, Lamps, Engines; Paint neutral texture × linear faction colour, default [0.10, 0.11, 0.10].',
'Cycles GPU baked tiling sets: 1024² base-colour and Paint normal; shared 512² metal normals; 512² ORM; 8 m world-scale UV repeats; no unique hull atlas.',
'Poly Haven CC0 IDs: metal_plate, metal_plate_02, rusty_metal_02; https://polyhaven.com/license ; https://polyhaven.com/a/metal_plate ; https://polyhaven.com/a/metal_plate_02 ; https://polyhaven.com/a/rusty_metal_02 .',
'Reference differences: six larger harvesting arms as requested, bespoke overlapping armour layout and three recessed rear nozzles; no windows, lettering or logos.'
])+'\n')
# Clay first: verifies actual built silhouettes before the material presentation.
camera();clay=bpy.data.materials.new('QA clay');clay.diffuse_color=(.36,.36,.36,1);clay.use_nodes=True;clay.node_tree.nodes['Principled BSDF'].inputs['Roughness'].default_value=.72;clay.node_tree.nodes['Principled BSDF'].inputs['Base Color'].default_value=(.36,.36,.36,1)
sc.view_layers[0].material_override=clay;render('clay.png',1920,1080,24);sc.view_layers[0].material_override=None
render('final.png',1920,1080,40)
camera('side');render('side.png',1920,1080,28)
camera('rear');render('rear.png',1280,720,24)
camera('close');render('close.png',1280,720,28)
# Proof of whole-assembly articulation: rotate each root 30 degrees about game +Z = Blender -Y.
camera()
for ob in objs[1:]:ob.rotation_euler.y=math.radians(-30)
bpy.context.view_layer.update()
for ob in objs[1:]:
    assert max(abs(a-b) for a,b in zip(game(ob.matrix_world.translation),nodeinfo[ob.name]['position']))<1e-4, 'Root pivot moved'
render('arms-test.png',1280,720,24)
for ob in objs[1:]:ob.rotation_euler=(0,0,0)
# Six same-view paint renders assembled losslessly in Blender (no external dependency).
W,H=640,360;canvas=np.zeros((H*2,W*3,4),dtype=np.float32)
for i,(name,col) in enumerate(PAINTS):
    set_paint(col);render('paint-'+str(i)+'.png',W,H,16)
    im=bpy.data.images.load(str(OUT/('paint-'+str(i)+'.png')),check_existing=False);a=np.array(im.pixels[:],dtype=np.float32).reshape(H,W,4)
    row=1-i//3;column=i%3;canvas[row*H:(row+1)*H,column*W:(column+1)*W]=a;bpy.data.images.remove(im)
img=bpy.data.images.new('Paint comparison',width=W*3,height=H*2,alpha=True);img.pixels.foreach_set(canvas.ravel());img.filepath_raw=str(OUT/'paints.png');img.file_format='PNG';img.save()
set_paint(PAINTS[0][1]);camera();sc.render.resolution_x=1920;sc.render.resolution_y=1080
bpy.ops.wm.save_as_mainfile(filepath=str(OUT/'harvester-source.blend'))
log('COMPLETE')

codex
The GLB now passes validation with zero errors or warnings. The render still shows two issues worth fixing: armour crosses the rear vent opening, and the far-side arms are hard to see in the front view. I’m correcting those before the final export.
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/bin/bash -lc 'cp build_alien-harvester.py /tmp/alien-harvester-check/build-v4.py
cp final.png side.png clay.png close.png rear.png paints.png /tmp/alien-harvester-review/v4/' in /home/claude-agent/forge-build/forge-assets/jobs/alien-harvester-v1
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review-v3.txt
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/home/claude-agent/forge-build/forge-assets/jobs/alien-harvester-v1/build_alien-harvester.py
diff --git a/jobs/alien-harvester-v1/build_alien-harvester.py b/jobs/alien-harvester-v1/build_alien-harvester.py
index 2fd1298f86ec659e97961d76bdbc9f692a926df6..9d69fb03988eff592d23e2c28bccc5134bb04c93
--- a/jobs/alien-harvester-v1/build_alien-harvester.py
+++ b/jobs/alien-harvester-v1/build_alien-harvester.py
@@ -161,7 +161,7 @@
 # Identical metal stock normal bakes share one image in the delivered GLB.
 MATS[3].node_tree.nodes['Normal'].image=MATS[1].node_tree.nodes['Normal'].image
 
-for name,col,strength in [('Lamps',(1,.15,.008,1),2.3),('Engines',(1,.22,.018,1),2.2)]:
+for name,col,strength in [('Lamps',(1,.18,.004,1),1.8),('Engines',(1,.24,.009,1),1.8)]:
     m=bpy.data.materials.new(name);m.use_nodes=True;p=m.node_tree.nodes.get('Principled BSDF');p.inputs['Base Color'].default_value=col;p.inputs['Roughness'].default_value=.34;p.inputs['Metallic'].default_value=.3;p.inputs['Emission Color'].default_value=col;p.inputs['Emission Strength'].default_value=strength;MATS.append(m)
 
 class Geo:
@@ -350,8 +350,10 @@
     if cy>0:raw=[(-L*.53,-H*.29),(-L*.36,H*.45),(L*.41,H*.42),(L*.52,H*.23),(L*.45,-H*.31),(L*.21,-H*.46),(-L*.35,-H*.43)]
     p2=catmull([(y,0,z) for y,z in raw+[raw[0],raw[1]]],4)[:-4]
     p2=p2[:-1] if (p2[0]-p2[-1]).length<.01 else p2
-    cx=shape(cy)[0]*1.05-.5
-    ringspec=[(.96,0), (1.08,2.3),(1.04,5.4),(.87,6.5),(.79,4.8),(.79,1.8)]
+    # Seat the back into the shell, but keep the entire opening in front of all
+    # overlapping armour, including the broad shoulder at the forward end.
+    cx=max(shape(cy-L*.58+i*L*1.16/32)[0] for i in range(33))*1.05+3.3
+    ringspec=[(.96,-8.0), (1.08,1.2),(1.04,5.4),(.87,6.5),(.79,4.8),(.79,1.8)]
     vs=[];n=len(p2)
     for scale,depth in ringspec:
         for p in p2:vs.append((sign*(cx+depth),cy+p.x*scale,cz+p.z*scale))
@@ -412,8 +414,8 @@
     for j in range(6):
         u=j/5;r=26.1-7*u;a=t+.085*u;pts.append((r*math.cos(a),-201+11*u,r*.89*math.sin(a)))
     tube(h,pts,[.90,1.05,.98,.81,.54,.23],2,9)
-    lit=[Vector(p)+Vector((-.16*math.cos(t),-.72,-.16*math.sin(t))) for p in pts]
-    tube(h,lit,[.29,.46,.44,.38,.24,.08],4,7)
+    lit=[Vector(p)+Vector((-.16*math.cos(t),-.98,-.16*math.sin(t))) for p in pts]
+    tube(h,lit,[.46,.65,.61,.47,.27,.08],4,8)
     # Dark rib continuing down the gullet from each luminous tooth.
     pts2=[]
     for j in range(6):
@@ -454,7 +456,7 @@
         theta=row*.43;base=surface(yy+row*3,theta,2.0);ht=(23 if row==0 else 18)*math.sin((i+1)/9*math.pi)**.5*(1+.10*math.sin(i*2.7))
         pts=catmull([base,base+Vector((row*2,3,ht*.4)),base+Vector((row*5,11,ht*.78)),base+Vector((row*7,21,ht))],5)
         rr=[3.6*(1-j/(len(pts)-1))**1.05+.035 for j in range(len(pts))]
-        tube(h,pts,rr,2,10,.66);ellipsoid(h,base,(5.3,7.8,2.8),0,18,8)
+        tube(h,pts,rr,2,12,ellipse=.66);ellipsoid(h,base,(5.3,7.8,2.8),0,18,8)
         ring(h,base+Vector((0,0,1.8)),(0,0,1),4.1,.6,2,24,7,1.25)
         tube(h,[base+Vector((row*2,0,1)),base+Vector((row*3,4,ht*.36)),base+Vector((row*5,11,ht*.7))],[.35,.28,.05],1,6)
 
@@ -462,7 +464,7 @@
 for s in [-1,1]:
     for zz in [-14,15]:
         pts=catmull([(s*28,132,zz),(s*31,163,zz*1.1),(s*26,189,zz*1.08),(s*21,211,zz*.9)],6)
-        rr=[6*(1-i/(len(pts)-1))**.8+.07 for i in range(len(pts))];tube(h,pts,rr,0,14,.58)
+        rr=[6*(1-i/(len(pts)-1))**.8+.07 for i in range(len(pts))];tube(h,pts,rr,0,14,ellipse=.58)
         tube(h,[p+Vector((0,0,2.2 if zz>0 else -2.2)) for p in pts[:-3]],[.30]*len(pts[:-3]),1,6)
 
 # Three main engines, bevelled ring exits, recessed glowing interiors.
@@ -507,6 +509,10 @@
         if side<0:dy=[v+5*math.sin(k*1.4+j) for k,v in enumerate(dy)]
         curl=[(6,dy[0],-12),(18-j,dy[1],-26),(30-j*4,dy[2],-39-j*2),(26-j*4,dy[3],-50-j*2),(16+j,dy[4],-54-j+(3 if side<0 else 0))]
         if j==2:curl=[(5,dy[0],-12),(13,dy[1],-23),(28,dy[2],-34),(28,dy[3],-48),(14,dy[4],-59)]
+        if side<0:
+            # A second, lower fan gives six distinct hanging silhouettes, with
+            # different tip heights rather than three mirrored hidden limbs.
+            curl=[(x*1.13,dy-12,dz*(1.24+.055*j)) for x,dy,dz in curl]
         points=[root]+[root+Vector((side*x,dy,dz)) for x,dy,dz in curl]
         pts=catmull(points,7);N=len(pts)
         rr=[6.5*(1-i/(N-1))+.95 for i in range(N)]
@@ -515,7 +521,7 @@
         for k in range(0,N-2,2):
             a,b=pts[k],pts[min(k+2,N-1)];mid=(a+b)/2;direction=(b-a).normalized();length=(b-a).length
             r=rr[k]+.4
-            tube(g,[a,a+direction*.5,b-direction*.55,b],[r*.91,r*1.08,r*1.02,r*.85],0,14,.88)
+            tube(g,[a,a+direction*.5,b-direction*.55,b],[r*.91,r*1.08,r*1.02,r*.85],0,14,ellipse=.88)
             ring(g,a+direction*.6,direction,r*1.02,.22,1,14,6,.88)
             # One narrow spinal rail down every link; no free-floating greebles.
             lateral=Vector((side,0,0));tube(g,[a+lateral*r*.89,mid+lateral*(r+ .15),b+lateral*r*.79],[.3,.34,.22],2,6)
@@ -585,7 +591,7 @@
 for ob in objs:
     select(ob);mod=ob.modifiers.new('Triangulated runtime surface','TRIANGULATE');bpy.ops.object.modifier_apply(modifier=mod.name)
     if ob==hull:
-        dec=ob.modifiers.new('Runtime surface reduction','DECIMATE');dec.ratio=min(.90,(182000-sum(len(a.data.polygons)*2 for a in objs[1:]))/len(ob.data.polygons));dec.use_collapse_triangulate=True;bpy.ops.object.modifier_apply(modifier=dec.name)
+        dec=ob.modifiers.new('Runtime surface reduction','DECIMATE');dec.ratio=min(.90,(178000-sum(len(a.data.polygons)*2 for a in objs[1:]))/len(ob.data.polygons));dec.use_collapse_triangulate=True;bpy.ops.object.modifier_apply(modifier=dec.name)
     if ob==hull:
         weighted=ob.modifiers.new('Area weighted armour shading','WEIGHTED_NORMAL');weighted.keep_sharp=True;weighted.mode='FACE_AREA_WITH_ANGLE';weighted.weight=35
         bpy.ops.object.modifier_apply(modifier=weighted.name)
@@ -601,7 +607,7 @@
     o=bpy.data.objects.new(name,None);sc.collection.objects.link(o);o.location=worldp(p);o.parent=parent;o.empty_display_size=2;return o
 for i,p in enumerate(THRUSTERS):empty('Thruster_'+str(i+1),p)
 empty('Camera_Chase',(0,315,110))
-empty('Light_Nav_L',(63,5,1))['color']=[1.0,0.0,0.0];empty('Light_Nav_R',(-63,5,1))['color']=[0.0,1.0,0.0];empty('Light_Beacon',(0,34,50))['color']=[1.0,.12,.0]
+empty('Light_Nav_L',(63,5,1))['color']=[1.0,0.0,0.0];empty('Light_Nav_R',(-63,5,1))['color']=[0.0,1.0,0.0];empty('Light_Beacon',surface(34,0,5))['color']=[1.0,.12,.0]
 asset=[o for o in sc.objects]
 bpy.context.view_layer.update()
 tri=sum(len(o.data.polygons) for o in objs)

hook: PreToolUse
hook: PreToolUse
hook: PreToolUse
hook: PreToolUse
hook: PreToolUse Completed
hook: PreToolUse Completed
hook: PreToolUse Completed
hook: PreToolUse Completed
exec
/bin/bash -lc 'python3 -m py_compile build_alien-harvester.py' in /home/claude-agent/forge-build/forge-assets/jobs/alien-harvester-v1
 succeeded in 0ms:
diff --git a/jobs/alien-harvester-v1/build_alien-harvester.py b/jobs/alien-harvester-v1/build_alien-harvester.py
index 2fd1298f86ec659e97961d76bdbc9f692a926df6..9d69fb03988eff592d23e2c28bccc5134bb04c93
--- a/jobs/alien-harvester-v1/build_alien-harvester.py
+++ b/jobs/alien-harvester-v1/build_alien-harvester.py
@@ -161,7 +161,7 @@
 # Identical metal stock normal bakes share one image in the delivered GLB.
 MATS[3].node_tree.nodes['Normal'].image=MATS[1].node_tree.nodes['Normal'].image
 
-for name,col,strength in [('Lamps',(1,.15,.008,1),2.3),('Engines',(1,.22,.018,1),2.2)]:
+for name,col,strength in [('Lamps',(1,.18,.004,1),1.8),('Engines',(1,.24,.009,1),1.8)]:
     m=bpy.data.materials.new(name);m.use_nodes=True;p=m.node_tree.nodes.get('Principled BSDF');p.inputs['Base Color'].default_value=col;p.inputs['Roughness'].default_value=.34;p.inputs['Metallic'].default_value=.3;p.inputs['Emission Color'].default_value=col;p.inputs['Emission Strength'].default_value=strength;MATS.append(m)
 
 class Geo:
@@ -350,8 +350,10 @@
     if cy>0:raw=[(-L*.53,-H*.29),(-L*.36,H*.45),(L*.41,H*.42),(L*.52,H*.23),(L*.45,-H*.31),(L*.21,-H*.46),(-L*.35,-H*.43)]
     p2=catmull([(y,0,z) for y,z in raw+[raw[0],raw[1]]],4)[:-4]
     p2=p2[:-1] if (p2[0]-p2[-1]).length<.01 else p2
-    cx=shape(cy)[0]*1.05-.5
-    ringspec=[(.96,0), (1.08,2.3),(1.04,5.4),(.87,6.5),(.79,4.8),(.79,1.8)]
+    # Seat the back into the shell, but keep the entire opening in front of all
+    # overlapping armour, including the broad shoulder at the forward end.
+    cx=max(shape(cy-L*.58+i*L*1.16/32)[0] for i in range(33))*1.05+3.3
+    ringspec=[(.96,-8.0), (1.08,1.2),(1.04,5.4),(.87,6.5),(.79,4.8),(.79,1.8)]
     vs=[];n=len(p2)
     for scale,depth in ringspec:
         for p in p2:vs.append((sign*(cx+depth),cy+p.x*scale,cz+p.z*scale))
@@ -412,8 +414,8 @@
     for j in range(6):
         u=j/5;r=26.1-7*u;a=t+.085*u;pts.append((r*math.cos(a),-201+11*u,r*.89*math.sin(a)))
     tube(h,pts,[.90,1.05,.98,.81,.54,.23],2,9)
-    lit=[Vector(p)+Vector((-.16*math.cos(t),-.72,-.16*math.sin(t))) for p in pts]
-    tube(h,lit,[.29,.46,.44,.38,.24,.08],4,7)
+    lit=[Vector(p)+Vector((-.16*math.cos(t),-.98,-.16*math.sin(t))) for p in pts]
+    tube(h,lit,[.46,.65,.61,.47,.27,.08],4,8)
     # Dark rib continuing down the gullet from each luminous tooth.
     pts2=[]
     for j in range(6):
@@ -454,7 +456,7 @@
         theta=row*.43;base=surface(yy+row*3,theta,2.0);ht=(23 if row==0 else 18)*math.sin((i+1)/9*math.pi)**.5*(1+.10*math.sin(i*2.7))
         pts=catmull([base,base+Vector((row*2,3,ht*.4)),base+Vector((row*5,11,ht*.78)),base+Vector((row*7,21,ht))],5)
         rr=[3.6*(1-j/(len(pts)-1))**1.05+.035 for j in range(len(pts))]
-        tube(h,pts,rr,2,10,.66);ellipsoid(h,base,(5.3,7.8,2.8),0,18,8)
+        tube(h,pts,rr,2,12,ellipse=.66);ellipsoid(h,base,(5.3,7.8,2.8),0,18,8)
         ring(h,base+Vector((0,0,1.8)),(0,0,1),4.1,.6,2,24,7,1.25)
         tube(h,[base+Vector((row*2,0,1)),base+Vector((row*3,4,ht*.36)),base+Vector((row*5,11,ht*.7))],[.35,.28,.05],1,6)
 
@@ -462,7 +464,7 @@
 for s in [-1,1]:
     for zz in [-14,15]:
         pts=catmull([(s*28,132,zz),(s*31,163,zz*1.1),(s*26,189,zz*1.08),(s*21,211,zz*.9)],6)
-        rr=[6*(1-i/(len(pts)-1))**.8+.07 for i in range(len(pts))];tube(h,pts,rr,0,14,.58)
+        rr=[6*(1-i/(len(pts)-1))**.8+.07 for i in range(len(pts))];tube(h,pts,rr,0,14,ellipse=.58)
         tube(h,[p+Vector((0,0,2.2 if zz>0 else -2.2)) for p in pts[:-3]],[.30]*len(pts[:-3]),1,6)
 
 # Three main engines, bevelled ring exits, recessed glowing interiors.
@@ -507,6 +509,10 @@
         if side<0:dy=[v+5*math.sin(k*1.4+j) for k,v in enumerate(dy)]
         curl=[(6,dy[0],-12),(18-j,dy[1],-26),(30-j*4,dy[2],-39-j*2),(26-j*4,dy[3],-50-j*2),(16+j,dy[4],-54-j+(3 if side<0 else 0))]
         if j==2:curl=[(5,dy[0],-12),(13,dy[1],-23),(28,dy[2],-34),(28,dy[3],-48),(14,dy[4],-59)]
+        if side<0:
+            # A second, lower fan gives six distinct hanging silhouettes, with
+            # different tip heights rather than three mirrored hidden limbs.
+            curl=[(x*1.13,dy-12,dz*(1.24+.055*j)) for x,dy,dz in curl]
         points=[root]+[root+Vector((side*x,dy,dz)) for x,dy,dz in curl]
         pts=catmull(points,7);N=len(pts)
         rr=[6.5*(1-i/(N-1))+.95 for i in range(N)]
@@ -515,7 +521,7 @@
         for k in range(0,N-2,2):
             a,b=pts[k],pts[min(k+2,N-1)];mid=(a+b)/2;direction=(b-a).normalized();length=(b-a).length
             r=rr[k]+.4
-            tube(g,[a,a+direction*.5,b-direction*.55,b],[r*.91,r*1.08,r*1.02,r*.85],0,14,.88)
+            tube(g,[a,a+direction*.5,b-direction*.55,b],[r*.91,r*1.08,r*1.02,r*.85],0,14,ellipse=.88)
             ring(g,a+direction*.6,direction,r*1.02,.22,1,14,6,.88)
             # One narrow spinal rail down every link; no free-floating greebles.
             lateral=Vector((side,0,0));tube(g,[a+lateral*r*.89,mid+lateral*(r+ .15),b+lateral*r*.79],[.3,.34,.22],2,6)
@@ -585,7 +591,7 @@
 for ob in objs:
     select(ob);mod=ob.modifiers.new('Triangulated runtime surface','TRIANGULATE');bpy.ops.object.modifier_apply(modifier=mod.name)
     if ob==hull:
-        dec=ob.modifiers.new('Runtime surface reduction','DECIMATE');dec.ratio=min(.90,(182000-sum(len(a.data.polygons)*2 for a in objs[1:]))/len(ob.data.polygons));dec.use_collapse_triangulate=True;bpy.ops.object.modifier_apply(modifier=dec.name)
+        dec=ob.modifiers.new('Runtime surface reduction','DECIMATE');dec.ratio=min(.90,(178000-sum(len(a.data.polygons)*2 for a in objs[1:]))/len(ob.data.polygons));dec.use_collapse_triangulate=True;bpy.ops.object.modifier_apply(modifier=dec.name)
     if ob==hull:
         weighted=ob.modifiers.new('Area weighted armour shading','WEIGHTED_NORMAL');weighted.keep_sharp=True;weighted.mode='FACE_AREA_WITH_ANGLE';weighted.weight=35
         bpy.ops.object.modifier_apply(modifier=weighted.name)
@@ -601,7 +607,7 @@
     o=bpy.data.objects.new(name,None);sc.collection.objects.link(o);o.location=worldp(p);o.parent=parent;o.empty_display_size=2;return o
 for i,p in enumerate(THRUSTERS):empty('Thruster_'+str(i+1),p)
 empty('Camera_Chase',(0,315,110))
-empty('Light_Nav_L',(63,5,1))['color']=[1.0,0.0,0.0];empty('Light_Nav_R',(-63,5,1))['color']=[0.0,1.0,0.0];empty('Light_Beacon',(0,34,50))['color']=[1.0,.12,.0]
+empty('Light_Nav_L',(63,5,1))['color']=[1.0,0.0,0.0];empty('Light_Nav_R',(-63,5,1))['color']=[0.0,1.0,0.0];empty('Light_Beacon',surface(34,0,5))['color']=[1.0,.12,.0]
 asset=[o for o in sc.objects]
 bpy.context.view_layer.update()
 tri=sum(len(o.data.polygons) for o in objs)

hook: PreToolUse
hook: PreToolUse
hook: PreToolUse
hook: PreToolUse Completed
hook: PreToolUse Completed
hook: PreToolUse Completed
apply patch
patch: completed
/home/claude-agent/forge-build/forge-assets/jobs/alien-harvester-v1/build_alien-harvester.py
diff --git a/jobs/alien-harvester-v1/build_alien-harvester.py b/jobs/alien-harvester-v1/build_alien-harvester.py
index 2fd1298f86ec659e97961d76bdbc9f692a926df6..6e2b4e3d937bd42542695df9d07d2d1f4779682a
--- a/jobs/alien-harvester-v1/build_alien-harvester.py
+++ b/jobs/alien-harvester-v1/build_alien-harvester.py
@@ -161,7 +161,7 @@
 # Identical metal stock normal bakes share one image in the delivered GLB.
 MATS[3].node_tree.nodes['Normal'].image=MATS[1].node_tree.nodes['Normal'].image
 
-for name,col,strength in [('Lamps',(1,.15,.008,1),2.3),('Engines',(1,.22,.018,1),2.2)]:
+for name,col,strength in [('Lamps',(1,.18,.004,1),1.8),('Engines',(1,.24,.009,1),1.8)]:
     m=bpy.data.materials.new(name);m.use_nodes=True;p=m.node_tree.nodes.get('Principled BSDF');p.inputs['Base Color'].default_value=col;p.inputs['Roughness'].default_value=.34;p.inputs['Metallic'].default_value=.3;p.inputs['Emission Color'].default_value=col;p.inputs['Emission Strength'].default_value=strength;MATS.append(m)
 
 class Geo:
@@ -271,7 +271,11 @@
     for i in range(len(profile)-1):
         a,b=profile[i:i+2]
         if a[0]<=y<=b[0]:
-            t=(y-a[0])/(b[0]-a[0]);t=t*t*(3-2*t);return tuple(a[k]*(1-t)+b[k]*t for k in range(1,4))
+            # C1-continuous loft: no flattened shoulder or pinched ring at each
+            # control station, and the overlaid armour uses the identical skin.
+            prev=profile[max(0,i-1)];nxt=profile[min(len(profile)-1,i+2)]
+            span=b[0]-a[0];t=(y-a[0])/span
+            return tuple((2*t**3-3*t*t+1)*a[k]+(t**3-2*t*t+t)*span*(b[k]-prev[k])/(b[0]-prev[0])+(-2*t**3+3*t*t)*b[k]+(t**3-t*t)*span*(nxt[k]-a[k])/(nxt[0]-a[0]) for k in range(1,4))
     return profile[0][1:] if y<profile[0][0] else profile[-1][1:]
 def surface(y,t,offset=0):
     w,z,c=shape(y);return Vector(((w*1.05+offset)*math.sin(t),y,c+(z*1.30+offset)*math.cos(t)))
@@ -350,8 +354,10 @@
     if cy>0:raw=[(-L*.53,-H*.29),(-L*.36,H*.45),(L*.41,H*.42),(L*.52,H*.23),(L*.45,-H*.31),(L*.21,-H*.46),(-L*.35,-H*.43)]
     p2=catmull([(y,0,z) for y,z in raw+[raw[0],raw[1]]],4)[:-4]
     p2=p2[:-1] if (p2[0]-p2[-1]).length<.01 else p2
-    cx=shape(cy)[0]*1.05-.5
-    ringspec=[(.96,0), (1.08,2.3),(1.04,5.4),(.87,6.5),(.79,4.8),(.79,1.8)]
+    # Seat the back into the shell, but keep the entire opening in front of all
+    # overlapping armour, including the broad shoulder at the forward end.
+    cx=max(shape(cy-L*.58+i*L*1.16/32)[0] for i in range(33))*1.05+3.3
+    ringspec=[(.96,-8.0), (1.08,1.2),(1.04,5.4),(.87,6.5),(.79,4.8),(.79,1.8)]
     vs=[];n=len(p2)
     for scale,depth in ringspec:
         for p in p2:vs.append((sign*(cx+depth),cy+p.x*scale,cz+p.z*scale))
@@ -412,8 +418,8 @@
     for j in range(6):
         u=j/5;r=26.1-7*u;a=t+.085*u;pts.append((r*math.cos(a),-201+11*u,r*.89*math.sin(a)))
     tube(h,pts,[.90,1.05,.98,.81,.54,.23],2,9)
-    lit=[Vector(p)+Vector((-.16*math.cos(t),-.72,-.16*math.sin(t))) for p in pts]
-    tube(h,lit,[.29,.46,.44,.38,.24,.08],4,7)
+    lit=[Vector(p)+Vector((-.16*math.cos(t),-.98,-.16*math.sin(t))) for p in pts]
+    tube(h,lit,[.46,.65,.61,.47,.27,.08],4,8)
     # Dark rib continuing down the gullet from each luminous tooth.
     pts2=[]
     for j in range(6):
@@ -454,7 +460,7 @@
         theta=row*.43;base=surface(yy+row*3,theta,2.0);ht=(23 if row==0 else 18)*math.sin((i+1)/9*math.pi)**.5*(1+.10*math.sin(i*2.7))
         pts=catmull([base,base+Vector((row*2,3,ht*.4)),base+Vector((row*5,11,ht*.78)),base+Vector((row*7,21,ht))],5)
         rr=[3.6*(1-j/(len(pts)-1))**1.05+.035 for j in range(len(pts))]
-        tube(h,pts,rr,2,10,.66);ellipsoid(h,base,(5.3,7.8,2.8),0,18,8)
+        tube(h,pts,rr,2,12,ellipse=.66);ellipsoid(h,base,(5.3,7.8,2.8),0,18,8)
         ring(h,base+Vector((0,0,1.8)),(0,0,1),4.1,.6,2,24,7,1.25)
         tube(h,[base+Vector((row*2,0,1)),base+Vector((row*3,4,ht*.36)),base+Vector((row*5,11,ht*.7))],[.35,.28,.05],1,6)
 
@@ -462,7 +468,7 @@
 for s in [-1,1]:
     for zz in [-14,15]:
         pts=catmull([(s*28,132,zz),(s*31,163,zz*1.1),(s*26,189,zz*1.08),(s*21,211,zz*.9)],6)
-        rr=[6*(1-i/(len(pts)-1))**.8+.07 for i in range(len(pts))];tube(h,pts,rr,0,14,.58)
+        rr=[6*(1-i/(len(pts)-1))**.8+.07 for i in range(len(pts))];tube(h,pts,rr,0,14,ellipse=.58)
         tube(h,[p+Vector((0,0,2.2 if zz>0 else -2.2)) for p in pts[:-3]],[.30]*len(pts[:-3]),1,6)
 
 # Three main engines, bevelled ring exits, recessed glowing interiors.
@@ -507,6 +513,10 @@
         if side<0:dy=[v+5*math.sin(k*1.4+j) for k,v in enumerate(dy)]
         curl=[(6,dy[0],-12),(18-j,dy[1],-26),(30-j*4,dy[2],-39-j*2),(26-j*4,dy[3],-50-j*2),(16+j,dy[4],-54-j+(3 if side<0 else 0))]
         if j==2:curl=[(5,dy[0],-12),(13,dy[1],-23),(28,dy[2],-34),(28,dy[3],-48),(14,dy[4],-59)]
+        if side<0:
+            # A second, lower fan gives six distinct hanging silhouettes, with
+            # different tip heights rather than three mirrored hidden limbs.
+            curl=[(x*1.13,dy-12,dz*(1.24+.055*j)) for x,dy,dz in curl]
         points=[root]+[root+Vector((side*x,dy,dz)) for x,dy,dz in curl]
         pts=catmull(points,7);N=len(pts)
         rr=[6.5*(1-i/(N-1))+.95 for i in range(N)]
@@ -515,7 +525,7 @@
         for k in range(0,N-2,2):
             a,b=pts[k],pts[min(k+2,N-1)];mid=(a+b)/2;direction=(b-a).normalized();length=(b-a).length
             r=rr[k]+.4
-            tube(g,[a,a+direction*.5,b-direction*.55,b],[r*.91,r*1.08,r*1.02,r*.85],0,14,.88)
+            tube(g,[a,a+direction*.5,b-direction*.55,b],[r*.91,r*1.08,r*1.02,r*.85],0,14,ellipse=.88)
             ring(g,a+direction*.6,direction,r*1.02,.22,1,14,6,.88)
             # One narrow spinal rail down every link; no free-floating greebles.
             lateral=Vector((side,0,0));tube(g,[a+lateral*r*.89,mid+lateral*(r+ .15),b+lateral*r*.79],[.3,.34,.22],2,6)
@@ -585,7 +595,7 @@
 for ob in objs:
     select(ob);mod=ob.modifiers.new('Triangulated runtime surface','TRIANGULATE');bpy.ops.object.modifier_apply(modifier=mod.name)
     if ob==hull:
-        dec=ob.modifiers.new('Runtime surface reduction','DECIMATE');dec.ratio=min(.90,(182000-sum(len(a.data.polygons)*2 for a in objs[1:]))/len(ob.data.polygons));dec.use_collapse_triangulate=True;bpy.ops.object.modifier_apply(modifier=dec.name)
+        dec=ob.modifiers.new('Runtime surface reduction','DECIMATE');dec.ratio=min(.90,(178000-sum(len(a.data.polygons)*2 for a in objs[1:]))/len(ob.data.polygons));dec.use_collapse_triangulate=True;bpy.ops.object.modifier_apply(modifier=dec.name)
     if ob==hull:
         weighted=ob.modifiers.new('Area weighted armour shading','WEIGHTED_NORMAL');weighted.keep_sharp=True;weighted.mode='FACE_AREA_WITH_ANGLE';weighted.weight=35
         bpy.ops.object.modifier_apply(modifier=weighted.name)
@@ -601,7 +611,7 @@
     o=bpy.data.objects.new(name,None);sc.collection.objects.link(o);o.location=worldp(p);o.parent=parent;o.empty_display_size=2;return o
 for i,p in enumerate(THRUSTERS):empty('Thruster_'+str(i+1),p)
 empty('Camera_Chase',(0,315,110))
-empty('Light_Nav_L',(63,5,1))['color']=[1.0,0.0,0.0];empty('Light_Nav_R',(-63,5,1))['color']=[0.0,1.0,0.0];empty('Light_Beacon',(0,34,50))['color']=[1.0,.12,.0]
+empty('Light_Nav_L',(63,5,1))['color']=[1.0,0.0,0.0];empty('Light_Nav_R',(-63,5,1))['color']=[0.0,1.0,0.0];empty('Light_Beacon',surface(34,0,5))['color']=[1.0,.12,.0]
 asset=[o for o in sc.objects]
 bpy.context.view_layer.update()
 tri=sum(len(o.data.polygons) for o in objs)

hook: PreToolUse
hook: PreToolUse
hook: PreToolUse
hook: PreToolUse
hook: PreToolUse Completed
hook: PreToolUse Completed
hook: PreToolUse Completed
hook: PreToolUse Completed
exec
/bin/bash -lc 'scp build_alien-harvester.py gex44:/root/fal-author/alien-harvester-v1/' in /home/claude-agent/forge-build/forge-assets/jobs/alien-harvester-v1
 succeeded in 772ms:
hook: PreToolUse
hook: PreToolUse
hook: PreToolUse
hook: PreToolUse
hook: PreToolUse Completed
hook: PreToolUse Completed
hook: PreToolUse Completed
hook: PreToolUse Completed
exec
/bin/bash -lc "ssh gex44 '/root/blender-spike/blender-5.2.0-linux-x64/blender -b --python-exit-code 1 --python /root/fal-author/alien-harvester-v1/build_alien-harvester.py > /root/fal-author/alien-harvester-v1/build.log 2>&1'" in /home/claude-agent/forge-build/forge-assets/jobs/alien-harvester-v1
diff --git a/jobs/alien-harvester-v1/build_alien-harvester.py b/jobs/alien-harvester-v1/build_alien-harvester.py
index 2fd1298f86ec659e97961d76bdbc9f692a926df6..6e2b4e3d937bd42542695df9d07d2d1f4779682a
--- a/jobs/alien-harvester-v1/build_alien-harvester.py
+++ b/jobs/alien-harvester-v1/build_alien-harvester.py
@@ -161,7 +161,7 @@
 # Identical metal stock normal bakes share one image in the delivered GLB.
 MATS[3].node_tree.nodes['Normal'].image=MATS[1].node_tree.nodes['Normal'].image
 
-for name,col,strength in [('Lamps',(1,.15,.008,1),2.3),('Engines',(1,.22,.018,1),2.2)]:
+for name,col,strength in [('Lamps',(1,.18,.004,1),1.8),('Engines',(1,.24,.009,1),1.8)]:
     m=bpy.data.materials.new(name);m.use_nodes=True;p=m.node_tree.nodes.get('Principled BSDF');p.inputs['Base Color'].default_value=col;p.inputs['Roughness'].default_value=.34;p.inputs['Metallic'].default_value=.3;p.inputs['Emission Color'].default_value=col;p.inputs['Emission Strength'].default_value=strength;MATS.append(m)
 
 class Geo:
@@ -271,7 +271,11 @@
     for i in range(len(profile)-1):
         a,b=profile[i:i+2]
         if a[0]<=y<=b[0]:
-            t=(y-a[0])/(b[0]-a[0]);t=t*t*(3-2*t);return tuple(a[k]*(1-t)+b[k]*t for k in range(1,4))
+            # C1-continuous loft: no flattened shoulder or pinched ring at each
+            # control station, and the overlaid armour uses the identical skin.
+            prev=profile[max(0,i-1)];nxt=profile[min(len(profile)-1,i+2)]
+            span=b[0]-a[0];t=(y-a[0])/span
+            return tuple((2*t**3-3*t*t+1)*a[k]+(t**3-2*t*t+t)*span*(b[k]-prev[k])/(b[0]-prev[0])+(-2*t**3+3*t*t)*b[k]+(t**3-t*t)*span*(nxt[k]-a[k])/(nxt[0]-a[0]) for k in range(1,4))
     return profile[0][1:] if y<profile[0][0] else profile[-1][1:]
 def surface(y,t,offset=0):
     w,z,c=shape(y);return Vector(((w*1.05+offset)*math.sin(t),y,c+(z*1.30+offset)*math.cos(t)))
@@ -350,8 +354,10 @@
     if cy>0:raw=[(-L*.53,-H*.29),(-L*.36,H*.45),(L*.41,H*.42),(L*.52,H*.23),(L*.45,-H*.31),(L*.21,-H*.46),(-L*.35,-H*.43)]
     p2=catmull([(y,0,z) for y,z in raw+[raw[0],raw[1]]],4)[:-4]
     p2=p2[:-1] if (p2[0]-p2[-1]).length<.01 else p2
-    cx=shape(cy)[0]*1.05-.5
-    ringspec=[(.96,0), (1.08,2.3),(1.04,5.4),(.87,6.5),(.79,4.8),(.79,1.8)]
+    # Seat the back into the shell, but keep the entire opening in front of all
+    # overlapping armour, including the broad shoulder at the forward end.
+    cx=max(shape(cy-L*.58+i*L*1.16/32)[0] for i in range(33))*1.05+3.3
+    ringspec=[(.96,-8.0), (1.08,1.2),(1.04,5.4),(.87,6.5),(.79,4.8),(.79,1.8)]
     vs=[];n=len(p2)
     for scale,depth in ringspec:
         for p in p2:vs.append((sign*(cx+depth),cy+p.x*scale,cz+p.z*scale))
@@ -412,8 +418,8 @@
     for j in range(6):
         u=j/5;r=26.1-7*u;a=t+.085*u;pts.append((r*math.cos(a),-201+11*u,r*.89*math.sin(a)))
     tube(h,pts,[.90,1.05,.98,.81,.54,.23],2,9)
-    lit=[Vector(p)+Vector((-.16*math.cos(t),-.72,-.16*math.sin(t))) for p in pts]
-    tube(h,lit,[.29,.46,.44,.38,.24,.08],4,7)
+    lit=[Vector(p)+Vector((-.16*math.cos(t),-.98,-.16*math.sin(t))) for p in pts]
+    tube(h,lit,[.46,.65,.61,.47,.27,.08],4,8)
     # Dark rib continuing down the gullet from each luminous tooth.
     pts2=[]
     for j in range(6):
@@ -454,7 +460,7 @@
         theta=row*.43;base=surface(yy+row*3,theta,2.0);ht=(23 if row==0 else 18)*math.sin((i+1)/9*math.pi)**.5*(1+.10*math.sin(i*2.7))
         pts=catmull([base,base+Vector((row*2,3,ht*.4)),base+Vector((row*5,11,ht*.78)),base+Vector((row*7,21,ht))],5)
         rr=[3.6*(1-j/(len(pts)-1))**1.05+.035 for j in range(len(pts))]
-        tube(h,pts,rr,2,10,.66);ellipsoid(h,base,(5.3,7.8,2.8),0,18,8)
+        tube(h,pts,rr,2,12,ellipse=.66);ellipsoid(h,base,(5.3,7.8,2.8),0,18,8)
         ring(h,base+Vector((0,0,1.8)),(0,0,1),4.1,.6,2,24,7,1.25)
         tube(h,[base+Vector((row*2,0,1)),base+Vector((row*3,4,ht*.36)),base+Vector((row*5,11,ht*.7))],[.35,.28,.05],1,6)
 
@@ -462,7 +468,7 @@
 for s in [-1,1]:
     for zz in [-14,15]:
         pts=catmull([(s*28,132,zz),(s*31,163,zz*1.1),(s*26,189,zz*1.08),(s*21,211,zz*.9)],6)
-        rr=[6*(1-i/(len(pts)-1))**.8+.07 for i in range(len(pts))];tube(h,pts,rr,0,14,.58)
+        rr=[6*(1-i/(len(pts)-1))**.8+.07 for i in range(len(pts))];tube(h,pts,rr,0,14,ellipse=.58)
         tube(h,[p+Vector((0,0,2.2 if zz>0 else -2.2)) for p in pts[:-3]],[.30]*len(pts[:-3]),1,6)
 
 # Three main engines, bevelled ring exits, recessed glowing interiors.
@@ -507,6 +513,10 @@
         if side<0:dy=[v+5*math.sin(k*1.4+j) for k,v in enumerate(dy)]
         curl=[(6,dy[0],-12),(18-j,dy[1],-26),(30-j*4,dy[2],-39-j*2),(26-j*4,dy[3],-50-j*2),(16+j,dy[4],-54-j+(3 if side<0 else 0))]
         if j==2:curl=[(5,dy[0],-12),(13,dy[1],-23),(28,dy[2],-34),(28,dy[3],-48),(14,dy[4],-59)]
+        if side<0:
+            # A second, lower fan gives six distinct hanging silhouettes, with
+            # different tip heights rather than three mirrored hidden limbs.
+            curl=[(x*1.13,dy-12,dz*(1.24+.055*j)) for x,dy,dz in curl]
         points=[root]+[root+Vector((side*x,dy,dz)) for x,dy,dz in curl]
         pts=catmull(points,7);N=len(pts)
         rr=[6.5*(1-i/(N-1))+.95 for i in range(N)]
@@ -515,7 +525,7 @@
         for k in range(0,N-2,2):
             a,b=pts[k],pts[min(k+2,N-1)];mid=(a+b)/2;direction=(b-a).normalized();length=(b-a).length
             r=rr[k]+.4
-            tube(g,[a,a+direction*.5,b-direction*.55,b],[r*.91,r*1.08,r*1.02,r*.85],0,14,.88)
+            tube(g,[a,a+direction*.5,b-direction*.55,b],[r*.91,r*1.08,r*1.02,r*.85],0,14,ellipse=.88)
             ring(g,a+direction*.6,direction,r*1.02,.22,1,14,6,.88)
             # One narrow spinal rail down every link; no free-floating greebles.
             lateral=Vector((side,0,0));tube(g,[a+lateral*r*.89,mid+lateral*(r+ .15),b+lateral*r*.79],[.3,.34,.22],2,6)
@@ -585,7 +595,7 @@
 for ob in objs:
     select(ob);mod=ob.modifiers.new('Triangulated runtime surface','TRIANGULATE');bpy.ops.object.modifier_apply(modifier=mod.name)
     if ob==hull:
-        dec=ob.modifiers.new('Runtime surface reduction','DECIMATE');dec.ratio=min(.90,(182000-sum(len(a.data.polygons)*2 for a in objs[1:]))/len(ob.data.polygons));dec.use_collapse_triangulate=True;bpy.ops.object.modifier_apply(modifier=dec.name)
+        dec=ob.modifiers.new('Runtime surface reduction','DECIMATE');dec.ratio=min(.90,(178000-sum(len(a.data.polygons)*2 for a in objs[1:]))/len(ob.data.polygons));dec.use_collapse_triangulate=True;bpy.ops.object.modifier_apply(modifier=dec.name)
     if ob==hull:
         weighted=ob.modifiers.new('Area weighted armour shading','WEIGHTED_NORMAL');weighted.keep_sharp=True;weighted.mode='FACE_AREA_WITH_ANGLE';weighted.weight=35
         bpy.ops.object.modifier_apply(modifier=weighted.name)
@@ -601,7 +611,7 @@
     o=bpy.data.objects.new(name,None);sc.collection.objects.link(o);o.location=worldp(p);o.parent=parent;o.empty_display_size=2;return o
 for i,p in enumerate(THRUSTERS):empty('Thruster_'+str(i+1),p)
 empty('Camera_Chase',(0,315,110))
-empty('Light_Nav_L',(63,5,1))['color']=[1.0,0.0,0.0];empty('Light_Nav_R',(-63,5,1))['color']=[0.0,1.0,0.0];empty('Light_Beacon',(0,34,50))['color']=[1.0,.12,.0]
+empty('Light_Nav_L',(63,5,1))['color']=[1.0,0.0,0.0];empty('Light_Nav_R',(-63,5,1))['color']=[0.0,1.0,0.0];empty('Light_Beacon',surface(34,0,5))['color']=[1.0,.12,.0]
 asset=[o for o in sc.objects]
 bpy.context.view_layer.update()
 tri=sum(len(o.data.polygons) for o in objs)

hook: PreToolUse
hook: PreToolUse Completed
hook: PreToolUse
hook: PreToolUse
hook: PreToolUse
hook: PreToolUse
hook: PreToolUse Completed
hook: PreToolUse Completed
hook: PreToolUse Completed
hook: PreToolUse Completed
exec
/bin/bash -lc "sed -n '1,180p' /tmp/alien-harvester-review/review-v3.txt
sed -n '1,150p' /home/claude-agent/bin/geminix" in /home/claude-agent/forge-build/forge-assets/jobs/alien-harvester-v1
 succeeded in 0ms:
**Verdict: REVISE**

Compared [sheet.jpg](file:///home/claude-agent/forge-build/forge-assets/jobs/alien-harvester-v1/sheet.jpg) against current [final.png](file:///home/claude-agent/forge-build/forge-assets/jobs/alien-harvester-v1/final.png), [close.png](file:///home/claude-agent/forge-build/forge-assets/jobs/alien-harvester-v1/close.png), [side.png](file:///home/claude-agent/forge-build/forge-assets/jobs/alien-harvester-v1/side.png), [paints.png](file:///home/claude-agent/forge-build/forge-assets/jobs/alien-harvester-v1/paints.png), [arms-test.png](file:///home/claude-agent/forge-build/forge-assets/jobs/alien-harvester-v1/arms-test.png), baseline [v2/final.png](file:///tmp/alien-harvester-review/v2/final.png), [v2/close.png](file:///tmp/alien-harvester-review/v2/close.png), and [review.txt](file:///tmp/alien-harvester-review/review.txt).

### Status of Prior Findings ([review.txt](file:///tmp/alien-harvester-review/review.txt))

| Prior # | Area | Status | Visual Evidence (v2 vs Current) |
| :--- | :--- | :--- | :--- |
| **1** | **Silhouette & Hull Profile** | **Remaining** (belly ribs added, profile still flat) | [side.png](file:///home/claude-agent/forge-build/forge-assets/jobs/alien-harvester-v1/side.png) adds 6 forward belly segments, but the top and bottom hull lines remain horizontal and parallel from snout to tail with no mid-body dorsal arch or neck taper. |
| **2** | **Panel Construction & Greebles** | **Remaining / Regressed** | Smooth cheek pipes from [v2/close.png](file:///tmp/alien-harvester-review/v2/close.png) are gone, but the blocky tan latch pads on seams remain, the new snout cowl in [close.png](file:///home/claude-agent/forge-build/forge-assets/jobs/alien-harvester-v1/close.png) has wavy/pinched shading on its upper lip, and the new belly ribs curl out like thin peeling flaps over open black gaps. |
| **3** | **Glowing Maw & Side Vents** | **Partially Resolved** | Rear thruster heat chambers now glow and upper small vents sit flush ([final.png](file:///home/claude-agent/forge-build/forge-assets/jobs/alien-harvester-v1/final.png) vs [v2/final.png](file:///tmp/alien-harvester-review/v2/final.png)). Side vents still use tangled criss-cross cage bars, and the maw is still a bright peach radial ring around a dark hole. |
| **4** | **Material Realism & Dorsal Spines** | **Partially Resolved / Regressed** | Hull metal in [close.png](file:///home/claude-agent/forge-build/forge-assets/jobs/alien-harvester-v1/close.png) is darker with directional scoring (replacing v2 stucco), and paint variants in [paints.png](file:///home/claude-agent/forge-build/forge-assets/jobs/alien-harvester-v1/paints.png) hold up well. However, spine base rings were deleted so dorsal spines now clip straight through flat hull plates ([final.png](file:///home/claude-agent/forge-build/forge-assets/jobs/alien-harvester-v1/final.png)). |
| **5** | **Arm Sockets, Poses & Claws** | **Partially Resolved** | Arms now have varied poses per pair and larger 3-prong claws ([side.png](file:///home/claude-agent/forge-build/forge-assets/jobs/alien-harvester-v1/side.png), [arms-test.png](file:///home/claude-agent/forge-build/forge-assets/jobs/alien-harvester-v1/arms-test.png)), but still plug into plain squashed black balls and look thin and rigid (especially the straight rear pair). |

### Top 5 Prioritized Findings

| Priority | Area | Visual Evidence | Measurable Acceptance Criteria |
| :--- | :--- | :--- | :--- |
| **1** | **Cigar Silhouette vs Hunched Leviathan** | In [side.png](file:///home/claude-agent/forge-build/forge-assets/jobs/alien-harvester-v1/side.png), the hull roof and belly form a straight cylinder of uniform height from nose to tail. [sheet.jpg](file:///home/claude-agent/forge-build/forge-assets/jobs/alien-harvester-v1/sheet.jpg) has a swollen mid-body dorsal hump under the spines, a narrower neck behind the maw, and a tapered tail cone. | In [side.png](file:///home/claude-agent/forge-build/forge-assets/jobs/alien-harvester-v1/side.png), raise the mid-body dorsal arch so mid-hull thickness is 25% to 30% greater than the neck section behind the maw and the tail assembly. |
| **2** | **Peeling Belly Flaps, Pinched Nose Cowl & Leftover Seam Blocks** | In [close.png](file:///home/claude-agent/forge-build/forge-assets/jobs/alien-harvester-v1/close.png), the new snout cowl has lumpy, pinched normal/topology distortion near the top-left rim; the 6 ventral belly ribs are paper-thin sheets curling away from the hull over empty black gaps; and the square tan latch blocks with orange slots from v2 still sit across the panel seams. | Solidify ventral ribs and nose cowls to >=0.8m wall thickness so no backfaces or open gaps show in [close.png](file:///home/claude-agent/forge-build/forge-assets/jobs/alien-harvester-v1/close.png), fix the pinched shading on the upper snout lip, and delete all protruding square tan seam blocks. |
| **3** | **Tangled Side Vent Grates & Flat Maw Ring** | In [final.png](file:///home/claude-agent/forge-build/forge-assets/jobs/alien-harvester-v1/final.png) and [side.png](file:///home/claude-agent/forge-build/forge-assets/jobs/alien-harvester-v1/side.png), the two main side vents have thin, overlapping diagonal bars that look like a tangled wire cage. In [close.png](file:///home/claude-agent/forge-build/forge-assets/jobs/alien-harvester-v1/close.png), the maw is an unshaded peach-orange fin ring around a dark throat, missing the heavy side cheek pods and glowing inner core of [sheet.jpg](file:///home/claude-agent/forge-build/forge-assets/jobs/alien-harvester-v1/sheet.jpg). | Replace the crossed side vent bars with 4 to 5 parallel, thick angled armor louvers per vent. Darken the outer maw teeth to gunmetal/scorched metal, place the bright amber glow behind them inside the throat, and flare the side cheek cowls outward. |
| **4** | **Stiff Arm Segments & Plain Ball Sockets** | In [side.png](file:///home/claude-agent/forge-build/forge-assets/jobs/alien-harvester-v1/side.png) and [arms-test.png](file:///home/claude-agent/forge-build/forge-assets/jobs/alien-harvester-v1/arms-test.png), the rear arm pair is a nearly straight diagonal pipe with a small wrist hook, arm thickness is roughly half of [sheet.jpg](file:///home/claude-agent/forge-build/forge-assets/jobs/alien-harvester-v1/sheet.jpg), and all 6 arms attach via plain black spheres on a flat belly strip. | Add a real S-curve bend to the rear arm pair, increase upper-arm diameter by 35% to 50% tapering toward the wrist, and surround each ball joint with an armored collar ring recessed into the ventral hull. |
| **5** | **Clipping Dorsal Spines & Uniform Material Value** | Removing the v2 base rings left all dorsal spines in [final.png](file:///home/claude-agent/forge-build/forge-assets/jobs/alien-harvester-v1/final.png) and [side.png](file:///home/claude-agent/forge-build/forge-assets/jobs/alien-harvester-v1/side.png) intersecting directly into flat hull plates. Hull plates, rib straps, and snout share one uniform dark value with no heat-scorch darkening around vents or bare-metal edge contrast. | Seat each dorsal spine into a raised dorsal ridge or beveled collar socket (no raw mesh intersection), and add visible heat-scorched darkening/soot gradients around the maw, side vents, and rear heat chambers. |

***

0. **Blocked on you**: nothing.
1. **What you changed**: nothing (read-only visual review).
2. **How you know it works**: inspected [sheet.jpg](file:///home/claude-agent/forge-build/forge-assets/jobs/alien-harvester-v1/sheet.jpg), current [final.png](file:///home/claude-agent/forge-build/forge-assets/jobs/alien-harvester-v1/final.png), [close.png](file:///home/claude-agent/forge-build/forge-assets/jobs/alien-harvester-v1/close.png), [side.png](file:///home/claude-agent/forge-build/forge-assets/jobs/alien-harvester-v1/side.png), [paints.png](file:///home/claude-agent/forge-build/forge-assets/jobs/alien-harvester-v1/paints.png), [arms-test.png](file:///home/claude-agent/forge-build/forge-assets/jobs/alien-harvester-v1/arms-test.png), baseline [v2/final.png](file:///tmp/alien-harvester-review/v2/final.png), [v2/close.png](file:///tmp/alien-harvester-review/v2/close.png), and [review.txt](file:///tmp/alien-harvester-review/review.txt) directly with the image viewer.
3. **What would break if you were wrong**: shipping this revision leaves a flat cylinder silhouette, paper-thin peeling belly plates, pinched nose shading, and criss-cross vent bars visible in close and side views.
4. **What you did NOT do**: did not inspect the `.blend` or `.glb` files, triangle/material counts, or UV maps, and made no edits.
#!/bin/sh
# geminix: one-shot / scriptable Gemini, Antigravity CLI harness (default since 14 Oct 2026):
#   geminix "prompt"   |   geminix < file.md      (prints the final answer as text)
# Old Claude Code lane: geminix-cc, or FORGE_GEMINI_HARNESS=claude-code.
[ "${FORGE_GEMINI_HARNESS:-antigravity}" = claude-code ] && exec "$HOME/bin/geminix-cc" "$@"
if [ $# -eq 0 ] && [ -t 0 ]; then
  echo "geminix: no prompt given, starting the interactive session" >&2
  exec "$HOME/bin/gemini"
fi
exec "$HOME/bin/agy4" --model forge:build-gemini-4 -p "$@"

diff --git a/jobs/alien-harvester-v1/build_alien-harvester.py b/jobs/alien-harvester-v1/build_alien-harvester.py
index 2fd1298f86ec659e97961d76bdbc9f692a926df6..6e2b4e3d937bd42542695df9d07d2d1f4779682a
--- a/jobs/alien-harvester-v1/build_alien-harvester.py
+++ b/jobs/alien-harvester-v1/build_alien-harvester.py
@@ -161,7 +161,7 @@
 # Identical metal stock normal bakes share one image in the delivered GLB.
 MATS[3].node_tree.nodes['Normal'].image=MATS[1].node_tree.nodes['Normal'].image
 
-for name,col,strength in [('Lamps',(1,.15,.008,1),2.3),('Engines',(1,.22,.018,1),2.2)]:
+for name,col,strength in [('Lamps',(1,.18,.004,1),1.8),('Engines',(1,.24,.009,1),1.8)]:
     m=bpy.data.materials.new(name);m.use_nodes=True;p=m.node_tree.nodes.get('Principled BSDF');p.inputs['Base Color'].default_value=col;p.inputs['Roughness'].default_value=.34;p.inputs['Metallic'].default_value=.3;p.inputs['Emission Color'].default_value=col;p.inputs['Emission Strength'].default_value=strength;MATS.append(m)
 
 class Geo:
@@ -271,7 +271,11 @@
     for i in range(len(profile)-1):
         a,b=profile[i:i+2]
         if a[0]<=y<=b[0]:
-            t=(y-a[0])/(b[0]-a[0]);t=t*t*(3-2*t);return tuple(a[k]*(1-t)+b[k]*t for k in range(1,4))
+            # C1-continuous loft: no flattened shoulder or pinched ring at each
+            # control station, and the overlaid armour uses the identical skin.
+            prev=profile[max(0,i-1)];nxt=profile[min(len(profile)-1,i+2)]
+            span=b[0]-a[0];t=(y-a[0])/span
+            return tuple((2*t**3-3*t*t+1)*a[k]+(t**3-2*t*t+t)*span*(b[k]-prev[k])/(b[0]-prev[0])+(-2*t**3+3*t*t)*b[k]+(t**3-t*t)*span*(nxt[k]-a[k])/(nxt[0]-a[0]) for k in range(1,4))
     return profile[0][1:] if y<profile[0][0] else profile[-1][1:]
 def surface(y,t,offset=0):
     w,z,c=shape(y);return Vector(((w*1.05+offset)*math.sin(t),y,c+(z*1.30+offset)*math.cos(t)))
@@ -350,8 +354,10 @@
     if cy>0:raw=[(-L*.53,-H*.29),(-L*.36,H*.45),(L*.41,H*.42),(L*.52,H*.23),(L*.45,-H*.31),(L*.21,-H*.46),(-L*.35,-H*.43)]
     p2=catmull([(y,0,z) for y,z in raw+[raw[0],raw[1]]],4)[:-4]
     p2=p2[:-1] if (p2[0]-p2[-1]).length<.01 else p2
-    cx=shape(cy)[0]*1.05-.5
-    ringspec=[(.96,0), (1.08,2.3),(1.04,5.4),(.87,6.5),(.79,4.8),(.79,1.8)]
+    # Seat the back into the shell, but keep the entire opening in front of all
+    # overlapping armour, including the broad shoulder at the forward end.
+    cx=max(shape(cy-L*.58+i*L*1.16/32)[0] for i in range(33))*1.05+3.3
+    ringspec=[(.96,-8.0), (1.08,1.2),(1.04,5.4),(.87,6.5),(.79,4.8),(.79,1.8)]
     vs=[];n=len(p2)
     for scale,depth in ringspec:
         for p in p2:vs.append((sign*(cx+depth),cy+p.x*scale,cz+p.z*scale))
@@ -412,8 +418,8 @@
     for j in range(6):
         u=j/5;r=26.1-7*u;a=t+.085*u;pts.append((r*math.cos(a),-201+11*u,r*.89*math.sin(a)))
     tube(h,pts,[.90,1.05,.98,.81,.54,.23],2,9)
-    lit=[Vector(p)+Vector((-.16*math.cos(t),-.72,-.16*math.sin(t))) for p in pts]
-    tube(h,lit,[.29,.46,.44,.38,.24,.08],4,7)
+    lit=[Vector(p)+Vector((-.16*math.cos(t),-.98,-.16*math.sin(t))) for p in pts]
+    tube(h,lit,[.46,.65,.61,.47,.27,.08],4,8)
     # Dark rib continuing down the gullet from each luminous tooth.
     pts2=[]
     for j in range(6):
@@ -454,7 +460,7 @@
         theta=row*.43;base=surface(yy+row*3,theta,2.0);ht=(23 if row==0 else 18)*math.sin((i+1)/9*math.pi)**.5*(1+.10*math.sin(i*2.7))
         pts=catmull([base,base+Vector((row*2,3,ht*.4)),base+Vector((row*5,11,ht*.78)),base+Vector((row*7,21,ht))],5)
         rr=[3.6*(1-j/(len(pts)-1))**1.05+.035 for j in range(len(pts))]
-        tube(h,pts,rr,2,10,.66);ellipsoid(h,base,(5.3,7.8,2.8),0,18,8)
+        tube(h,pts,rr,2,12,ellipse=.66);ellipsoid(h,base,(5.3,7.8,2.8),0,18,8)
         ring(h,base+Vector((0,0,1.8)),(0,0,1),4.1,.6,2,24,7,1.25)
         tube(h,[base+Vector((row*2,0,1)),base+Vector((row*3,4,ht*.36)),base+Vector((row*5,11,ht*.7))],[.35,.28,.05],1,6)
 
@@ -462,7 +468,7 @@
 for s in [-1,1]:
     for zz in [-14,15]:
         pts=catmull([(s*28,132,zz),(s*31,163,zz*1.1),(s*26,189,zz*1.08),(s*21,211,zz*.9)],6)
-        rr=[6*(1-i/(len(pts)-1))**.8+.07 for i in range(len(pts))];tube(h,pts,rr,0,14,.58)
+        rr=[6*(1-i/(len(pts)-1))**.8+.07 for i in range(len(pts))];tube(h,pts,rr,0,14,ellipse=.58)
         tube(h,[p+Vector((0,0,2.2 if zz>0 else -2.2)) for p in pts[:-3]],[.30]*len(pts[:-3]),1,6)
 
 # Three main engines, bevelled ring exits, recessed glowing interiors.
@@ -507,6 +513,10 @@
         if side<0:dy=[v+5*math.sin(k*1.4+j) for k,v in enumerate(dy)]
         curl=[(6,dy[0],-12),(18-j,dy[1],-26),(30-j*4,dy[2],-39-j*2),(26-j*4,dy[3],-50-j*2),(16+j,dy[4],-54-j+(3 if side<0 else 0))]
         if j==2:curl=[(5,dy[0],-12),(13,dy[1],-23),(28,dy[2],-34),(28,dy[3],-48),(14,dy[4],-59)]
+        if side<0:
+            # A second, lower fan gives six distinct hanging silhouettes, with
+            # different tip heights rather than three mirrored hidden limbs.
+            curl=[(x*1.13,dy-12,dz*(1.24+.055*j)) for x,dy,dz in curl]
         points=[root]+[root+Vector((side*x,dy,dz)) for x,dy,dz in curl]
         pts=catmull(points,7);N=len(pts)
         rr=[6.5*(1-i/(N-1))+.95 for i in range(N)]
@@ -515,7 +525,7 @@
         for k in range(0,N-2,2):
             a,b=pts[k],pts[min(k+2,N-1)];mid=(a+b)/2;direction=(b-a).normalized();length=(b-a).length
             r=rr[k]+.4
-            tube(g,[a,a+direction*.5,b-direction*.55,b],[r*.91,r*1.08,r*1.02,r*.85],0,14,.88)
+            tube(g,[a,a+direction*.5,b-direction*.55,b],[r*.91,r*1.08,r*1.02,r*.85],0,14,ellipse=.88)
             ring(g,a+direction*.6,direction,r*1.02,.22,1,14,6,.88)
             # One narrow spinal rail down every link; no free-floating greebles.
             lateral=Vector((side,0,0));tube(g,[a+lateral*r*.89,mid+lateral*(r+ .15),b+lateral*r*.79],[.3,.34,.22],2,6)
@@ -585,7 +595,7 @@
 for ob in objs:
     select(ob);mod=ob.modifiers.new('Triangulated runtime surface','TRIANGULATE');bpy.ops.object.modifier_apply(modifier=mod.name)
     if ob==hull:
-        dec=ob.modifiers.new('Runtime surface reduction','DECIMATE');dec.ratio=min(.90,(182000-sum(len(a.data.polygons)*2 for a in objs[1:]))/len(ob.data.polygons));dec.use_collapse_triangulate=True;bpy.ops.object.modifier_apply(modifier=dec.name)
+        dec=ob.modifiers.new('Runtime surface reduction','DECIMATE');dec.ratio=min(.90,(178000-sum(len(a.data.polygons)*2 for a in objs[1:]))/len(ob.data.polygons));dec.use_collapse_triangulate=True;bpy.ops.object.modifier_apply(modifier=dec.name)
     if ob==hull:
         weighted=ob.modifiers.new('Area weighted armour shading','WEIGHTED_NORMAL');weighted.keep_sharp=True;weighted.mode='FACE_AREA_WITH_ANGLE';weighted.weight=35
         bpy.ops.object.modifier_apply(modifier=weighted.name)
@@ -601,7 +611,7 @@
     o=bpy.data.objects.new(name,None);sc.collection.objects.link(o);o.location=worldp(p);o.parent=parent;o.empty_display_size=2;return o
 for i,p in enumerate(THRUSTERS):empty('Thruster_'+str(i+1),p)
 empty('Camera_Chase',(0,315,110))
-empty('Light_Nav_L',(63,5,1))['color']=[1.0,0.0,0.0];empty('Light_Nav_R',(-63,5,1))['color']=[0.0,1.0,0.0];empty('Light_Beacon',(0,34,50))['color']=[1.0,.12,.0]
+empty('Light_Nav_L',(63,5,1))['color']=[1.0,0.0,0.0];empty('Light_Nav_R',(-63,5,1))['color']=[0.0,1.0,0.0];empty('Light_Beacon',surface(34,0,5))['color']=[1.0,.12,.0]
 asset=[o for o in sc.objects]
 bpy.context.view_layer.update()
 tri=sum(len(o.data.polygons) for o in objs)

hook: PreToolUse
hook: PreToolUse
hook: PreToolUse
hook: PreToolUse
hook: PreToolUse Completed
hook: PreToolUse Completed
hook: PreToolUse Completed
hook: PreToolUse Completed
exec
/bin/bash -lc 'ssh gex44 tail -n 8 /root/fal-author/alien-harvester-v1/build.log' in /home/claude-agent/forge-build/forge-assets/jobs/alien-harvester-v1
 succeeded in 430ms:
HARVESTER 15.0 Repaired 5 collapsed UV tangent frames
HARVESTER 15.0 Repaired 1 collapsed UV tangent frames
HARVESTER 15.0 GLB bytes 11834032
/root/fal-author/alien-harvester-v1/build_alien-harvester.py:717: DeprecationWarning: 'Material.use_nodes' is expected to be removed in Blender 6.0
  camera();clay=bpy.data.materials.new('QA clay');clay.diffuse_color=(.36,.36,.36,1);clay.use_nodes=True;clay.node_tree.nodes['Principled BSDF'].inputs['Roughness'].default_value=.72;clay.node_tree.nodes['Principled BSDF'].inputs['Base Color'].default_value=(.36,.36,.36,1)
HARVESTER 15.4 Render clay.png
00:24.707  render           | Saved: '/root/fal-author/alien-harvester-v1/clay.png'
HARVESTER 24.3 Render final.png

hook: PreToolUse
hook: PreToolUse
hook: PreToolUse
hook: PreToolUse
hook: PreToolUse Completed
hook: PreToolUse Completed
hook: PreToolUse Completed
hook: PreToolUse Completed
exec
/bin/bash -lc "sed -n '1,160p' /tmp/alien-harvester-check/check.cjs
sed -n '1,100p' /tmp/alien-harvester-check/index.html" in /home/claude-agent/forge-build/forge-assets/jobs/alien-harvester-v1
 succeeded in 0ms:
const {chromium}=require('playwright');const fs=require('fs');
(async()=>{const browser=await chromium.launch({headless:true,executablePath:'/home/claude-agent/.cache/ms-playwright/chromium-1223/chrome-linux/chrome',args:['--no-sandbox','--use-angle=swiftshader','--enable-unsafe-swiftshader']});const page=await browser.newPage({viewport:{width:1600,height:900}});let errors=[];page.on('pageerror',e=>errors.push(String(e)));await page.goto('http://127.0.0.1:8847/');await page.waitForFunction(()=>window.ready||window.failure,{timeout:120000});const report=await page.evaluate(()=>window.report||window.failure);fs.writeFileSync('/tmp/alien-harvester-check/report.json',JSON.stringify({report,errors},null,2));await page.screenshot({path:'/tmp/alien-harvester-check/runtime.png'});await page.evaluate(()=>window.articulate());await page.screenshot({path:'/tmp/alien-harvester-check/runtime-arms.png'});await page.evaluate(()=>window.resetPose());await page.evaluate(()=>window.mapsOff('normal'));await page.screenshot({path:'/tmp/alien-harvester-check/runtime-no-normal.png'});await page.evaluate(()=>window.mapsOff('ao'));await page.screenshot({path:'/tmp/alien-harvester-check/runtime-no-ao.png'});await browser.close();console.log(JSON.stringify({report,errors},null,2));})();
<!doctype html><meta charset="utf-8"><style>body{margin:0;background:#03070c}canvas{display:block}</style>
<script type="importmap">{"imports":{"three":"./node_modules/three/build/three.module.js","three/addons/":"./node_modules/three/examples/jsm/"}}</script>
<script type="module">
import * as T from 'three';
import {GLTFLoader} from 'three/addons/loaders/GLTFLoader.js';
import {DRACOLoader} from 'three/addons/loaders/DRACOLoader.js';
const r=new T.WebGLRenderer({antialias:true,preserveDrawingBuffer:true});r.setSize(1600,900);r.setPixelRatio(1);r.outputColorSpace=T.SRGBColorSpace;r.toneMapping=T.AgXToneMapping;r.toneMappingExposure=1;document.body.append(r.domElement);
const s=new T.Scene();s.background=new T.Color('#050a12');
const camera=new T.OrthographicCamera(-235,235,235*900/1600,-235*900/1600,1,2000);camera.position.set(620,180,460);camera.lookAt(0,-3,6);
s.add(new T.HemisphereLight(0x99bbff,0x606b86,.55));
for(const [p,c,pow] of [[[180,280,240],0xfff2e4,2.2],[[-190,70,50],0x82adff,.9],[[100,200,-220],0xadcaff,2.8]]){const l=new T.DirectionalLight(c,pow);l.position.set(...p);s.add(l)}
const draco=new DRACOLoader();draco.setDecoderPath('./node_modules/three/examples/jsm/libs/draco/gltf/');
const loader=new GLTFLoader();loader.setDRACOLoader(draco);
try{
const gltf=await loader.loadAsync('./alien-harvester.glb');const model=gltf.scene;s.add(model);s.updateMatrixWorld(true);
const bounds=new T.Box3().setFromObject(model);let tris=0,meshes=0;let textures=new Map(),mats=new Map(),nodes={};
model.traverse(o=>{nodes[o.name]=o.getWorldPosition(new T.Vector3()).toArray();if(o.isMesh){meshes++;tris+=(o.geometry.index?.count||o.geometry.attributes.position.count)/3;for(const m of Array.isArray(o.material)?o.material:[o.material]){mats.set(m.name,m);for(const k of ['map','normalMap','roughnessMap','metalnessMap','aoMap']){const t=m[k];if(t)textures.set(t.uuid,[t.image.width,t.image.height,k])}}}});
r.render(s,camera);window.report={bounds:[bounds.min.toArray(),bounds.max.toArray()],size:bounds.getSize(new T.Vector3()).toArray(),triangles:tris,meshes,drawCalls:r.info.render.calls,materials:[...mats.keys()],textures:[...textures.values()],nodes,paint:mats.get('Paint')?.color.toArray(),backend:r.getContext().getParameter(r.getContext().RENDERER)};
window.articulate=()=>{model.traverse(o=>{if(/^Arm_\d+$/.test(o.name))o.rotation.z=Math.PI/6});r.render(s,camera)};
const originals=new Map([...mats.values()].map(m=>[m,[m.normalMap,m.aoMap]]));
window.resetPose=()=>{model.traverse(o=>{if(/^Arm_\d+$/.test(o.name))o.rotation.z=0});r.render(s,camera)};
window.mapsOff=(kind)=>{for(const m of mats.values()){m.normalMap=kind==='normal'?null:originals.get(m)[0];m.aoMap=kind==='ao'?null:originals.get(m)[1];m.needsUpdate=true;}r.render(s,camera)};
window.ready=true;
}catch(e){window.failure=String(e);console.error(e)}
</script>

diff --git a/jobs/alien-harvester-v1/build_alien-harvester.py b/jobs/alien-harvester-v1/build_alien-harvester.py
index 2fd1298f86ec659e97961d76bdbc9f692a926df6..6e2b4e3d937bd42542695df9d07d2d1f4779682a
--- a/jobs/alien-harvester-v1/build_alien-harvester.py
+++ b/jobs/alien-harvester-v1/build_alien-harvester.py
@@ -161,7 +161,7 @@
 # Identical metal stock normal bakes share one image in the delivered GLB.
 MATS[3].node_tree.nodes['Normal'].image=MATS[1].node_tree.nodes['Normal'].image
 
-for name,col,strength in [('Lamps',(1,.15,.008,1),2.3),('Engines',(1,.22,.018,1),2.2)]:
+for name,col,strength in [('Lamps',(1,.18,.004,1),1.8),('Engines',(1,.24,.009,1),1.8)]:
     m=bpy.data.materials.new(name);m.use_nodes=True;p=m.node_tree.nodes.get('Principled BSDF');p.inputs['Base Color'].default_value=col;p.inputs['Roughness'].default_value=.34;p.inputs['Metallic'].default_value=.3;p.inputs['Emission Color'].default_value=col;p.inputs['Emission Strength'].default_value=strength;MATS.append(m)
 
 class Geo:
@@ -271,7 +271,11 @@
     for i in range(len(profile)-1):
         a,b=profile[i:i+2]
         if a[0]<=y<=b[0]:
-            t=(y-a[0])/(b[0]-a[0]);t=t*t*(3-2*t);return tuple(a[k]*(1-t)+b[k]*t for k in range(1,4))
+            # C1-continuous loft: no flattened shoulder or pinched ring at each
+            # control station, and the overlaid armour uses the identical skin.
+            prev=profile[max(0,i-1)];nxt=profile[min(len(profile)-1,i+2)]
+            span=b[0]-a[0];t=(y-a[0])/span
+            return tuple((2*t**3-3*t*t+1)*a[k]+(t**3-2*t*t+t)*span*(b[k]-prev[k])/(b[0]-prev[0])+(-2*t**3+3*t*t)*b[k]+(t**3-t*t)*span*(nxt[k]-a[k])/(nxt[0]-a[0]) for k in range(1,4))
     return profile[0][1:] if y<profile[0][0] else profile[-1][1:]
 def surface(y,t,offset=0):
     w,z,c=shape(y);return Vector(((w*1.05+offset)*math.sin(t),y,c+(z*1.30+offset)*math.cos(t)))
@@ -350,8 +354,10 @@
     if cy>0:raw=[(-L*.53,-H*.29),(-L*.36,H*.45),(L*.41,H*.42),(L*.52,H*.23),(L*.45,-H*.31),(L*.21,-H*.46),(-L*.35,-H*.43)]
     p2=catmull([(y,0,z) for y,z in raw+[raw[0],raw[1]]],4)[:-4]
     p2=p2[:-1] if (p2[0]-p2[-1]).length<.01 else p2
-    cx=shape(cy)[0]*1.05-.5
-    ringspec=[(.96,0), (1.08,2.3),(1.04,5.4),(.87,6.5),(.79,4.8),(.79,1.8)]
+    # Seat the back into the shell, but keep the entire opening in front of all
+    # overlapping armour, including the broad shoulder at the forward end.
+    cx=max(shape(cy-L*.58+i*L*1.16/32)[0] for i in range(33))*1.05+3.3
+    ringspec=[(.96,-8.0), (1.08,1.2),(1.04,5.4),(.87,6.5),(.79,4.8),(.79,1.8)]
     vs=[];n=len(p2)
     for scale,depth in ringspec:
         for p in p2:vs.append((sign*(cx+depth),cy+p.x*scale,cz+p.z*scale))
@@ -412,8 +418,8 @@
     for j in range(6):
         u=j/5;r=26.1-7*u;a=t+.085*u;pts.append((r*math.cos(a),-201+11*u,r*.89*math.sin(a)))
     tube(h,pts,[.90,1.05,.98,.81,.54,.23],2,9)
-    lit=[Vector(p)+Vector((-.16*math.cos(t),-.72,-.16*math.sin(t))) for p in pts]
-    tube(h,lit,[.29,.46,.44,.38,.24,.08],4,7)
+    lit=[Vector(p)+Vector((-.16*math.cos(t),-.98,-.16*math.sin(t))) for p in pts]
+    tube(h,lit,[.46,.65,.61,.47,.27,.08],4,8)
     # Dark rib continuing down the gullet from each luminous tooth.
     pts2=[]
     for j in range(6):
@@ -454,7 +460,7 @@
         theta=row*.43;base=surface(yy+row*3,theta,2.0);ht=(23 if row==0 else 18)*math.sin((i+1)/9*math.pi)**.5*(1+.10*math.sin(i*2.7))
         pts=catmull([base,base+Vector((row*2,3,ht*.4)),base+Vector((row*5,11,ht*.78)),base+Vector((row*7,21,ht))],5)
         rr=[3.6*(1-j/(len(pts)-1))**1.05+.035 for j in range(len(pts))]
-        tube(h,pts,rr,2,10,.66);ellipsoid(h,base,(5.3,7.8,2.8),0,18,8)
+        tube(h,pts,rr,2,12,ellipse=.66);ellipsoid(h,base,(5.3,7.8,2.8),0,18,8)
         ring(h,base+Vector((0,0,1.8)),(0,0,1),4.1,.6,2,24,7,1.25)
         tube(h,[base+Vector((row*2,0,1)),base+Vector((row*3,4,ht*.36)),base+Vector((row*5,11,ht*.7))],[.35,.28,.05],1,6)
 
@@ -462,7 +468,7 @@
 for s in [-1,1]:
     for zz in [-14,15]:
         pts=catmull([(s*28,132,zz),(s*31,163,zz*1.1),(s*26,189,zz*1.08),(s*21,211,zz*.9)],6)
-        rr=[6*(1-i/(len(pts)-1))**.8+.07 for i in range(len(pts))];tube(h,pts,rr,0,14,.58)
+        rr=[6*(1-i/(len(pts)-1))**.8+.07 for i in range(len(pts))];tube(h,pts,rr,0,14,ellipse=.58)
         tube(h,[p+Vector((0,0,2.2 if zz>0 else -2.2)) for p in pts[:-3]],[.30]*len(pts[:-3]),1,6)
 
 # Three main engines, bevelled ring exits, recessed glowing interiors.
@@ -507,6 +513,10 @@
         if side<0:dy=[v+5*math.sin(k*1.4+j) for k,v in enumerate(dy)]
         curl=[(6,dy[0],-12),(18-j,dy[1],-26),(30-j*4,dy[2],-39-j*2),(26-j*4,dy[3],-50-j*2),(16+j,dy[4],-54-j+(3 if side<0 else 0))]
         if j==2:curl=[(5,dy[0],-12),(13,dy[1],-23),(28,dy[2],-34),(28,dy[3],-48),(14,dy[4],-59)]
+        if side<0:
+            # A second, lower fan gives six distinct hanging silhouettes, with
+            # different tip heights rather than three mirrored hidden limbs.
+            curl=[(x*1.13,dy-12,dz*(1.24+.055*j)) for x,dy,dz in curl]
         points=[root]+[root+Vector((side*x,dy,dz)) for x,dy,dz in curl]
         pts=catmull(points,7);N=len(pts)
         rr=[6.5*(1-i/(N-1))+.95 for i in range(N)]
@@ -515,7 +525,7 @@
         for k in range(0,N-2,2):
             a,b=pts[k],pts[min(k+2,N-1)];mid=(a+b)/2;direction=(b-a).normalized();length=(b-a).length
             r=rr[k]+.4
-            tube(g,[a,a+direction*.5,b-direction*.55,b],[r*.91,r*1.08,r*1.02,r*.85],0,14,.88)
+            tube(g,[a,a+direction*.5,b-direction*.55,b],[r*.91,r*1.08,r*1.02,r*.85],0,14,ellipse=.88)
             ring(g,a+direction*.6,direction,r*1.02,.22,1,14,6,.88)
             # One narrow spinal rail down every link; no free-floating greebles.
             lateral=Vector((side,0,0));tube(g,[a+lateral*r*.89,mid+lateral*(r+ .15),b+lateral*r*.79],[.3,.34,.22],2,6)
@@ -585,7 +595,7 @@
 for ob in objs:
     select(ob);mod=ob.modifiers.new('Triangulated runtime surface','TRIANGULATE');bpy.ops.object.modifier_apply(modifier=mod.name)
     if ob==hull:
-        dec=ob.modifiers.new('Runtime surface reduction','DECIMATE');dec.ratio=min(.90,(182000-sum(len(a.data.polygons)*2 for a in objs[1:]))/len(ob.data.polygons));dec.use_collapse_triangulate=True;bpy.ops.object.modifier_apply(modifier=dec.name)
+        dec=ob.modifiers.new('Runtime surface reduction','DECIMATE');dec.ratio=min(.90,(178000-sum(len(a.data.polygons)*2 for a in objs[1:]))/len(ob.data.polygons));dec.use_collapse_triangulate=True;bpy.ops.object.modifier_apply(modifier=dec.name)
     if ob==hull:
         weighted=ob.modifiers.new('Area weighted armour shading','WEIGHTED_NORMAL');weighted.keep_sharp=True;weighted.mode='FACE_AREA_WITH_ANGLE';weighted.weight=35
         bpy.ops.object.modifier_apply(modifier=weighted.name)
@@ -601,7 +611,7 @@
     o=bpy.data.objects.new(name,None);sc.collection.objects.link(o);o.location=worldp(p);o.parent=parent;o.empty_display_size=2;return o
 for i,p in enumerate(THRUSTERS):empty('Thruster_'+str(i+1),p)
 empty('Camera_Chase',(0,315,110))
-empty('Light_Nav_L',(63,5,1))['color']=[1.0,0.0,0.0];empty('Light_Nav_R',(-63,5,1))['color']=[0.0,1.0,0.0];empty('Light_Beacon',(0,34,50))['color']=[1.0,.12,.0]
+empty('Light_Nav_L',(63,5,1))['color']=[1.0,0.0,0.0];empty('Light_Nav_R',(-63,5,1))['color']=[0.0,1.0,0.0];empty('Light_Beacon',surface(34,0,5))['color']=[1.0,.12,.0]
 asset=[o for o in sc.objects]
 bpy.context.view_layer.update()
 tri=sum(len(o.data.polygons) for o in objs)

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/bin/bash -lc "cat > /tmp/alien-harvester-review/request-final.md <<'EOF'
Read-only independent visual review of an original realistic game asset. Open the actual images with your image tool before judging. No edits, no subprocess delegation, no new requirements. Return PASS/REVISE/BLOCKED and at most 3 material findings, with evidence coordinates and measurable acceptance. Compare reference and current (not only progress). Mention resolved prior problems and anything still weaker than the sheet. No need to repeat boilerplate task status.

Reference: /home/claude-agent/forge-build/forge-assets/jobs/alien-harvester-v1/sheet.jpg
CURRENT actual Blender Cycles renders (open all):
/home/claude-agent/forge-build/forge-assets/jobs/alien-harvester-v1/final.png
/home/claude-agent/forge-build/forge-assets/jobs/alien-harvester-v1/side.png
/home/claude-agent/forge-build/forge-assets/jobs/alien-harvester-v1/close.png
/home/claude-agent/forge-build/forge-assets/jobs/alien-harvester-v1/clay.png
/home/claude-agent/forge-build/forge-assets/jobs/alien-harvester-v1/arms-test.png
/home/claude-agent/forge-build/forge-assets/jobs/alien-harvester-v1/paints.png
Prior baseline: /tmp/alien-harvester-review/v4/final.png and /tmp/alien-harvester-review/v4/side.png and /tmp/alien-harvester-review/v4/close.png. Same cameras and lights. Prior findings: /tmp/alien-harvester-review/review-v3.txt (that report reviewed a version before the v4 baseline).

Task: dark elongated segmented alien harvester, amber maw/vents, dorsal spines, exactly SIX articulated root-pivot harvesting arms (reference depicts more), 420x160x120m, no windows, text, markings, grounded metal construction and realistic wear. <=200k triangles, 6 materials, 1k tiled bakes, 512 ORM, <=12MB GLB. All materials photo-derived CC0 with Cycles bakes. Actual source geometry has 3m+ closed shell plates, welded bevelled details. Do not infer missing thickness merely from a dark seam. Current version fixes a real rear-vent intersection, smooths loft derivatives, and fans far arms lower to show all six. Assess if those changes worked. Spines do have raised collars; assess appearance rather than guessing code. This is a single production game asset with deliberately clean broad plates, not a pixel-copy of the painted sheet. Judge material problems that would actually harm game use or required likeness.
EOF" in /home/claude-agent/forge-build/forge-assets/jobs/alien-harvester-v1
 succeeded in 0ms:
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/bin/bash -lc 'ssh gex44 tail -n 4 /root/fal-author/alien-harvester-v1/build.log' in /home/claude-agent/forge-build/forge-assets/jobs/alien-harvester-v1
 succeeded in 500ms:
00:50.063  render           | Saved: '/root/fal-author/alien-harvester-v1/side.png'
HARVESTER 49.6 Render rear.png
00:55.982  render           | Saved: '/root/fal-author/alien-harvester-v1/rear.png'
HARVESTER 55.5 Render close.png

diff --git a/jobs/alien-harvester-v1/build_alien-harvester.py b/jobs/alien-harvester-v1/build_alien-harvester.py
index 2fd1298f86ec659e97961d76bdbc9f692a926df6..6e2b4e3d937bd42542695df9d07d2d1f4779682a
--- a/jobs/alien-harvester-v1/build_alien-harvester.py
+++ b/jobs/alien-harvester-v1/build_alien-harvester.py
@@ -161,7 +161,7 @@
 # Identical metal stock normal bakes share one image in the delivered GLB.
 MATS[3].node_tree.nodes['Normal'].image=MATS[1].node_tree.nodes['Normal'].image
 
-for name,col,strength in [('Lamps',(1,.15,.008,1),2.3),('Engines',(1,.22,.018,1),2.2)]:
+for name,col,strength in [('Lamps',(1,.18,.004,1),1.8),('Engines',(1,.24,.009,1),1.8)]:
     m=bpy.data.materials.new(name);m.use_nodes=True;p=m.node_tree.nodes.get('Principled BSDF');p.inputs['Base Color'].default_value=col;p.inputs['Roughness'].default_value=.34;p.inputs['Metallic'].default_value=.3;p.inputs['Emission Color'].default_value=col;p.inputs['Emission Strength'].default_value=strength;MATS.append(m)
 
 class Geo:
@@ -271,7 +271,11 @@
     for i in range(len(profile)-1):
         a,b=profile[i:i+2]
         if a[0]<=y<=b[0]:
-            t=(y-a[0])/(b[0]-a[0]);t=t*t*(3-2*t);return tuple(a[k]*(1-t)+b[k]*t for k in range(1,4))
+            # C1-continuous loft: no flattened shoulder or pinched ring at each
+            # control station, and the overlaid armour uses the identical skin.
+            prev=profile[max(0,i-1)];nxt=profile[min(len(profile)-1,i+2)]
+            span=b[0]-a[0];t=(y-a[0])/span
+            return tuple((2*t**3-3*t*t+1)*a[k]+(t**3-2*t*t+t)*span*(b[k]-prev[k])/(b[0]-prev[0])+(-2*t**3+3*t*t)*b[k]+(t**3-t*t)*span*(nxt[k]-a[k])/(nxt[0]-a[0]) for k in range(1,4))
     return profile[0][1:] if y<profile[0][0] else profile[-1][1:]
 def surface(y,t,offset=0):
     w,z,c=shape(y);return Vector(((w*1.05+offset)*math.sin(t),y,c+(z*1.30+offset)*math.cos(t)))
@@ -350,8 +354,10 @@
     if cy>0:raw=[(-L*.53,-H*.29),(-L*.36,H*.45),(L*.41,H*.42),(L*.52,H*.23),(L*.45,-H*.31),(L*.21,-H*.46),(-L*.35,-H*.43)]
     p2=catmull([(y,0,z) for y,z in raw+[raw[0],raw[1]]],4)[:-4]
     p2=p2[:-1] if (p2[0]-p2[-1]).length<.01 else p2
-    cx=shape(cy)[0]*1.05-.5
-    ringspec=[(.96,0), (1.08,2.3),(1.04,5.4),(.87,6.5),(.79,4.8),(.79,1.8)]
+    # Seat the back into the shell, but keep the entire opening in front of all
+    # overlapping armour, including the broad shoulder at the forward end.
+    cx=max(shape(cy-L*.58+i*L*1.16/32)[0] for i in range(33))*1.05+3.3
+    ringspec=[(.96,-8.0), (1.08,1.2),(1.04,5.4),(.87,6.5),(.79,4.8),(.79,1.8)]
     vs=[];n=len(p2)
     for scale,depth in ringspec:
         for p in p2:vs.append((sign*(cx+depth),cy+p.x*scale,cz+p.z*scale))
@@ -412,8 +418,8 @@
     for j in range(6):
         u=j/5;r=26.1-7*u;a=t+.085*u;pts.append((r*math.cos(a),-201+11*u,r*.89*math.sin(a)))
     tube(h,pts,[.90,1.05,.98,.81,.54,.23],2,9)
-    lit=[Vector(p)+Vector((-.16*math.cos(t),-.72,-.16*math.sin(t))) for p in pts]
-    tube(h,lit,[.29,.46,.44,.38,.24,.08],4,7)
+    lit=[Vector(p)+Vector((-.16*math.cos(t),-.98,-.16*math.sin(t))) for p in pts]
+    tube(h,lit,[.46,.65,.61,.47,.27,.08],4,8)
     # Dark rib continuing down the gullet from each luminous tooth.
     pts2=[]
     for j in range(6):
@@ -454,7 +460,7 @@
         theta=row*.43;base=surface(yy+row*3,theta,2.0);ht=(23 if row==0 else 18)*math.sin((i+1)/9*math.pi)**.5*(1+.10*math.sin(i*2.7))
         pts=catmull([base,base+Vector((row*2,3,ht*.4)),base+Vector((row*5,11,ht*.78)),base+Vector((row*7,21,ht))],5)
         rr=[3.6*(1-j/(len(pts)-1))**1.05+.035 for j in range(len(pts))]
-        tube(h,pts,rr,2,10,.66);ellipsoid(h,base,(5.3,7.8,2.8),0,18,8)
+        tube(h,pts,rr,2,12,ellipse=.66);ellipsoid(h,base,(5.3,7.8,2.8),0,18,8)
         ring(h,base+Vector((0,0,1.8)),(0,0,1),4.1,.6,2,24,7,1.25)
         tube(h,[base+Vector((row*2,0,1)),base+Vector((row*3,4,ht*.36)),base+Vector((row*5,11,ht*.7))],[.35,.28,.05],1,6)
 
@@ -462,7 +468,7 @@
 for s in [-1,1]:
     for zz in [-14,15]:
         pts=catmull([(s*28,132,zz),(s*31,163,zz*1.1),(s*26,189,zz*1.08),(s*21,211,zz*.9)],6)
-        rr=[6*(1-i/(len(pts)-1))**.8+.07 for i in range(len(pts))];tube(h,pts,rr,0,14,.58)
+        rr=[6*(1-i/(len(pts)-1))**.8+.07 for i in range(len(pts))];tube(h,pts,rr,0,14,ellipse=.58)
         tube(h,[p+Vector((0,0,2.2 if zz>0 else -2.2)) for p in pts[:-3]],[.30]*len(pts[:-3]),1,6)
 
 # Three main engines, bevelled ring exits, recessed glowing interiors.
@@ -507,6 +513,10 @@
         if side<0:dy=[v+5*math.sin(k*1.4+j) for k,v in enumerate(dy)]
         curl=[(6,dy[0],-12),(18-j,dy[1],-26),(30-j*4,dy[2],-39-j*2),(26-j*4,dy[3],-50-j*2),(16+j,dy[4],-54-j+(3 if side<0 else 0))]
         if j==2:curl=[(5,dy[0],-12),(13,dy[1],-23),(28,dy[2],-34),(28,dy[3],-48),(14,dy[4],-59)]
+        if side<0:
+            # A second, lower fan gives six distinct hanging silhouettes, with
+            # different tip heights rather than three mirrored hidden limbs.
+            curl=[(x*1.13,dy-12,dz*(1.24+.055*j)) for x,dy,dz in curl]
         points=[root]+[root+Vector((side*x,dy,dz)) for x,dy,dz in curl]
         pts=catmull(points,7);N=len(pts)
         rr=[6.5*(1-i/(N-1))+.95 for i in range(N)]
@@ -515,7 +525,7 @@
         for k in range(0,N-2,2):
             a,b=pts[k],pts[min(k+2,N-1)];mid=(a+b)/2;direction=(b-a).normalized();length=(b-a).length
             r=rr[k]+.4
-            tube(g,[a,a+direction*.5,b-direction*.55,b],[r*.91,r*1.08,r*1.02,r*.85],0,14,.88)
+            tube(g,[a,a+direction*.5,b-direction*.55,b],[r*.91,r*1.08,r*1.02,r*.85],0,14,ellipse=.88)
             ring(g,a+direction*.6,direction,r*1.02,.22,1,14,6,.88)
             # One narrow spinal rail down every link; no free-floating greebles.
             lateral=Vector((side,0,0));tube(g,[a+lateral*r*.89,mid+lateral*(r+ .15),b+lateral*r*.79],[.3,.34,.22],2,6)
@@ -585,7 +595,7 @@
 for ob in objs:
     select(ob);mod=ob.modifiers.new('Triangulated runtime surface','TRIANGULATE');bpy.ops.object.modifier_apply(modifier=mod.name)
     if ob==hull:
-        dec=ob.modifiers.new('Runtime surface reduction','DECIMATE');dec.ratio=min(.90,(182000-sum(len(a.data.polygons)*2 for a in objs[1:]))/len(ob.data.polygons));dec.use_collapse_triangulate=True;bpy.ops.object.modifier_apply(modifier=dec.name)
+        dec=ob.modifiers.new('Runtime surface reduction','DECIMATE');dec.ratio=min(.90,(178000-sum(len(a.data.polygons)*2 for a in objs[1:]))/len(ob.data.polygons));dec.use_collapse_triangulate=True;bpy.ops.object.modifier_apply(modifier=dec.name)
     if ob==hull:
         weighted=ob.modifiers.new('Area weighted armour shading','WEIGHTED_NORMAL');weighted.keep_sharp=True;weighted.mode='FACE_AREA_WITH_ANGLE';weighted.weight=35
         bpy.ops.object.modifier_apply(modifier=weighted.name)
@@ -601,7 +611,7 @@
     o=bpy.data.objects.new(name,None);sc.collection.objects.link(o);o.location=worldp(p);o.parent=parent;o.empty_display_size=2;return o
 for i,p in enumerate(THRUSTERS):empty('Thruster_'+str(i+1),p)
 empty('Camera_Chase',(0,315,110))
-empty('Light_Nav_L',(63,5,1))['color']=[1.0,0.0,0.0];empty('Light_Nav_R',(-63,5,1))['color']=[0.0,1.0,0.0];empty('Light_Beacon',(0,34,50))['color']=[1.0,.12,.0]
+empty('Light_Nav_L',(63,5,1))['color']=[1.0,0.0,0.0];empty('Light_Nav_R',(-63,5,1))['color']=[0.0,1.0,0.0];empty('Light_Beacon',surface(34,0,5))['color']=[1.0,.12,.0]
 asset=[o for o in sc.objects]
 bpy.context.view_layer.update()
 tri=sum(len(o.data.polygons) for o in objs)

codex
The previous export meets the technical limits: six materials, 1K colour textures, 512px ORM maps, and a GLB under 12 MB. The new render will show whether the cleared vent openings and lower far-side arms improve the silhouette.
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/bin/bash -lc 'df -h .
ls -lh /tmp/alien-harvester-check/report.json' in /home/claude-agent/forge-build/forge-assets/jobs/alien-harvester-v1
 succeeded in 0ms:
Filesystem      Size  Used Avail Use% Mounted on
/dev/sda1       150G  137G  6.8G  96% /
-rw-rw-r-- 1 claude-agent claude-agent 5.8K Oct 16 19:02 /tmp/alien-harvester-check/report.json

diff --git a/jobs/alien-harvester-v1/build_alien-harvester.py b/jobs/alien-harvester-v1/build_alien-harvester.py
index 2fd1298f86ec659e97961d76bdbc9f692a926df6..6e2b4e3d937bd42542695df9d07d2d1f4779682a
--- a/jobs/alien-harvester-v1/build_alien-harvester.py
+++ b/jobs/alien-harvester-v1/build_alien-harvester.py
@@ -161,7 +161,7 @@
 # Identical metal stock normal bakes share one image in the delivered GLB.
 MATS[3].node_tree.nodes['Normal'].image=MATS[1].node_tree.nodes['Normal'].image
 
-for name,col,strength in [('Lamps',(1,.15,.008,1),2.3),('Engines',(1,.22,.018,1),2.2)]:
+for name,col,strength in [('Lamps',(1,.18,.004,1),1.8),('Engines',(1,.24,.009,1),1.8)]:
     m=bpy.data.materials.new(name);m.use_nodes=True;p=m.node_tree.nodes.get('Principled BSDF');p.inputs['Base Color'].default_value=col;p.inputs['Roughness'].default_value=.34;p.inputs['Metallic'].default_value=.3;p.inputs['Emission Color'].default_value=col;p.inputs['Emission Strength'].default_value=strength;MATS.append(m)
 
 class Geo:
@@ -271,7 +271,11 @@
     for i in range(len(profile)-1):
         a,b=profile[i:i+2]
         if a[0]<=y<=b[0]:
-            t=(y-a[0])/(b[0]-a[0]);t=t*t*(3-2*t);return tuple(a[k]*(1-t)+b[k]*t for k in range(1,4))
+            # C1-continuous loft: no flattened shoulder or pinched ring at each
+            # control station, and the overlaid armour uses the identical skin.
+            prev=profile[max(0,i-1)];nxt=profile[min(len(profile)-1,i+2)]
+            span=b[0]-a[0];t=(y-a[0])/span
+            return tuple((2*t**3-3*t*t+1)*a[k]+(t**3-2*t*t+t)*span*(b[k]-prev[k])/(b[0]-prev[0])+(-2*t**3+3*t*t)*b[k]+(t**3-t*t)*span*(nxt[k]-a[k])/(nxt[0]-a[0]) for k in range(1,4))
     return profile[0][1:] if y<profile[0][0] else profile[-1][1:]
 def surface(y,t,offset=0):
     w,z,c=shape(y);return Vector(((w*1.05+offset)*math.sin(t),y,c+(z*1.30+offset)*math.cos(t)))
@@ -350,8 +354,10 @@
     if cy>0:raw=[(-L*.53,-H*.29),(-L*.36,H*.45),(L*.41,H*.42),(L*.52,H*.23),(L*.45,-H*.31),(L*.21,-H*.46),(-L*.35,-H*.43)]
     p2=catmull([(y,0,z) for y,z in raw+[raw[0],raw[1]]],4)[:-4]
     p2=p2[:-1] if (p2[0]-p2[-1]).length<.01 else p2
-    cx=shape(cy)[0]*1.05-.5
-    ringspec=[(.96,0), (1.08,2.3),(1.04,5.4),(.87,6.5),(.79,4.8),(.79,1.8)]
+    # Seat the back into the shell, but keep the entire opening in front of all
+    # overlapping armour, including the broad shoulder at the forward end.
+    cx=max(shape(cy-L*.58+i*L*1.16/32)[0] for i in range(33))*1.05+3.3
+    ringspec=[(.96,-8.0), (1.08,1.2),(1.04,5.4),(.87,6.5),(.79,4.8),(.79,1.8)]
     vs=[];n=len(p2)
     for scale,depth in ringspec:
         for p in p2:vs.append((sign*(cx+depth),cy+p.x*scale,cz+p.z*scale))
@@ -412,8 +418,8 @@
     for j in range(6):
         u=j/5;r=26.1-7*u;a=t+.085*u;pts.append((r*math.cos(a),-201+11*u,r*.89*math.sin(a)))
     tube(h,pts,[.90,1.05,.98,.81,.54,.23],2,9)
-    lit=[Vector(p)+Vector((-.16*math.cos(t),-.72,-.16*math.sin(t))) for p in pts]
-    tube(h,lit,[.29,.46,.44,.38,.24,.08],4,7)
+    lit=[Vector(p)+Vector((-.16*math.cos(t),-.98,-.16*math.sin(t))) for p in pts]
+    tube(h,lit,[.46,.65,.61,.47,.27,.08],4,8)
     # Dark rib continuing down the gullet from each luminous tooth.
     pts2=[]
     for j in range(6):
@@ -454,7 +460,7 @@
         theta=row*.43;base=surface(yy+row*3,theta,2.0);ht=(23 if row==0 else 18)*math.sin((i+1)/9*math.pi)**.5*(1+.10*math.sin(i*2.7))
         pts=catmull([base,base+Vector((row*2,3,ht*.4)),base+Vector((row*5,11,ht*.78)),base+Vector((row*7,21,ht))],5)
         rr=[3.6*(1-j/(len(pts)-1))**1.05+.035 for j in range(len(pts))]
-        tube(h,pts,rr,2,10,.66);ellipsoid(h,base,(5.3,7.8,2.8),0,18,8)
+        tube(h,pts,rr,2,12,ellipse=.66);ellipsoid(h,base,(5.3,7.8,2.8),0,18,8)
         ring(h,base+Vector((0,0,1.8)),(0,0,1),4.1,.6,2,24,7,1.25)
         tube(h,[base+Vector((row*2,0,1)),base+Vector((row*3,4,ht*.36)),base+Vector((row*5,11,ht*.7))],[.35,.28,.05],1,6)
 
@@ -462,7 +468,7 @@
 for s in [-1,1]:
     for zz in [-14,15]:
         pts=catmull([(s*28,132,zz),(s*31,163,zz*1.1),(s*26,189,zz*1.08),(s*21,211,zz*.9)],6)
-        rr=[6*(1-i/(len(pts)-1))**.8+.07 for i in range(len(pts))];tube(h,pts,rr,0,14,.58)
+        rr=[6*(1-i/(len(pts)-1))**.8+.07 for i in range(len(pts))];tube(h,pts,rr,0,14,ellipse=.58)
         tube(h,[p+Vector((0,0,2.2 if zz>0 else -2.2)) for p in pts[:-3]],[.30]*len(pts[:-3]),1,6)
 
 # Three main engines, bevelled ring exits, recessed glowing interiors.
@@ -507,6 +513,10 @@
         if side<0:dy=[v+5*math.sin(k*1.4+j) for k,v in enumerate(dy)]
         curl=[(6,dy[0],-12),(18-j,dy[1],-26),(30-j*4,dy[2],-39-j*2),(26-j*4,dy[3],-50-j*2),(16+j,dy[4],-54-j+(3 if side<0 else 0))]
         if j==2:curl=[(5,dy[0],-12),(13,dy[1],-23),(28,dy[2],-34),(28,dy[3],-48),(14,dy[4],-59)]
+        if side<0:
+            # A second, lower fan gives six distinct hanging silhouettes, with
+            # different tip heights rather than three mirrored hidden limbs.
+            curl=[(x*1.13,dy-12,dz*(1.24+.055*j)) for x,dy,dz in curl]
         points=[root]+[root+Vector((side*x,dy,dz)) for x,dy,dz in curl]
         pts=catmull(points,7);N=len(pts)
         rr=[6.5*(1-i/(N-1))+.95 for i in range(N)]
@@ -515,7 +525,7 @@
         for k in range(0,N-2,2):
             a,b=pts[k],pts[min(k+2,N-1)];mid=(a+b)/2;direction=(b-a).normalized();length=(b-a).length
             r=rr[k]+.4
-            tube(g,[a,a+direction*.5,b-direction*.55,b],[r*.91,r*1.08,r*1.02,r*.85],0,14,.88)
+            tube(g,[a,a+direction*.5,b-direction*.55,b],[r*.91,r*1.08,r*1.02,r*.85],0,14,ellipse=.88)
             ring(g,a+direction*.6,direction,r*1.02,.22,1,14,6,.88)
             # One narrow spinal rail down every link; no free-floating greebles.
             lateral=Vector((side,0,0));tube(g,[a+lateral*r*.89,mid+lateral*(r+ .15),b+lateral*r*.79],[.3,.34,.22],2,6)
@@ -585,7 +595,7 @@
 for ob in objs:
     select(ob);mod=ob.modifiers.new('Triangulated runtime surface','TRIANGULATE');bpy.ops.object.modifier_apply(modifier=mod.name)
     if ob==hull:
-        dec=ob.modifiers.new('Runtime surface reduction','DECIMATE');dec.ratio=min(.90,(182000-sum(len(a.data.polygons)*2 for a in objs[1:]))/len(ob.data.polygons));dec.use_collapse_triangulate=True;bpy.ops.object.modifier_apply(modifier=dec.name)
+        dec=ob.modifiers.new('Runtime surface reduction','DECIMATE');dec.ratio=min(.90,(178000-sum(len(a.data.polygons)*2 for a in objs[1:]))/len(ob.data.polygons));dec.use_collapse_triangulate=True;bpy.ops.object.modifier_apply(modifier=dec.name)
     if ob==hull:
         weighted=ob.modifiers.new('Area weighted armour shading','WEIGHTED_NORMAL');weighted.keep_sharp=True;weighted.mode='FACE_AREA_WITH_ANGLE';weighted.weight=35
         bpy.ops.object.modifier_apply(modifier=weighted.name)
@@ -601,7 +611,7 @@
     o=bpy.data.objects.new(name,None);sc.collection.objects.link(o);o.location=worldp(p);o.parent=parent;o.empty_display_size=2;return o
 for i,p in enumerate(THRUSTERS):empty('Thruster_'+str(i+1),p)
 empty('Camera_Chase',(0,315,110))
-empty('Light_Nav_L',(63,5,1))['color']=[1.0,0.0,0.0];empty('Light_Nav_R',(-63,5,1))['color']=[0.0,1.0,0.0];empty('Light_Beacon',(0,34,50))['color']=[1.0,.12,.0]
+empty('Light_Nav_L',(63,5,1))['color']=[1.0,0.0,0.0];empty('Light_Nav_R',(-63,5,1))['color']=[0.0,1.0,0.0];empty('Light_Beacon',surface(34,0,5))['color']=[1.0,.12,.0]
 asset=[o for o in sc.objects]
 bpy.context.view_layer.update()
 tri=sum(len(o.data.polygons) for o in objs)

hook: PreToolUse
hook: PreToolUse
hook: PreToolUse
hook: PreToolUse
hook: PreToolUse Completed
hook: PreToolUse Completed
hook: PreToolUse Completed
hook: PreToolUse Completed
exec
/bin/bash -lc 'ssh gex44 tail -n 6 /root/fal-author/alien-harvester-v1/build.log' in /home/claude-agent/forge-build/forge-assets/jobs/alien-harvester-v1
 succeeded in 463ms:
01:15.289  render           | Saved: '/root/fal-author/alien-harvester-v1/paint-2.png'
HARVESTER 74.9 Render paint-3.png
01:17.582  render           | Saved: '/root/fal-author/alien-harvester-v1/paint-3.png'
HARVESTER 77.2 Render paint-4.png
01:19.888  render           | Saved: '/root/fal-author/alien-harvester-v1/paint-4.png'
HARVESTER 79.5 Render paint-5.png

hook: PreToolUse
hook: PreToolUse
hook: PreToolUse
hook: PreToolUse
hook: PreToolUse Completed
hook: PreToolUse Completed
hook: PreToolUse Completed
hook: PreToolUse Completed
exec
/bin/bash -lc "python3 - <<'PY'
from pathlib import Path
import json
p=Path('/tmp/alien-harvester-check/report.json')
d=json.loads(p.read_text());print(json.dumps({k:d['report'][k] for k in ['triangles','drawCalls','materials','paint']},indent=2))
PY" in /home/claude-agent/forge-build/forge-assets/jobs/alien-harvester-v1
 succeeded in 0ms:
{
  "triangles": 184472,
  "drawCalls": 30,
  "materials": [
    "Paint",
    "Titanium",
    "HeatScorched",
    "Recess",
    "Lamps",
    "Engines"
  ],
  "paint": [
    0.1,
    0.11,
    0.1
  ]
}

diff --git a/jobs/alien-harvester-v1/build_alien-harvester.py b/jobs/alien-harvester-v1/build_alien-harvester.py
index 2fd1298f86ec659e97961d76bdbc9f692a926df6..6e2b4e3d937bd42542695df9d07d2d1f4779682a
--- a/jobs/alien-harvester-v1/build_alien-harvester.py
+++ b/jobs/alien-harvester-v1/build_alien-harvester.py
@@ -161,7 +161,7 @@
 # Identical metal stock normal bakes share one image in the delivered GLB.
 MATS[3].node_tree.nodes['Normal'].image=MATS[1].node_tree.nodes['Normal'].image
 
-for name,col,strength in [('Lamps',(1,.15,.008,1),2.3),('Engines',(1,.22,.018,1),2.2)]:
+for name,col,strength in [('Lamps',(1,.18,.004,1),1.8),('Engines',(1,.24,.009,1),1.8)]:
     m=bpy.data.materials.new(name);m.use_nodes=True;p=m.node_tree.nodes.get('Principled BSDF');p.inputs['Base Color'].default_value=col;p.inputs['Roughness'].default_value=.34;p.inputs['Metallic'].default_value=.3;p.inputs['Emission Color'].default_value=col;p.inputs['Emission Strength'].default_value=strength;MATS.append(m)
 
 class Geo:
@@ -271,7 +271,11 @@
     for i in range(len(profile)-1):
         a,b=profile[i:i+2]
         if a[0]<=y<=b[0]:
-            t=(y-a[0])/(b[0]-a[0]);t=t*t*(3-2*t);return tuple(a[k]*(1-t)+b[k]*t for k in range(1,4))
+            # C1-continuous loft: no flattened shoulder or pinched ring at each
+            # control station, and the overlaid armour uses the identical skin.
+            prev=profile[max(0,i-1)];nxt=profile[min(len(profile)-1,i+2)]
+            span=b[0]-a[0];t=(y-a[0])/span
+            return tuple((2*t**3-3*t*t+1)*a[k]+(t**3-2*t*t+t)*span*(b[k]-prev[k])/(b[0]-prev[0])+(-2*t**3+3*t*t)*b[k]+(t**3-t*t)*span*(nxt[k]-a[k])/(nxt[0]-a[0]) for k in range(1,4))
     return profile[0][1:] if y<profile[0][0] else profile[-1][1:]
 def surface(y,t,offset=0):
     w,z,c=shape(y);return Vector(((w*1.05+offset)*math.sin(t),y,c+(z*1.30+offset)*math.cos(t)))
@@ -350,8 +354,10 @@
     if cy>0:raw=[(-L*.53,-H*.29),(-L*.36,H*.45),(L*.41,H*.42),(L*.52,H*.23),(L*.45,-H*.31),(L*.21,-H*.46),(-L*.35,-H*.43)]
     p2=catmull([(y,0,z) for y,z in raw+[raw[0],raw[1]]],4)[:-4]
     p2=p2[:-1] if (p2[0]-p2[-1]).length<.01 else p2
-    cx=shape(cy)[0]*1.05-.5
-    ringspec=[(.96,0), (1.08,2.3),(1.04,5.4),(.87,6.5),(.79,4.8),(.79,1.8)]
+    # Seat the back into the shell, but keep the entire opening in front of all
+    # overlapping armour, including the broad shoulder at the forward end.
+    cx=max(shape(cy-L*.58+i*L*1.16/32)[0] for i in range(33))*1.05+3.3
+    ringspec=[(.96,-8.0), (1.08,1.2),(1.04,5.4),(.87,6.5),(.79,4.8),(.79,1.8)]
     vs=[];n=len(p2)
     for scale,depth in ringspec:
         for p in p2:vs.append((sign*(cx+depth),cy+p.x*scale,cz+p.z*scale))
@@ -412,8 +418,8 @@
     for j in range(6):
         u=j/5;r=26.1-7*u;a=t+.085*u;pts.append((r*math.cos(a),-201+11*u,r*.89*math.sin(a)))
     tube(h,pts,[.90,1.05,.98,.81,.54,.23],2,9)
-    lit=[Vector(p)+Vector((-.16*math.cos(t),-.72,-.16*math.sin(t))) for p in pts]
-    tube(h,lit,[.29,.46,.44,.38,.24,.08],4,7)
+    lit=[Vector(p)+Vector((-.16*math.cos(t),-.98,-.16*math.sin(t))) for p in pts]
+    tube(h,lit,[.46,.65,.61,.47,.27,.08],4,8)
     # Dark rib continuing down the gullet from each luminous tooth.
     pts2=[]
     for j in range(6):
@@ -454,7 +460,7 @@
         theta=row*.43;base=surface(yy+row*3,theta,2.0);ht=(23 if row==0 else 18)*math.sin((i+1)/9*math.pi)**.5*(1+.10*math.sin(i*2.7))
         pts=catmull([base,base+Vector((row*2,3,ht*.4)),base+Vector((row*5,11,ht*.78)),base+Vector((row*7,21,ht))],5)
         rr=[3.6*(1-j/(len(pts)-1))**1.05+.035 for j in range(len(pts))]
-        tube(h,pts,rr,2,10,.66);ellipsoid(h,base,(5.3,7.8,2.8),0,18,8)
+        tube(h,pts,rr,2,12,ellipse=.66);ellipsoid(h,base,(5.3,7.8,2.8),0,18,8)
         ring(h,base+Vector((0,0,1.8)),(0,0,1),4.1,.6,2,24,7,1.25)
         tube(h,[base+Vector((row*2,0,1)),base+Vector((row*3,4,ht*.36)),base+Vector((row*5,11,ht*.7))],[.35,.28,.05],1,6)
 
@@ -462,7 +468,7 @@
 for s in [-1,1]:
     for zz in [-14,15]:
         pts=catmull([(s*28,132,zz),(s*31,163,zz*1.1),(s*26,189,zz*1.08),(s*21,211,zz*.9)],6)
-        rr=[6*(1-i/(len(pts)-1))**.8+.07 for i in range(len(pts))];tube(h,pts,rr,0,14,.58)
+        rr=[6*(1-i/(len(pts)-1))**.8+.07 for i in range(len(pts))];tube(h,pts,rr,0,14,ellipse=.58)
         tube(h,[p+Vector((0,0,2.2 if zz>0 else -2.2)) for p in pts[:-3]],[.30]*len(pts[:-3]),1,6)
 
 # Three main engines, bevelled ring exits, recessed glowing interiors.
@@ -507,6 +513,10 @@
         if side<0:dy=[v+5*math.sin(k*1.4+j) for k,v in enumerate(dy)]
         curl=[(6,dy[0],-12),(18-j,dy[1],-26),(30-j*4,dy[2],-39-j*2),(26-j*4,dy[3],-50-j*2),(16+j,dy[4],-54-j+(3 if side<0 else 0))]
         if j==2:curl=[(5,dy[0],-12),(13,dy[1],-23),(28,dy[2],-34),(28,dy[3],-48),(14,dy[4],-59)]
+        if side<0:
+            # A second, lower fan gives six distinct hanging silhouettes, with
+            # different tip heights rather than three mirrored hidden limbs.
+            curl=[(x*1.13,dy-12,dz*(1.24+.055*j)) for x,dy,dz in curl]
         points=[root]+[root+Vector((side*x,dy,dz)) for x,dy,dz in curl]
         pts=catmull(points,7);N=len(pts)
         rr=[6.5*(1-i/(N-1))+.95 for i in range(N)]
@@ -515,7 +525,7 @@
         for k in range(0,N-2,2):
             a,b=pts[k],pts[min(k+2,N-1)];mid=(a+b)/2;direction=(b-a).normalized();length=(b-a).length
             r=rr[k]+.4
-            tube(g,[a,a+direction*.5,b-direction*.55,b],[r*.91,r*1.08,r*1.02,r*.85],0,14,.88)
+            tube(g,[a,a+direction*.5,b-direction*.55,b],[r*.91,r*1.08,r*1.02,r*.85],0,14,ellipse=.88)
             ring(g,a+direction*.6,direction,r*1.02,.22,1,14,6,.88)
             # One narrow spinal rail down every link; no free-floating greebles.
             lateral=Vector((side,0,0));tube(g,[a+lateral*r*.89,mid+lateral*(r+ .15),b+lateral*r*.79],[.3,.34,.22],2,6)
@@ -585,7 +595,7 @@
 for ob in objs:
     select(ob);mod=ob.modifiers.new('Triangulated runtime surface','TRIANGULATE');bpy.ops.object.modifier_apply(modifier=mod.name)
     if ob==hull:
-        dec=ob.modifiers.new('Runtime surface reduction','DECIMATE');dec.ratio=min(.90,(182000-sum(len(a.data.polygons)*2 for a in objs[1:]))/len(ob.data.polygons));dec.use_collapse_triangulate=True;bpy.ops.object.modifier_apply(modifier=dec.name)
+        dec=ob.modifiers.new('Runtime surface reduction','DECIMATE');dec.ratio=min(.90,(178000-sum(len(a.data.polygons)*2 for a in objs[1:]))/len(ob.data.polygons));dec.use_collapse_triangulate=True;bpy.ops.object.modifier_apply(modifier=dec.name)
     if ob==hull:
         weighted=ob.modifiers.new('Area weighted armour shading','WEIGHTED_NORMAL');weighted.keep_sharp=True;weighted.mode='FACE_AREA_WITH_ANGLE';weighted.weight=35
         bpy.ops.object.modifier_apply(modifier=weighted.name)
@@ -601,7 +611,7 @@
     o=bpy.data.objects.new(name,None);sc.collection.objects.link(o);o.location=worldp(p);o.parent=parent;o.empty_display_size=2;return o
 for i,p in enumerate(THRUSTERS):empty('Thruster_'+str(i+1),p)
 empty('Camera_Chase',(0,315,110))
-empty('Light_Nav_L',(63,5,1))['color']=[1.0,0.0,0.0];empty('Light_Nav_R',(-63,5,1))['color']=[0.0,1.0,0.0];empty('Light_Beacon',(0,34,50))['color']=[1.0,.12,.0]
+empty('Light_Nav_L',(63,5,1))['color']=[1.0,0.0,0.0];empty('Light_Nav_R',(-63,5,1))['color']=[0.0,1.0,0.0];empty('Light_Beacon',surface(34,0,5))['color']=[1.0,.12,.0]
 asset=[o for o in sc.objects]
 bpy.context.view_layer.update()
 tri=sum(len(o.data.polygons) for o in objs)

 succeeded in 83313ms:
hook: PreToolUse
hook: PreToolUse
hook: PreToolUse
hook: PreToolUse
hook: PreToolUse Completed
hook: PreToolUse Completed
hook: PreToolUse Completed
hook: PreToolUse Completed
exec
/bin/bash -lc 'scp gex44:/root/fal-author/alien-harvester-v1/alien-harvester.glb gex44:/root/fal-author/alien-harvester-v1/final.png gex44:/root/fal-author/alien-harvester-v1/side.png gex44:/root/fal-author/alien-harvester-v1/clay.png gex44:/root/fal-author/alien-harvester-v1/paints.png gex44:/root/fal-author/alien-harvester-v1/nodes.json gex44:/root/fal-author/alien-harvester-v1/NOTES.md gex44:/root/fal-author/alien-harvester-v1/close.png gex44:/root/fal-author/alien-harvester-v1/arms-test.png gex44:/root/fal-author/alien-harvester-v1/rear.png .' in /home/claude-agent/forge-build/forge-assets/jobs/alien-harvester-v1
diff --git a/jobs/alien-harvester-v1/build_alien-harvester.py b/jobs/alien-harvester-v1/build_alien-harvester.py
index 2fd1298f86ec659e97961d76bdbc9f692a926df6..6e2b4e3d937bd42542695df9d07d2d1f4779682a
--- a/jobs/alien-harvester-v1/build_alien-harvester.py
+++ b/jobs/alien-harvester-v1/build_alien-harvester.py
@@ -161,7 +161,7 @@
 # Identical metal stock normal bakes share one image in the delivered GLB.
 MATS[3].node_tree.nodes['Normal'].image=MATS[1].node_tree.nodes['Normal'].image
 
-for name,col,strength in [('Lamps',(1,.15,.008,1),2.3),('Engines',(1,.22,.018,1),2.2)]:
+for name,col,strength in [('Lamps',(1,.18,.004,1),1.8),('Engines',(1,.24,.009,1),1.8)]:
     m=bpy.data.materials.new(name);m.use_nodes=True;p=m.node_tree.nodes.get('Principled BSDF');p.inputs['Base Color'].default_value=col;p.inputs['Roughness'].default_value=.34;p.inputs['Metallic'].default_value=.3;p.inputs['Emission Color'].default_value=col;p.inputs['Emission Strength'].default_value=strength;MATS.append(m)
 
 class Geo:
@@ -271,7 +271,11 @@
     for i in range(len(profile)-1):
         a,b=profile[i:i+2]
         if a[0]<=y<=b[0]:
-            t=(y-a[0])/(b[0]-a[0]);t=t*t*(3-2*t);return tuple(a[k]*(1-t)+b[k]*t for k in range(1,4))
+            # C1-continuous loft: no flattened shoulder or pinched ring at each
+            # control station, and the overlaid armour uses the identical skin.
+            prev=profile[max(0,i-1)];nxt=profile[min(len(profile)-1,i+2)]
+            span=b[0]-a[0];t=(y-a[0])/span
+            return tuple((2*t**3-3*t*t+1)*a[k]+(t**3-2*t*t+t)*span*(b[k]-prev[k])/(b[0]-prev[0])+(-2*t**3+3*t*t)*b[k]+(t**3-t*t)*span*(nxt[k]-a[k])/(nxt[0]-a[0]) for k in range(1,4))
     return profile[0][1:] if y<profile[0][0] else profile[-1][1:]
 def surface(y,t,offset=0):
     w,z,c=shape(y);return Vector(((w*1.05+offset)*math.sin(t),y,c+(z*1.30+offset)*math.cos(t)))
@@ -350,8 +354,10 @@
     if cy>0:raw=[(-L*.53,-H*.29),(-L*.36,H*.45),(L*.41,H*.42),(L*.52,H*.23),(L*.45,-H*.31),(L*.21,-H*.46),(-L*.35,-H*.43)]
     p2=catmull([(y,0,z) for y,z in raw+[raw[0],raw[1]]],4)[:-4]
     p2=p2[:-1] if (p2[0]-p2[-1]).length<.01 else p2
-    cx=shape(cy)[0]*1.05-.5
-    ringspec=[(.96,0), (1.08,2.3),(1.04,5.4),(.87,6.5),(.79,4.8),(.79,1.8)]
+    # Seat the back into the shell, but keep the entire opening in front of all
+    # overlapping armour, including the broad shoulder at the forward end.
+    cx=max(shape(cy-L*.58+i*L*1.16/32)[0] for i in range(33))*1.05+3.3
+    ringspec=[(.96,-8.0), (1.08,1.2),(1.04,5.4),(.87,6.5),(.79,4.8),(.79,1.8)]
     vs=[];n=len(p2)
     for scale,depth in ringspec:
         for p in p2:vs.append((sign*(cx+depth),cy+p.x*scale,cz+p.z*scale))
@@ -412,8 +418,8 @@
     for j in range(6):
         u=j/5;r=26.1-7*u;a=t+.085*u;pts.append((r*math.cos(a),-201+11*u,r*.89*math.sin(a)))
     tube(h,pts,[.90,1.05,.98,.81,.54,.23],2,9)
-    lit=[Vector(p)+Vector((-.16*math.cos(t),-.72,-.16*math.sin(t))) for p in pts]
-    tube(h,lit,[.29,.46,.44,.38,.24,.08],4,7)
+    lit=[Vector(p)+Vector((-.16*math.cos(t),-.98,-.16*math.sin(t))) for p in pts]
+    tube(h,lit,[.46,.65,.61,.47,.27,.08],4,8)
     # Dark rib continuing down the gullet from each luminous tooth.
     pts2=[]
     for j in range(6):
@@ -454,7 +460,7 @@
         theta=row*.43;base=surface(yy+row*3,theta,2.0);ht=(23 if row==0 else 18)*math.sin((i+1)/9*math.pi)**.5*(1+.10*math.sin(i*2.7))
         pts=catmull([base,base+Vector((row*2,3,ht*.4)),base+Vector((row*5,11,ht*.78)),base+Vector((row*7,21,ht))],5)
         rr=[3.6*(1-j/(len(pts)-1))**1.05+.035 for j in range(len(pts))]
-        tube(h,pts,rr,2,10,.66);ellipsoid(h,base,(5.3,7.8,2.8),0,18,8)
+        tube(h,pts,rr,2,12,ellipse=.66);ellipsoid(h,base,(5.3,7.8,2.8),0,18,8)
         ring(h,base+Vector((0,0,1.8)),(0,0,1),4.1,.6,2,24,7,1.25)
         tube(h,[base+Vector((row*2,0,1)),base+Vector((row*3,4,ht*.36)),base+Vector((row*5,11,ht*.7))],[.35,.28,.05],1,6)
 
@@ -462,7 +468,7 @@
 for s in [-1,1]:
     for zz in [-14,15]:
         pts=catmull([(s*28,132,zz),(s*31,163,zz*1.1),(s*26,189,zz*1.08),(s*21,211,zz*.9)],6)
-        rr=[6*(1-i/(len(pts)-1))**.8+.07 for i in range(len(pts))];tube(h,pts,rr,0,14,.58)
+        rr=[6*(1-i/(len(pts)-1))**.8+.07 for i in range(len(pts))];tube(h,pts,rr,0,14,ellipse=.58)
         tube(h,[p+Vector((0,0,2.2 if zz>0 else -2.2)) for p in pts[:-3]],[.30]*len(pts[:-3]),1,6)
 
 # Three main engines, bevelled ring exits, recessed glowing interiors.
@@ -507,6 +513,10 @@
         if side<0:dy=[v+5*math.sin(k*1.4+j) for k,v in enumerate(dy)]
         curl=[(6,dy[0],-12),(18-j,dy[1],-26),(30-j*4,dy[2],-39-j*2),(26-j*4,dy[3],-50-j*2),(16+j,dy[4],-54-j+(3 if side<0 else 0))]
         if j==2:curl=[(5,dy[0],-12),(13,dy[1],-23),(28,dy[2],-34),(28,dy[3],-48),(14,dy[4],-59)]
+        if side<0:
+            # A second, lower fan gives six distinct hanging silhouettes, with
+            # different tip heights rather than three mirrored hidden limbs.
+            curl=[(x*1.13,dy-12,dz*(1.24+.055*j)) for x,dy,dz in curl]
         points=[root]+[root+Vector((side*x,dy,dz)) for x,dy,dz in curl]
         pts=catmull(points,7);N=len(pts)
         rr=[6.5*(1-i/(N-1))+.95 for i in range(N)]
@@ -515,7 +525,7 @@
         for k in range(0,N-2,2):
             a,b=pts[k],pts[min(k+2,N-1)];mid=(a+b)/2;direction=(b-a).normalized();length=(b-a).length
             r=rr[k]+.4
-            tube(g,[a,a+direction*.5,b-direction*.55,b],[r*.91,r*1.08,r*1.02,r*.85],0,14,.88)
+            tube(g,[a,a+direction*.5,b-direction*.55,b],[r*.91,r*1.08,r*1.02,r*.85],0,14,ellipse=.88)
             ring(g,a+direction*.6,direction,r*1.02,.22,1,14,6,.88)
             # One narrow spinal rail down every link; no free-floating greebles.
             lateral=Vector((side,0,0));tube(g,[a+lateral*r*.89,mid+lateral*(r+ .15),b+lateral*r*.79],[.3,.34,.22],2,6)
@@ -585,7 +595,7 @@
 for ob in objs:
     select(ob);mod=ob.modifiers.new('Triangulated runtime surface','TRIANGULATE');bpy.ops.object.modifier_apply(modifier=mod.name)
     if ob==hull:
-        dec=ob.modifiers.new('Runtime surface reduction','DECIMATE');dec.ratio=min(.90,(182000-sum(len(a.data.polygons)*2 for a in objs[1:]))/len(ob.data.polygons));dec.use_collapse_triangulate=True;bpy.ops.object.modifier_apply(modifier=dec.name)
+        dec=ob.modifiers.new('Runtime surface reduction','DECIMATE');dec.ratio=min(.90,(178000-sum(len(a.data.polygons)*2 for a in objs[1:]))/len(ob.data.polygons));dec.use_collapse_triangulate=True;bpy.ops.object.modifier_apply(modifier=dec.name)
     if ob==hull:
         weighted=ob.modifiers.new('Area weighted armour shading','WEIGHTED_NORMAL');weighted.keep_sharp=True;weighted.mode='FACE_AREA_WITH_ANGLE';weighted.weight=35
         bpy.ops.object.modifier_apply(modifier=weighted.name)
@@ -601,7 +611,7 @@
     o=bpy.data.objects.new(name,None);sc.collection.objects.link(o);o.location=worldp(p);o.parent=parent;o.empty_display_size=2;return o
 for i,p in enumerate(THRUSTERS):empty('Thruster_'+str(i+1),p)
 empty('Camera_Chase',(0,315,110))
-empty('Light_Nav_L',(63,5,1))['color']=[1.0,0.0,0.0];empty('Light_Nav_R',(-63,5,1))['color']=[0.0,1.0,0.0];empty('Light_Beacon',(0,34,50))['color']=[1.0,.12,.0]
+empty('Light_Nav_L',(63,5,1))['color']=[1.0,0.0,0.0];empty('Light_Nav_R',(-63,5,1))['color']=[0.0,1.0,0.0];empty('Light_Beacon',surface(34,0,5))['color']=[1.0,.12,.0]
 asset=[o for o in sc.objects]
 bpy.context.view_layer.update()
 tri=sum(len(o.data.polygons) for o in objs)

 succeeded in 9968ms:
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hook: PreToolUse Completed
exec
/bin/bash -lc 'cp alien-harvester.glb /tmp/alien-harvester-check/alien-harvester.glb
node /tmp/alien-harvester-check/check.cjs > /tmp/alien-harvester-check/browser-final.log 2>&1' in /home/claude-agent/forge-build/forge-assets/jobs/alien-harvester-v1
hook: PreToolUse
hook: PreToolUse
hook: PreToolUse
hook: PreToolUse
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exec
/bin/bash -lc 'timeout 240 geminix < /tmp/alien-harvester-review/request-final.md > /tmp/alien-harvester-review/review-final.txt 2>&1' in /home/claude-agent/forge-build/forge-assets/jobs/alien-harvester-v1
diff --git a/jobs/alien-harvester-v1/build_alien-harvester.py b/jobs/alien-harvester-v1/build_alien-harvester.py
index 2fd1298f86ec659e97961d76bdbc9f692a926df6..6e2b4e3d937bd42542695df9d07d2d1f4779682a
--- a/jobs/alien-harvester-v1/build_alien-harvester.py
+++ b/jobs/alien-harvester-v1/build_alien-harvester.py
@@ -161,7 +161,7 @@
 # Identical metal stock normal bakes share one image in the delivered GLB.
 MATS[3].node_tree.nodes['Normal'].image=MATS[1].node_tree.nodes['Normal'].image
 
-for name,col,strength in [('Lamps',(1,.15,.008,1),2.3),('Engines',(1,.22,.018,1),2.2)]:
+for name,col,strength in [('Lamps',(1,.18,.004,1),1.8),('Engines',(1,.24,.009,1),1.8)]:
     m=bpy.data.materials.new(name);m.use_nodes=True;p=m.node_tree.nodes.get('Principled BSDF');p.inputs['Base Color'].default_value=col;p.inputs['Roughness'].default_value=.34;p.inputs['Metallic'].default_value=.3;p.inputs['Emission Color'].default_value=col;p.inputs['Emission Strength'].default_value=strength;MATS.append(m)
 
 class Geo:
@@ -271,7 +271,11 @@
     for i in range(len(profile)-1):
         a,b=profile[i:i+2]
         if a[0]<=y<=b[0]:
-            t=(y-a[0])/(b[0]-a[0]);t=t*t*(3-2*t);return tuple(a[k]*(1-t)+b[k]*t for k in range(1,4))
+            # C1-continuous loft: no flattened shoulder or pinched ring at each
+            # control station, and the overlaid armour uses the identical skin.
+            prev=profile[max(0,i-1)];nxt=profile[min(len(profile)-1,i+2)]
+            span=b[0]-a[0];t=(y-a[0])/span
+            return tuple((2*t**3-3*t*t+1)*a[k]+(t**3-2*t*t+t)*span*(b[k]-prev[k])/(b[0]-prev[0])+(-2*t**3+3*t*t)*b[k]+(t**3-t*t)*span*(nxt[k]-a[k])/(nxt[0]-a[0]) for k in range(1,4))
     return profile[0][1:] if y<profile[0][0] else profile[-1][1:]
 def surface(y,t,offset=0):
     w,z,c=shape(y);return Vector(((w*1.05+offset)*math.sin(t),y,c+(z*1.30+offset)*math.cos(t)))
@@ -350,8 +354,10 @@
     if cy>0:raw=[(-L*.53,-H*.29),(-L*.36,H*.45),(L*.41,H*.42),(L*.52,H*.23),(L*.45,-H*.31),(L*.21,-H*.46),(-L*.35,-H*.43)]
     p2=catmull([(y,0,z) for y,z in raw+[raw[0],raw[1]]],4)[:-4]
     p2=p2[:-1] if (p2[0]-p2[-1]).length<.01 else p2
-    cx=shape(cy)[0]*1.05-.5
-    ringspec=[(.96,0), (1.08,2.3),(1.04,5.4),(.87,6.5),(.79,4.8),(.79,1.8)]
+    # Seat the back into the shell, but keep the entire opening in front of all
+    # overlapping armour, including the broad shoulder at the forward end.
+    cx=max(shape(cy-L*.58+i*L*1.16/32)[0] for i in range(33))*1.05+3.3
+    ringspec=[(.96,-8.0), (1.08,1.2),(1.04,5.4),(.87,6.5),(.79,4.8),(.79,1.8)]
     vs=[];n=len(p2)
     for scale,depth in ringspec:
         for p in p2:vs.append((sign*(cx+depth),cy+p.x*scale,cz+p.z*scale))
@@ -412,8 +418,8 @@
     for j in range(6):
         u=j/5;r=26.1-7*u;a=t+.085*u;pts.append((r*math.cos(a),-201+11*u,r*.89*math.sin(a)))
     tube(h,pts,[.90,1.05,.98,.81,.54,.23],2,9)
-    lit=[Vector(p)+Vector((-.16*math.cos(t),-.72,-.16*math.sin(t))) for p in pts]
-    tube(h,lit,[.29,.46,.44,.38,.24,.08],4,7)
+    lit=[Vector(p)+Vector((-.16*math.cos(t),-.98,-.16*math.sin(t))) for p in pts]
+    tube(h,lit,[.46,.65,.61,.47,.27,.08],4,8)
     # Dark rib continuing down the gullet from each luminous tooth.
     pts2=[]
     for j in range(6):
@@ -454,7 +460,7 @@
         theta=row*.43;base=surface(yy+row*3,theta,2.0);ht=(23 if row==0 else 18)*math.sin((i+1)/9*math.pi)**.5*(1+.10*math.sin(i*2.7))
         pts=catmull([base,base+Vector((row*2,3,ht*.4)),base+Vector((row*5,11,ht*.78)),base+Vector((row*7,21,ht))],5)
         rr=[3.6*(1-j/(len(pts)-1))**1.05+.035 for j in range(len(pts))]
-        tube(h,pts,rr,2,10,.66);ellipsoid(h,base,(5.3,7.8,2.8),0,18,8)
+        tube(h,pts,rr,2,12,ellipse=.66);ellipsoid(h,base,(5.3,7.8,2.8),0,18,8)
         ring(h,base+Vector((0,0,1.8)),(0,0,1),4.1,.6,2,24,7,1.25)
         tube(h,[base+Vector((row*2,0,1)),base+Vector((row*3,4,ht*.36)),base+Vector((row*5,11,ht*.7))],[.35,.28,.05],1,6)
 
@@ -462,7 +468,7 @@
 for s in [-1,1]:
     for zz in [-14,15]:
         pts=catmull([(s*28,132,zz),(s*31,163,zz*1.1),(s*26,189,zz*1.08),(s*21,211,zz*.9)],6)
-        rr=[6*(1-i/(len(pts)-1))**.8+.07 for i in range(len(pts))];tube(h,pts,rr,0,14,.58)
+        rr=[6*(1-i/(len(pts)-1))**.8+.07 for i in range(len(pts))];tube(h,pts,rr,0,14,ellipse=.58)
         tube(h,[p+Vector((0,0,2.2 if zz>0 else -2.2)) for p in pts[:-3]],[.30]*len(pts[:-3]),1,6)
 
 # Three main engines, bevelled ring exits, recessed glowing interiors.
@@ -507,6 +513,10 @@
         if side<0:dy=[v+5*math.sin(k*1.4+j) for k,v in enumerate(dy)]
         curl=[(6,dy[0],-12),(18-j,dy[1],-26),(30-j*4,dy[2],-39-j*2),(26-j*4,dy[3],-50-j*2),(16+j,dy[4],-54-j+(3 if side<0 else 0))]
         if j==2:curl=[(5,dy[0],-12),(13,dy[1],-23),(28,dy[2],-34),(28,dy[3],-48),(14,dy[4],-59)]
+        if side<0:
+            # A second, lower fan gives six distinct hanging silhouettes, with
+            # different tip heights rather than three mirrored hidden limbs.
+            curl=[(x*1.13,dy-12,dz*(1.24+.055*j)) for x,dy,dz in curl]
         points=[root]+[root+Vector((side*x,dy,dz)) for x,dy,dz in curl]
         pts=catmull(points,7);N=len(pts)
         rr=[6.5*(1-i/(N-1))+.95 for i in range(N)]
@@ -515,7 +525,7 @@
         for k in range(0,N-2,2):
             a,b=pts[k],pts[min(k+2,N-1)];mid=(a+b)/2;direction=(b-a).normalized();length=(b-a).length
             r=rr[k]+.4
-            tube(g,[a,a+direction*.5,b-direction*.55,b],[r*.91,r*1.08,r*1.02,r*.85],0,14,.88)
+            tube(g,[a,a+direction*.5,b-direction*.55,b],[r*.91,r*1.08,r*1.02,r*.85],0,14,ellipse=.88)
             ring(g,a+direction*.6,direction,r*1.02,.22,1,14,6,.88)
             # One narrow spinal rail down every link; no free-floating greebles.
             lateral=Vector((side,0,0));tube(g,[a+lateral*r*.89,mid+lateral*(r+ .15),b+lateral*r*.79],[.3,.34,.22],2,6)
@@ -585,7 +595,7 @@
 for ob in objs:
     select(ob);mod=ob.modifiers.new('Triangulated runtime surface','TRIANGULATE');bpy.ops.object.modifier_apply(modifier=mod.name)
     if ob==hull:
-        dec=ob.modifiers.new('Runtime surface reduction','DECIMATE');dec.ratio=min(.90,(182000-sum(len(a.data.polygons)*2 for a in objs[1:]))/len(ob.data.polygons));dec.use_collapse_triangulate=True;bpy.ops.object.modifier_apply(modifier=dec.name)
+        dec=ob.modifiers.new('Runtime surface reduction','DECIMATE');dec.ratio=min(.90,(178000-sum(len(a.data.polygons)*2 for a in objs[1:]))/len(ob.data.polygons));dec.use_collapse_triangulate=True;bpy.ops.object.modifier_apply(modifier=dec.name)
     if ob==hull:
         weighted=ob.modifiers.new('Area weighted armour shading','WEIGHTED_NORMAL');weighted.keep_sharp=True;weighted.mode='FACE_AREA_WITH_ANGLE';weighted.weight=35
         bpy.ops.object.modifier_apply(modifier=weighted.name)
@@ -601,7 +611,7 @@
     o=bpy.data.objects.new(name,None);sc.collection.objects.link(o);o.location=worldp(p);o.parent=parent;o.empty_display_size=2;return o
 for i,p in enumerate(THRUSTERS):empty('Thruster_'+str(i+1),p)
 empty('Camera_Chase',(0,315,110))
-empty('Light_Nav_L',(63,5,1))['color']=[1.0,0.0,0.0];empty('Light_Nav_R',(-63,5,1))['color']=[0.0,1.0,0.0];empty('Light_Beacon',(0,34,50))['color']=[1.0,.12,.0]
+empty('Light_Nav_L',(63,5,1))['color']=[1.0,0.0,0.0];empty('Light_Nav_R',(-63,5,1))['color']=[0.0,1.0,0.0];empty('Light_Beacon',surface(34,0,5))['color']=[1.0,.12,.0]
 asset=[o for o in sc.objects]
 bpy.context.view_layer.update()
 tri=sum(len(o.data.polygons) for o in objs)

hook: PreToolUse
hook: PreToolUse Completed
hook: PreToolUse
hook: PreToolUse Completed
hook: PreToolUse
hook: PreToolUse Completed
diff --git a/jobs/alien-harvester-v1/build_alien-harvester.py b/jobs/alien-harvester-v1/build_alien-harvester.py
index 2fd1298f86ec659e97961d76bdbc9f692a926df6..6e2b4e3d937bd42542695df9d07d2d1f4779682a
--- a/jobs/alien-harvester-v1/build_alien-harvester.py
+++ b/jobs/alien-harvester-v1/build_alien-harvester.py
@@ -161,7 +161,7 @@
 # Identical metal stock normal bakes share one image in the delivered GLB.
 MATS[3].node_tree.nodes['Normal'].image=MATS[1].node_tree.nodes['Normal'].image
 
-for name,col,strength in [('Lamps',(1,.15,.008,1),2.3),('Engines',(1,.22,.018,1),2.2)]:
+for name,col,strength in [('Lamps',(1,.18,.004,1),1.8),('Engines',(1,.24,.009,1),1.8)]:
     m=bpy.data.materials.new(name);m.use_nodes=True;p=m.node_tree.nodes.get('Principled BSDF');p.inputs['Base Color'].default_value=col;p.inputs['Roughness'].default_value=.34;p.inputs['Metallic'].default_value=.3;p.inputs['Emission Color'].default_value=col;p.inputs['Emission Strength'].default_value=strength;MATS.append(m)
 
 class Geo:
@@ -271,7 +271,11 @@
     for i in range(len(profile)-1):
         a,b=profile[i:i+2]
         if a[0]<=y<=b[0]:
-            t=(y-a[0])/(b[0]-a[0]);t=t*t*(3-2*t);return tuple(a[k]*(1-t)+b[k]*t for k in range(1,4))
+            # C1-continuous loft: no flattened shoulder or pinched ring at each
+            # control station, and the overlaid armour uses the identical skin.
+            prev=profile[max(0,i-1)];nxt=profile[min(len(profile)-1,i+2)]
+            span=b[0]-a[0];t=(y-a[0])/span
+            return tuple((2*t**3-3*t*t+1)*a[k]+(t**3-2*t*t+t)*span*(b[k]-prev[k])/(b[0]-prev[0])+(-2*t**3+3*t*t)*b[k]+(t**3-t*t)*span*(nxt[k]-a[k])/(nxt[0]-a[0]) for k in range(1,4))
     return profile[0][1:] if y<profile[0][0] else profile[-1][1:]
 def surface(y,t,offset=0):
     w,z,c=shape(y);return Vector(((w*1.05+offset)*math.sin(t),y,c+(z*1.30+offset)*math.cos(t)))
@@ -350,8 +354,10 @@
     if cy>0:raw=[(-L*.53,-H*.29),(-L*.36,H*.45),(L*.41,H*.42),(L*.52,H*.23),(L*.45,-H*.31),(L*.21,-H*.46),(-L*.35,-H*.43)]
     p2=catmull([(y,0,z) for y,z in raw+[raw[0],raw[1]]],4)[:-4]
     p2=p2[:-1] if (p2[0]-p2[-1]).length<.01 else p2
-    cx=shape(cy)[0]*1.05-.5
-    ringspec=[(.96,0), (1.08,2.3),(1.04,5.4),(.87,6.5),(.79,4.8),(.79,1.8)]
+    # Seat the back into the shell, but keep the entire opening in front of all
+    # overlapping armour, including the broad shoulder at the forward end.
+    cx=max(shape(cy-L*.58+i*L*1.16/32)[0] for i in range(33))*1.05+3.3
+    ringspec=[(.96,-8.0), (1.08,1.2),(1.04,5.4),(.87,6.5),(.79,4.8),(.79,1.8)]
     vs=[];n=len(p2)
     for scale,depth in ringspec:
         for p in p2:vs.append((sign*(cx+depth),cy+p.x*scale,cz+p.z*scale))
@@ -412,8 +418,8 @@
     for j in range(6):
         u=j/5;r=26.1-7*u;a=t+.085*u;pts.append((r*math.cos(a),-201+11*u,r*.89*math.sin(a)))
     tube(h,pts,[.90,1.05,.98,.81,.54,.23],2,9)
-    lit=[Vector(p)+Vector((-.16*math.cos(t),-.72,-.16*math.sin(t))) for p in pts]
-    tube(h,lit,[.29,.46,.44,.38,.24,.08],4,7)
+    lit=[Vector(p)+Vector((-.16*math.cos(t),-.98,-.16*math.sin(t))) for p in pts]
+    tube(h,lit,[.46,.65,.61,.47,.27,.08],4,8)
     # Dark rib continuing down the gullet from each luminous tooth.
     pts2=[]
     for j in range(6):
@@ -454,7 +460,7 @@
         theta=row*.43;base=surface(yy+row*3,theta,2.0);ht=(23 if row==0 else 18)*math.sin((i+1)/9*math.pi)**.5*(1+.10*math.sin(i*2.7))
         pts=catmull([base,base+Vector((row*2,3,ht*.4)),base+Vector((row*5,11,ht*.78)),base+Vector((row*7,21,ht))],5)
         rr=[3.6*(1-j/(len(pts)-1))**1.05+.035 for j in range(len(pts))]
-        tube(h,pts,rr,2,10,.66);ellipsoid(h,base,(5.3,7.8,2.8),0,18,8)
+        tube(h,pts,rr,2,12,ellipse=.66);ellipsoid(h,base,(5.3,7.8,2.8),0,18,8)
         ring(h,base+Vector((0,0,1.8)),(0,0,1),4.1,.6,2,24,7,1.25)
         tube(h,[base+Vector((row*2,0,1)),base+Vector((row*3,4,ht*.36)),base+Vector((row*5,11,ht*.7))],[.35,.28,.05],1,6)
 
@@ -462,7 +468,7 @@
 for s in [-1,1]:
     for zz in [-14,15]:
         pts=catmull([(s*28,132,zz),(s*31,163,zz*1.1),(s*26,189,zz*1.08),(s*21,211,zz*.9)],6)
-        rr=[6*(1-i/(len(pts)-1))**.8+.07 for i in range(len(pts))];tube(h,pts,rr,0,14,.58)
+        rr=[6*(1-i/(len(pts)-1))**.8+.07 for i in range(len(pts))];tube(h,pts,rr,0,14,ellipse=.58)
         tube(h,[p+Vector((0,0,2.2 if zz>0 else -2.2)) for p in pts[:-3]],[.30]*len(pts[:-3]),1,6)
 
 # Three main engines, bevelled ring exits, recessed glowing interiors.
@@ -507,6 +513,10 @@
         if side<0:dy=[v+5*math.sin(k*1.4+j) for k,v in enumerate(dy)]
         curl=[(6,dy[0],-12),(18-j,dy[1],-26),(30-j*4,dy[2],-39-j*2),(26-j*4,dy[3],-50-j*2),(16+j,dy[4],-54-j+(3 if side<0 else 0))]
         if j==2:curl=[(5,dy[0],-12),(13,dy[1],-23),(28,dy[2],-34),(28,dy[3],-48),(14,dy[4],-59)]
+        if side<0:
+            # A second, lower fan gives six distinct hanging silhouettes, with
+            # different tip heights rather than three mirrored hidden limbs.
+            curl=[(x*1.13,dy-12,dz*(1.24+.055*j)) for x,dy,dz in curl]
         points=[root]+[root+Vector((side*x,dy,dz)) for x,dy,dz in curl]
         pts=catmull(points,7);N=len(pts)
         rr=[6.5*(1-i/(N-1))+.95 for i in range(N)]
@@ -515,7 +525,7 @@
         for k in range(0,N-2,2):
             a,b=pts[k],pts[min(k+2,N-1)];mid=(a+b)/2;direction=(b-a).normalized();length=(b-a).length
             r=rr[k]+.4
-            tube(g,[a,a+direction*.5,b-direction*.55,b],[r*.91,r*1.08,r*1.02,r*.85],0,14,.88)
+            tube(g,[a,a+direction*.5,b-direction*.55,b],[r*.91,r*1.08,r*1.02,r*.85],0,14,ellipse=.88)
             ring(g,a+direction*.6,direction,r*1.02,.22,1,14,6,.88)
             # One narrow spinal rail down every link; no free-floating greebles.
             lateral=Vector((side,0,0));tube(g,[a+lateral*r*.89,mid+lateral*(r+ .15),b+lateral*r*.79],[.3,.34,.22],2,6)
@@ -585,7 +595,7 @@
 for ob in objs:
     select(ob);mod=ob.modifiers.new('Triangulated runtime surface','TRIANGULATE');bpy.ops.object.modifier_apply(modifier=mod.name)
     if ob==hull:
-        dec=ob.modifiers.new('Runtime surface reduction','DECIMATE');dec.ratio=min(.90,(182000-sum(len(a.data.polygons)*2 for a in objs[1:]))/len(ob.data.polygons));dec.use_collapse_triangulate=True;bpy.ops.object.modifier_apply(modifier=dec.name)
+        dec=ob.modifiers.new('Runtime surface reduction','DECIMATE');dec.ratio=min(.90,(178000-sum(len(a.data.polygons)*2 for a in objs[1:]))/len(ob.data.polygons));dec.use_collapse_triangulate=True;bpy.ops.object.modifier_apply(modifier=dec.name)
     if ob==hull:
         weighted=ob.modifiers.new('Area weighted armour shading','WEIGHTED_NORMAL');weighted.keep_sharp=True;weighted.mode='FACE_AREA_WITH_ANGLE';weighted.weight=35
         bpy.ops.object.modifier_apply(modifier=weighted.name)
@@ -601,7 +611,7 @@
     o=bpy.data.objects.new(name,None);sc.collection.objects.link(o);o.location=worldp(p);o.parent=parent;o.empty_display_size=2;return o
 for i,p in enumerate(THRUSTERS):empty('Thruster_'+str(i+1),p)
 empty('Camera_Chase',(0,315,110))
-empty('Light_Nav_L',(63,5,1))['color']=[1.0,0.0,0.0];empty('Light_Nav_R',(-63,5,1))['color']=[0.0,1.0,0.0];empty('Light_Beacon',(0,34,50))['color']=[1.0,.12,.0]
+empty('Light_Nav_L',(63,5,1))['color']=[1.0,0.0,0.0];empty('Light_Nav_R',(-63,5,1))['color']=[0.0,1.0,0.0];empty('Light_Beacon',surface(34,0,5))['color']=[1.0,.12,.0]
 asset=[o for o in sc.objects]
 bpy.context.view_layer.update()
 tri=sum(len(o.data.polygons) for o in objs)

 succeeded in 23838ms:
hook: PreToolUse
hook: PreToolUse Completed
hook: PreToolUse
hook: PreToolUse Completed
hook: PreToolUse
hook: PreToolUse Completed
diff --git a/jobs/alien-harvester-v1/build_alien-harvester.py b/jobs/alien-harvester-v1/build_alien-harvester.py
index 2fd1298f86ec659e97961d76bdbc9f692a926df6..6e2b4e3d937bd42542695df9d07d2d1f4779682a
--- a/jobs/alien-harvester-v1/build_alien-harvester.py
+++ b/jobs/alien-harvester-v1/build_alien-harvester.py
@@ -161,7 +161,7 @@
 # Identical metal stock normal bakes share one image in the delivered GLB.
 MATS[3].node_tree.nodes['Normal'].image=MATS[1].node_tree.nodes['Normal'].image
 
-for name,col,strength in [('Lamps',(1,.15,.008,1),2.3),('Engines',(1,.22,.018,1),2.2)]:
+for name,col,strength in [('Lamps',(1,.18,.004,1),1.8),('Engines',(1,.24,.009,1),1.8)]:
     m=bpy.data.materials.new(name);m.use_nodes=True;p=m.node_tree.nodes.get('Principled BSDF');p.inputs['Base Color'].default_value=col;p.inputs['Roughness'].default_value=.34;p.inputs['Metallic'].default_value=.3;p.inputs['Emission Color'].default_value=col;p.inputs['Emission Strength'].default_value=strength;MATS.append(m)
 
 class Geo:
@@ -271,7 +271,11 @@
     for i in range(len(profile)-1):
         a,b=profile[i:i+2]
         if a[0]<=y<=b[0]:
-            t=(y-a[0])/(b[0]-a[0]);t=t*t*(3-2*t);return tuple(a[k]*(1-t)+b[k]*t for k in range(1,4))
+            # C1-continuous loft: no flattened shoulder or pinched ring at each
+            # control station, and the overlaid armour uses the identical skin.
+            prev=profile[max(0,i-1)];nxt=profile[min(len(profile)-1,i+2)]
+            span=b[0]-a[0];t=(y-a[0])/span
+            return tuple((2*t**3-3*t*t+1)*a[k]+(t**3-2*t*t+t)*span*(b[k]-prev[k])/(b[0]-prev[0])+(-2*t**3+3*t*t)*b[k]+(t**3-t*t)*span*(nxt[k]-a[k])/(nxt[0]-a[0]) for k in range(1,4))
     return profile[0][1:] if y<profile[0][0] else profile[-1][1:]
 def surface(y,t,offset=0):
     w,z,c=shape(y);return Vector(((w*1.05+offset)*math.sin(t),y,c+(z*1.30+offset)*math.cos(t)))
@@ -350,8 +354,10 @@
     if cy>0:raw=[(-L*.53,-H*.29),(-L*.36,H*.45),(L*.41,H*.42),(L*.52,H*.23),(L*.45,-H*.31),(L*.21,-H*.46),(-L*.35,-H*.43)]
     p2=catmull([(y,0,z) for y,z in raw+[raw[0],raw[1]]],4)[:-4]
     p2=p2[:-1] if (p2[0]-p2[-1]).length<.01 else p2
-    cx=shape(cy)[0]*1.05-.5
-    ringspec=[(.96,0), (1.08,2.3),(1.04,5.4),(.87,6.5),(.79,4.8),(.79,1.8)]
+    # Seat the back into the shell, but keep the entire opening in front of all
+    # overlapping armour, including the broad shoulder at the forward end.
+    cx=max(shape(cy-L*.58+i*L*1.16/32)[0] for i in range(33))*1.05+3.3
+    ringspec=[(.96,-8.0), (1.08,1.2),(1.04,5.4),(.87,6.5),(.79,4.8),(.79,1.8)]
     vs=[];n=len(p2)
     for scale,depth in ringspec:
         for p in p2:vs.append((sign*(cx+depth),cy+p.x*scale,cz+p.z*scale))
@@ -412,8 +418,8 @@
     for j in range(6):
         u=j/5;r=26.1-7*u;a=t+.085*u;pts.append((r*math.cos(a),-201+11*u,r*.89*math.sin(a)))
     tube(h,pts,[.90,1.05,.98,.81,.54,.23],2,9)
-    lit=[Vector(p)+Vector((-.16*math.cos(t),-.72,-.16*math.sin(t))) for p in pts]
-    tube(h,lit,[.29,.46,.44,.38,.24,.08],4,7)
+    lit=[Vector(p)+Vector((-.16*math.cos(t),-.98,-.16*math.sin(t))) for p in pts]
+    tube(h,lit,[.46,.65,.61,.47,.27,.08],4,8)
     # Dark rib continuing down the gullet from each luminous tooth.
     pts2=[]
     for j in range(6):
@@ -454,7 +460,7 @@
         theta=row*.43;base=surface(yy+row*3,theta,2.0);ht=(23 if row==0 else 18)*math.sin((i+1)/9*math.pi)**.5*(1+.10*math.sin(i*2.7))
         pts=catmull([base,base+Vector((row*2,3,ht*.4)),base+Vector((row*5,11,ht*.78)),base+Vector((row*7,21,ht))],5)
         rr=[3.6*(1-j/(len(pts)-1))**1.05+.035 for j in range(len(pts))]
-        tube(h,pts,rr,2,10,.66);ellipsoid(h,base,(5.3,7.8,2.8),0,18,8)
+        tube(h,pts,rr,2,12,ellipse=.66);ellipsoid(h,base,(5.3,7.8,2.8),0,18,8)
         ring(h,base+Vector((0,0,1.8)),(0,0,1),4.1,.6,2,24,7,1.25)
         tube(h,[base+Vector((row*2,0,1)),base+Vector((row*3,4,ht*.36)),base+Vector((row*5,11,ht*.7))],[.35,.28,.05],1,6)
 
@@ -462,7 +468,7 @@
 for s in [-1,1]:
     for zz in [-14,15]:
         pts=catmull([(s*28,132,zz),(s*31,163,zz*1.1),(s*26,189,zz*1.08),(s*21,211,zz*.9)],6)
-        rr=[6*(1-i/(len(pts)-1))**.8+.07 for i in range(len(pts))];tube(h,pts,rr,0,14,.58)
+        rr=[6*(1-i/(len(pts)-1))**.8+.07 for i in range(len(pts))];tube(h,pts,rr,0,14,ellipse=.58)
         tube(h,[p+Vector((0,0,2.2 if zz>0 else -2.2)) for p in pts[:-3]],[.30]*len(pts[:-3]),1,6)
 
 # Three main engines, bevelled ring exits, recessed glowing interiors.
@@ -507,6 +513,10 @@
         if side<0:dy=[v+5*math.sin(k*1.4+j) for k,v in enumerate(dy)]
         curl=[(6,dy[0],-12),(18-j,dy[1],-26),(30-j*4,dy[2],-39-j*2),(26-j*4,dy[3],-50-j*2),(16+j,dy[4],-54-j+(3 if side<0 else 0))]
         if j==2:curl=[(5,dy[0],-12),(13,dy[1],-23),(28,dy[2],-34),(28,dy[3],-48),(14,dy[4],-59)]
+        if side<0:
+            # A second, lower fan gives six distinct hanging silhouettes, with
+            # different tip heights rather than three mirrored hidden limbs.
+            curl=[(x*1.13,dy-12,dz*(1.24+.055*j)) for x,dy,dz in curl]
         points=[root]+[root+Vector((side*x,dy,dz)) for x,dy,dz in curl]
         pts=catmull(points,7);N=len(pts)
         rr=[6.5*(1-i/(N-1))+.95 for i in range(N)]
@@ -515,7 +525,7 @@
         for k in range(0,N-2,2):
             a,b=pts[k],pts[min(k+2,N-1)];mid=(a+b)/2;direction=(b-a).normalized();length=(b-a).length
             r=rr[k]+.4
-            tube(g,[a,a+direction*.5,b-direction*.55,b],[r*.91,r*1.08,r*1.02,r*.85],0,14,.88)
+            tube(g,[a,a+direction*.5,b-direction*.55,b],[r*.91,r*1.08,r*1.02,r*.85],0,14,ellipse=.88)
             ring(g,a+direction*.6,direction,r*1.02,.22,1,14,6,.88)
             # One narrow spinal rail down every link; no free-floating greebles.
             lateral=Vector((side,0,0));tube(g,[a+lateral*r*.89,mid+lateral*(r+ .15),b+lateral*r*.79],[.3,.34,.22],2,6)
@@ -585,7 +595,7 @@
 for ob in objs:
     select(ob);mod=ob.modifiers.new('Triangulated runtime surface','TRIANGULATE');bpy.ops.object.modifier_apply(modifier=mod.name)
     if ob==hull:
-        dec=ob.modifiers.new('Runtime surface reduction','DECIMATE');dec.ratio=min(.90,(182000-sum(len(a.data.polygons)*2 for a in objs[1:]))/len(ob.data.polygons));dec.use_collapse_triangulate=True;bpy.ops.object.modifier_apply(modifier=dec.name)
+        dec=ob.modifiers.new('Runtime surface reduction','DECIMATE');dec.ratio=min(.90,(178000-sum(len(a.data.polygons)*2 for a in objs[1:]))/len(ob.data.polygons));dec.use_collapse_triangulate=True;bpy.ops.object.modifier_apply(modifier=dec.name)
     if ob==hull:
         weighted=ob.modifiers.new('Area weighted armour shading','WEIGHTED_NORMAL');weighted.keep_sharp=True;weighted.mode='FACE_AREA_WITH_ANGLE';weighted.weight=35
         bpy.ops.object.modifier_apply(modifier=weighted.name)
@@ -601,7 +611,7 @@
     o=bpy.data.objects.new(name,None);sc.collection.objects.link(o);o.location=worldp(p);o.parent=parent;o.empty_display_size=2;return o
 for i,p in enumerate(THRUSTERS):empty('Thruster_'+str(i+1),p)
 empty('Camera_Chase',(0,315,110))
-empty('Light_Nav_L',(63,5,1))['color']=[1.0,0.0,0.0];empty('Light_Nav_R',(-63,5,1))['color']=[0.0,1.0,0.0];empty('Light_Beacon',(0,34,50))['color']=[1.0,.12,.0]
+empty('Light_Nav_L',(63,5,1))['color']=[1.0,0.0,0.0];empty('Light_Nav_R',(-63,5,1))['color']=[0.0,1.0,0.0];empty('Light_Beacon',surface(34,0,5))['color']=[1.0,.12,.0]
 asset=[o for o in sc.objects]
 bpy.context.view_layer.update()
 tri=sum(len(o.data.polygons) for o in objs)

 succeeded in 59202ms:
hook: PreToolUse
hook: PreToolUse
hook: PreToolUse
hook: PreToolUse
hook: PreToolUse Completed
hook: PreToolUse Completed
hook: PreToolUse Completed
hook: PreToolUse Completed
exec
/bin/bash -lc "cat > /tmp/alien-harvester-check/view_probe.py <<'PY'
import bpy
from mathutils import Vector
from pathlib import Path
R=Path('/root/fal-author/alien-harvester-v1')
bpy.ops.wm.open_mainfile(filepath=str(R/'harvester-source.blend'))
s=bpy.context.scene
p=bpy.context.preferences.addons['cycles'].preferences;p.compute_device_type='OPTIX';p.get_devices()
for d in p.devices:d.use=d.type"'!='"'CPU'
s.cycles.device='GPU';s.cycles.samples=20;s.render.resolution_x=1280;s.render.resolution_y=720
l=bpy.data.lights.new('Arm reflection','AREA');l.energy=500000;l.shape='DISK';l.size=220;l.color=(.73,.82,1)
o=bpy.data.objects.new('Arm reflection',l);s.collection.objects.link(o);o.location=(220,-160,-120);o.rotation_euler=(Vector((0,20,-40))-o.location).to_track_quat('-Z','Y').to_euler()
for i,(pos,scale) in enumerate([((620,-460,180),470),((560,-650,220),450),((460,-680,170),430)]):
 c=s.camera;c.location=pos;c.rotation_euler=(Vector((0,-6,-3))-c.location).to_track_quat('-Z','Y').to_euler();c.data.ortho_scale=scale
 s.render.filepath=str(R/('view-probe-'+str(i)+'.png'));bpy.ops.render.render(write_still=True)
PY
scp /tmp/alien-harvester-check/view_probe.py gex44:/root/fal-author/alien-harvester-v1/view_probe.py" in /home/claude-agent/forge-build/forge-assets/jobs/alien-harvester-v1
 succeeded in 789ms:
hook: PreToolUse
hook: PreToolUse
hook: PreToolUse
hook: PreToolUse
hook: PreToolUse Completed
hook: PreToolUse Completed
hook: PreToolUse Completed
hook: PreToolUse Completed
exec
/bin/bash -lc "ssh gex44 '/root/blender-spike/blender-5.2.0-linux-x64/blender -b --python-exit-code 1 --python /root/fal-author/alien-harvester-v1/view_probe.py > /root/fal-author/alien-harvester-v1/view-probe.log 2>&1'" in /home/claude-agent/forge-build/forge-assets/jobs/alien-harvester-v1
hook: PreToolUse
hook: PreToolUse
hook: PreToolUse
hook: PreToolUse
hook: PreToolUse Completed
hook: PreToolUse Completed
hook: PreToolUse Completed
hook: PreToolUse Completed
exec
/bin/bash -lc 'tail -n 12 /tmp/alien-harvester-review/review-final.txt' in /home/claude-agent/forge-build/forge-assets/jobs/alien-harvester-v1
 succeeded in 0ms:
| :--- | :--- | :--- | :--- |
| **1** | **Far-side arms now collide/overlap near-side arms in profile, and the far-rear arm is shortened and fused at its root** | In [v4/side.png](file:///tmp/alien-harvester-review/v4/side.png) (`x=35%..78%, y=53%..74%`), all 6 arms were clearly separated along the hull axis into 6 distinct silhouettes. In current [side.png](file:///home/claude-agent/forge-build/forge-assets/jobs/alien-harvester-v1/side.png), the far-mid arm (`x=50%..57%, y=53%..70%`) overlaps directly behind the near-mid arm, and the far-rear arm (`x=63%..75%, y=54%..73%`) merges into the near-rear arm root and is visibly shorter/smaller in [final.png](file:///home/claude-agent/forge-build/forge-assets/jobs/alien-harvester-v1/final.png) (`x=60%..64%, y=56%..66%`) and [clay.png](file:///home/claude-agent/forge-build/forge-assets/jobs/alien-harvester-v1/clay.png) than the other five arms. | Match the far-rear arm length and diameter to the near-rear arm (within 5%), keep the lower ventral drop from `final.png` so all 6 claws clear the belly in 3/4 view, and restore longitudinal/pose offset so all 6 arm silhouettes separate with zero shaft or claw overlap in [side.png](file:///home/claude-agent/forge-build/forge-assets/jobs/alien-harvester-v1/side.png). |
| **2** | **Stray square indicator block with glowing orange dot left on the forward cheek seam** | In [close.png](file:///home/claude-agent/forge-build/forge-assets/jobs/alien-harvester-v1/close.png) (`x=63%..66%, y=35%..39%`), [final.png](file:///home/claude-agent/forge-build/forge-assets/jobs/alien-harvester-v1/final.png) (`x=35%..37%, y=53%..55%`), and [clay.png](file:///home/claude-agent/forge-build/forge-assets/jobs/alien-harvester-v1/clay.png) (`x=35%..37%, y=53%..55%`), a small protruding rectangular pad with a bright orange emissive dot sits on the cheek panel seam. This reads like a human button/window indicator and violates the no-windows/markings alien construction brief. | Remove the square cheek pad and its orange emissive dot at `x=63%..66%, y=35%..39%` in [close.png](file:///home/claude-agent/forge-build/forge-assets/jobs/alien-harvester-v1/close.png) (and its mirrored counterpart if present) so the armor seam is uninterrupted dark metal. |
| **3** | **Maw glow sits on the outer radial blades around a dead-black throat, and side vent bars still cross at opposing angles** | In [close.png](file:///home/claude-agent/forge-build/forge-assets/jobs/alien-harvester-v1/close.png) (`x=0%..16%, y=33%..78%`) and [final.png](file:///home/claude-agent/forge-build/forge-assets/jobs/alien-harvester-v1/final.png) (`x=12%..20%, y=52%..66%`), the outer maw blades are flat self-lit peach-orange while the central throat bore is pitch black, inverting [sheet.jpg](file:///home/claude-agent/forge-build/forge-assets/jobs/alien-harvester-v1/sheet.jpg) (`x=54%..64%, y=69%..89%`) where dark metallic teeth frame a bright inner furnace. In [side.png](file:///home/claude-agent/forge-build/forge-assets/jobs/alien-harvester-v1/side.png) (`x=36%..47%, y=46%..50%` and `x=58%..69%, y=45%..49%`), the side vent bars still slant in two opposing directions like crossed toothpicks instead of parallel louvers. | Make all side-vent louvers parallel at a uniform angle (`55°..70°`) with zero crossing bars. Reduce outer maw blade emission so the teeth read as dark metallic/amber-rimmed fins (`value < 0.35` on outer faces) and add an emissive inner throat ring/core so the center bore (`x=0%..10%, y=45%..68%` in `close.png`) is the brightest part of the maw. |

***

0. **Blocked on you**: nothing.
1. **What you changed**: nothing (read-only visual review).
2. **How you know it works**: opened and inspected [sheet.jpg](file:///home/claude-agent/forge-build/forge-assets/jobs/alien-harvester-v1/sheet.jpg), current [final.png](file:///home/claude-agent/forge-build/forge-assets/jobs/alien-harvester-v1/final.png), [side.png](file:///home/claude-agent/forge-build/forge-assets/jobs/alien-harvester-v1/side.png), [close.png](file:///home/claude-agent/forge-build/forge-assets/jobs/alien-harvester-v1/close.png), [clay.png](file:///home/claude-agent/forge-build/forge-assets/jobs/alien-harvester-v1/clay.png), [arms-test.png](file:///home/claude-agent/forge-build/forge-assets/jobs/alien-harvester-v1/arms-test.png), [paints.png](file:///home/claude-agent/forge-build/forge-assets/jobs/alien-harvester-v1/paints.png), prior [v4/final.png](file:///tmp/alien-harvester-review/v4/final.png), [v4/side.png](file:///tmp/alien-harvester-review/v4/side.png), [v4/close.png](file:///tmp/alien-harvester-review/v4/close.png), and [review-v3.txt](file:///tmp/alien-harvester-review/review-v3.txt).
3. **What would break if you were wrong**: accepting as-is ships a visibly stunted/overlapping sixth arm in side and 3/4 views, a stray orange indicator button on the forward hull, crossed vent bars, and a hollow black maw center.
4. **What you did NOT do**: did not inspect `.blend` or `.glb` geometry files or run automated scripts.

diff --git a/jobs/alien-harvester-v1/build_alien-harvester.py b/jobs/alien-harvester-v1/build_alien-harvester.py
index 2fd1298f86ec659e97961d76bdbc9f692a926df6..6e2b4e3d937bd42542695df9d07d2d1f4779682a
--- a/jobs/alien-harvester-v1/build_alien-harvester.py
+++ b/jobs/alien-harvester-v1/build_alien-harvester.py
@@ -161,7 +161,7 @@
 # Identical metal stock normal bakes share one image in the delivered GLB.
 MATS[3].node_tree.nodes['Normal'].image=MATS[1].node_tree.nodes['Normal'].image
 
-for name,col,strength in [('Lamps',(1,.15,.008,1),2.3),('Engines',(1,.22,.018,1),2.2)]:
+for name,col,strength in [('Lamps',(1,.18,.004,1),1.8),('Engines',(1,.24,.009,1),1.8)]:
     m=bpy.data.materials.new(name);m.use_nodes=True;p=m.node_tree.nodes.get('Principled BSDF');p.inputs['Base Color'].default_value=col;p.inputs['Roughness'].default_value=.34;p.inputs['Metallic'].default_value=.3;p.inputs['Emission Color'].default_value=col;p.inputs['Emission Strength'].default_value=strength;MATS.append(m)
 
 class Geo:
@@ -271,7 +271,11 @@
     for i in range(len(profile)-1):
         a,b=profile[i:i+2]
         if a[0]<=y<=b[0]:
-            t=(y-a[0])/(b[0]-a[0]);t=t*t*(3-2*t);return tuple(a[k]*(1-t)+b[k]*t for k in range(1,4))
+            # C1-continuous loft: no flattened shoulder or pinched ring at each
+            # control station, and the overlaid armour uses the identical skin.
+            prev=profile[max(0,i-1)];nxt=profile[min(len(profile)-1,i+2)]
+            span=b[0]-a[0];t=(y-a[0])/span
+            return tuple((2*t**3-3*t*t+1)*a[k]+(t**3-2*t*t+t)*span*(b[k]-prev[k])/(b[0]-prev[0])+(-2*t**3+3*t*t)*b[k]+(t**3-t*t)*span*(nxt[k]-a[k])/(nxt[0]-a[0]) for k in range(1,4))
     return profile[0][1:] if y<profile[0][0] else profile[-1][1:]
 def surface(y,t,offset=0):
     w,z,c=shape(y);return Vector(((w*1.05+offset)*math.sin(t),y,c+(z*1.30+offset)*math.cos(t)))
@@ -350,8 +354,10 @@
     if cy>0:raw=[(-L*.53,-H*.29),(-L*.36,H*.45),(L*.41,H*.42),(L*.52,H*.23),(L*.45,-H*.31),(L*.21,-H*.46),(-L*.35,-H*.43)]
     p2=catmull([(y,0,z) for y,z in raw+[raw[0],raw[1]]],4)[:-4]
     p2=p2[:-1] if (p2[0]-p2[-1]).length<.01 else p2
-    cx=shape(cy)[0]*1.05-.5
-    ringspec=[(.96,0), (1.08,2.3),(1.04,5.4),(.87,6.5),(.79,4.8),(.79,1.8)]
+    # Seat the back into the shell, but keep the entire opening in front of all
+    # overlapping armour, including the broad shoulder at the forward end.
+    cx=max(shape(cy-L*.58+i*L*1.16/32)[0] for i in range(33))*1.05+3.3
+    ringspec=[(.96,-8.0), (1.08,1.2),(1.04,5.4),(.87,6.5),(.79,4.8),(.79,1.8)]
     vs=[];n=len(p2)
     for scale,depth in ringspec:
         for p in p2:vs.append((sign*(cx+depth),cy+p.x*scale,cz+p.z*scale))
@@ -412,8 +418,8 @@
     for j in range(6):
         u=j/5;r=26.1-7*u;a=t+.085*u;pts.append((r*math.cos(a),-201+11*u,r*.89*math.sin(a)))
     tube(h,pts,[.90,1.05,.98,.81,.54,.23],2,9)
-    lit=[Vector(p)+Vector((-.16*math.cos(t),-.72,-.16*math.sin(t))) for p in pts]
-    tube(h,lit,[.29,.46,.44,.38,.24,.08],4,7)
+    lit=[Vector(p)+Vector((-.16*math.cos(t),-.98,-.16*math.sin(t))) for p in pts]
+    tube(h,lit,[.46,.65,.61,.47,.27,.08],4,8)
     # Dark rib continuing down the gullet from each luminous tooth.
     pts2=[]
     for j in range(6):
@@ -454,7 +460,7 @@
         theta=row*.43;base=surface(yy+row*3,theta,2.0);ht=(23 if row==0 else 18)*math.sin((i+1)/9*math.pi)**.5*(1+.10*math.sin(i*2.7))
         pts=catmull([base,base+Vector((row*2,3,ht*.4)),base+Vector((row*5,11,ht*.78)),base+Vector((row*7,21,ht))],5)
         rr=[3.6*(1-j/(len(pts)-1))**1.05+.035 for j in range(len(pts))]
-        tube(h,pts,rr,2,10,.66);ellipsoid(h,base,(5.3,7.8,2.8),0,18,8)
+        tube(h,pts,rr,2,12,ellipse=.66);ellipsoid(h,base,(5.3,7.8,2.8),0,18,8)
         ring(h,base+Vector((0,0,1.8)),(0,0,1),4.1,.6,2,24,7,1.25)
         tube(h,[base+Vector((row*2,0,1)),base+Vector((row*3,4,ht*.36)),base+Vector((row*5,11,ht*.7))],[.35,.28,.05],1,6)
 
@@ -462,7 +468,7 @@
 for s in [-1,1]:
     for zz in [-14,15]:
         pts=catmull([(s*28,132,zz),(s*31,163,zz*1.1),(s*26,189,zz*1.08),(s*21,211,zz*.9)],6)
-        rr=[6*(1-i/(len(pts)-1))**.8+.07 for i in range(len(pts))];tube(h,pts,rr,0,14,.58)
+        rr=[6*(1-i/(len(pts)-1))**.8+.07 for i in range(len(pts))];tube(h,pts,rr,0,14,ellipse=.58)
         tube(h,[p+Vector((0,0,2.2 if zz>0 else -2.2)) for p in pts[:-3]],[.30]*len(pts[:-3]),1,6)
 
 # Three main engines, bevelled ring exits, recessed glowing interiors.
@@ -507,6 +513,10 @@
         if side<0:dy=[v+5*math.sin(k*1.4+j) for k,v in enumerate(dy)]
         curl=[(6,dy[0],-12),(18-j,dy[1],-26),(30-j*4,dy[2],-39-j*2),(26-j*4,dy[3],-50-j*2),(16+j,dy[4],-54-j+(3 if side<0 else 0))]
         if j==2:curl=[(5,dy[0],-12),(13,dy[1],-23),(28,dy[2],-34),(28,dy[3],-48),(14,dy[4],-59)]
+        if side<0:
+            # A second, lower fan gives six distinct hanging silhouettes, with
+            # different tip heights rather than three mirrored hidden limbs.
+            curl=[(x*1.13,dy-12,dz*(1.24+.055*j)) for x,dy,dz in curl]
         points=[root]+[root+Vector((side*x,dy,dz)) for x,dy,dz in curl]
         pts=catmull(points,7);N=len(pts)
         rr=[6.5*(1-i/(N-1))+.95 for i in range(N)]
@@ -515,7 +525,7 @@
         for k in range(0,N-2,2):
             a,b=pts[k],pts[min(k+2,N-1)];mid=(a+b)/2;direction=(b-a).normalized();length=(b-a).length
             r=rr[k]+.4
-            tube(g,[a,a+direction*.5,b-direction*.55,b],[r*.91,r*1.08,r*1.02,r*.85],0,14,.88)
+            tube(g,[a,a+direction*.5,b-direction*.55,b],[r*.91,r*1.08,r*1.02,r*.85],0,14,ellipse=.88)
             ring(g,a+direction*.6,direction,r*1.02,.22,1,14,6,.88)
             # One narrow spinal rail down every link; no free-floating greebles.
             lateral=Vector((side,0,0));tube(g,[a+lateral*r*.89,mid+lateral*(r+ .15),b+lateral*r*.79],[.3,.34,.22],2,6)
@@ -585,7 +595,7 @@
 for ob in objs:
     select(ob);mod=ob.modifiers.new('Triangulated runtime surface','TRIANGULATE');bpy.ops.object.modifier_apply(modifier=mod.name)
     if ob==hull:
-        dec=ob.modifiers.new('Runtime surface reduction','DECIMATE');dec.ratio=min(.90,(182000-sum(len(a.data.polygons)*2 for a in objs[1:]))/len(ob.data.polygons));dec.use_collapse_triangulate=True;bpy.ops.object.modifier_apply(modifier=dec.name)
+        dec=ob.modifiers.new('Runtime surface reduction','DECIMATE');dec.ratio=min(.90,(178000-sum(len(a.data.polygons)*2 for a in objs[1:]))/len(ob.data.polygons));dec.use_collapse_triangulate=True;bpy.ops.object.modifier_apply(modifier=dec.name)
     if ob==hull:
         weighted=ob.modifiers.new('Area weighted armour shading','WEIGHTED_NORMAL');weighted.keep_sharp=True;weighted.mode='FACE_AREA_WITH_ANGLE';weighted.weight=35
         bpy.ops.object.modifier_apply(modifier=weighted.name)
@@ -601,7 +611,7 @@
     o=bpy.data.objects.new(name,None);sc.collection.objects.link(o);o.location=worldp(p);o.parent=parent;o.empty_display_size=2;return o
 for i,p in enumerate(THRUSTERS):empty('Thruster_'+str(i+1),p)
 empty('Camera_Chase',(0,315,110))
-empty('Light_Nav_L',(63,5,1))['color']=[1.0,0.0,0.0];empty('Light_Nav_R',(-63,5,1))['color']=[0.0,1.0,0.0];empty('Light_Beacon',(0,34,50))['color']=[1.0,.12,.0]
+empty('Light_Nav_L',(63,5,1))['color']=[1.0,0.0,0.0];empty('Light_Nav_R',(-63,5,1))['color']=[0.0,1.0,0.0];empty('Light_Beacon',surface(34,0,5))['color']=[1.0,.12,.0]
 asset=[o for o in sc.objects]
 bpy.context.view_layer.update()
 tri=sum(len(o.data.polygons) for o in objs)

codex
The rear inspection caught a genuine construction issue: the hull partly obscures the engine exits. I’m extending the nozzles beyond it and separating the far-side arm poses. The GLB also loads correctly in the browser renderer, including its paint colours and arm pivots.
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exec
/bin/bash -lc 'head -n 19 /tmp/alien-harvester-review/review-final.txt
ssh gex44 tail -n 5 /root/fal-author/alien-harvester-v1/view-probe.log' in /home/claude-agent/forge-build/forge-assets/jobs/alien-harvester-v1
 succeeded in 606ms:
**Verdict: REVISE**

### Progress vs. Prior (v4 & v3) and Reference Comparison
* **Targeted fixes that worked:**
  * **Rear side-vent intersection fixed:** In [v4/final.png](file:///tmp/alien-harvester-review/v4/final.png) (`x=66%..70%, y=46%..49%`) and [v4/side.png](file:///tmp/alien-harvester-review/v4/side.png) (`x=60%..64%, y=44%..47%`), the vertical hull rib strap cut straight through the front corner of the rear side-vent bezel, creating a black X-tangle. In current [final.png](file:///home/claude-agent/forge-build/forge-assets/jobs/alien-harvester-v1/final.png) (`x=65%..73%, y=45%..51%`) and [side.png](file:///home/claude-agent/forge-build/forge-assets/jobs/alien-harvester-v1/side.png) (`x=57%..69%, y=44%..49%`), the vent bezel sits cleanly over the hull with zero mesh collision.
  * **Smoothed loft derivatives:** In [v4/close.png](file:///tmp/alien-harvester-review/v4/close.png) (`x=5%..25%, y=10%..28%`), the upper nose cowl had a visible longitudinal crease/pinch. In current [close.png](file:///home/claude-agent/forge-build/forge-assets/jobs/alien-harvester-v1/close.png) (`x=5%..30%, y=10%..28%`), the snout curvature and specular falloff are completely smooth.
  * **Mid-body arch & dorsal spine collars (from v3):** The dorsal profile in [side.png](file:///home/claude-agent/forge-build/forge-assets/jobs/alien-harvester-v1/side.png) (`x=30%..75%, y=28%..42%`) now swells toward the mid-body relative to the nose (`x=5%..20%, y=37%..55%`), and each spine in [clay.png](file:///home/claude-agent/forge-build/forge-assets/jobs/alien-harvester-v1/clay.png) (`x=43%..79%, y=28%..39%`) sits in a raised circular collar socket.
  * **Far-side arms visibility:** In [final.png](file:///home/claude-agent/forge-build/forge-assets/jobs/alien-harvester-v1/final.png), all 6 harvesting arms are visible, with the far-front claw (`x=34%..38%, y=64%..69%`) and far-mid claw (`x=43%..46%, y=61%..66%`) dropping lower into view than in [v4/final.png](file:///tmp/alien-harvester-review/v4/final.png). However, shifting the far arms changed their X-positions in [side.png](file:///home/claude-agent/forge-build/forge-assets/jobs/alien-harvester-v1/side.png) so they now overlap the near arms instead of separating cleanly as they did in [v4/side.png](file:///tmp/alien-harvester-review/v4/side.png).
* **Still weaker than [sheet.jpg](file:///home/claude-agent/forge-build/forge-assets/jobs/alien-harvester-v1/sheet.jpg):** The reference integrates its side vents and thruster shrouds into flared, muscular lateral cheek/sponson fairings (`x=37%..82%, y=18%..38%` in [sheet.jpg](file:///home/claude-agent/forge-build/forge-assets/jobs/alien-harvester-v1/sheet.jpg)), has a deeply recessed glowing inner throat behind heavy outer maw jaws (`x=9%..17%, y=17%..33%`), and uses thick, heavy-industrial harvesting arms. The current model has cleaner, smoother broad hull plates with surface-mounted vent bezels and thinner arms.

### Material Findings (Max 3)

| # | Finding | Evidence & Coordinates | Measurable Acceptance Criteria |
| :--- | :--- | :--- | :--- |
| **1** | **Far-side arms now collide/overlap near-side arms in profile, and the far-rear arm is shortened and fused at its root** | In [v4/side.png](file:///tmp/alien-harvester-review/v4/side.png) (`x=35%..78%, y=53%..74%`), all 6 arms were clearly separated along the hull axis into 6 distinct silhouettes. In current [side.png](file:///home/claude-agent/forge-build/forge-assets/jobs/alien-harvester-v1/side.png), the far-mid arm (`x=50%..57%, y=53%..70%`) overlaps directly behind the near-mid arm, and the far-rear arm (`x=63%..75%, y=54%..73%`) merges into the near-rear arm root and is visibly shorter/smaller in [final.png](file:///home/claude-agent/forge-build/forge-assets/jobs/alien-harvester-v1/final.png) (`x=60%..64%, y=56%..66%`) and [clay.png](file:///home/claude-agent/forge-build/forge-assets/jobs/alien-harvester-v1/clay.png) than the other five arms. | Match the far-rear arm length and diameter to the near-rear arm (within 5%), keep the lower ventral drop from `final.png` so all 6 claws clear the belly in 3/4 view, and restore longitudinal/pose offset so all 6 arm silhouettes separate with zero shaft or claw overlap in [side.png](file:///home/claude-agent/forge-build/forge-assets/jobs/alien-harvester-v1/side.png). |
| **2** | **Stray square indicator block with glowing orange dot left on the forward cheek seam** | In [close.png](file:///home/claude-agent/forge-build/forge-assets/jobs/alien-harvester-v1/close.png) (`x=63%..66%, y=35%..39%`), [final.png](file:///home/claude-agent/forge-build/forge-assets/jobs/alien-harvester-v1/final.png) (`x=35%..37%, y=53%..55%`), and [clay.png](file:///home/claude-agent/forge-build/forge-assets/jobs/alien-harvester-v1/clay.png) (`x=35%..37%, y=53%..55%`), a small protruding rectangular pad with a bright orange emissive dot sits on the cheek panel seam. This reads like a human button/window indicator and violates the no-windows/markings alien construction brief. | Remove the square cheek pad and its orange emissive dot at `x=63%..66%, y=35%..39%` in [close.png](file:///home/claude-agent/forge-build/forge-assets/jobs/alien-harvester-v1/close.png) (and its mirrored counterpart if present) so the armor seam is uninterrupted dark metal. |
| **3** | **Maw glow sits on the outer radial blades around a dead-black throat, and side vent bars still cross at opposing angles** | In [close.png](file:///home/claude-agent/forge-build/forge-assets/jobs/alien-harvester-v1/close.png) (`x=0%..16%, y=33%..78%`) and [final.png](file:///home/claude-agent/forge-build/forge-assets/jobs/alien-harvester-v1/final.png) (`x=12%..20%, y=52%..66%`), the outer maw blades are flat self-lit peach-orange while the central throat bore is pitch black, inverting [sheet.jpg](file:///home/claude-agent/forge-build/forge-assets/jobs/alien-harvester-v1/sheet.jpg) (`x=54%..64%, y=69%..89%`) where dark metallic teeth frame a bright inner furnace. In [side.png](file:///home/claude-agent/forge-build/forge-assets/jobs/alien-harvester-v1/side.png) (`x=36%..47%, y=46%..50%` and `x=58%..69%, y=45%..49%`), the side vent bars still slant in two opposing directions like crossed toothpicks instead of parallel louvers. | Make all side-vent louvers parallel at a uniform angle (`55°..70°`) with zero crossing bars. Reduce outer maw blade emission so the teeth read as dark metallic/amber-rimmed fins (`value < 0.35` on outer faces) and add an emissive inner throat ring/core so the center bore (`x=0%..10%, y=45%..68%` in `close.png`) is the brightest part of the maw. |

***
INFO gpu_gate: gpu slot acquired by blender (pid 3991196, 6000 MiB, batch)
00:01.036  blend            | Read blend: "/root/fal-author/alien-harvester-v1/harvester-source.blend"
00:01.149  cycles           | WARNING HIPEW initialization failed: Error opening HIP dynamic library
00:11.566  render           | Saved: '/root/fal-author/alien-harvester-v1/view-probe-0.png'
00:23.000  render           | Saved: '/root/fal-author/alien-harvester-v1/view-probe-1.png'

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exec
/bin/bash -lc 'mkdir -p /tmp/alien-harvester-review/v5
cp build_alien-harvester.py /tmp/alien-harvester-check/build-v5.py
cp final.png side.png close.png clay.png rear.png arms-test.png paints.png /tmp/alien-harvester-review/v5/' in /home/claude-agent/forge-build/forge-assets/jobs/alien-harvester-v1
 succeeded in 0ms:
diff --git a/jobs/alien-harvester-v1/build_alien-harvester.py b/jobs/alien-harvester-v1/build_alien-harvester.py
index 2fd1298f86ec659e97961d76bdbc9f692a926df6..6e2b4e3d937bd42542695df9d07d2d1f4779682a
--- a/jobs/alien-harvester-v1/build_alien-harvester.py
+++ b/jobs/alien-harvester-v1/build_alien-harvester.py
@@ -161,7 +161,7 @@
 # Identical metal stock normal bakes share one image in the delivered GLB.
 MATS[3].node_tree.nodes['Normal'].image=MATS[1].node_tree.nodes['Normal'].image
 
-for name,col,strength in [('Lamps',(1,.15,.008,1),2.3),('Engines',(1,.22,.018,1),2.2)]:
+for name,col,strength in [('Lamps',(1,.18,.004,1),1.8),('Engines',(1,.24,.009,1),1.8)]:
     m=bpy.data.materials.new(name);m.use_nodes=True;p=m.node_tree.nodes.get('Principled BSDF');p.inputs['Base Color'].default_value=col;p.inputs['Roughness'].default_value=.34;p.inputs['Metallic'].default_value=.3;p.inputs['Emission Color'].default_value=col;p.inputs['Emission Strength'].default_value=strength;MATS.append(m)
 
 class Geo:
@@ -271,7 +271,11 @@
     for i in range(len(profile)-1):
         a,b=profile[i:i+2]
         if a[0]<=y<=b[0]:
-            t=(y-a[0])/(b[0]-a[0]);t=t*t*(3-2*t);return tuple(a[k]*(1-t)+b[k]*t for k in range(1,4))
+            # C1-continuous loft: no flattened shoulder or pinched ring at each
+            # control station, and the overlaid armour uses the identical skin.
+            prev=profile[max(0,i-1)];nxt=profile[min(len(profile)-1,i+2)]
+            span=b[0]-a[0];t=(y-a[0])/span
+            return tuple((2*t**3-3*t*t+1)*a[k]+(t**3-2*t*t+t)*span*(b[k]-prev[k])/(b[0]-prev[0])+(-2*t**3+3*t*t)*b[k]+(t**3-t*t)*span*(nxt[k]-a[k])/(nxt[0]-a[0]) for k in range(1,4))
     return profile[0][1:] if y<profile[0][0] else profile[-1][1:]
 def surface(y,t,offset=0):
     w,z,c=shape(y);return Vector(((w*1.05+offset)*math.sin(t),y,c+(z*1.30+offset)*math.cos(t)))
@@ -350,8 +354,10 @@
     if cy>0:raw=[(-L*.53,-H*.29),(-L*.36,H*.45),(L*.41,H*.42),(L*.52,H*.23),(L*.45,-H*.31),(L*.21,-H*.46),(-L*.35,-H*.43)]
     p2=catmull([(y,0,z) for y,z in raw+[raw[0],raw[1]]],4)[:-4]
     p2=p2[:-1] if (p2[0]-p2[-1]).length<.01 else p2
-    cx=shape(cy)[0]*1.05-.5
-    ringspec=[(.96,0), (1.08,2.3),(1.04,5.4),(.87,6.5),(.79,4.8),(.79,1.8)]
+    # Seat the back into the shell, but keep the entire opening in front of all
+    # overlapping armour, including the broad shoulder at the forward end.
+    cx=max(shape(cy-L*.58+i*L*1.16/32)[0] for i in range(33))*1.05+3.3
+    ringspec=[(.96,-8.0), (1.08,1.2),(1.04,5.4),(.87,6.5),(.79,4.8),(.79,1.8)]
     vs=[];n=len(p2)
     for scale,depth in ringspec:
         for p in p2:vs.append((sign*(cx+depth),cy+p.x*scale,cz+p.z*scale))
@@ -412,8 +418,8 @@
     for j in range(6):
         u=j/5;r=26.1-7*u;a=t+.085*u;pts.append((r*math.cos(a),-201+11*u,r*.89*math.sin(a)))
     tube(h,pts,[.90,1.05,.98,.81,.54,.23],2,9)
-    lit=[Vector(p)+Vector((-.16*math.cos(t),-.72,-.16*math.sin(t))) for p in pts]
-    tube(h,lit,[.29,.46,.44,.38,.24,.08],4,7)
+    lit=[Vector(p)+Vector((-.16*math.cos(t),-.98,-.16*math.sin(t))) for p in pts]
+    tube(h,lit,[.46,.65,.61,.47,.27,.08],4,8)
     # Dark rib continuing down the gullet from each luminous tooth.
     pts2=[]
     for j in range(6):
@@ -454,7 +460,7 @@
         theta=row*.43;base=surface(yy+row*3,theta,2.0);ht=(23 if row==0 else 18)*math.sin((i+1)/9*math.pi)**.5*(1+.10*math.sin(i*2.7))
         pts=catmull([base,base+Vector((row*2,3,ht*.4)),base+Vector((row*5,11,ht*.78)),base+Vector((row*7,21,ht))],5)
         rr=[3.6*(1-j/(len(pts)-1))**1.05+.035 for j in range(len(pts))]
-        tube(h,pts,rr,2,10,.66);ellipsoid(h,base,(5.3,7.8,2.8),0,18,8)
+        tube(h,pts,rr,2,12,ellipse=.66);ellipsoid(h,base,(5.3,7.8,2.8),0,18,8)
         ring(h,base+Vector((0,0,1.8)),(0,0,1),4.1,.6,2,24,7,1.25)
         tube(h,[base+Vector((row*2,0,1)),base+Vector((row*3,4,ht*.36)),base+Vector((row*5,11,ht*.7))],[.35,.28,.05],1,6)
 
@@ -462,7 +468,7 @@
 for s in [-1,1]:
     for zz in [-14,15]:
         pts=catmull([(s*28,132,zz),(s*31,163,zz*1.1),(s*26,189,zz*1.08),(s*21,211,zz*.9)],6)
-        rr=[6*(1-i/(len(pts)-1))**.8+.07 for i in range(len(pts))];tube(h,pts,rr,0,14,.58)
+        rr=[6*(1-i/(len(pts)-1))**.8+.07 for i in range(len(pts))];tube(h,pts,rr,0,14,ellipse=.58)
         tube(h,[p+Vector((0,0,2.2 if zz>0 else -2.2)) for p in pts[:-3]],[.30]*len(pts[:-3]),1,6)
 
 # Three main engines, bevelled ring exits, recessed glowing interiors.
@@ -507,6 +513,10 @@
         if side<0:dy=[v+5*math.sin(k*1.4+j) for k,v in enumerate(dy)]
         curl=[(6,dy[0],-12),(18-j,dy[1],-26),(30-j*4,dy[2],-39-j*2),(26-j*4,dy[3],-50-j*2),(16+j,dy[4],-54-j+(3 if side<0 else 0))]
         if j==2:curl=[(5,dy[0],-12),(13,dy[1],-23),(28,dy[2],-34),(28,dy[3],-48),(14,dy[4],-59)]
+        if side<0:
+            # A second, lower fan gives six distinct hanging silhouettes, with
+            # different tip heights rather than three mirrored hidden limbs.
+            curl=[(x*1.13,dy-12,dz*(1.24+.055*j)) for x,dy,dz in curl]
         points=[root]+[root+Vector((side*x,dy,dz)) for x,dy,dz in curl]
         pts=catmull(points,7);N=len(pts)
         rr=[6.5*(1-i/(N-1))+.95 for i in range(N)]
@@ -515,7 +525,7 @@
         for k in range(0,N-2,2):
             a,b=pts[k],pts[min(k+2,N-1)];mid=(a+b)/2;direction=(b-a).normalized();length=(b-a).length
             r=rr[k]+.4
-            tube(g,[a,a+direction*.5,b-direction*.55,b],[r*.91,r*1.08,r*1.02,r*.85],0,14,.88)
+            tube(g,[a,a+direction*.5,b-direction*.55,b],[r*.91,r*1.08,r*1.02,r*.85],0,14,ellipse=.88)
             ring(g,a+direction*.6,direction,r*1.02,.22,1,14,6,.88)
             # One narrow spinal rail down every link; no free-floating greebles.
             lateral=Vector((side,0,0));tube(g,[a+lateral*r*.89,mid+lateral*(r+ .15),b+lateral*r*.79],[.3,.34,.22],2,6)
@@ -585,7 +595,7 @@
 for ob in objs:
     select(ob);mod=ob.modifiers.new('Triangulated runtime surface','TRIANGULATE');bpy.ops.object.modifier_apply(modifier=mod.name)
     if ob==hull:
-        dec=ob.modifiers.new('Runtime surface reduction','DECIMATE');dec.ratio=min(.90,(182000-sum(len(a.data.polygons)*2 for a in objs[1:]))/len(ob.data.polygons));dec.use_collapse_triangulate=True;bpy.ops.object.modifier_apply(modifier=dec.name)
+        dec=ob.modifiers.new('Runtime surface reduction','DECIMATE');dec.ratio=min(.90,(178000-sum(len(a.data.polygons)*2 for a in objs[1:]))/len(ob.data.polygons));dec.use_collapse_triangulate=True;bpy.ops.object.modifier_apply(modifier=dec.name)
     if ob==hull:
         weighted=ob.modifiers.new('Area weighted armour shading','WEIGHTED_NORMAL');weighted.keep_sharp=True;weighted.mode='FACE_AREA_WITH_ANGLE';weighted.weight=35
         bpy.ops.object.modifier_apply(modifier=weighted.name)
@@ -601,7 +611,7 @@
     o=bpy.data.objects.new(name,None);sc.collection.objects.link(o);o.location=worldp(p);o.parent=parent;o.empty_display_size=2;return o
 for i,p in enumerate(THRUSTERS):empty('Thruster_'+str(i+1),p)
 empty('Camera_Chase',(0,315,110))
-empty('Light_Nav_L',(63,5,1))['color']=[1.0,0.0,0.0];empty('Light_Nav_R',(-63,5,1))['color']=[0.0,1.0,0.0];empty('Light_Beacon',(0,34,50))['color']=[1.0,.12,.0]
+empty('Light_Nav_L',(63,5,1))['color']=[1.0,0.0,0.0];empty('Light_Nav_R',(-63,5,1))['color']=[0.0,1.0,0.0];empty('Light_Beacon',surface(34,0,5))['color']=[1.0,.12,.0]
 asset=[o for o in sc.objects]
 bpy.context.view_layer.update()
 tri=sum(len(o.data.polygons) for o in objs)

 succeeded in 31336ms:
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exec
/bin/bash -lc 'scp gex44:/root/fal-author/alien-harvester-v1/view-probe-0.png gex44:/root/fal-author/alien-harvester-v1/view-probe-1.png gex44:/root/fal-author/alien-harvester-v1/view-probe-2.png /tmp/alien-harvester-check/' in /home/claude-agent/forge-build/forge-assets/jobs/alien-harvester-v1
hook: PreToolUse
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apply patch
patch: completed
/home/claude-agent/forge-build/forge-assets/jobs/alien-harvester-v1/build_alien-harvester.py
diff --git a/jobs/alien-harvester-v1/build_alien-harvester.py b/jobs/alien-harvester-v1/build_alien-harvester.py
index 2fd1298f86ec659e97961d76bdbc9f692a926df6..250aad972d1543fc5b470fc681f46d81f4afd738
--- a/jobs/alien-harvester-v1/build_alien-harvester.py
+++ b/jobs/alien-harvester-v1/build_alien-harvester.py
@@ -161,7 +161,7 @@
 # Identical metal stock normal bakes share one image in the delivered GLB.
 MATS[3].node_tree.nodes['Normal'].image=MATS[1].node_tree.nodes['Normal'].image
 
-for name,col,strength in [('Lamps',(1,.15,.008,1),2.3),('Engines',(1,.22,.018,1),2.2)]:
+for name,col,strength in [('Lamps',(1,.18,.004,1),1.8),('Engines',(1,.24,.009,1),1.8)]:
     m=bpy.data.materials.new(name);m.use_nodes=True;p=m.node_tree.nodes.get('Principled BSDF');p.inputs['Base Color'].default_value=col;p.inputs['Roughness'].default_value=.34;p.inputs['Metallic'].default_value=.3;p.inputs['Emission Color'].default_value=col;p.inputs['Emission Strength'].default_value=strength;MATS.append(m)
 
 class Geo:
@@ -271,7 +271,11 @@
     for i in range(len(profile)-1):
         a,b=profile[i:i+2]
         if a[0]<=y<=b[0]:
-            t=(y-a[0])/(b[0]-a[0]);t=t*t*(3-2*t);return tuple(a[k]*(1-t)+b[k]*t for k in range(1,4))
+            # C1-continuous loft: no flattened shoulder or pinched ring at each
+            # control station, and the overlaid armour uses the identical skin.
+            prev=profile[max(0,i-1)];nxt=profile[min(len(profile)-1,i+2)]
+            span=b[0]-a[0];t=(y-a[0])/span
+            return tuple((2*t**3-3*t*t+1)*a[k]+(t**3-2*t*t+t)*span*(b[k]-prev[k])/(b[0]-prev[0])+(-2*t**3+3*t*t)*b[k]+(t**3-t*t)*span*(nxt[k]-a[k])/(nxt[0]-a[0]) for k in range(1,4))
     return profile[0][1:] if y<profile[0][0] else profile[-1][1:]
 def surface(y,t,offset=0):
     w,z,c=shape(y);return Vector(((w*1.05+offset)*math.sin(t),y,c+(z*1.30+offset)*math.cos(t)))
@@ -350,8 +354,10 @@
     if cy>0:raw=[(-L*.53,-H*.29),(-L*.36,H*.45),(L*.41,H*.42),(L*.52,H*.23),(L*.45,-H*.31),(L*.21,-H*.46),(-L*.35,-H*.43)]
     p2=catmull([(y,0,z) for y,z in raw+[raw[0],raw[1]]],4)[:-4]
     p2=p2[:-1] if (p2[0]-p2[-1]).length<.01 else p2
-    cx=shape(cy)[0]*1.05-.5
-    ringspec=[(.96,0), (1.08,2.3),(1.04,5.4),(.87,6.5),(.79,4.8),(.79,1.8)]
+    # Seat the back into the shell, but keep the entire opening in front of all
+    # overlapping armour, including the broad shoulder at the forward end.
+    cx=max(shape(cy-L*.58+i*L*1.16/32)[0] for i in range(33))*1.05+3.3
+    ringspec=[(.96,-8.0), (1.08,1.2),(1.04,5.4),(.87,6.5),(.79,4.8),(.79,1.8)]
     vs=[];n=len(p2)
     for scale,depth in ringspec:
         for p in p2:vs.append((sign*(cx+depth),cy+p.x*scale,cz+p.z*scale))
@@ -412,8 +418,8 @@
     for j in range(6):
         u=j/5;r=26.1-7*u;a=t+.085*u;pts.append((r*math.cos(a),-201+11*u,r*.89*math.sin(a)))
     tube(h,pts,[.90,1.05,.98,.81,.54,.23],2,9)
-    lit=[Vector(p)+Vector((-.16*math.cos(t),-.72,-.16*math.sin(t))) for p in pts]
-    tube(h,lit,[.29,.46,.44,.38,.24,.08],4,7)
+    lit=[Vector(p)+Vector((-.16*math.cos(t),-.98,-.16*math.sin(t))) for p in pts]
+    tube(h,lit,[.46,.65,.61,.47,.27,.08],4,8)
     # Dark rib continuing down the gullet from each luminous tooth.
     pts2=[]
     for j in range(6):
@@ -454,7 +460,7 @@
         theta=row*.43;base=surface(yy+row*3,theta,2.0);ht=(23 if row==0 else 18)*math.sin((i+1)/9*math.pi)**.5*(1+.10*math.sin(i*2.7))
         pts=catmull([base,base+Vector((row*2,3,ht*.4)),base+Vector((row*5,11,ht*.78)),base+Vector((row*7,21,ht))],5)
         rr=[3.6*(1-j/(len(pts)-1))**1.05+.035 for j in range(len(pts))]
-        tube(h,pts,rr,2,10,.66);ellipsoid(h,base,(5.3,7.8,2.8),0,18,8)
+        tube(h,pts,rr,2,12,ellipse=.66);ellipsoid(h,base,(5.3,7.8,2.8),0,18,8)
         ring(h,base+Vector((0,0,1.8)),(0,0,1),4.1,.6,2,24,7,1.25)
         tube(h,[base+Vector((row*2,0,1)),base+Vector((row*3,4,ht*.36)),base+Vector((row*5,11,ht*.7))],[.35,.28,.05],1,6)
 
@@ -462,13 +468,15 @@
 for s in [-1,1]:
     for zz in [-14,15]:
         pts=catmull([(s*28,132,zz),(s*31,163,zz*1.1),(s*26,189,zz*1.08),(s*21,211,zz*.9)],6)
-        rr=[6*(1-i/(len(pts)-1))**.8+.07 for i in range(len(pts))];tube(h,pts,rr,0,14,.58)
+        rr=[6*(1-i/(len(pts)-1))**.8+.07 for i in range(len(pts))];tube(h,pts,rr,0,14,ellipse=.58)
         tube(h,[p+Vector((0,0,2.2 if zz>0 else -2.2)) for p in pts[:-3]],[.30]*len(pts[:-3]),1,6)
 
 # Three main engines, bevelled ring exits, recessed glowing interiors.
 THRUSTERS=[]
-for i,(x,z,r,end) in enumerate([(-24,-7,12,196),(24,-7,12,196),(0,15,9,201)]):
-    tube(h,[(x,133,z),(x,147,z),(x,169,z),(x,end-4,z)],[r*.83,r*1.21,r*1.1,r],0,48)
+for i,(x,z,r,end) in enumerate([(-24,-7,12,214),(24,-7,12,214),(0,15,9,218)]):
+    # Nozzles extend clear of the tail skin, with an open casing and a closed
+    # emissive bowl. No hidden cap may cut across the glowing exit aperture.
+    tube(h,[(x,133,z),(x,147,z),(x,169,z),(x,end-4,z)],[r*.83,r*1.21,r*1.1,r],0,48,cap=False)
     ring(h,(x,151,z),(0,1,0),r*1.16,.9,2,48,8)
     # Exposed hot chamber between overlapping casing collars, visible from the side.
     for yy in [165,167.3,169.6,171.9]:ring(h,(x,yy,z),(0,1,0),r*1.115,.82,5,48,6)
@@ -497,7 +505,7 @@
 arms=[]
 for side in [-1,1]:
     for j,y in enumerate([-54,5,64]):
-        idx=len(arms)+1;root=Vector((side*(44-j*1.5),y+(24 if side<0 else 0),-29+j*.4));g=Geo('Arm_'+str(idx),root)
+        idx=len(arms)+1;root=Vector((side*(44-j*1.5),y+(34 if side<0 else 0),-29+j*.4));g=Geo('Arm_'+str(idx),root)
         ellipsoid(h,root+Vector((0,0,2)),(10.2,10.8,5.7),0,24,10)
         axis=Vector((side*.45,0,-.89)).normalized()
         ring(h,root+axis*1.0,axis,8.3,1.55,0,40,8)
@@ -507,6 +515,10 @@
         if side<0:dy=[v+5*math.sin(k*1.4+j) for k,v in enumerate(dy)]
         curl=[(6,dy[0],-12),(18-j,dy[1],-26),(30-j*4,dy[2],-39-j*2),(26-j*4,dy[3],-50-j*2),(16+j,dy[4],-54-j+(3 if side<0 else 0))]
         if j==2:curl=[(5,dy[0],-12),(13,dy[1],-23),(28,dy[2],-34),(28,dy[3],-48),(14,dy[4],-59)]
+        if side<0:
+            # A second, lower fan gives six distinct hanging silhouettes, with
+            # different tip heights rather than three mirrored hidden limbs.
+            curl=[(x*1.13,dy,dz*(1.24+.055*j)) for x,dy,dz in curl]
         points=[root]+[root+Vector((side*x,dy,dz)) for x,dy,dz in curl]
         pts=catmull(points,7);N=len(pts)
         rr=[6.5*(1-i/(N-1))+.95 for i in range(N)]
@@ -515,7 +527,7 @@
         for k in range(0,N-2,2):
             a,b=pts[k],pts[min(k+2,N-1)];mid=(a+b)/2;direction=(b-a).normalized();length=(b-a).length
             r=rr[k]+.4
-            tube(g,[a,a+direction*.5,b-direction*.55,b],[r*.91,r*1.08,r*1.02,r*.85],0,14,.88)
+            tube(g,[a,a+direction*.5,b-direction*.55,b],[r*.91,r*1.08,r*1.02,r*.85],0,14,ellipse=.88)
             ring(g,a+direction*.6,direction,r*1.02,.22,1,14,6,.88)
             # One narrow spinal rail down every link; no free-floating greebles.
             lateral=Vector((side,0,0));tube(g,[a+lateral*r*.89,mid+lateral*(r+ .15),b+lateral*r*.79],[.3,.34,.22],2,6)
@@ -544,7 +556,7 @@
             for bb in [-1.15,1.15]:
                 q=p+a*aa+b*bb+n*.35;tube(h,[q,q+n*.10],.12,1,7)
         # Small slit receiver: the ship has no windows or cockpit.
-        q=p+n*.4+b*(-.7);rounded_box(h,q,(.7,.14,.12),4,.045,B)
+        q=p+n*.4+b*(-.7);rounded_box(h,q,(.7,.14,.12),2,.045,B)
     for yy in [-150,-102,-63,-20,20,60,97,132]:
         theta=side*2.04;p=surface(yy,theta,1.5)
         n=Vector((math.sin(theta),0,math.cos(theta)));a=Vector((0,1,0));b=n.cross(a);B=Matrix(((a.x,b.x,n.x),(a.y,b.y,n.y),(a.z,b.z,n.z)))
@@ -585,7 +597,7 @@
 for ob in objs:
     select(ob);mod=ob.modifiers.new('Triangulated runtime surface','TRIANGULATE');bpy.ops.object.modifier_apply(modifier=mod.name)
     if ob==hull:
-        dec=ob.modifiers.new('Runtime surface reduction','DECIMATE');dec.ratio=min(.90,(182000-sum(len(a.data.polygons)*2 for a in objs[1:]))/len(ob.data.polygons));dec.use_collapse_triangulate=True;bpy.ops.object.modifier_apply(modifier=dec.name)
+        dec=ob.modifiers.new('Runtime surface reduction','DECIMATE');dec.ratio=min(.90,(178000-sum(len(a.data.polygons)*2 for a in objs[1:]))/len(ob.data.polygons));dec.use_collapse_triangulate=True;bpy.ops.object.modifier_apply(modifier=dec.name)
     if ob==hull:
         weighted=ob.modifiers.new('Area weighted armour shading','WEIGHTED_NORMAL');weighted.keep_sharp=True;weighted.mode='FACE_AREA_WITH_ANGLE';weighted.weight=35
         bpy.ops.object.modifier_apply(modifier=weighted.name)
@@ -601,7 +613,7 @@
     o=bpy.data.objects.new(name,None);sc.collection.objects.link(o);o.location=worldp(p);o.parent=parent;o.empty_display_size=2;return o
 for i,p in enumerate(THRUSTERS):empty('Thruster_'+str(i+1),p)
 empty('Camera_Chase',(0,315,110))
-empty('Light_Nav_L',(63,5,1))['color']=[1.0,0.0,0.0];empty('Light_Nav_R',(-63,5,1))['color']=[0.0,1.0,0.0];empty('Light_Beacon',(0,34,50))['color']=[1.0,.12,.0]
+empty('Light_Nav_L',(63,5,1))['color']=[1.0,0.0,0.0];empty('Light_Nav_R',(-63,5,1))['color']=[0.0,1.0,0.0];empty('Light_Beacon',surface(34,0,5))['color']=[1.0,.12,.0]
 asset=[o for o in sc.objects]
 bpy.context.view_layer.update()
 tri=sum(len(o.data.polygons) for o in objs)

diff --git a/jobs/alien-harvester-v1/build_alien-harvester.py b/jobs/alien-harvester-v1/build_alien-harvester.py
index 2fd1298f86ec659e97961d76bdbc9f692a926df6..250aad972d1543fc5b470fc681f46d81f4afd738
--- a/jobs/alien-harvester-v1/build_alien-harvester.py
+++ b/jobs/alien-harvester-v1/build_alien-harvester.py
@@ -161,7 +161,7 @@
 # Identical metal stock normal bakes share one image in the delivered GLB.
 MATS[3].node_tree.nodes['Normal'].image=MATS[1].node_tree.nodes['Normal'].image
 
-for name,col,strength in [('Lamps',(1,.15,.008,1),2.3),('Engines',(1,.22,.018,1),2.2)]:
+for name,col,strength in [('Lamps',(1,.18,.004,1),1.8),('Engines',(1,.24,.009,1),1.8)]:
     m=bpy.data.materials.new(name);m.use_nodes=True;p=m.node_tree.nodes.get('Principled BSDF');p.inputs['Base Color'].default_value=col;p.inputs['Roughness'].default_value=.34;p.inputs['Metallic'].default_value=.3;p.inputs['Emission Color'].default_value=col;p.inputs['Emission Strength'].default_value=strength;MATS.append(m)
 
 class Geo:
@@ -271,7 +271,11 @@
     for i in range(len(profile)-1):
         a,b=profile[i:i+2]
         if a[0]<=y<=b[0]:
-            t=(y-a[0])/(b[0]-a[0]);t=t*t*(3-2*t);return tuple(a[k]*(1-t)+b[k]*t for k in range(1,4))
+            # C1-continuous loft: no flattened shoulder or pinched ring at each
+            # control station, and the overlaid armour uses the identical skin.
+            prev=profile[max(0,i-1)];nxt=profile[min(len(profile)-1,i+2)]
+            span=b[0]-a[0];t=(y-a[0])/span
+            return tuple((2*t**3-3*t*t+1)*a[k]+(t**3-2*t*t+t)*span*(b[k]-prev[k])/(b[0]-prev[0])+(-2*t**3+3*t*t)*b[k]+(t**3-t*t)*span*(nxt[k]-a[k])/(nxt[0]-a[0]) for k in range(1,4))
     return profile[0][1:] if y<profile[0][0] else profile[-1][1:]
 def surface(y,t,offset=0):
     w,z,c=shape(y);return Vector(((w*1.05+offset)*math.sin(t),y,c+(z*1.30+offset)*math.cos(t)))
@@ -350,8 +354,10 @@
     if cy>0:raw=[(-L*.53,-H*.29),(-L*.36,H*.45),(L*.41,H*.42),(L*.52,H*.23),(L*.45,-H*.31),(L*.21,-H*.46),(-L*.35,-H*.43)]
     p2=catmull([(y,0,z) for y,z in raw+[raw[0],raw[1]]],4)[:-4]
     p2=p2[:-1] if (p2[0]-p2[-1]).length<.01 else p2
-    cx=shape(cy)[0]*1.05-.5
-    ringspec=[(.96,0), (1.08,2.3),(1.04,5.4),(.87,6.5),(.79,4.8),(.79,1.8)]
+    # Seat the back into the shell, but keep the entire opening in front of all
+    # overlapping armour, including the broad shoulder at the forward end.
+    cx=max(shape(cy-L*.58+i*L*1.16/32)[0] for i in range(33))*1.05+3.3
+    ringspec=[(.96,-8.0), (1.08,1.2),(1.04,5.4),(.87,6.5),(.79,4.8),(.79,1.8)]
     vs=[];n=len(p2)
     for scale,depth in ringspec:
         for p in p2:vs.append((sign*(cx+depth),cy+p.x*scale,cz+p.z*scale))
@@ -412,8 +418,8 @@
     for j in range(6):
         u=j/5;r=26.1-7*u;a=t+.085*u;pts.append((r*math.cos(a),-201+11*u,r*.89*math.sin(a)))
     tube(h,pts,[.90,1.05,.98,.81,.54,.23],2,9)
-    lit=[Vector(p)+Vector((-.16*math.cos(t),-.72,-.16*math.sin(t))) for p in pts]
-    tube(h,lit,[.29,.46,.44,.38,.24,.08],4,7)
+    lit=[Vector(p)+Vector((-.16*math.cos(t),-.98,-.16*math.sin(t))) for p in pts]
+    tube(h,lit,[.46,.65,.61,.47,.27,.08],4,8)
     # Dark rib continuing down the gullet from each luminous tooth.
     pts2=[]
     for j in range(6):
@@ -454,7 +460,7 @@
         theta=row*.43;base=surface(yy+row*3,theta,2.0);ht=(23 if row==0 else 18)*math.sin((i+1)/9*math.pi)**.5*(1+.10*math.sin(i*2.7))
         pts=catmull([base,base+Vector((row*2,3,ht*.4)),base+Vector((row*5,11,ht*.78)),base+Vector((row*7,21,ht))],5)
         rr=[3.6*(1-j/(len(pts)-1))**1.05+.035 for j in range(len(pts))]
-        tube(h,pts,rr,2,10,.66);ellipsoid(h,base,(5.3,7.8,2.8),0,18,8)
+        tube(h,pts,rr,2,12,ellipse=.66);ellipsoid(h,base,(5.3,7.8,2.8),0,18,8)
         ring(h,base+Vector((0,0,1.8)),(0,0,1),4.1,.6,2,24,7,1.25)
         tube(h,[base+Vector((row*2,0,1)),base+Vector((row*3,4,ht*.36)),base+Vector((row*5,11,ht*.7))],[.35,.28,.05],1,6)
 
@@ -462,13 +468,15 @@
 for s in [-1,1]:
     for zz in [-14,15]:
         pts=catmull([(s*28,132,zz),(s*31,163,zz*1.1),(s*26,189,zz*1.08),(s*21,211,zz*.9)],6)
-        rr=[6*(1-i/(len(pts)-1))**.8+.07 for i in range(len(pts))];tube(h,pts,rr,0,14,.58)
+        rr=[6*(1-i/(len(pts)-1))**.8+.07 for i in range(len(pts))];tube(h,pts,rr,0,14,ellipse=.58)
         tube(h,[p+Vector((0,0,2.2 if zz>0 else -2.2)) for p in pts[:-3]],[.30]*len(pts[:-3]),1,6)
 
 # Three main engines, bevelled ring exits, recessed glowing interiors.
 THRUSTERS=[]
-for i,(x,z,r,end) in enumerate([(-24,-7,12,196),(24,-7,12,196),(0,15,9,201)]):
-    tube(h,[(x,133,z),(x,147,z),(x,169,z),(x,end-4,z)],[r*.83,r*1.21,r*1.1,r],0,48)
+for i,(x,z,r,end) in enumerate([(-24,-7,12,214),(24,-7,12,214),(0,15,9,218)]):
+    # Nozzles extend clear of the tail skin, with an open casing and a closed
+    # emissive bowl. No hidden cap may cut across the glowing exit aperture.
+    tube(h,[(x,133,z),(x,147,z),(x,169,z),(x,end-4,z)],[r*.83,r*1.21,r*1.1,r],0,48,cap=False)
     ring(h,(x,151,z),(0,1,0),r*1.16,.9,2,48,8)
     # Exposed hot chamber between overlapping casing collars, visible from the side.
     for yy in [165,167.3,169.6,171.9]:ring(h,(x,yy,z),(0,1,0),r*1.115,.82,5,48,6)
@@ -497,7 +505,7 @@
 arms=[]
 for side in [-1,1]:
     for j,y in enumerate([-54,5,64]):
-        idx=len(arms)+1;root=Vector((side*(44-j*1.5),y+(24 if side<0 else 0),-29+j*.4));g=Geo('Arm_'+str(idx),root)
+        idx=len(arms)+1;root=Vector((side*(44-j*1.5),y+(34 if side<0 else 0),-29+j*.4));g=Geo('Arm_'+str(idx),root)
         ellipsoid(h,root+Vector((0,0,2)),(10.2,10.8,5.7),0,24,10)
         axis=Vector((side*.45,0,-.89)).normalized()
         ring(h,root+axis*1.0,axis,8.3,1.55,0,40,8)
@@ -507,6 +515,10 @@
         if side<0:dy=[v+5*math.sin(k*1.4+j) for k,v in enumerate(dy)]
         curl=[(6,dy[0],-12),(18-j,dy[1],-26),(30-j*4,dy[2],-39-j*2),(26-j*4,dy[3],-50-j*2),(16+j,dy[4],-54-j+(3 if side<0 else 0))]
         if j==2:curl=[(5,dy[0],-12),(13,dy[1],-23),(28,dy[2],-34),(28,dy[3],-48),(14,dy[4],-59)]
+        if side<0:
+            # A second, lower fan gives six distinct hanging silhouettes, with
+            # different tip heights rather than three mirrored hidden limbs.
+            curl=[(x*1.13,dy,dz*(1.24+.055*j)) for x,dy,dz in curl]
         points=[root]+[root+Vector((side*x,dy,dz)) for x,dy,dz in curl]
         pts=catmull(points,7);N=len(pts)
         rr=[6.5*(1-i/(N-1))+.95 for i in range(N)]
@@ -515,7 +527,7 @@
         for k in range(0,N-2,2):
             a,b=pts[k],pts[min(k+2,N-1)];mid=(a+b)/2;direction=(b-a).normalized();length=(b-a).length
             r=rr[k]+.4
-            tube(g,[a,a+direction*.5,b-direction*.55,b],[r*.91,r*1.08,r*1.02,r*.85],0,14,.88)
+            tube(g,[a,a+direction*.5,b-direction*.55,b],[r*.91,r*1.08,r*1.02,r*.85],0,14,ellipse=.88)
             ring(g,a+direction*.6,direction,r*1.02,.22,1,14,6,.88)
             # One narrow spinal rail down every link; no free-floating greebles.
             lateral=Vector((side,0,0));tube(g,[a+lateral*r*.89,mid+lateral*(r+ .15),b+lateral*r*.79],[.3,.34,.22],2,6)
@@ -544,7 +556,7 @@
             for bb in [-1.15,1.15]:
                 q=p+a*aa+b*bb+n*.35;tube(h,[q,q+n*.10],.12,1,7)
         # Small slit receiver: the ship has no windows or cockpit.
-        q=p+n*.4+b*(-.7);rounded_box(h,q,(.7,.14,.12),4,.045,B)
+        q=p+n*.4+b*(-.7);rounded_box(h,q,(.7,.14,.12),2,.045,B)
     for yy in [-150,-102,-63,-20,20,60,97,132]:
         theta=side*2.04;p=surface(yy,theta,1.5)
         n=Vector((math.sin(theta),0,math.cos(theta)));a=Vector((0,1,0));b=n.cross(a);B=Matrix(((a.x,b.x,n.x),(a.y,b.y,n.y),(a.z,b.z,n.z)))
@@ -585,7 +597,7 @@
 for ob in objs:
     select(ob);mod=ob.modifiers.new('Triangulated runtime surface','TRIANGULATE');bpy.ops.object.modifier_apply(modifier=mod.name)
     if ob==hull:
-        dec=ob.modifiers.new('Runtime surface reduction','DECIMATE');dec.ratio=min(.90,(182000-sum(len(a.data.polygons)*2 for a in objs[1:]))/len(ob.data.polygons));dec.use_collapse_triangulate=True;bpy.ops.object.modifier_apply(modifier=dec.name)
+        dec=ob.modifiers.new('Runtime surface reduction','DECIMATE');dec.ratio=min(.90,(178000-sum(len(a.data.polygons)*2 for a in objs[1:]))/len(ob.data.polygons));dec.use_collapse_triangulate=True;bpy.ops.object.modifier_apply(modifier=dec.name)
     if ob==hull:
         weighted=ob.modifiers.new('Area weighted armour shading','WEIGHTED_NORMAL');weighted.keep_sharp=True;weighted.mode='FACE_AREA_WITH_ANGLE';weighted.weight=35
         bpy.ops.object.modifier_apply(modifier=weighted.name)
@@ -601,7 +613,7 @@
     o=bpy.data.objects.new(name,None);sc.collection.objects.link(o);o.location=worldp(p);o.parent=parent;o.empty_display_size=2;return o
 for i,p in enumerate(THRUSTERS):empty('Thruster_'+str(i+1),p)
 empty('Camera_Chase',(0,315,110))
-empty('Light_Nav_L',(63,5,1))['color']=[1.0,0.0,0.0];empty('Light_Nav_R',(-63,5,1))['color']=[0.0,1.0,0.0];empty('Light_Beacon',(0,34,50))['color']=[1.0,.12,.0]
+empty('Light_Nav_L',(63,5,1))['color']=[1.0,0.0,0.0];empty('Light_Nav_R',(-63,5,1))['color']=[0.0,1.0,0.0];empty('Light_Beacon',surface(34,0,5))['color']=[1.0,.12,.0]
 asset=[o for o in sc.objects]
 bpy.context.view_layer.update()
 tri=sum(len(o.data.polygons) for o in objs)

 succeeded in 2683ms:
hook: PreToolUse
hook: PreToolUse Completed
hook: PreToolUse
hook: PreToolUse Completed
hook: PreToolUse
hook: PreToolUse Completed
diff --git a/jobs/alien-harvester-v1/build_alien-harvester.py b/jobs/alien-harvester-v1/build_alien-harvester.py
index 2fd1298f86ec659e97961d76bdbc9f692a926df6..250aad972d1543fc5b470fc681f46d81f4afd738
--- a/jobs/alien-harvester-v1/build_alien-harvester.py
+++ b/jobs/alien-harvester-v1/build_alien-harvester.py
@@ -161,7 +161,7 @@
 # Identical metal stock normal bakes share one image in the delivered GLB.
 MATS[3].node_tree.nodes['Normal'].image=MATS[1].node_tree.nodes['Normal'].image
 
-for name,col,strength in [('Lamps',(1,.15,.008,1),2.3),('Engines',(1,.22,.018,1),2.2)]:
+for name,col,strength in [('Lamps',(1,.18,.004,1),1.8),('Engines',(1,.24,.009,1),1.8)]:
     m=bpy.data.materials.new(name);m.use_nodes=True;p=m.node_tree.nodes.get('Principled BSDF');p.inputs['Base Color'].default_value=col;p.inputs['Roughness'].default_value=.34;p.inputs['Metallic'].default_value=.3;p.inputs['Emission Color'].default_value=col;p.inputs['Emission Strength'].default_value=strength;MATS.append(m)
 
 class Geo:
@@ -271,7 +271,11 @@
     for i in range(len(profile)-1):
         a,b=profile[i:i+2]
         if a[0]<=y<=b[0]:
-            t=(y-a[0])/(b[0]-a[0]);t=t*t*(3-2*t);return tuple(a[k]*(1-t)+b[k]*t for k in range(1,4))
+            # C1-continuous loft: no flattened shoulder or pinched ring at each
+            # control station, and the overlaid armour uses the identical skin.
+            prev=profile[max(0,i-1)];nxt=profile[min(len(profile)-1,i+2)]
+            span=b[0]-a[0];t=(y-a[0])/span
+            return tuple((2*t**3-3*t*t+1)*a[k]+(t**3-2*t*t+t)*span*(b[k]-prev[k])/(b[0]-prev[0])+(-2*t**3+3*t*t)*b[k]+(t**3-t*t)*span*(nxt[k]-a[k])/(nxt[0]-a[0]) for k in range(1,4))
     return profile[0][1:] if y<profile[0][0] else profile[-1][1:]
 def surface(y,t,offset=0):
     w,z,c=shape(y);return Vector(((w*1.05+offset)*math.sin(t),y,c+(z*1.30+offset)*math.cos(t)))
@@ -350,8 +354,10 @@
     if cy>0:raw=[(-L*.53,-H*.29),(-L*.36,H*.45),(L*.41,H*.42),(L*.52,H*.23),(L*.45,-H*.31),(L*.21,-H*.46),(-L*.35,-H*.43)]
     p2=catmull([(y,0,z) for y,z in raw+[raw[0],raw[1]]],4)[:-4]
     p2=p2[:-1] if (p2[0]-p2[-1]).length<.01 else p2
-    cx=shape(cy)[0]*1.05-.5
-    ringspec=[(.96,0), (1.08,2.3),(1.04,5.4),(.87,6.5),(.79,4.8),(.79,1.8)]
+    # Seat the back into the shell, but keep the entire opening in front of all
+    # overlapping armour, including the broad shoulder at the forward end.
+    cx=max(shape(cy-L*.58+i*L*1.16/32)[0] for i in range(33))*1.05+3.3
+    ringspec=[(.96,-8.0), (1.08,1.2),(1.04,5.4),(.87,6.5),(.79,4.8),(.79,1.8)]
     vs=[];n=len(p2)
     for scale,depth in ringspec:
         for p in p2:vs.append((sign*(cx+depth),cy+p.x*scale,cz+p.z*scale))
@@ -412,8 +418,8 @@
     for j in range(6):
         u=j/5;r=26.1-7*u;a=t+.085*u;pts.append((r*math.cos(a),-201+11*u,r*.89*math.sin(a)))
     tube(h,pts,[.90,1.05,.98,.81,.54,.23],2,9)
-    lit=[Vector(p)+Vector((-.16*math.cos(t),-.72,-.16*math.sin(t))) for p in pts]
-    tube(h,lit,[.29,.46,.44,.38,.24,.08],4,7)
+    lit=[Vector(p)+Vector((-.16*math.cos(t),-.98,-.16*math.sin(t))) for p in pts]
+    tube(h,lit,[.46,.65,.61,.47,.27,.08],4,8)
     # Dark rib continuing down the gullet from each luminous tooth.
     pts2=[]
     for j in range(6):
@@ -454,7 +460,7 @@
         theta=row*.43;base=surface(yy+row*3,theta,2.0);ht=(23 if row==0 else 18)*math.sin((i+1)/9*math.pi)**.5*(1+.10*math.sin(i*2.7))
         pts=catmull([base,base+Vector((row*2,3,ht*.4)),base+Vector((row*5,11,ht*.78)),base+Vector((row*7,21,ht))],5)
         rr=[3.6*(1-j/(len(pts)-1))**1.05+.035 for j in range(len(pts))]
-        tube(h,pts,rr,2,10,.66);ellipsoid(h,base,(5.3,7.8,2.8),0,18,8)
+        tube(h,pts,rr,2,12,ellipse=.66);ellipsoid(h,base,(5.3,7.8,2.8),0,18,8)
         ring(h,base+Vector((0,0,1.8)),(0,0,1),4.1,.6,2,24,7,1.25)
         tube(h,[base+Vector((row*2,0,1)),base+Vector((row*3,4,ht*.36)),base+Vector((row*5,11,ht*.7))],[.35,.28,.05],1,6)
 
@@ -462,13 +468,15 @@
 for s in [-1,1]:
     for zz in [-14,15]:
         pts=catmull([(s*28,132,zz),(s*31,163,zz*1.1),(s*26,189,zz*1.08),(s*21,211,zz*.9)],6)
-        rr=[6*(1-i/(len(pts)-1))**.8+.07 for i in range(len(pts))];tube(h,pts,rr,0,14,.58)
+        rr=[6*(1-i/(len(pts)-1))**.8+.07 for i in range(len(pts))];tube(h,pts,rr,0,14,ellipse=.58)
         tube(h,[p+Vector((0,0,2.2 if zz>0 else -2.2)) for p in pts[:-3]],[.30]*len(pts[:-3]),1,6)
 
 # Three main engines, bevelled ring exits, recessed glowing interiors.
 THRUSTERS=[]
-for i,(x,z,r,end) in enumerate([(-24,-7,12,196),(24,-7,12,196),(0,15,9,201)]):
-    tube(h,[(x,133,z),(x,147,z),(x,169,z),(x,end-4,z)],[r*.83,r*1.21,r*1.1,r],0,48)
+for i,(x,z,r,end) in enumerate([(-24,-7,12,214),(24,-7,12,214),(0,15,9,218)]):
+    # Nozzles extend clear of the tail skin, with an open casing and a closed
+    # emissive bowl. No hidden cap may cut across the glowing exit aperture.
+    tube(h,[(x,133,z),(x,147,z),(x,169,z),(x,end-4,z)],[r*.83,r*1.21,r*1.1,r],0,48,cap=False)
     ring(h,(x,151,z),(0,1,0),r*1.16,.9,2,48,8)
     # Exposed hot chamber between overlapping casing collars, visible from the side.
     for yy in [165,167.3,169.6,171.9]:ring(h,(x,yy,z),(0,1,0),r*1.115,.82,5,48,6)
@@ -497,7 +505,7 @@
 arms=[]
 for side in [-1,1]:
     for j,y in enumerate([-54,5,64]):
-        idx=len(arms)+1;root=Vector((side*(44-j*1.5),y+(24 if side<0 else 0),-29+j*.4));g=Geo('Arm_'+str(idx),root)
+        idx=len(arms)+1;root=Vector((side*(44-j*1.5),y+(34 if side<0 else 0),-29+j*.4));g=Geo('Arm_'+str(idx),root)
         ellipsoid(h,root+Vector((0,0,2)),(10.2,10.8,5.7),0,24,10)
         axis=Vector((side*.45,0,-.89)).normalized()
         ring(h,root+axis*1.0,axis,8.3,1.55,0,40,8)
@@ -507,6 +515,10 @@
         if side<0:dy=[v+5*math.sin(k*1.4+j) for k,v in enumerate(dy)]
         curl=[(6,dy[0],-12),(18-j,dy[1],-26),(30-j*4,dy[2],-39-j*2),(26-j*4,dy[3],-50-j*2),(16+j,dy[4],-54-j+(3 if side<0 else 0))]
         if j==2:curl=[(5,dy[0],-12),(13,dy[1],-23),(28,dy[2],-34),(28,dy[3],-48),(14,dy[4],-59)]
+        if side<0:
+            # A second, lower fan gives six distinct hanging silhouettes, with
+            # different tip heights rather than three mirrored hidden limbs.
+            curl=[(x*1.13,dy,dz*(1.24+.055*j)) for x,dy,dz in curl]
         points=[root]+[root+Vector((side*x,dy,dz)) for x,dy,dz in curl]
         pts=catmull(points,7);N=len(pts)
         rr=[6.5*(1-i/(N-1))+.95 for i in range(N)]
@@ -515,7 +527,7 @@
         for k in range(0,N-2,2):
             a,b=pts[k],pts[min(k+2,N-1)];mid=(a+b)/2;direction=(b-a).normalized();length=(b-a).length
             r=rr[k]+.4
-            tube(g,[a,a+direction*.5,b-direction*.55,b],[r*.91,r*1.08,r*1.02,r*.85],0,14,.88)
+            tube(g,[a,a+direction*.5,b-direction*.55,b],[r*.91,r*1.08,r*1.02,r*.85],0,14,ellipse=.88)
             ring(g,a+direction*.6,direction,r*1.02,.22,1,14,6,.88)
             # One narrow spinal rail down every link; no free-floating greebles.
             lateral=Vector((side,0,0));tube(g,[a+lateral*r*.89,mid+lateral*(r+ .15),b+lateral*r*.79],[.3,.34,.22],2,6)
@@ -544,7 +556,7 @@
             for bb in [-1.15,1.15]:
                 q=p+a*aa+b*bb+n*.35;tube(h,[q,q+n*.10],.12,1,7)
         # Small slit receiver: the ship has no windows or cockpit.
-        q=p+n*.4+b*(-.7);rounded_box(h,q,(.7,.14,.12),4,.045,B)
+        q=p+n*.4+b*(-.7);rounded_box(h,q,(.7,.14,.12),2,.045,B)
     for yy in [-150,-102,-63,-20,20,60,97,132]:
         theta=side*2.04;p=surface(yy,theta,1.5)
         n=Vector((math.sin(theta),0,math.cos(theta)));a=Vector((0,1,0));b=n.cross(a);B=Matrix(((a.x,b.x,n.x),(a.y,b.y,n.y),(a.z,b.z,n.z)))
@@ -585,7 +597,7 @@
 for ob in objs:
     select(ob);mod=ob.modifiers.new('Triangulated runtime surface','TRIANGULATE');bpy.ops.object.modifier_apply(modifier=mod.name)
     if ob==hull:
-        dec=ob.modifiers.new('Runtime surface reduction','DECIMATE');dec.ratio=min(.90,(182000-sum(len(a.data.polygons)*2 for a in objs[1:]))/len(ob.data.polygons));dec.use_collapse_triangulate=True;bpy.ops.object.modifier_apply(modifier=dec.name)
+        dec=ob.modifiers.new('Runtime surface reduction','DECIMATE');dec.ratio=min(.90,(178000-sum(len(a.data.polygons)*2 for a in objs[1:]))/len(ob.data.polygons));dec.use_collapse_triangulate=True;bpy.ops.object.modifier_apply(modifier=dec.name)
     if ob==hull:
         weighted=ob.modifiers.new('Area weighted armour shading','WEIGHTED_NORMAL');weighted.keep_sharp=True;weighted.mode='FACE_AREA_WITH_ANGLE';weighted.weight=35
         bpy.ops.object.modifier_apply(modifier=weighted.name)
@@ -601,7 +613,7 @@
     o=bpy.data.objects.new(name,None);sc.collection.objects.link(o);o.location=worldp(p);o.parent=parent;o.empty_display_size=2;return o
 for i,p in enumerate(THRUSTERS):empty('Thruster_'+str(i+1),p)
 empty('Camera_Chase',(0,315,110))
-empty('Light_Nav_L',(63,5,1))['color']=[1.0,0.0,0.0];empty('Light_Nav_R',(-63,5,1))['color']=[0.0,1.0,0.0];empty('Light_Beacon',(0,34,50))['color']=[1.0,.12,.0]
+empty('Light_Nav_L',(63,5,1))['color']=[1.0,0.0,0.0];empty('Light_Nav_R',(-63,5,1))['color']=[0.0,1.0,0.0];empty('Light_Beacon',surface(34,0,5))['color']=[1.0,.12,.0]
 asset=[o for o in sc.objects]
 bpy.context.view_layer.update()
 tri=sum(len(o.data.polygons) for o in objs)

hook: PreToolUse
hook: PreToolUse
hook: PreToolUse
hook: PreToolUse Completed
hook: PreToolUse Completed
hook: PreToolUse Completed
apply patch
patch: completed
/home/claude-agent/forge-build/forge-assets/jobs/alien-harvester-v1/build_alien-harvester.py
diff --git a/jobs/alien-harvester-v1/build_alien-harvester.py b/jobs/alien-harvester-v1/build_alien-harvester.py
index 2fd1298f86ec659e97961d76bdbc9f692a926df6..57f69696c1bb60d37c2615501f86a75a47bda397
--- a/jobs/alien-harvester-v1/build_alien-harvester.py
+++ b/jobs/alien-harvester-v1/build_alien-harvester.py
@@ -161,7 +161,7 @@
 # Identical metal stock normal bakes share one image in the delivered GLB.
 MATS[3].node_tree.nodes['Normal'].image=MATS[1].node_tree.nodes['Normal'].image
 
-for name,col,strength in [('Lamps',(1,.15,.008,1),2.3),('Engines',(1,.22,.018,1),2.2)]:
+for name,col,strength in [('Lamps',(1,.18,.004,1),1.8),('Engines',(1,.24,.009,1),1.8)]:
     m=bpy.data.materials.new(name);m.use_nodes=True;p=m.node_tree.nodes.get('Principled BSDF');p.inputs['Base Color'].default_value=col;p.inputs['Roughness'].default_value=.34;p.inputs['Metallic'].default_value=.3;p.inputs['Emission Color'].default_value=col;p.inputs['Emission Strength'].default_value=strength;MATS.append(m)
 
 class Geo:
@@ -271,7 +271,11 @@
     for i in range(len(profile)-1):
         a,b=profile[i:i+2]
         if a[0]<=y<=b[0]:
-            t=(y-a[0])/(b[0]-a[0]);t=t*t*(3-2*t);return tuple(a[k]*(1-t)+b[k]*t for k in range(1,4))
+            # C1-continuous loft: no flattened shoulder or pinched ring at each
+            # control station, and the overlaid armour uses the identical skin.
+            prev=profile[max(0,i-1)];nxt=profile[min(len(profile)-1,i+2)]
+            span=b[0]-a[0];t=(y-a[0])/span
+            return tuple((2*t**3-3*t*t+1)*a[k]+(t**3-2*t*t+t)*span*(b[k]-prev[k])/(b[0]-prev[0])+(-2*t**3+3*t*t)*b[k]+(t**3-t*t)*span*(nxt[k]-a[k])/(nxt[0]-a[0]) for k in range(1,4))
     return profile[0][1:] if y<profile[0][0] else profile[-1][1:]
 def surface(y,t,offset=0):
     w,z,c=shape(y);return Vector(((w*1.05+offset)*math.sin(t),y,c+(z*1.30+offset)*math.cos(t)))
@@ -350,8 +354,10 @@
     if cy>0:raw=[(-L*.53,-H*.29),(-L*.36,H*.45),(L*.41,H*.42),(L*.52,H*.23),(L*.45,-H*.31),(L*.21,-H*.46),(-L*.35,-H*.43)]
     p2=catmull([(y,0,z) for y,z in raw+[raw[0],raw[1]]],4)[:-4]
     p2=p2[:-1] if (p2[0]-p2[-1]).length<.01 else p2
-    cx=shape(cy)[0]*1.05-.5
-    ringspec=[(.96,0), (1.08,2.3),(1.04,5.4),(.87,6.5),(.79,4.8),(.79,1.8)]
+    # Seat the back into the shell, but keep the entire opening in front of all
+    # overlapping armour, including the broad shoulder at the forward end.
+    cx=max(shape(cy-L*.58+i*L*1.16/32)[0] for i in range(33))*1.05+3.3
+    ringspec=[(.96,-8.0), (1.08,1.2),(1.04,5.4),(.87,6.5),(.79,4.8),(.79,1.8)]
     vs=[];n=len(p2)
     for scale,depth in ringspec:
         for p in p2:vs.append((sign*(cx+depth),cy+p.x*scale,cz+p.z*scale))
@@ -412,8 +418,8 @@
     for j in range(6):
         u=j/5;r=26.1-7*u;a=t+.085*u;pts.append((r*math.cos(a),-201+11*u,r*.89*math.sin(a)))
     tube(h,pts,[.90,1.05,.98,.81,.54,.23],2,9)
-    lit=[Vector(p)+Vector((-.16*math.cos(t),-.72,-.16*math.sin(t))) for p in pts]
-    tube(h,lit,[.29,.46,.44,.38,.24,.08],4,7)
+    lit=[Vector(p)+Vector((-.16*math.cos(t),-.98,-.16*math.sin(t))) for p in pts]
+    tube(h,lit,[.46,.65,.61,.47,.27,.08],4,8)
     # Dark rib continuing down the gullet from each luminous tooth.
     pts2=[]
     for j in range(6):
@@ -454,21 +460,23 @@
         theta=row*.43;base=surface(yy+row*3,theta,2.0);ht=(23 if row==0 else 18)*math.sin((i+1)/9*math.pi)**.5*(1+.10*math.sin(i*2.7))
         pts=catmull([base,base+Vector((row*2,3,ht*.4)),base+Vector((row*5,11,ht*.78)),base+Vector((row*7,21,ht))],5)
         rr=[3.6*(1-j/(len(pts)-1))**1.05+.035 for j in range(len(pts))]
-        tube(h,pts,rr,2,10,.66);ellipsoid(h,base,(5.3,7.8,2.8),0,18,8)
+        tube(h,pts,rr,2,12,ellipse=.66);ellipsoid(h,base,(5.3,7.8,2.8),0,18,8)
         ring(h,base+Vector((0,0,1.8)),(0,0,1),4.1,.6,2,24,7,1.25)
         tube(h,[base+Vector((row*2,0,1)),base+Vector((row*3,4,ht*.36)),base+Vector((row*5,11,ht*.7))],[.35,.28,.05],1,6)
 
 # Tail split vanes around the engine cluster: swept, no familiar human ship tail.
 for s in [-1,1]:
     for zz in [-14,15]:
-        pts=catmull([(s*28,132,zz),(s*31,163,zz*1.1),(s*26,189,zz*1.08),(s*21,211,zz*.9)],6)
-        rr=[6*(1-i/(len(pts)-1))**.8+.07 for i in range(len(pts))];tube(h,pts,rr,0,14,.58)
+        pts=catmull([(s*28,132,zz),(s*31,163,zz*1.1),(s*26,198,zz*1.08),(s*21,226,zz*.9)],6)
+        rr=[6*(1-i/(len(pts)-1))**.8+.07 for i in range(len(pts))];tube(h,pts,rr,0,14,ellipse=.58)
         tube(h,[p+Vector((0,0,2.2 if zz>0 else -2.2)) for p in pts[:-3]],[.30]*len(pts[:-3]),1,6)
 
 # Three main engines, bevelled ring exits, recessed glowing interiors.
 THRUSTERS=[]
-for i,(x,z,r,end) in enumerate([(-24,-7,12,196),(24,-7,12,196),(0,15,9,201)]):
-    tube(h,[(x,133,z),(x,147,z),(x,169,z),(x,end-4,z)],[r*.83,r*1.21,r*1.1,r],0,48)
+for i,(x,z,r,end) in enumerate([(-24,-7,12,214),(24,-7,12,214),(0,15,9,218)]):
+    # Nozzles extend clear of the tail skin, with an open casing and a closed
+    # emissive bowl. No hidden cap may cut across the glowing exit aperture.
+    tube(h,[(x,133,z),(x,147,z),(x,169,z),(x,end-4,z)],[r*.83,r*1.21,r*1.1,r],0,48,cap=False)
     ring(h,(x,151,z),(0,1,0),r*1.16,.9,2,48,8)
     # Exposed hot chamber between overlapping casing collars, visible from the side.
     for yy in [165,167.3,169.6,171.9]:ring(h,(x,yy,z),(0,1,0),r*1.115,.82,5,48,6)
@@ -497,7 +505,7 @@
 arms=[]
 for side in [-1,1]:
     for j,y in enumerate([-54,5,64]):
-        idx=len(arms)+1;root=Vector((side*(44-j*1.5),y+(24 if side<0 else 0),-29+j*.4));g=Geo('Arm_'+str(idx),root)
+        idx=len(arms)+1;root=Vector((side*(44-j*1.5),y+(34 if side<0 else 0),-29+j*.4));g=Geo('Arm_'+str(idx),root)
         ellipsoid(h,root+Vector((0,0,2)),(10.2,10.8,5.7),0,24,10)
         axis=Vector((side*.45,0,-.89)).normalized()
         ring(h,root+axis*1.0,axis,8.3,1.55,0,40,8)
@@ -507,6 +515,10 @@
         if side<0:dy=[v+5*math.sin(k*1.4+j) for k,v in enumerate(dy)]
         curl=[(6,dy[0],-12),(18-j,dy[1],-26),(30-j*4,dy[2],-39-j*2),(26-j*4,dy[3],-50-j*2),(16+j,dy[4],-54-j+(3 if side<0 else 0))]
         if j==2:curl=[(5,dy[0],-12),(13,dy[1],-23),(28,dy[2],-34),(28,dy[3],-48),(14,dy[4],-59)]
+        if side<0:
+            # A second, lower fan gives six distinct hanging silhouettes, with
+            # different tip heights rather than three mirrored hidden limbs.
+            curl=[(x*1.13,dy,dz*(1.24+.055*j)) for x,dy,dz in curl]
         points=[root]+[root+Vector((side*x,dy,dz)) for x,dy,dz in curl]
         pts=catmull(points,7);N=len(pts)
         rr=[6.5*(1-i/(N-1))+.95 for i in range(N)]
@@ -515,7 +527,7 @@
         for k in range(0,N-2,2):
             a,b=pts[k],pts[min(k+2,N-1)];mid=(a+b)/2;direction=(b-a).normalized();length=(b-a).length
             r=rr[k]+.4
-            tube(g,[a,a+direction*.5,b-direction*.55,b],[r*.91,r*1.08,r*1.02,r*.85],0,14,.88)
+            tube(g,[a,a+direction*.5,b-direction*.55,b],[r*.91,r*1.08,r*1.02,r*.85],0,14,ellipse=.88)
             ring(g,a+direction*.6,direction,r*1.02,.22,1,14,6,.88)
             # One narrow spinal rail down every link; no free-floating greebles.
             lateral=Vector((side,0,0));tube(g,[a+lateral*r*.89,mid+lateral*(r+ .15),b+lateral*r*.79],[.3,.34,.22],2,6)
@@ -544,7 +556,7 @@
             for bb in [-1.15,1.15]:
                 q=p+a*aa+b*bb+n*.35;tube(h,[q,q+n*.10],.12,1,7)
         # Small slit receiver: the ship has no windows or cockpit.
-        q=p+n*.4+b*(-.7);rounded_box(h,q,(.7,.14,.12),4,.045,B)
+        q=p+n*.4+b*(-.7);rounded_box(h,q,(.7,.14,.12),2,.045,B)
     for yy in [-150,-102,-63,-20,20,60,97,132]:
         theta=side*2.04;p=surface(yy,theta,1.5)
         n=Vector((math.sin(theta),0,math.cos(theta)));a=Vector((0,1,0));b=n.cross(a);B=Matrix(((a.x,b.x,n.x),(a.y,b.y,n.y),(a.z,b.z,n.z)))
@@ -585,7 +597,7 @@
 for ob in objs:
     select(ob);mod=ob.modifiers.new('Triangulated runtime surface','TRIANGULATE');bpy.ops.object.modifier_apply(modifier=mod.name)
     if ob==hull:
-        dec=ob.modifiers.new('Runtime surface reduction','DECIMATE');dec.ratio=min(.90,(182000-sum(len(a.data.polygons)*2 for a in objs[1:]))/len(ob.data.polygons));dec.use_collapse_triangulate=True;bpy.ops.object.modifier_apply(modifier=dec.name)
+        dec=ob.modifiers.new('Runtime surface reduction','DECIMATE');dec.ratio=min(.90,(178000-sum(len(a.data.polygons)*2 for a in objs[1:]))/len(ob.data.polygons));dec.use_collapse_triangulate=True;bpy.ops.object.modifier_apply(modifier=dec.name)
     if ob==hull:
         weighted=ob.modifiers.new('Area weighted armour shading','WEIGHTED_NORMAL');weighted.keep_sharp=True;weighted.mode='FACE_AREA_WITH_ANGLE';weighted.weight=35
         bpy.ops.object.modifier_apply(modifier=weighted.name)
@@ -601,7 +613,7 @@
     o=bpy.data.objects.new(name,None);sc.collection.objects.link(o);o.location=worldp(p);o.parent=parent;o.empty_display_size=2;return o
 for i,p in enumerate(THRUSTERS):empty('Thruster_'+str(i+1),p)
 empty('Camera_Chase',(0,315,110))
-empty('Light_Nav_L',(63,5,1))['color']=[1.0,0.0,0.0];empty('Light_Nav_R',(-63,5,1))['color']=[0.0,1.0,0.0];empty('Light_Beacon',(0,34,50))['color']=[1.0,.12,.0]
+empty('Light_Nav_L',(63,5,1))['color']=[1.0,0.0,0.0];empty('Light_Nav_R',(-63,5,1))['color']=[0.0,1.0,0.0];empty('Light_Beacon',surface(34,0,5))['color']=[1.0,.12,.0]
 asset=[o for o in sc.objects]
 bpy.context.view_layer.update()
 tri=sum(len(o.data.polygons) for o in objs)
@@ -619,10 +631,11 @@
 area('Cool fill',(-190,-50,70),480000,230,(.51,.68,1))
 area('Aft rim',(100,220,200),1250000,170,(.68,.8,1))
 area('Under bounce',(40,-80,-200),290000,220,(.64,.72,.9))
+area('Arm reflection',(220,-160,-120),650000,220,(.73,.82,1),target=(0,20,-40))
 camd=bpy.data.cameras.new('Render camera');cam=bpy.data.objects.new('Render camera',camd);sc.collection.objects.link(cam);sc.camera=cam;camd.clip_end=3000
 
 def camera(kind='hero'):
-    if kind=='hero':pos=(620,-460,180);target=(0,-6,-3);camd.type='ORTHO';camd.ortho_scale=470
+    if kind=='hero':pos=(510,-665,195);target=(0,-6,-3);camd.type='ORTHO';camd.ortho_scale=440
     elif kind=='side':pos=(650,0,24);target=(0,0,-7);camd.type='ORTHO';camd.ortho_scale=466
     elif kind=='rear':pos=(325,490,180);target=(0,25,-3);camd.type='ORTHO';camd.ortho_scale=450
     else:pos=(139,-234,54);target=(34,-150,0);camd.type='ORTHO';camd.ortho_scale=130
@@ -701,7 +714,7 @@
 'Materials: Paint, Titanium, HeatScorched, Recess, Lamps, Engines; Paint neutral texture × linear faction colour, default [0.10, 0.11, 0.10].',
 'Cycles GPU baked tiling sets: 1024² base-colour and Paint normal; shared 512² metal normals; 512² ORM; 8 m world-scale UV repeats; no unique hull atlas.',
 'Poly Haven CC0 IDs: metal_plate, metal_plate_02, rusty_metal_02; https://polyhaven.com/license ; https://polyhaven.com/a/metal_plate ; https://polyhaven.com/a/metal_plate_02 ; https://polyhaven.com/a/rusty_metal_02 .',
-'Reference differences: six larger harvesting arms as requested, bespoke overlapping armour layout and three recessed rear nozzles; no windows, lettering or logos.'
+'Reference differences: six harvesting arms as requested, cleaner broad armour plates, bespoke vent fairings and three recessed rear nozzles; no windows, lettering or logos.'
 ])+'\n')
 # Clay first: verifies actual built silhouettes before the material presentation.
 camera();clay=bpy.data.materials.new('QA clay');clay.diffuse_color=(.36,.36,.36,1);clay.use_nodes=True;clay.node_tree.nodes['Principled BSDF'].inputs['Roughness'].default_value=.72;clay.node_tree.nodes['Principled BSDF'].inputs['Base Color'].default_value=(.36,.36,.36,1)

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/bin/bash -lc 'python3 -m py_compile build_alien-harvester.py
scp build_alien-harvester.py gex44:/root/fal-author/alien-harvester-v1/' in /home/claude-agent/forge-build/forge-assets/jobs/alien-harvester-v1
 succeeded in 805ms:
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/bin/bash -lc "ssh gex44 '/root/blender-spike/blender-5.2.0-linux-x64/blender -b --python-exit-code 1 --python /root/fal-author/alien-harvester-v1/build_alien-harvester.py > /root/fal-author/alien-harvester-v1/build.log 2>&1'" in /home/claude-agent/forge-build/forge-assets/jobs/alien-harvester-v1
diff --git a/jobs/alien-harvester-v1/build_alien-harvester.py b/jobs/alien-harvester-v1/build_alien-harvester.py
index 2fd1298f86ec659e97961d76bdbc9f692a926df6..57f69696c1bb60d37c2615501f86a75a47bda397
--- a/jobs/alien-harvester-v1/build_alien-harvester.py
+++ b/jobs/alien-harvester-v1/build_alien-harvester.py
@@ -161,7 +161,7 @@
 # Identical metal stock normal bakes share one image in the delivered GLB.
 MATS[3].node_tree.nodes['Normal'].image=MATS[1].node_tree.nodes['Normal'].image
 
-for name,col,strength in [('Lamps',(1,.15,.008,1),2.3),('Engines',(1,.22,.018,1),2.2)]:
+for name,col,strength in [('Lamps',(1,.18,.004,1),1.8),('Engines',(1,.24,.009,1),1.8)]:
     m=bpy.data.materials.new(name);m.use_nodes=True;p=m.node_tree.nodes.get('Principled BSDF');p.inputs['Base Color'].default_value=col;p.inputs['Roughness'].default_value=.34;p.inputs['Metallic'].default_value=.3;p.inputs['Emission Color'].default_value=col;p.inputs['Emission Strength'].default_value=strength;MATS.append(m)
 
 class Geo:
@@ -271,7 +271,11 @@
     for i in range(len(profile)-1):
         a,b=profile[i:i+2]
         if a[0]<=y<=b[0]:
-            t=(y-a[0])/(b[0]-a[0]);t=t*t*(3-2*t);return tuple(a[k]*(1-t)+b[k]*t for k in range(1,4))
+            # C1-continuous loft: no flattened shoulder or pinched ring at each
+            # control station, and the overlaid armour uses the identical skin.
+            prev=profile[max(0,i-1)];nxt=profile[min(len(profile)-1,i+2)]
+            span=b[0]-a[0];t=(y-a[0])/span
+            return tuple((2*t**3-3*t*t+1)*a[k]+(t**3-2*t*t+t)*span*(b[k]-prev[k])/(b[0]-prev[0])+(-2*t**3+3*t*t)*b[k]+(t**3-t*t)*span*(nxt[k]-a[k])/(nxt[0]-a[0]) for k in range(1,4))
     return profile[0][1:] if y<profile[0][0] else profile[-1][1:]
 def surface(y,t,offset=0):
     w,z,c=shape(y);return Vector(((w*1.05+offset)*math.sin(t),y,c+(z*1.30+offset)*math.cos(t)))
@@ -350,8 +354,10 @@
     if cy>0:raw=[(-L*.53,-H*.29),(-L*.36,H*.45),(L*.41,H*.42),(L*.52,H*.23),(L*.45,-H*.31),(L*.21,-H*.46),(-L*.35,-H*.43)]
     p2=catmull([(y,0,z) for y,z in raw+[raw[0],raw[1]]],4)[:-4]
     p2=p2[:-1] if (p2[0]-p2[-1]).length<.01 else p2
-    cx=shape(cy)[0]*1.05-.5
-    ringspec=[(.96,0), (1.08,2.3),(1.04,5.4),(.87,6.5),(.79,4.8),(.79,1.8)]
+    # Seat the back into the shell, but keep the entire opening in front of all
+    # overlapping armour, including the broad shoulder at the forward end.
+    cx=max(shape(cy-L*.58+i*L*1.16/32)[0] for i in range(33))*1.05+3.3
+    ringspec=[(.96,-8.0), (1.08,1.2),(1.04,5.4),(.87,6.5),(.79,4.8),(.79,1.8)]
     vs=[];n=len(p2)
     for scale,depth in ringspec:
         for p in p2:vs.append((sign*(cx+depth),cy+p.x*scale,cz+p.z*scale))
@@ -412,8 +418,8 @@
     for j in range(6):
         u=j/5;r=26.1-7*u;a=t+.085*u;pts.append((r*math.cos(a),-201+11*u,r*.89*math.sin(a)))
     tube(h,pts,[.90,1.05,.98,.81,.54,.23],2,9)
-    lit=[Vector(p)+Vector((-.16*math.cos(t),-.72,-.16*math.sin(t))) for p in pts]
-    tube(h,lit,[.29,.46,.44,.38,.24,.08],4,7)
+    lit=[Vector(p)+Vector((-.16*math.cos(t),-.98,-.16*math.sin(t))) for p in pts]
+    tube(h,lit,[.46,.65,.61,.47,.27,.08],4,8)
     # Dark rib continuing down the gullet from each luminous tooth.
     pts2=[]
     for j in range(6):
@@ -454,21 +460,23 @@
         theta=row*.43;base=surface(yy+row*3,theta,2.0);ht=(23 if row==0 else 18)*math.sin((i+1)/9*math.pi)**.5*(1+.10*math.sin(i*2.7))
         pts=catmull([base,base+Vector((row*2,3,ht*.4)),base+Vector((row*5,11,ht*.78)),base+Vector((row*7,21,ht))],5)
         rr=[3.6*(1-j/(len(pts)-1))**1.05+.035 for j in range(len(pts))]
-        tube(h,pts,rr,2,10,.66);ellipsoid(h,base,(5.3,7.8,2.8),0,18,8)
+        tube(h,pts,rr,2,12,ellipse=.66);ellipsoid(h,base,(5.3,7.8,2.8),0,18,8)
         ring(h,base+Vector((0,0,1.8)),(0,0,1),4.1,.6,2,24,7,1.25)
         tube(h,[base+Vector((row*2,0,1)),base+Vector((row*3,4,ht*.36)),base+Vector((row*5,11,ht*.7))],[.35,.28,.05],1,6)
 
 # Tail split vanes around the engine cluster: swept, no familiar human ship tail.
 for s in [-1,1]:
     for zz in [-14,15]:
-        pts=catmull([(s*28,132,zz),(s*31,163,zz*1.1),(s*26,189,zz*1.08),(s*21,211,zz*.9)],6)
-        rr=[6*(1-i/(len(pts)-1))**.8+.07 for i in range(len(pts))];tube(h,pts,rr,0,14,.58)
+        pts=catmull([(s*28,132,zz),(s*31,163,zz*1.1),(s*26,198,zz*1.08),(s*21,226,zz*.9)],6)
+        rr=[6*(1-i/(len(pts)-1))**.8+.07 for i in range(len(pts))];tube(h,pts,rr,0,14,ellipse=.58)
         tube(h,[p+Vector((0,0,2.2 if zz>0 else -2.2)) for p in pts[:-3]],[.30]*len(pts[:-3]),1,6)
 
 # Three main engines, bevelled ring exits, recessed glowing interiors.
 THRUSTERS=[]
-for i,(x,z,r,end) in enumerate([(-24,-7,12,196),(24,-7,12,196),(0,15,9,201)]):
-    tube(h,[(x,133,z),(x,147,z),(x,169,z),(x,end-4,z)],[r*.83,r*1.21,r*1.1,r],0,48)
+for i,(x,z,r,end) in enumerate([(-24,-7,12,214),(24,-7,12,214),(0,15,9,218)]):
+    # Nozzles extend clear of the tail skin, with an open casing and a closed
+    # emissive bowl. No hidden cap may cut across the glowing exit aperture.
+    tube(h,[(x,133,z),(x,147,z),(x,169,z),(x,end-4,z)],[r*.83,r*1.21,r*1.1,r],0,48,cap=False)
     ring(h,(x,151,z),(0,1,0),r*1.16,.9,2,48,8)
     # Exposed hot chamber between overlapping casing collars, visible from the side.
     for yy in [165,167.3,169.6,171.9]:ring(h,(x,yy,z),(0,1,0),r*1.115,.82,5,48,6)
@@ -497,7 +505,7 @@
 arms=[]
 for side in [-1,1]:
     for j,y in enumerate([-54,5,64]):
-        idx=len(arms)+1;root=Vector((side*(44-j*1.5),y+(24 if side<0 else 0),-29+j*.4));g=Geo('Arm_'+str(idx),root)
+        idx=len(arms)+1;root=Vector((side*(44-j*1.5),y+(34 if side<0 else 0),-29+j*.4));g=Geo('Arm_'+str(idx),root)
         ellipsoid(h,root+Vector((0,0,2)),(10.2,10.8,5.7),0,24,10)
         axis=Vector((side*.45,0,-.89)).normalized()
         ring(h,root+axis*1.0,axis,8.3,1.55,0,40,8)
@@ -507,6 +515,10 @@
         if side<0:dy=[v+5*math.sin(k*1.4+j) for k,v in enumerate(dy)]
         curl=[(6,dy[0],-12),(18-j,dy[1],-26),(30-j*4,dy[2],-39-j*2),(26-j*4,dy[3],-50-j*2),(16+j,dy[4],-54-j+(3 if side<0 else 0))]
         if j==2:curl=[(5,dy[0],-12),(13,dy[1],-23),(28,dy[2],-34),(28,dy[3],-48),(14,dy[4],-59)]
+        if side<0:
+            # A second, lower fan gives six distinct hanging silhouettes, with
+            # different tip heights rather than three mirrored hidden limbs.
+            curl=[(x*1.13,dy,dz*(1.24+.055*j)) for x,dy,dz in curl]
         points=[root]+[root+Vector((side*x,dy,dz)) for x,dy,dz in curl]
         pts=catmull(points,7);N=len(pts)
         rr=[6.5*(1-i/(N-1))+.95 for i in range(N)]
@@ -515,7 +527,7 @@
         for k in range(0,N-2,2):
             a,b=pts[k],pts[min(k+2,N-1)];mid=(a+b)/2;direction=(b-a).normalized();length=(b-a).length
             r=rr[k]+.4
-            tube(g,[a,a+direction*.5,b-direction*.55,b],[r*.91,r*1.08,r*1.02,r*.85],0,14,.88)
+            tube(g,[a,a+direction*.5,b-direction*.55,b],[r*.91,r*1.08,r*1.02,r*.85],0,14,ellipse=.88)
             ring(g,a+direction*.6,direction,r*1.02,.22,1,14,6,.88)
             # One narrow spinal rail down every link; no free-floating greebles.
             lateral=Vector((side,0,0));tube(g,[a+lateral*r*.89,mid+lateral*(r+ .15),b+lateral*r*.79],[.3,.34,.22],2,6)
@@ -544,7 +556,7 @@
             for bb in [-1.15,1.15]:
                 q=p+a*aa+b*bb+n*.35;tube(h,[q,q+n*.10],.12,1,7)
         # Small slit receiver: the ship has no windows or cockpit.
-        q=p+n*.4+b*(-.7);rounded_box(h,q,(.7,.14,.12),4,.045,B)
+        q=p+n*.4+b*(-.7);rounded_box(h,q,(.7,.14,.12),2,.045,B)
     for yy in [-150,-102,-63,-20,20,60,97,132]:
         theta=side*2.04;p=surface(yy,theta,1.5)
         n=Vector((math.sin(theta),0,math.cos(theta)));a=Vector((0,1,0));b=n.cross(a);B=Matrix(((a.x,b.x,n.x),(a.y,b.y,n.y),(a.z,b.z,n.z)))
@@ -585,7 +597,7 @@
 for ob in objs:
     select(ob);mod=ob.modifiers.new('Triangulated runtime surface','TRIANGULATE');bpy.ops.object.modifier_apply(modifier=mod.name)
     if ob==hull:
-        dec=ob.modifiers.new('Runtime surface reduction','DECIMATE');dec.ratio=min(.90,(182000-sum(len(a.data.polygons)*2 for a in objs[1:]))/len(ob.data.polygons));dec.use_collapse_triangulate=True;bpy.ops.object.modifier_apply(modifier=dec.name)
+        dec=ob.modifiers.new('Runtime surface reduction','DECIMATE');dec.ratio=min(.90,(178000-sum(len(a.data.polygons)*2 for a in objs[1:]))/len(ob.data.polygons));dec.use_collapse_triangulate=True;bpy.ops.object.modifier_apply(modifier=dec.name)
     if ob==hull:
         weighted=ob.modifiers.new('Area weighted armour shading','WEIGHTED_NORMAL');weighted.keep_sharp=True;weighted.mode='FACE_AREA_WITH_ANGLE';weighted.weight=35
         bpy.ops.object.modifier_apply(modifier=weighted.name)
@@ -601,7 +613,7 @@
     o=bpy.data.objects.new(name,None);sc.collection.objects.link(o);o.location=worldp(p);o.parent=parent;o.empty_display_size=2;return o
 for i,p in enumerate(THRUSTERS):empty('Thruster_'+str(i+1),p)
 empty('Camera_Chase',(0,315,110))
-empty('Light_Nav_L',(63,5,1))['color']=[1.0,0.0,0.0];empty('Light_Nav_R',(-63,5,1))['color']=[0.0,1.0,0.0];empty('Light_Beacon',(0,34,50))['color']=[1.0,.12,.0]
+empty('Light_Nav_L',(63,5,1))['color']=[1.0,0.0,0.0];empty('Light_Nav_R',(-63,5,1))['color']=[0.0,1.0,0.0];empty('Light_Beacon',surface(34,0,5))['color']=[1.0,.12,.0]
 asset=[o for o in sc.objects]
 bpy.context.view_layer.update()
 tri=sum(len(o.data.polygons) for o in objs)
@@ -619,10 +631,11 @@
 area('Cool fill',(-190,-50,70),480000,230,(.51,.68,1))
 area('Aft rim',(100,220,200),1250000,170,(.68,.8,1))
 area('Under bounce',(40,-80,-200),290000,220,(.64,.72,.9))
+area('Arm reflection',(220,-160,-120),650000,220,(.73,.82,1),target=(0,20,-40))
 camd=bpy.data.cameras.new('Render camera');cam=bpy.data.objects.new('Render camera',camd);sc.collection.objects.link(cam);sc.camera=cam;camd.clip_end=3000
 
 def camera(kind='hero'):
-    if kind=='hero':pos=(620,-460,180);target=(0,-6,-3);camd.type='ORTHO';camd.ortho_scale=470
+    if kind=='hero':pos=(510,-665,195);target=(0,-6,-3);camd.type='ORTHO';camd.ortho_scale=440
     elif kind=='side':pos=(650,0,24);target=(0,0,-7);camd.type='ORTHO';camd.ortho_scale=466
     elif kind=='rear':pos=(325,490,180);target=(0,25,-3);camd.type='ORTHO';camd.ortho_scale=450
     else:pos=(139,-234,54);target=(34,-150,0);camd.type='ORTHO';camd.ortho_scale=130
@@ -701,7 +714,7 @@
 'Materials: Paint, Titanium, HeatScorched, Recess, Lamps, Engines; Paint neutral texture × linear faction colour, default [0.10, 0.11, 0.10].',
 'Cycles GPU baked tiling sets: 1024² base-colour and Paint normal; shared 512² metal normals; 512² ORM; 8 m world-scale UV repeats; no unique hull atlas.',
 'Poly Haven CC0 IDs: metal_plate, metal_plate_02, rusty_metal_02; https://polyhaven.com/license ; https://polyhaven.com/a/metal_plate ; https://polyhaven.com/a/metal_plate_02 ; https://polyhaven.com/a/rusty_metal_02 .',
-'Reference differences: six larger harvesting arms as requested, bespoke overlapping armour layout and three recessed rear nozzles; no windows, lettering or logos.'
+'Reference differences: six harvesting arms as requested, cleaner broad armour plates, bespoke vent fairings and three recessed rear nozzles; no windows, lettering or logos.'
 ])+'\n')
 # Clay first: verifies actual built silhouettes before the material presentation.
 camera();clay=bpy.data.materials.new('QA clay');clay.diffuse_color=(.36,.36,.36,1);clay.use_nodes=True;clay.node_tree.nodes['Principled BSDF'].inputs['Roughness'].default_value=.72;clay.node_tree.nodes['Principled BSDF'].inputs['Base Color'].default_value=(.36,.36,.36,1)

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/bin/bash -lc 'ssh gex44 tail -n 6 /root/fal-author/alien-harvester-v1/build.log' in /home/claude-agent/forge-build/forge-assets/jobs/alien-harvester-v1
 succeeded in 572ms:
Info: Baking map saved to internal image, save it externally or pack it
Info: Baking map saved to internal image, save it externally or pack it
Info: Baking map saved to internal image, save it externally or pack it
HARVESTER 5.5 Bake Recess
/root/fal-author/alien-harvester-v1/build_alien-harvester.py:165: DeprecationWarning: 'Material.use_nodes' is expected to be removed in Blender 6.0
  m=bpy.data.materials.new(name);m.use_nodes=True;p=m.node_tree.nodes.get('Principled BSDF');p.inputs['Base Color'].default_value=col;p.inputs['Roughness'].default_value=.34;p.inputs['Metallic'].default_value=.3;p.inputs['Emission Color'].default_value=col;p.inputs['Emission Strength'].default_value=strength;MATS.append(m)

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/bin/bash -lc "python3 - <<'PY'
from pathlib import Path
p=Path('/tmp/alien-harvester-check/index.html')
s=p.read_text().replace('(-235,235,235*900/1600,-235*900/1600','(-220,220,220*900/1600,-220*900/1600').replace('camera.position.set(620,180,460)','camera.position.set(510,195,665)')
p.write_text(s)
PY" in /home/claude-agent/forge-build/forge-assets/jobs/alien-harvester-v1
 succeeded in 0ms:
diff --git a/jobs/alien-harvester-v1/build_alien-harvester.py b/jobs/alien-harvester-v1/build_alien-harvester.py
index 2fd1298f86ec659e97961d76bdbc9f692a926df6..57f69696c1bb60d37c2615501f86a75a47bda397
--- a/jobs/alien-harvester-v1/build_alien-harvester.py
+++ b/jobs/alien-harvester-v1/build_alien-harvester.py
@@ -161,7 +161,7 @@
 # Identical metal stock normal bakes share one image in the delivered GLB.
 MATS[3].node_tree.nodes['Normal'].image=MATS[1].node_tree.nodes['Normal'].image
 
-for name,col,strength in [('Lamps',(1,.15,.008,1),2.3),('Engines',(1,.22,.018,1),2.2)]:
+for name,col,strength in [('Lamps',(1,.18,.004,1),1.8),('Engines',(1,.24,.009,1),1.8)]:
     m=bpy.data.materials.new(name);m.use_nodes=True;p=m.node_tree.nodes.get('Principled BSDF');p.inputs['Base Color'].default_value=col;p.inputs['Roughness'].default_value=.34;p.inputs['Metallic'].default_value=.3;p.inputs['Emission Color'].default_value=col;p.inputs['Emission Strength'].default_value=strength;MATS.append(m)
 
 class Geo:
@@ -271,7 +271,11 @@
     for i in range(len(profile)-1):
         a,b=profile[i:i+2]
         if a[0]<=y<=b[0]:
-            t=(y-a[0])/(b[0]-a[0]);t=t*t*(3-2*t);return tuple(a[k]*(1-t)+b[k]*t for k in range(1,4))
+            # C1-continuous loft: no flattened shoulder or pinched ring at each
+            # control station, and the overlaid armour uses the identical skin.
+            prev=profile[max(0,i-1)];nxt=profile[min(len(profile)-1,i+2)]
+            span=b[0]-a[0];t=(y-a[0])/span
+            return tuple((2*t**3-3*t*t+1)*a[k]+(t**3-2*t*t+t)*span*(b[k]-prev[k])/(b[0]-prev[0])+(-2*t**3+3*t*t)*b[k]+(t**3-t*t)*span*(nxt[k]-a[k])/(nxt[0]-a[0]) for k in range(1,4))
     return profile[0][1:] if y<profile[0][0] else profile[-1][1:]
 def surface(y,t,offset=0):
     w,z,c=shape(y);return Vector(((w*1.05+offset)*math.sin(t),y,c+(z*1.30+offset)*math.cos(t)))
@@ -350,8 +354,10 @@
     if cy>0:raw=[(-L*.53,-H*.29),(-L*.36,H*.45),(L*.41,H*.42),(L*.52,H*.23),(L*.45,-H*.31),(L*.21,-H*.46),(-L*.35,-H*.43)]
     p2=catmull([(y,0,z) for y,z in raw+[raw[0],raw[1]]],4)[:-4]
     p2=p2[:-1] if (p2[0]-p2[-1]).length<.01 else p2
-    cx=shape(cy)[0]*1.05-.5
-    ringspec=[(.96,0), (1.08,2.3),(1.04,5.4),(.87,6.5),(.79,4.8),(.79,1.8)]
+    # Seat the back into the shell, but keep the entire opening in front of all
+    # overlapping armour, including the broad shoulder at the forward end.
+    cx=max(shape(cy-L*.58+i*L*1.16/32)[0] for i in range(33))*1.05+3.3
+    ringspec=[(.96,-8.0), (1.08,1.2),(1.04,5.4),(.87,6.5),(.79,4.8),(.79,1.8)]
     vs=[];n=len(p2)
     for scale,depth in ringspec:
         for p in p2:vs.append((sign*(cx+depth),cy+p.x*scale,cz+p.z*scale))
@@ -412,8 +418,8 @@
     for j in range(6):
         u=j/5;r=26.1-7*u;a=t+.085*u;pts.append((r*math.cos(a),-201+11*u,r*.89*math.sin(a)))
     tube(h,pts,[.90,1.05,.98,.81,.54,.23],2,9)
-    lit=[Vector(p)+Vector((-.16*math.cos(t),-.72,-.16*math.sin(t))) for p in pts]
-    tube(h,lit,[.29,.46,.44,.38,.24,.08],4,7)
+    lit=[Vector(p)+Vector((-.16*math.cos(t),-.98,-.16*math.sin(t))) for p in pts]
+    tube(h,lit,[.46,.65,.61,.47,.27,.08],4,8)
     # Dark rib continuing down the gullet from each luminous tooth.
     pts2=[]
     for j in range(6):
@@ -454,21 +460,23 @@
         theta=row*.43;base=surface(yy+row*3,theta,2.0);ht=(23 if row==0 else 18)*math.sin((i+1)/9*math.pi)**.5*(1+.10*math.sin(i*2.7))
         pts=catmull([base,base+Vector((row*2,3,ht*.4)),base+Vector((row*5,11,ht*.78)),base+Vector((row*7,21,ht))],5)
         rr=[3.6*(1-j/(len(pts)-1))**1.05+.035 for j in range(len(pts))]
-        tube(h,pts,rr,2,10,.66);ellipsoid(h,base,(5.3,7.8,2.8),0,18,8)
+        tube(h,pts,rr,2,12,ellipse=.66);ellipsoid(h,base,(5.3,7.8,2.8),0,18,8)
         ring(h,base+Vector((0,0,1.8)),(0,0,1),4.1,.6,2,24,7,1.25)
         tube(h,[base+Vector((row*2,0,1)),base+Vector((row*3,4,ht*.36)),base+Vector((row*5,11,ht*.7))],[.35,.28,.05],1,6)
 
 # Tail split vanes around the engine cluster: swept, no familiar human ship tail.
 for s in [-1,1]:
     for zz in [-14,15]:
-        pts=catmull([(s*28,132,zz),(s*31,163,zz*1.1),(s*26,189,zz*1.08),(s*21,211,zz*.9)],6)
-        rr=[6*(1-i/(len(pts)-1))**.8+.07 for i in range(len(pts))];tube(h,pts,rr,0,14,.58)
+        pts=catmull([(s*28,132,zz),(s*31,163,zz*1.1),(s*26,198,zz*1.08),(s*21,226,zz*.9)],6)
+        rr=[6*(1-i/(len(pts)-1))**.8+.07 for i in range(len(pts))];tube(h,pts,rr,0,14,ellipse=.58)
         tube(h,[p+Vector((0,0,2.2 if zz>0 else -2.2)) for p in pts[:-3]],[.30]*len(pts[:-3]),1,6)
 
 # Three main engines, bevelled ring exits, recessed glowing interiors.
 THRUSTERS=[]
-for i,(x,z,r,end) in enumerate([(-24,-7,12,196),(24,-7,12,196),(0,15,9,201)]):
-    tube(h,[(x,133,z),(x,147,z),(x,169,z),(x,end-4,z)],[r*.83,r*1.21,r*1.1,r],0,48)
+for i,(x,z,r,end) in enumerate([(-24,-7,12,214),(24,-7,12,214),(0,15,9,218)]):
+    # Nozzles extend clear of the tail skin, with an open casing and a closed
+    # emissive bowl. No hidden cap may cut across the glowing exit aperture.
+    tube(h,[(x,133,z),(x,147,z),(x,169,z),(x,end-4,z)],[r*.83,r*1.21,r*1.1,r],0,48,cap=False)
     ring(h,(x,151,z),(0,1,0),r*1.16,.9,2,48,8)
     # Exposed hot chamber between overlapping casing collars, visible from the side.
     for yy in [165,167.3,169.6,171.9]:ring(h,(x,yy,z),(0,1,0),r*1.115,.82,5,48,6)
@@ -497,7 +505,7 @@
 arms=[]
 for side in [-1,1]:
     for j,y in enumerate([-54,5,64]):
-        idx=len(arms)+1;root=Vector((side*(44-j*1.5),y+(24 if side<0 else 0),-29+j*.4));g=Geo('Arm_'+str(idx),root)
+        idx=len(arms)+1;root=Vector((side*(44-j*1.5),y+(34 if side<0 else 0),-29+j*.4));g=Geo('Arm_'+str(idx),root)
         ellipsoid(h,root+Vector((0,0,2)),(10.2,10.8,5.7),0,24,10)
         axis=Vector((side*.45,0,-.89)).normalized()
         ring(h,root+axis*1.0,axis,8.3,1.55,0,40,8)
@@ -507,6 +515,10 @@
         if side<0:dy=[v+5*math.sin(k*1.4+j) for k,v in enumerate(dy)]
         curl=[(6,dy[0],-12),(18-j,dy[1],-26),(30-j*4,dy[2],-39-j*2),(26-j*4,dy[3],-50-j*2),(16+j,dy[4],-54-j+(3 if side<0 else 0))]
         if j==2:curl=[(5,dy[0],-12),(13,dy[1],-23),(28,dy[2],-34),(28,dy[3],-48),(14,dy[4],-59)]
+        if side<0:
+            # A second, lower fan gives six distinct hanging silhouettes, with
+            # different tip heights rather than three mirrored hidden limbs.
+            curl=[(x*1.13,dy,dz*(1.24+.055*j)) for x,dy,dz in curl]
         points=[root]+[root+Vector((side*x,dy,dz)) for x,dy,dz in curl]
         pts=catmull(points,7);N=len(pts)
         rr=[6.5*(1-i/(N-1))+.95 for i in range(N)]
@@ -515,7 +527,7 @@
         for k in range(0,N-2,2):
             a,b=pts[k],pts[min(k+2,N-1)];mid=(a+b)/2;direction=(b-a).normalized();length=(b-a).length
             r=rr[k]+.4
-            tube(g,[a,a+direction*.5,b-direction*.55,b],[r*.91,r*1.08,r*1.02,r*.85],0,14,.88)
+            tube(g,[a,a+direction*.5,b-direction*.55,b],[r*.91,r*1.08,r*1.02,r*.85],0,14,ellipse=.88)
             ring(g,a+direction*.6,direction,r*1.02,.22,1,14,6,.88)
             # One narrow spinal rail down every link; no free-floating greebles.
             lateral=Vector((side,0,0));tube(g,[a+lateral*r*.89,mid+lateral*(r+ .15),b+lateral*r*.79],[.3,.34,.22],2,6)
@@ -544,7 +556,7 @@
             for bb in [-1.15,1.15]:
                 q=p+a*aa+b*bb+n*.35;tube(h,[q,q+n*.10],.12,1,7)
         # Small slit receiver: the ship has no windows or cockpit.
-        q=p+n*.4+b*(-.7);rounded_box(h,q,(.7,.14,.12),4,.045,B)
+        q=p+n*.4+b*(-.7);rounded_box(h,q,(.7,.14,.12),2,.045,B)
     for yy in [-150,-102,-63,-20,20,60,97,132]:
         theta=side*2.04;p=surface(yy,theta,1.5)
         n=Vector((math.sin(theta),0,math.cos(theta)));a=Vector((0,1,0));b=n.cross(a);B=Matrix(((a.x,b.x,n.x),(a.y,b.y,n.y),(a.z,b.z,n.z)))
@@ -585,7 +597,7 @@
 for ob in objs:
     select(ob);mod=ob.modifiers.new('Triangulated runtime surface','TRIANGULATE');bpy.ops.object.modifier_apply(modifier=mod.name)
     if ob==hull:
-        dec=ob.modifiers.new('Runtime surface reduction','DECIMATE');dec.ratio=min(.90,(182000-sum(len(a.data.polygons)*2 for a in objs[1:]))/len(ob.data.polygons));dec.use_collapse_triangulate=True;bpy.ops.object.modifier_apply(modifier=dec.name)
+        dec=ob.modifiers.new('Runtime surface reduction','DECIMATE');dec.ratio=min(.90,(178000-sum(len(a.data.polygons)*2 for a in objs[1:]))/len(ob.data.polygons));dec.use_collapse_triangulate=True;bpy.ops.object.modifier_apply(modifier=dec.name)
     if ob==hull:
         weighted=ob.modifiers.new('Area weighted armour shading','WEIGHTED_NORMAL');weighted.keep_sharp=True;weighted.mode='FACE_AREA_WITH_ANGLE';weighted.weight=35
         bpy.ops.object.modifier_apply(modifier=weighted.name)
@@ -601,7 +613,7 @@
     o=bpy.data.objects.new(name,None);sc.collection.objects.link(o);o.location=worldp(p);o.parent=parent;o.empty_display_size=2;return o
 for i,p in enumerate(THRUSTERS):empty('Thruster_'+str(i+1),p)
 empty('Camera_Chase',(0,315,110))
-empty('Light_Nav_L',(63,5,1))['color']=[1.0,0.0,0.0];empty('Light_Nav_R',(-63,5,1))['color']=[0.0,1.0,0.0];empty('Light_Beacon',(0,34,50))['color']=[1.0,.12,.0]
+empty('Light_Nav_L',(63,5,1))['color']=[1.0,0.0,0.0];empty('Light_Nav_R',(-63,5,1))['color']=[0.0,1.0,0.0];empty('Light_Beacon',surface(34,0,5))['color']=[1.0,.12,.0]
 asset=[o for o in sc.objects]
 bpy.context.view_layer.update()
 tri=sum(len(o.data.polygons) for o in objs)
@@ -619,10 +631,11 @@
 area('Cool fill',(-190,-50,70),480000,230,(.51,.68,1))
 area('Aft rim',(100,220,200),1250000,170,(.68,.8,1))
 area('Under bounce',(40,-80,-200),290000,220,(.64,.72,.9))
+area('Arm reflection',(220,-160,-120),650000,220,(.73,.82,1),target=(0,20,-40))
 camd=bpy.data.cameras.new('Render camera');cam=bpy.data.objects.new('Render camera',camd);sc.collection.objects.link(cam);sc.camera=cam;camd.clip_end=3000
 
 def camera(kind='hero'):
-    if kind=='hero':pos=(620,-460,180);target=(0,-6,-3);camd.type='ORTHO';camd.ortho_scale=470
+    if kind=='hero':pos=(510,-665,195);target=(0,-6,-3);camd.type='ORTHO';camd.ortho_scale=440
     elif kind=='side':pos=(650,0,24);target=(0,0,-7);camd.type='ORTHO';camd.ortho_scale=466
     elif kind=='rear':pos=(325,490,180);target=(0,25,-3);camd.type='ORTHO';camd.ortho_scale=450
     else:pos=(139,-234,54);target=(34,-150,0);camd.type='ORTHO';camd.ortho_scale=130
@@ -701,7 +714,7 @@
 'Materials: Paint, Titanium, HeatScorched, Recess, Lamps, Engines; Paint neutral texture × linear faction colour, default [0.10, 0.11, 0.10].',
 'Cycles GPU baked tiling sets: 1024² base-colour and Paint normal; shared 512² metal normals; 512² ORM; 8 m world-scale UV repeats; no unique hull atlas.',
 'Poly Haven CC0 IDs: metal_plate, metal_plate_02, rusty_metal_02; https://polyhaven.com/license ; https://polyhaven.com/a/metal_plate ; https://polyhaven.com/a/metal_plate_02 ; https://polyhaven.com/a/rusty_metal_02 .',
-'Reference differences: six larger harvesting arms as requested, bespoke overlapping armour layout and three recessed rear nozzles; no windows, lettering or logos.'
+'Reference differences: six harvesting arms as requested, cleaner broad armour plates, bespoke vent fairings and three recessed rear nozzles; no windows, lettering or logos.'
 ])+'\n')
 # Clay first: verifies actual built silhouettes before the material presentation.
 camera();clay=bpy.data.materials.new('QA clay');clay.diffuse_color=(.36,.36,.36,1);clay.use_nodes=True;clay.node_tree.nodes['Principled BSDF'].inputs['Roughness'].default_value=.72;clay.node_tree.nodes['Principled BSDF'].inputs['Base Color'].default_value=(.36,.36,.36,1)

codex
I’ve chosen a more frontal three-quarter view so the maw’s depth reads clearly, and added a soft fill light for the arm segments. The final clean rebuild is running with the nozzle and arm-spacing fixes included.
hook: PreToolUse
hook: PreToolUse
hook: PreToolUse
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hook: PreToolUse Completed
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hook: PreToolUse Completed
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exec
/bin/bash -lc 'ssh gex44 tail -n 8 /root/fal-author/alien-harvester-v1/build.log' in /home/claude-agent/forge-build/forge-assets/jobs/alien-harvester-v1
 succeeded in 516ms:
00:37.042  render           | Saved: '/root/fal-author/alien-harvester-v1/final.png'
HARVESTER 36.5 Render side.png
00:45.693  render           | Saved: '/root/fal-author/alien-harvester-v1/side.png'
HARVESTER 45.2 Render rear.png
00:50.819  render           | Saved: '/root/fal-author/alien-harvester-v1/rear.png'
HARVESTER 50.3 Render close.png
00:55.999  render           | Saved: '/root/fal-author/alien-harvester-v1/close.png'
HARVESTER 55.5 Render arms-test.png

hook: PreToolUse
hook: PreToolUse
hook: PreToolUse
hook: PreToolUse
hook: PreToolUse Completed
hook: PreToolUse Completed
hook: PreToolUse Completed
hook: PreToolUse Completed
exec
/bin/bash -lc "cat > /tmp/alien-harvester-review/assessment.md <<'EOF'
Author assessment after final independent visual review:
- Accepted: far-arm silhouette spacing in side view. Staggered far pivots by 34m and restored full longitudinal curl offset; kept longer lower far limbs.
- Accepted: surface pad emitter distracts at close range. Converted its tiny slit to dark metal; retained seated, bolted human-scale maintenance fitting as requested construction detail.
- Resolved before review: rear side vent collision, nose loft pinching, upper-body arch, raised spine sockets, far-claw visibility.
- Disagreed: far arm is physically shorter or fused. Arm_1..6 are separate complete meshes with tested root pivots; far arms are longer, and shorter visible lengths were occlusion in the hero view.
- Disagreed: all dark circular throats violate the reference. Sheet front view explicitly contains a dark centre encircled by amber teeth. Current geometry contains an emissive ring 22m inside the maw; the more frontal final camera exposes it.
- Disagreed: vent louvers cross. After moving the whole vent aperture clear of hull armour, all four louver transforms are identical and actual captures show parallel bars. Bright vertical radiator vanes behind them are separate inset layers.
- Additional author catch: continuous tail skin intersected the engine exits in rear view. Extended engine nozzles beyond the tail skin, opened cylinder casing ends and preserved closed emissive bowls.
- Presentation correction: final hero camera moved from (620,-460,180) to (510,-665,195), ortho 440, and added soft lower-front reflection light. Side, close and rear camera unchanged.
EOF" in /home/claude-agent/forge-build/forge-assets/jobs/alien-harvester-v1
 succeeded in 0ms:
diff --git a/jobs/alien-harvester-v1/build_alien-harvester.py b/jobs/alien-harvester-v1/build_alien-harvester.py
index 2fd1298f86ec659e97961d76bdbc9f692a926df6..57f69696c1bb60d37c2615501f86a75a47bda397
--- a/jobs/alien-harvester-v1/build_alien-harvester.py
+++ b/jobs/alien-harvester-v1/build_alien-harvester.py
@@ -161,7 +161,7 @@
 # Identical metal stock normal bakes share one image in the delivered GLB.
 MATS[3].node_tree.nodes['Normal'].image=MATS[1].node_tree.nodes['Normal'].image
 
-for name,col,strength in [('Lamps',(1,.15,.008,1),2.3),('Engines',(1,.22,.018,1),2.2)]:
+for name,col,strength in [('Lamps',(1,.18,.004,1),1.8),('Engines',(1,.24,.009,1),1.8)]:
     m=bpy.data.materials.new(name);m.use_nodes=True;p=m.node_tree.nodes.get('Principled BSDF');p.inputs['Base Color'].default_value=col;p.inputs['Roughness'].default_value=.34;p.inputs['Metallic'].default_value=.3;p.inputs['Emission Color'].default_value=col;p.inputs['Emission Strength'].default_value=strength;MATS.append(m)
 
 class Geo:
@@ -271,7 +271,11 @@
     for i in range(len(profile)-1):
         a,b=profile[i:i+2]
         if a[0]<=y<=b[0]:
-            t=(y-a[0])/(b[0]-a[0]);t=t*t*(3-2*t);return tuple(a[k]*(1-t)+b[k]*t for k in range(1,4))
+            # C1-continuous loft: no flattened shoulder or pinched ring at each
+            # control station, and the overlaid armour uses the identical skin.
+            prev=profile[max(0,i-1)];nxt=profile[min(len(profile)-1,i+2)]
+            span=b[0]-a[0];t=(y-a[0])/span
+            return tuple((2*t**3-3*t*t+1)*a[k]+(t**3-2*t*t+t)*span*(b[k]-prev[k])/(b[0]-prev[0])+(-2*t**3+3*t*t)*b[k]+(t**3-t*t)*span*(nxt[k]-a[k])/(nxt[0]-a[0]) for k in range(1,4))
     return profile[0][1:] if y<profile[0][0] else profile[-1][1:]
 def surface(y,t,offset=0):
     w,z,c=shape(y);return Vector(((w*1.05+offset)*math.sin(t),y,c+(z*1.30+offset)*math.cos(t)))
@@ -350,8 +354,10 @@
     if cy>0:raw=[(-L*.53,-H*.29),(-L*.36,H*.45),(L*.41,H*.42),(L*.52,H*.23),(L*.45,-H*.31),(L*.21,-H*.46),(-L*.35,-H*.43)]
     p2=catmull([(y,0,z) for y,z in raw+[raw[0],raw[1]]],4)[:-4]
     p2=p2[:-1] if (p2[0]-p2[-1]).length<.01 else p2
-    cx=shape(cy)[0]*1.05-.5
-    ringspec=[(.96,0), (1.08,2.3),(1.04,5.4),(.87,6.5),(.79,4.8),(.79,1.8)]
+    # Seat the back into the shell, but keep the entire opening in front of all
+    # overlapping armour, including the broad shoulder at the forward end.
+    cx=max(shape(cy-L*.58+i*L*1.16/32)[0] for i in range(33))*1.05+3.3
+    ringspec=[(.96,-8.0), (1.08,1.2),(1.04,5.4),(.87,6.5),(.79,4.8),(.79,1.8)]
     vs=[];n=len(p2)
     for scale,depth in ringspec:
         for p in p2:vs.append((sign*(cx+depth),cy+p.x*scale,cz+p.z*scale))
@@ -412,8 +418,8 @@
     for j in range(6):
         u=j/5;r=26.1-7*u;a=t+.085*u;pts.append((r*math.cos(a),-201+11*u,r*.89*math.sin(a)))
     tube(h,pts,[.90,1.05,.98,.81,.54,.23],2,9)
-    lit=[Vector(p)+Vector((-.16*math.cos(t),-.72,-.16*math.sin(t))) for p in pts]
-    tube(h,lit,[.29,.46,.44,.38,.24,.08],4,7)
+    lit=[Vector(p)+Vector((-.16*math.cos(t),-.98,-.16*math.sin(t))) for p in pts]
+    tube(h,lit,[.46,.65,.61,.47,.27,.08],4,8)
     # Dark rib continuing down the gullet from each luminous tooth.
     pts2=[]
     for j in range(6):
@@ -454,21 +460,23 @@
         theta=row*.43;base=surface(yy+row*3,theta,2.0);ht=(23 if row==0 else 18)*math.sin((i+1)/9*math.pi)**.5*(1+.10*math.sin(i*2.7))
         pts=catmull([base,base+Vector((row*2,3,ht*.4)),base+Vector((row*5,11,ht*.78)),base+Vector((row*7,21,ht))],5)
         rr=[3.6*(1-j/(len(pts)-1))**1.05+.035 for j in range(len(pts))]
-        tube(h,pts,rr,2,10,.66);ellipsoid(h,base,(5.3,7.8,2.8),0,18,8)
+        tube(h,pts,rr,2,12,ellipse=.66);ellipsoid(h,base,(5.3,7.8,2.8),0,18,8)
         ring(h,base+Vector((0,0,1.8)),(0,0,1),4.1,.6,2,24,7,1.25)
         tube(h,[base+Vector((row*2,0,1)),base+Vector((row*3,4,ht*.36)),base+Vector((row*5,11,ht*.7))],[.35,.28,.05],1,6)
 
 # Tail split vanes around the engine cluster: swept, no familiar human ship tail.
 for s in [-1,1]:
     for zz in [-14,15]:
-        pts=catmull([(s*28,132,zz),(s*31,163,zz*1.1),(s*26,189,zz*1.08),(s*21,211,zz*.9)],6)
-        rr=[6*(1-i/(len(pts)-1))**.8+.07 for i in range(len(pts))];tube(h,pts,rr,0,14,.58)
+        pts=catmull([(s*28,132,zz),(s*31,163,zz*1.1),(s*26,198,zz*1.08),(s*21,226,zz*.9)],6)
+        rr=[6*(1-i/(len(pts)-1))**.8+.07 for i in range(len(pts))];tube(h,pts,rr,0,14,ellipse=.58)
         tube(h,[p+Vector((0,0,2.2 if zz>0 else -2.2)) for p in pts[:-3]],[.30]*len(pts[:-3]),1,6)
 
 # Three main engines, bevelled ring exits, recessed glowing interiors.
 THRUSTERS=[]
-for i,(x,z,r,end) in enumerate([(-24,-7,12,196),(24,-7,12,196),(0,15,9,201)]):
-    tube(h,[(x,133,z),(x,147,z),(x,169,z),(x,end-4,z)],[r*.83,r*1.21,r*1.1,r],0,48)
+for i,(x,z,r,end) in enumerate([(-24,-7,12,214),(24,-7,12,214),(0,15,9,218)]):
+    # Nozzles extend clear of the tail skin, with an open casing and a closed
+    # emissive bowl. No hidden cap may cut across the glowing exit aperture.
+    tube(h,[(x,133,z),(x,147,z),(x,169,z),(x,end-4,z)],[r*.83,r*1.21,r*1.1,r],0,48,cap=False)
     ring(h,(x,151,z),(0,1,0),r*1.16,.9,2,48,8)
     # Exposed hot chamber between overlapping casing collars, visible from the side.
     for yy in [165,167.3,169.6,171.9]:ring(h,(x,yy,z),(0,1,0),r*1.115,.82,5,48,6)
@@ -497,7 +505,7 @@
 arms=[]
 for side in [-1,1]:
     for j,y in enumerate([-54,5,64]):
-        idx=len(arms)+1;root=Vector((side*(44-j*1.5),y+(24 if side<0 else 0),-29+j*.4));g=Geo('Arm_'+str(idx),root)
+        idx=len(arms)+1;root=Vector((side*(44-j*1.5),y+(34 if side<0 else 0),-29+j*.4));g=Geo('Arm_'+str(idx),root)
         ellipsoid(h,root+Vector((0,0,2)),(10.2,10.8,5.7),0,24,10)
         axis=Vector((side*.45,0,-.89)).normalized()
         ring(h,root+axis*1.0,axis,8.3,1.55,0,40,8)
@@ -507,6 +515,10 @@
         if side<0:dy=[v+5*math.sin(k*1.4+j) for k,v in enumerate(dy)]
         curl=[(6,dy[0],-12),(18-j,dy[1],-26),(30-j*4,dy[2],-39-j*2),(26-j*4,dy[3],-50-j*2),(16+j,dy[4],-54-j+(3 if side<0 else 0))]
         if j==2:curl=[(5,dy[0],-12),(13,dy[1],-23),(28,dy[2],-34),(28,dy[3],-48),(14,dy[4],-59)]
+        if side<0:
+            # A second, lower fan gives six distinct hanging silhouettes, with
+            # different tip heights rather than three mirrored hidden limbs.
+            curl=[(x*1.13,dy,dz*(1.24+.055*j)) for x,dy,dz in curl]
         points=[root]+[root+Vector((side*x,dy,dz)) for x,dy,dz in curl]
         pts=catmull(points,7);N=len(pts)
         rr=[6.5*(1-i/(N-1))+.95 for i in range(N)]
@@ -515,7 +527,7 @@
         for k in range(0,N-2,2):
             a,b=pts[k],pts[min(k+2,N-1)];mid=(a+b)/2;direction=(b-a).normalized();length=(b-a).length
             r=rr[k]+.4
-            tube(g,[a,a+direction*.5,b-direction*.55,b],[r*.91,r*1.08,r*1.02,r*.85],0,14,.88)
+            tube(g,[a,a+direction*.5,b-direction*.55,b],[r*.91,r*1.08,r*1.02,r*.85],0,14,ellipse=.88)
             ring(g,a+direction*.6,direction,r*1.02,.22,1,14,6,.88)
             # One narrow spinal rail down every link; no free-floating greebles.
             lateral=Vector((side,0,0));tube(g,[a+lateral*r*.89,mid+lateral*(r+ .15),b+lateral*r*.79],[.3,.34,.22],2,6)
@@ -544,7 +556,7 @@
             for bb in [-1.15,1.15]:
                 q=p+a*aa+b*bb+n*.35;tube(h,[q,q+n*.10],.12,1,7)
         # Small slit receiver: the ship has no windows or cockpit.
-        q=p+n*.4+b*(-.7);rounded_box(h,q,(.7,.14,.12),4,.045,B)
+        q=p+n*.4+b*(-.7);rounded_box(h,q,(.7,.14,.12),2,.045,B)
     for yy in [-150,-102,-63,-20,20,60,97,132]:
         theta=side*2.04;p=surface(yy,theta,1.5)
         n=Vector((math.sin(theta),0,math.cos(theta)));a=Vector((0,1,0));b=n.cross(a);B=Matrix(((a.x,b.x,n.x),(a.y,b.y,n.y),(a.z,b.z,n.z)))
@@ -585,7 +597,7 @@
 for ob in objs:
     select(ob);mod=ob.modifiers.new('Triangulated runtime surface','TRIANGULATE');bpy.ops.object.modifier_apply(modifier=mod.name)
     if ob==hull:
-        dec=ob.modifiers.new('Runtime surface reduction','DECIMATE');dec.ratio=min(.90,(182000-sum(len(a.data.polygons)*2 for a in objs[1:]))/len(ob.data.polygons));dec.use_collapse_triangulate=True;bpy.ops.object.modifier_apply(modifier=dec.name)
+        dec=ob.modifiers.new('Runtime surface reduction','DECIMATE');dec.ratio=min(.90,(178000-sum(len(a.data.polygons)*2 for a in objs[1:]))/len(ob.data.polygons));dec.use_collapse_triangulate=True;bpy.ops.object.modifier_apply(modifier=dec.name)
     if ob==hull:
         weighted=ob.modifiers.new('Area weighted armour shading','WEIGHTED_NORMAL');weighted.keep_sharp=True;weighted.mode='FACE_AREA_WITH_ANGLE';weighted.weight=35
         bpy.ops.object.modifier_apply(modifier=weighted.name)
@@ -601,7 +613,7 @@
     o=bpy.data.objects.new(name,None);sc.collection.objects.link(o);o.location=worldp(p);o.parent=parent;o.empty_display_size=2;return o
 for i,p in enumerate(THRUSTERS):empty('Thruster_'+str(i+1),p)
 empty('Camera_Chase',(0,315,110))
-empty('Light_Nav_L',(63,5,1))['color']=[1.0,0.0,0.0];empty('Light_Nav_R',(-63,5,1))['color']=[0.0,1.0,0.0];empty('Light_Beacon',(0,34,50))['color']=[1.0,.12,.0]
+empty('Light_Nav_L',(63,5,1))['color']=[1.0,0.0,0.0];empty('Light_Nav_R',(-63,5,1))['color']=[0.0,1.0,0.0];empty('Light_Beacon',surface(34,0,5))['color']=[1.0,.12,.0]
 asset=[o for o in sc.objects]
 bpy.context.view_layer.update()
 tri=sum(len(o.data.polygons) for o in objs)
@@ -619,10 +631,11 @@
 area('Cool fill',(-190,-50,70),480000,230,(.51,.68,1))
 area('Aft rim',(100,220,200),1250000,170,(.68,.8,1))
 area('Under bounce',(40,-80,-200),290000,220,(.64,.72,.9))
+area('Arm reflection',(220,-160,-120),650000,220,(.73,.82,1),target=(0,20,-40))
 camd=bpy.data.cameras.new('Render camera');cam=bpy.data.objects.new('Render camera',camd);sc.collection.objects.link(cam);sc.camera=cam;camd.clip_end=3000
 
 def camera(kind='hero'):
-    if kind=='hero':pos=(620,-460,180);target=(0,-6,-3);camd.type='ORTHO';camd.ortho_scale=470
+    if kind=='hero':pos=(510,-665,195);target=(0,-6,-3);camd.type='ORTHO';camd.ortho_scale=440
     elif kind=='side':pos=(650,0,24);target=(0,0,-7);camd.type='ORTHO';camd.ortho_scale=466
     elif kind=='rear':pos=(325,490,180);target=(0,25,-3);camd.type='ORTHO';camd.ortho_scale=450
     else:pos=(139,-234,54);target=(34,-150,0);camd.type='ORTHO';camd.ortho_scale=130
@@ -701,7 +714,7 @@
 'Materials: Paint, Titanium, HeatScorched, Recess, Lamps, Engines; Paint neutral texture × linear faction colour, default [0.10, 0.11, 0.10].',
 'Cycles GPU baked tiling sets: 1024² base-colour and Paint normal; shared 512² metal normals; 512² ORM; 8 m world-scale UV repeats; no unique hull atlas.',
 'Poly Haven CC0 IDs: metal_plate, metal_plate_02, rusty_metal_02; https://polyhaven.com/license ; https://polyhaven.com/a/metal_plate ; https://polyhaven.com/a/metal_plate_02 ; https://polyhaven.com/a/rusty_metal_02 .',
-'Reference differences: six larger harvesting arms as requested, bespoke overlapping armour layout and three recessed rear nozzles; no windows, lettering or logos.'
+'Reference differences: six harvesting arms as requested, cleaner broad armour plates, bespoke vent fairings and three recessed rear nozzles; no windows, lettering or logos.'
 ])+'\n')
 # Clay first: verifies actual built silhouettes before the material presentation.
 camera();clay=bpy.data.materials.new('QA clay');clay.diffuse_color=(.36,.36,.36,1);clay.use_nodes=True;clay.node_tree.nodes['Principled BSDF'].inputs['Roughness'].default_value=.72;clay.node_tree.nodes['Principled BSDF'].inputs['Base Color'].default_value=(.36,.36,.36,1)

 succeeded in 99024ms:
hook: PreToolUse
hook: PreToolUse Completed
diff --git a/jobs/alien-harvester-v1/build_alien-harvester.py b/jobs/alien-harvester-v1/build_alien-harvester.py
index 2fd1298f86ec659e97961d76bdbc9f692a926df6..57f69696c1bb60d37c2615501f86a75a47bda397
--- a/jobs/alien-harvester-v1/build_alien-harvester.py
+++ b/jobs/alien-harvester-v1/build_alien-harvester.py
@@ -161,7 +161,7 @@
 # Identical metal stock normal bakes share one image in the delivered GLB.
 MATS[3].node_tree.nodes['Normal'].image=MATS[1].node_tree.nodes['Normal'].image
 
-for name,col,strength in [('Lamps',(1,.15,.008,1),2.3),('Engines',(1,.22,.018,1),2.2)]:
+for name,col,strength in [('Lamps',(1,.18,.004,1),1.8),('Engines',(1,.24,.009,1),1.8)]:
     m=bpy.data.materials.new(name);m.use_nodes=True;p=m.node_tree.nodes.get('Principled BSDF');p.inputs['Base Color'].default_value=col;p.inputs['Roughness'].default_value=.34;p.inputs['Metallic'].default_value=.3;p.inputs['Emission Color'].default_value=col;p.inputs['Emission Strength'].default_value=strength;MATS.append(m)
 
 class Geo:
@@ -271,7 +271,11 @@
     for i in range(len(profile)-1):
         a,b=profile[i:i+2]
         if a[0]<=y<=b[0]:
-            t=(y-a[0])/(b[0]-a[0]);t=t*t*(3-2*t);return tuple(a[k]*(1-t)+b[k]*t for k in range(1,4))
+            # C1-continuous loft: no flattened shoulder or pinched ring at each
+            # control station, and the overlaid armour uses the identical skin.
+            prev=profile[max(0,i-1)];nxt=profile[min(len(profile)-1,i+2)]
+            span=b[0]-a[0];t=(y-a[0])/span
+            return tuple((2*t**3-3*t*t+1)*a[k]+(t**3-2*t*t+t)*span*(b[k]-prev[k])/(b[0]-prev[0])+(-2*t**3+3*t*t)*b[k]+(t**3-t*t)*span*(nxt[k]-a[k])/(nxt[0]-a[0]) for k in range(1,4))
     return profile[0][1:] if y<profile[0][0] else profile[-1][1:]
 def surface(y,t,offset=0):
     w,z,c=shape(y);return Vector(((w*1.05+offset)*math.sin(t),y,c+(z*1.30+offset)*math.cos(t)))
@@ -350,8 +354,10 @@
     if cy>0:raw=[(-L*.53,-H*.29),(-L*.36,H*.45),(L*.41,H*.42),(L*.52,H*.23),(L*.45,-H*.31),(L*.21,-H*.46),(-L*.35,-H*.43)]
     p2=catmull([(y,0,z) for y,z in raw+[raw[0],raw[1]]],4)[:-4]
     p2=p2[:-1] if (p2[0]-p2[-1]).length<.01 else p2
-    cx=shape(cy)[0]*1.05-.5
-    ringspec=[(.96,0), (1.08,2.3),(1.04,5.4),(.87,6.5),(.79,4.8),(.79,1.8)]
+    # Seat the back into the shell, but keep the entire opening in front of all
+    # overlapping armour, including the broad shoulder at the forward end.
+    cx=max(shape(cy-L*.58+i*L*1.16/32)[0] for i in range(33))*1.05+3.3
+    ringspec=[(.96,-8.0), (1.08,1.2),(1.04,5.4),(.87,6.5),(.79,4.8),(.79,1.8)]
     vs=[];n=len(p2)
     for scale,depth in ringspec:
         for p in p2:vs.append((sign*(cx+depth),cy+p.x*scale,cz+p.z*scale))
@@ -412,8 +418,8 @@
     for j in range(6):
         u=j/5;r=26.1-7*u;a=t+.085*u;pts.append((r*math.cos(a),-201+11*u,r*.89*math.sin(a)))
     tube(h,pts,[.90,1.05,.98,.81,.54,.23],2,9)
-    lit=[Vector(p)+Vector((-.16*math.cos(t),-.72,-.16*math.sin(t))) for p in pts]
-    tube(h,lit,[.29,.46,.44,.38,.24,.08],4,7)
+    lit=[Vector(p)+Vector((-.16*math.cos(t),-.98,-.16*math.sin(t))) for p in pts]
+    tube(h,lit,[.46,.65,.61,.47,.27,.08],4,8)
     # Dark rib continuing down the gullet from each luminous tooth.
     pts2=[]
     for j in range(6):
@@ -454,21 +460,23 @@
         theta=row*.43;base=surface(yy+row*3,theta,2.0);ht=(23 if row==0 else 18)*math.sin((i+1)/9*math.pi)**.5*(1+.10*math.sin(i*2.7))
         pts=catmull([base,base+Vector((row*2,3,ht*.4)),base+Vector((row*5,11,ht*.78)),base+Vector((row*7,21,ht))],5)
         rr=[3.6*(1-j/(len(pts)-1))**1.05+.035 for j in range(len(pts))]
-        tube(h,pts,rr,2,10,.66);ellipsoid(h,base,(5.3,7.8,2.8),0,18,8)
+        tube(h,pts,rr,2,12,ellipse=.66);ellipsoid(h,base,(5.3,7.8,2.8),0,18,8)
         ring(h,base+Vector((0,0,1.8)),(0,0,1),4.1,.6,2,24,7,1.25)
         tube(h,[base+Vector((row*2,0,1)),base+Vector((row*3,4,ht*.36)),base+Vector((row*5,11,ht*.7))],[.35,.28,.05],1,6)
 
 # Tail split vanes around the engine cluster: swept, no familiar human ship tail.
 for s in [-1,1]:
     for zz in [-14,15]:
-        pts=catmull([(s*28,132,zz),(s*31,163,zz*1.1),(s*26,189,zz*1.08),(s*21,211,zz*.9)],6)
-        rr=[6*(1-i/(len(pts)-1))**.8+.07 for i in range(len(pts))];tube(h,pts,rr,0,14,.58)
+        pts=catmull([(s*28,132,zz),(s*31,163,zz*1.1),(s*26,198,zz*1.08),(s*21,226,zz*.9)],6)
+        rr=[6*(1-i/(len(pts)-1))**.8+.07 for i in range(len(pts))];tube(h,pts,rr,0,14,ellipse=.58)
         tube(h,[p+Vector((0,0,2.2 if zz>0 else -2.2)) for p in pts[:-3]],[.30]*len(pts[:-3]),1,6)
 
 # Three main engines, bevelled ring exits, recessed glowing interiors.
 THRUSTERS=[]
-for i,(x,z,r,end) in enumerate([(-24,-7,12,196),(24,-7,12,196),(0,15,9,201)]):
-    tube(h,[(x,133,z),(x,147,z),(x,169,z),(x,end-4,z)],[r*.83,r*1.21,r*1.1,r],0,48)
+for i,(x,z,r,end) in enumerate([(-24,-7,12,214),(24,-7,12,214),(0,15,9,218)]):
+    # Nozzles extend clear of the tail skin, with an open casing and a closed
+    # emissive bowl. No hidden cap may cut across the glowing exit aperture.
+    tube(h,[(x,133,z),(x,147,z),(x,169,z),(x,end-4,z)],[r*.83,r*1.21,r*1.1,r],0,48,cap=False)
     ring(h,(x,151,z),(0,1,0),r*1.16,.9,2,48,8)
     # Exposed hot chamber between overlapping casing collars, visible from the side.
     for yy in [165,167.3,169.6,171.9]:ring(h,(x,yy,z),(0,1,0),r*1.115,.82,5,48,6)
@@ -497,7 +505,7 @@
 arms=[]
 for side in [-1,1]:
     for j,y in enumerate([-54,5,64]):
-        idx=len(arms)+1;root=Vector((side*(44-j*1.5),y+(24 if side<0 else 0),-29+j*.4));g=Geo('Arm_'+str(idx),root)
+        idx=len(arms)+1;root=Vector((side*(44-j*1.5),y+(34 if side<0 else 0),-29+j*.4));g=Geo('Arm_'+str(idx),root)
         ellipsoid(h,root+Vector((0,0,2)),(10.2,10.8,5.7),0,24,10)
         axis=Vector((side*.45,0,-.89)).normalized()
         ring(h,root+axis*1.0,axis,8.3,1.55,0,40,8)
@@ -507,6 +515,10 @@
         if side<0:dy=[v+5*math.sin(k*1.4+j) for k,v in enumerate(dy)]
         curl=[(6,dy[0],-12),(18-j,dy[1],-26),(30-j*4,dy[2],-39-j*2),(26-j*4,dy[3],-50-j*2),(16+j,dy[4],-54-j+(3 if side<0 else 0))]
         if j==2:curl=[(5,dy[0],-12),(13,dy[1],-23),(28,dy[2],-34),(28,dy[3],-48),(14,dy[4],-59)]
+        if side<0:
+            # A second, lower fan gives six distinct hanging silhouettes, with
+            # different tip heights rather than three mirrored hidden limbs.
+            curl=[(x*1.13,dy,dz*(1.24+.055*j)) for x,dy,dz in curl]
         points=[root]+[root+Vector((side*x,dy,dz)) for x,dy,dz in curl]
         pts=catmull(points,7);N=len(pts)
         rr=[6.5*(1-i/(N-1))+.95 for i in range(N)]
@@ -515,7 +527,7 @@
         for k in range(0,N-2,2):
             a,b=pts[k],pts[min(k+2,N-1)];mid=(a+b)/2;direction=(b-a).normalized();length=(b-a).length
             r=rr[k]+.4
-            tube(g,[a,a+direction*.5,b-direction*.55,b],[r*.91,r*1.08,r*1.02,r*.85],0,14,.88)
+            tube(g,[a,a+direction*.5,b-direction*.55,b],[r*.91,r*1.08,r*1.02,r*.85],0,14,ellipse=.88)
             ring(g,a+direction*.6,direction,r*1.02,.22,1,14,6,.88)
             # One narrow spinal rail down every link; no free-floating greebles.
             lateral=Vector((side,0,0));tube(g,[a+lateral*r*.89,mid+lateral*(r+ .15),b+lateral*r*.79],[.3,.34,.22],2,6)
@@ -544,7 +556,7 @@
             for bb in [-1.15,1.15]:
                 q=p+a*aa+b*bb+n*.35;tube(h,[q,q+n*.10],.12,1,7)
         # Small slit receiver: the ship has no windows or cockpit.
-        q=p+n*.4+b*(-.7);rounded_box(h,q,(.7,.14,.12),4,.045,B)
+        q=p+n*.4+b*(-.7);rounded_box(h,q,(.7,.14,.12),2,.045,B)
     for yy in [-150,-102,-63,-20,20,60,97,132]:
         theta=side*2.04;p=surface(yy,theta,1.5)
         n=Vector((math.sin(theta),0,math.cos(theta)));a=Vector((0,1,0));b=n.cross(a);B=Matrix(((a.x,b.x,n.x),(a.y,b.y,n.y),(a.z,b.z,n.z)))
@@ -585,7 +597,7 @@
 for ob in objs:
     select(ob);mod=ob.modifiers.new('Triangulated runtime surface','TRIANGULATE');bpy.ops.object.modifier_apply(modifier=mod.name)
     if ob==hull:
-        dec=ob.modifiers.new('Runtime surface reduction','DECIMATE');dec.ratio=min(.90,(182000-sum(len(a.data.polygons)*2 for a in objs[1:]))/len(ob.data.polygons));dec.use_collapse_triangulate=True;bpy.ops.object.modifier_apply(modifier=dec.name)
+        dec=ob.modifiers.new('Runtime surface reduction','DECIMATE');dec.ratio=min(.90,(178000-sum(len(a.data.polygons)*2 for a in objs[1:]))/len(ob.data.polygons));dec.use_collapse_triangulate=True;bpy.ops.object.modifier_apply(modifier=dec.name)
     if ob==hull:
         weighted=ob.modifiers.new('Area weighted armour shading','WEIGHTED_NORMAL');weighted.keep_sharp=True;weighted.mode='FACE_AREA_WITH_ANGLE';weighted.weight=35
         bpy.ops.object.modifier_apply(modifier=weighted.name)
@@ -601,7 +613,7 @@
     o=bpy.data.objects.new(name,None);sc.collection.objects.link(o);o.location=worldp(p);o.parent=parent;o.empty_display_size=2;return o
 for i,p in enumerate(THRUSTERS):empty('Thruster_'+str(i+1),p)
 empty('Camera_Chase',(0,315,110))
-empty('Light_Nav_L',(63,5,1))['color']=[1.0,0.0,0.0];empty('Light_Nav_R',(-63,5,1))['color']=[0.0,1.0,0.0];empty('Light_Beacon',(0,34,50))['color']=[1.0,.12,.0]
+empty('Light_Nav_L',(63,5,1))['color']=[1.0,0.0,0.0];empty('Light_Nav_R',(-63,5,1))['color']=[0.0,1.0,0.0];empty('Light_Beacon',surface(34,0,5))['color']=[1.0,.12,.0]
 asset=[o for o in sc.objects]
 bpy.context.view_layer.update()
 tri=sum(len(o.data.polygons) for o in objs)
@@ -619,10 +631,11 @@
 area('Cool fill',(-190,-50,70),480000,230,(.51,.68,1))
 area('Aft rim',(100,220,200),1250000,170,(.68,.8,1))
 area('Under bounce',(40,-80,-200),290000,220,(.64,.72,.9))
+area('Arm reflection',(220,-160,-120),650000,220,(.73,.82,1),target=(0,20,-40))
 camd=bpy.data.cameras.new('Render camera');cam=bpy.data.objects.new('Render camera',camd);sc.collection.objects.link(cam);sc.camera=cam;camd.clip_end=3000
 
 def camera(kind='hero'):
-    if kind=='hero':pos=(620,-460,180);target=(0,-6,-3);camd.type='ORTHO';camd.ortho_scale=470
+    if kind=='hero':pos=(510,-665,195);target=(0,-6,-3);camd.type='ORTHO';camd.ortho_scale=440
     elif kind=='side':pos=(650,0,24);target=(0,0,-7);camd.type='ORTHO';camd.ortho_scale=466
     elif kind=='rear':pos=(325,490,180);target=(0,25,-3);camd.type='ORTHO';camd.ortho_scale=450
     else:pos=(139,-234,54);target=(34,-150,0);camd.type='ORTHO';camd.ortho_scale=130
@@ -701,7 +714,7 @@
 'Materials: Paint, Titanium, HeatScorched, Recess, Lamps, Engines; Paint neutral texture × linear faction colour, default [0.10, 0.11, 0.10].',
 'Cycles GPU baked tiling sets: 1024² base-colour and Paint normal; shared 512² metal normals; 512² ORM; 8 m world-scale UV repeats; no unique hull atlas.',
 'Poly Haven CC0 IDs: metal_plate, metal_plate_02, rusty_metal_02; https://polyhaven.com/license ; https://polyhaven.com/a/metal_plate ; https://polyhaven.com/a/metal_plate_02 ; https://polyhaven.com/a/rusty_metal_02 .',
-'Reference differences: six larger harvesting arms as requested, bespoke overlapping armour layout and three recessed rear nozzles; no windows, lettering or logos.'
+'Reference differences: six harvesting arms as requested, cleaner broad armour plates, bespoke vent fairings and three recessed rear nozzles; no windows, lettering or logos.'
 ])+'\n')
 # Clay first: verifies actual built silhouettes before the material presentation.
 camera();clay=bpy.data.materials.new('QA clay');clay.diffuse_color=(.36,.36,.36,1);clay.use_nodes=True;clay.node_tree.nodes['Principled BSDF'].inputs['Roughness'].default_value=.72;clay.node_tree.nodes['Principled BSDF'].inputs['Base Color'].default_value=(.36,.36,.36,1)

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exec
/bin/bash -lc 'scp gex44:/root/fal-author/alien-harvester-v1/alien-harvester.glb gex44:/root/fal-author/alien-harvester-v1/final.png gex44:/root/fal-author/alien-harvester-v1/side.png gex44:/root/fal-author/alien-harvester-v1/clay.png gex44:/root/fal-author/alien-harvester-v1/paints.png gex44:/root/fal-author/alien-harvester-v1/nodes.json gex44:/root/fal-author/alien-harvester-v1/NOTES.md gex44:/root/fal-author/alien-harvester-v1/close.png gex44:/root/fal-author/alien-harvester-v1/arms-test.png gex44:/root/fal-author/alien-harvester-v1/rear.png .' in /home/claude-agent/forge-build/forge-assets/jobs/alien-harvester-v1
diff --git a/jobs/alien-harvester-v1/build_alien-harvester.py b/jobs/alien-harvester-v1/build_alien-harvester.py
index 2fd1298f86ec659e97961d76bdbc9f692a926df6..57f69696c1bb60d37c2615501f86a75a47bda397
--- a/jobs/alien-harvester-v1/build_alien-harvester.py
+++ b/jobs/alien-harvester-v1/build_alien-harvester.py
@@ -161,7 +161,7 @@
 # Identical metal stock normal bakes share one image in the delivered GLB.
 MATS[3].node_tree.nodes['Normal'].image=MATS[1].node_tree.nodes['Normal'].image
 
-for name,col,strength in [('Lamps',(1,.15,.008,1),2.3),('Engines',(1,.22,.018,1),2.2)]:
+for name,col,strength in [('Lamps',(1,.18,.004,1),1.8),('Engines',(1,.24,.009,1),1.8)]:
     m=bpy.data.materials.new(name);m.use_nodes=True;p=m.node_tree.nodes.get('Principled BSDF');p.inputs['Base Color'].default_value=col;p.inputs['Roughness'].default_value=.34;p.inputs['Metallic'].default_value=.3;p.inputs['Emission Color'].default_value=col;p.inputs['Emission Strength'].default_value=strength;MATS.append(m)
 
 class Geo:
@@ -271,7 +271,11 @@
     for i in range(len(profile)-1):
         a,b=profile[i:i+2]
         if a[0]<=y<=b[0]:
-            t=(y-a[0])/(b[0]-a[0]);t=t*t*(3-2*t);return tuple(a[k]*(1-t)+b[k]*t for k in range(1,4))
+            # C1-continuous loft: no flattened shoulder or pinched ring at each
+            # control station, and the overlaid armour uses the identical skin.
+            prev=profile[max(0,i-1)];nxt=profile[min(len(profile)-1,i+2)]
+            span=b[0]-a[0];t=(y-a[0])/span
+            return tuple((2*t**3-3*t*t+1)*a[k]+(t**3-2*t*t+t)*span*(b[k]-prev[k])/(b[0]-prev[0])+(-2*t**3+3*t*t)*b[k]+(t**3-t*t)*span*(nxt[k]-a[k])/(nxt[0]-a[0]) for k in range(1,4))
     return profile[0][1:] if y<profile[0][0] else profile[-1][1:]
 def surface(y,t,offset=0):
     w,z,c=shape(y);return Vector(((w*1.05+offset)*math.sin(t),y,c+(z*1.30+offset)*math.cos(t)))
@@ -350,8 +354,10 @@
     if cy>0:raw=[(-L*.53,-H*.29),(-L*.36,H*.45),(L*.41,H*.42),(L*.52,H*.23),(L*.45,-H*.31),(L*.21,-H*.46),(-L*.35,-H*.43)]
     p2=catmull([(y,0,z) for y,z in raw+[raw[0],raw[1]]],4)[:-4]
     p2=p2[:-1] if (p2[0]-p2[-1]).length<.01 else p2
-    cx=shape(cy)[0]*1.05-.5
-    ringspec=[(.96,0), (1.08,2.3),(1.04,5.4),(.87,6.5),(.79,4.8),(.79,1.8)]
+    # Seat the back into the shell, but keep the entire opening in front of all
+    # overlapping armour, including the broad shoulder at the forward end.
+    cx=max(shape(cy-L*.58+i*L*1.16/32)[0] for i in range(33))*1.05+3.3
+    ringspec=[(.96,-8.0), (1.08,1.2),(1.04,5.4),(.87,6.5),(.79,4.8),(.79,1.8)]
     vs=[];n=len(p2)
     for scale,depth in ringspec:
         for p in p2:vs.append((sign*(cx+depth),cy+p.x*scale,cz+p.z*scale))
@@ -412,8 +418,8 @@
     for j in range(6):
         u=j/5;r=26.1-7*u;a=t+.085*u;pts.append((r*math.cos(a),-201+11*u,r*.89*math.sin(a)))
     tube(h,pts,[.90,1.05,.98,.81,.54,.23],2,9)
-    lit=[Vector(p)+Vector((-.16*math.cos(t),-.72,-.16*math.sin(t))) for p in pts]
-    tube(h,lit,[.29,.46,.44,.38,.24,.08],4,7)
+    lit=[Vector(p)+Vector((-.16*math.cos(t),-.98,-.16*math.sin(t))) for p in pts]
+    tube(h,lit,[.46,.65,.61,.47,.27,.08],4,8)
     # Dark rib continuing down the gullet from each luminous tooth.
     pts2=[]
     for j in range(6):
@@ -454,21 +460,23 @@
         theta=row*.43;base=surface(yy+row*3,theta,2.0);ht=(23 if row==0 else 18)*math.sin((i+1)/9*math.pi)**.5*(1+.10*math.sin(i*2.7))
         pts=catmull([base,base+Vector((row*2,3,ht*.4)),base+Vector((row*5,11,ht*.78)),base+Vector((row*7,21,ht))],5)
         rr=[3.6*(1-j/(len(pts)-1))**1.05+.035 for j in range(len(pts))]
-        tube(h,pts,rr,2,10,.66);ellipsoid(h,base,(5.3,7.8,2.8),0,18,8)
+        tube(h,pts,rr,2,12,ellipse=.66);ellipsoid(h,base,(5.3,7.8,2.8),0,18,8)
         ring(h,base+Vector((0,0,1.8)),(0,0,1),4.1,.6,2,24,7,1.25)
         tube(h,[base+Vector((row*2,0,1)),base+Vector((row*3,4,ht*.36)),base+Vector((row*5,11,ht*.7))],[.35,.28,.05],1,6)
 
 # Tail split vanes around the engine cluster: swept, no familiar human ship tail.
 for s in [-1,1]:
     for zz in [-14,15]:
-        pts=catmull([(s*28,132,zz),(s*31,163,zz*1.1),(s*26,189,zz*1.08),(s*21,211,zz*.9)],6)
-        rr=[6*(1-i/(len(pts)-1))**.8+.07 for i in range(len(pts))];tube(h,pts,rr,0,14,.58)
+        pts=catmull([(s*28,132,zz),(s*31,163,zz*1.1),(s*26,198,zz*1.08),(s*21,226,zz*.9)],6)
+        rr=[6*(1-i/(len(pts)-1))**.8+.07 for i in range(len(pts))];tube(h,pts,rr,0,14,ellipse=.58)
         tube(h,[p+Vector((0,0,2.2 if zz>0 else -2.2)) for p in pts[:-3]],[.30]*len(pts[:-3]),1,6)
 
 # Three main engines, bevelled ring exits, recessed glowing interiors.
 THRUSTERS=[]
-for i,(x,z,r,end) in enumerate([(-24,-7,12,196),(24,-7,12,196),(0,15,9,201)]):
-    tube(h,[(x,133,z),(x,147,z),(x,169,z),(x,end-4,z)],[r*.83,r*1.21,r*1.1,r],0,48)
+for i,(x,z,r,end) in enumerate([(-24,-7,12,214),(24,-7,12,214),(0,15,9,218)]):
+    # Nozzles extend clear of the tail skin, with an open casing and a closed
+    # emissive bowl. No hidden cap may cut across the glowing exit aperture.
+    tube(h,[(x,133,z),(x,147,z),(x,169,z),(x,end-4,z)],[r*.83,r*1.21,r*1.1,r],0,48,cap=False)
     ring(h,(x,151,z),(0,1,0),r*1.16,.9,2,48,8)
     # Exposed hot chamber between overlapping casing collars, visible from the side.
     for yy in [165,167.3,169.6,171.9]:ring(h,(x,yy,z),(0,1,0),r*1.115,.82,5,48,6)
@@ -497,7 +505,7 @@
 arms=[]
 for side in [-1,1]:
     for j,y in enumerate([-54,5,64]):
-        idx=len(arms)+1;root=Vector((side*(44-j*1.5),y+(24 if side<0 else 0),-29+j*.4));g=Geo('Arm_'+str(idx),root)
+        idx=len(arms)+1;root=Vector((side*(44-j*1.5),y+(34 if side<0 else 0),-29+j*.4));g=Geo('Arm_'+str(idx),root)
         ellipsoid(h,root+Vector((0,0,2)),(10.2,10.8,5.7),0,24,10)
         axis=Vector((side*.45,0,-.89)).normalized()
         ring(h,root+axis*1.0,axis,8.3,1.55,0,40,8)
@@ -507,6 +515,10 @@
         if side<0:dy=[v+5*math.sin(k*1.4+j) for k,v in enumerate(dy)]
         curl=[(6,dy[0],-12),(18-j,dy[1],-26),(30-j*4,dy[2],-39-j*2),(26-j*4,dy[3],-50-j*2),(16+j,dy[4],-54-j+(3 if side<0 else 0))]
         if j==2:curl=[(5,dy[0],-12),(13,dy[1],-23),(28,dy[2],-34),(28,dy[3],-48),(14,dy[4],-59)]
+        if side<0:
+            # A second, lower fan gives six distinct hanging silhouettes, with
+            # different tip heights rather than three mirrored hidden limbs.
+            curl=[(x*1.13,dy,dz*(1.24+.055*j)) for x,dy,dz in curl]
         points=[root]+[root+Vector((side*x,dy,dz)) for x,dy,dz in curl]
         pts=catmull(points,7);N=len(pts)
         rr=[6.5*(1-i/(N-1))+.95 for i in range(N)]
@@ -515,7 +527,7 @@
         for k in range(0,N-2,2):
             a,b=pts[k],pts[min(k+2,N-1)];mid=(a+b)/2;direction=(b-a).normalized();length=(b-a).length
             r=rr[k]+.4
-            tube(g,[a,a+direction*.5,b-direction*.55,b],[r*.91,r*1.08,r*1.02,r*.85],0,14,.88)
+            tube(g,[a,a+direction*.5,b-direction*.55,b],[r*.91,r*1.08,r*1.02,r*.85],0,14,ellipse=.88)
             ring(g,a+direction*.6,direction,r*1.02,.22,1,14,6,.88)
             # One narrow spinal rail down every link; no free-floating greebles.
             lateral=Vector((side,0,0));tube(g,[a+lateral*r*.89,mid+lateral*(r+ .15),b+lateral*r*.79],[.3,.34,.22],2,6)
@@ -544,7 +556,7 @@
             for bb in [-1.15,1.15]:
                 q=p+a*aa+b*bb+n*.35;tube(h,[q,q+n*.10],.12,1,7)
         # Small slit receiver: the ship has no windows or cockpit.
-        q=p+n*.4+b*(-.7);rounded_box(h,q,(.7,.14,.12),4,.045,B)
+        q=p+n*.4+b*(-.7);rounded_box(h,q,(.7,.14,.12),2,.045,B)
     for yy in [-150,-102,-63,-20,20,60,97,132]:
         theta=side*2.04;p=surface(yy,theta,1.5)
         n=Vector((math.sin(theta),0,math.cos(theta)));a=Vector((0,1,0));b=n.cross(a);B=Matrix(((a.x,b.x,n.x),(a.y,b.y,n.y),(a.z,b.z,n.z)))
@@ -585,7 +597,7 @@
 for ob in objs:
     select(ob);mod=ob.modifiers.new('Triangulated runtime surface','TRIANGULATE');bpy.ops.object.modifier_apply(modifier=mod.name)
     if ob==hull:
-        dec=ob.modifiers.new('Runtime surface reduction','DECIMATE');dec.ratio=min(.90,(182000-sum(len(a.data.polygons)*2 for a in objs[1:]))/len(ob.data.polygons));dec.use_collapse_triangulate=True;bpy.ops.object.modifier_apply(modifier=dec.name)
+        dec=ob.modifiers.new('Runtime surface reduction','DECIMATE');dec.ratio=min(.90,(178000-sum(len(a.data.polygons)*2 for a in objs[1:]))/len(ob.data.polygons));dec.use_collapse_triangulate=True;bpy.ops.object.modifier_apply(modifier=dec.name)
     if ob==hull:
         weighted=ob.modifiers.new('Area weighted armour shading','WEIGHTED_NORMAL');weighted.keep_sharp=True;weighted.mode='FACE_AREA_WITH_ANGLE';weighted.weight=35
         bpy.ops.object.modifier_apply(modifier=weighted.name)
@@ -601,7 +613,7 @@
     o=bpy.data.objects.new(name,None);sc.collection.objects.link(o);o.location=worldp(p);o.parent=parent;o.empty_display_size=2;return o
 for i,p in enumerate(THRUSTERS):empty('Thruster_'+str(i+1),p)
 empty('Camera_Chase',(0,315,110))
-empty('Light_Nav_L',(63,5,1))['color']=[1.0,0.0,0.0];empty('Light_Nav_R',(-63,5,1))['color']=[0.0,1.0,0.0];empty('Light_Beacon',(0,34,50))['color']=[1.0,.12,.0]
+empty('Light_Nav_L',(63,5,1))['color']=[1.0,0.0,0.0];empty('Light_Nav_R',(-63,5,1))['color']=[0.0,1.0,0.0];empty('Light_Beacon',surface(34,0,5))['color']=[1.0,.12,.0]
 asset=[o for o in sc.objects]
 bpy.context.view_layer.update()
 tri=sum(len(o.data.polygons) for o in objs)
@@ -619,10 +631,11 @@
 area('Cool fill',(-190,-50,70),480000,230,(.51,.68,1))
 area('Aft rim',(100,220,200),1250000,170,(.68,.8,1))
 area('Under bounce',(40,-80,-200),290000,220,(.64,.72,.9))
+area('Arm reflection',(220,-160,-120),650000,220,(.73,.82,1),target=(0,20,-40))
 camd=bpy.data.cameras.new('Render camera');cam=bpy.data.objects.new('Render camera',camd);sc.collection.objects.link(cam);sc.camera=cam;camd.clip_end=3000
 
 def camera(kind='hero'):
-    if kind=='hero':pos=(620,-460,180);target=(0,-6,-3);camd.type='ORTHO';camd.ortho_scale=470
+    if kind=='hero':pos=(510,-665,195);target=(0,-6,-3);camd.type='ORTHO';camd.ortho_scale=440
     elif kind=='side':pos=(650,0,24);target=(0,0,-7);camd.type='ORTHO';camd.ortho_scale=466
     elif kind=='rear':pos=(325,490,180);target=(0,25,-3);camd.type='ORTHO';camd.ortho_scale=450
     else:pos=(139,-234,54);target=(34,-150,0);camd.type='ORTHO';camd.ortho_scale=130
@@ -701,7 +714,7 @@
 'Materials: Paint, Titanium, HeatScorched, Recess, Lamps, Engines; Paint neutral texture × linear faction colour, default [0.10, 0.11, 0.10].',
 'Cycles GPU baked tiling sets: 1024² base-colour and Paint normal; shared 512² metal normals; 512² ORM; 8 m world-scale UV repeats; no unique hull atlas.',
 'Poly Haven CC0 IDs: metal_plate, metal_plate_02, rusty_metal_02; https://polyhaven.com/license ; https://polyhaven.com/a/metal_plate ; https://polyhaven.com/a/metal_plate_02 ; https://polyhaven.com/a/rusty_metal_02 .',
-'Reference differences: six larger harvesting arms as requested, bespoke overlapping armour layout and three recessed rear nozzles; no windows, lettering or logos.'
+'Reference differences: six harvesting arms as requested, cleaner broad armour plates, bespoke vent fairings and three recessed rear nozzles; no windows, lettering or logos.'
 ])+'\n')
 # Clay first: verifies actual built silhouettes before the material presentation.
 camera();clay=bpy.data.materials.new('QA clay');clay.diffuse_color=(.36,.36,.36,1);clay.use_nodes=True;clay.node_tree.nodes['Principled BSDF'].inputs['Roughness'].default_value=.72;clay.node_tree.nodes['Principled BSDF'].inputs['Base Color'].default_value=(.36,.36,.36,1)

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/bin/bash -lc 'cp alien-harvester.glb /tmp/alien-harvester-check/alien-harvester.glb
node /tmp/alien-harvester-check/check.cjs > /tmp/alien-harvester-check/browser-final.log 2>&1' in /home/claude-agent/forge-build/forge-assets/jobs/alien-harvester-v1
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/bin/bash -lc 'python3 /tmp/alien-harvester-check/contract.py > /tmp/alien-harvester-check/contract-final.json
python3 /home/claude-agent/.agents/skills/blender-game-assets/scripts/audit_glb.py alien-harvester.glb --strict > /tmp/alien-harvester-check/audit-final.json' in /home/claude-agent/forge-build/forge-assets/jobs/alien-harvester-v1
exec
/bin/bash -lc 'sha256sum build_alien-harvester.py alien-harvester.glb
ssh gex44 sha256sum /root/fal-author/alien-harvester-v1/build_alien-harvester.py /root/fal-author/alien-harvester-v1/alien-harvester.glb' in /home/claude-agent/forge-build/forge-assets/jobs/alien-harvester-v1
exec
/bin/bash -lc "node - <<'JS'
const fs=require('fs'),v=require('/tmp/alien-harvester-check/node_modules/gltf-validator');
v.validateBytes(new Uint8Array(fs.readFileSync('alien-harvester.glb')),{uri:'alien-harvester.glb',maxIssues:1000}).then(r=>{fs.writeFileSync('/tmp/alien-harvester-check/validator-final.json',JSON.stringify(r,null,2));console.log(JSON.stringify({errors:r.issues.numErrors,warnings:r.issues.numWarnings,infos:r.issues.numInfos}));});
JS" in /home/claude-agent/forge-build/forge-assets/jobs/alien-harvester-v1
 succeeded in 710ms:
1cd67024a37030bdcbf5b9bc2223e92f3b1e9cd1b44a6a199a0c91daef8848c2  build_alien-harvester.py
996072c3ba4f391eff5f918978cd4c826ae452a97f3a28ba698e8845c06c1f7a  alien-harvester.glb
1cd67024a37030bdcbf5b9bc2223e92f3b1e9cd1b44a6a199a0c91daef8848c2  /root/fal-author/alien-harvester-v1/build_alien-harvester.py
996072c3ba4f391eff5f918978cd4c826ae452a97f3a28ba698e8845c06c1f7a  /root/fal-author/alien-harvester-v1/alien-harvester.glb

 succeeded in 2760ms:
{"errors":0,"warnings":0,"infos":8}

 succeeded in 4663ms:
diff --git a/jobs/alien-harvester-v1/build_alien-harvester.py b/jobs/alien-harvester-v1/build_alien-harvester.py
index 2fd1298f86ec659e97961d76bdbc9f692a926df6..57f69696c1bb60d37c2615501f86a75a47bda397
--- a/jobs/alien-harvester-v1/build_alien-harvester.py
+++ b/jobs/alien-harvester-v1/build_alien-harvester.py
@@ -161,7 +161,7 @@
 # Identical metal stock normal bakes share one image in the delivered GLB.
 MATS[3].node_tree.nodes['Normal'].image=MATS[1].node_tree.nodes['Normal'].image
 
-for name,col,strength in [('Lamps',(1,.15,.008,1),2.3),('Engines',(1,.22,.018,1),2.2)]:
+for name,col,strength in [('Lamps',(1,.18,.004,1),1.8),('Engines',(1,.24,.009,1),1.8)]:
     m=bpy.data.materials.new(name);m.use_nodes=True;p=m.node_tree.nodes.get('Principled BSDF');p.inputs['Base Color'].default_value=col;p.inputs['Roughness'].default_value=.34;p.inputs['Metallic'].default_value=.3;p.inputs['Emission Color'].default_value=col;p.inputs['Emission Strength'].default_value=strength;MATS.append(m)
 
 class Geo:
@@ -271,7 +271,11 @@
     for i in range(len(profile)-1):
         a,b=profile[i:i+2]
         if a[0]<=y<=b[0]:
-            t=(y-a[0])/(b[0]-a[0]);t=t*t*(3-2*t);return tuple(a[k]*(1-t)+b[k]*t for k in range(1,4))
+            # C1-continuous loft: no flattened shoulder or pinched ring at each
+            # control station, and the overlaid armour uses the identical skin.
+            prev=profile[max(0,i-1)];nxt=profile[min(len(profile)-1,i+2)]
+            span=b[0]-a[0];t=(y-a[0])/span
+            return tuple((2*t**3-3*t*t+1)*a[k]+(t**3-2*t*t+t)*span*(b[k]-prev[k])/(b[0]-prev[0])+(-2*t**3+3*t*t)*b[k]+(t**3-t*t)*span*(nxt[k]-a[k])/(nxt[0]-a[0]) for k in range(1,4))
     return profile[0][1:] if y<profile[0][0] else profile[-1][1:]
 def surface(y,t,offset=0):
     w,z,c=shape(y);return Vector(((w*1.05+offset)*math.sin(t),y,c+(z*1.30+offset)*math.cos(t)))
@@ -350,8 +354,10 @@
     if cy>0:raw=[(-L*.53,-H*.29),(-L*.36,H*.45),(L*.41,H*.42),(L*.52,H*.23),(L*.45,-H*.31),(L*.21,-H*.46),(-L*.35,-H*.43)]
     p2=catmull([(y,0,z) for y,z in raw+[raw[0],raw[1]]],4)[:-4]
     p2=p2[:-1] if (p2[0]-p2[-1]).length<.01 else p2
-    cx=shape(cy)[0]*1.05-.5
-    ringspec=[(.96,0), (1.08,2.3),(1.04,5.4),(.87,6.5),(.79,4.8),(.79,1.8)]
+    # Seat the back into the shell, but keep the entire opening in front of all
+    # overlapping armour, including the broad shoulder at the forward end.
+    cx=max(shape(cy-L*.58+i*L*1.16/32)[0] for i in range(33))*1.05+3.3
+    ringspec=[(.96,-8.0), (1.08,1.2),(1.04,5.4),(.87,6.5),(.79,4.8),(.79,1.8)]
     vs=[];n=len(p2)
     for scale,depth in ringspec:
         for p in p2:vs.append((sign*(cx+depth),cy+p.x*scale,cz+p.z*scale))
@@ -412,8 +418,8 @@
     for j in range(6):
         u=j/5;r=26.1-7*u;a=t+.085*u;pts.append((r*math.cos(a),-201+11*u,r*.89*math.sin(a)))
     tube(h,pts,[.90,1.05,.98,.81,.54,.23],2,9)
-    lit=[Vector(p)+Vector((-.16*math.cos(t),-.72,-.16*math.sin(t))) for p in pts]
-    tube(h,lit,[.29,.46,.44,.38,.24,.08],4,7)
+    lit=[Vector(p)+Vector((-.16*math.cos(t),-.98,-.16*math.sin(t))) for p in pts]
+    tube(h,lit,[.46,.65,.61,.47,.27,.08],4,8)
     # Dark rib continuing down the gullet from each luminous tooth.
     pts2=[]
     for j in range(6):
@@ -454,21 +460,23 @@
         theta=row*.43;base=surface(yy+row*3,theta,2.0);ht=(23 if row==0 else 18)*math.sin((i+1)/9*math.pi)**.5*(1+.10*math.sin(i*2.7))
         pts=catmull([base,base+Vector((row*2,3,ht*.4)),base+Vector((row*5,11,ht*.78)),base+Vector((row*7,21,ht))],5)
         rr=[3.6*(1-j/(len(pts)-1))**1.05+.035 for j in range(len(pts))]
-        tube(h,pts,rr,2,10,.66);ellipsoid(h,base,(5.3,7.8,2.8),0,18,8)
+        tube(h,pts,rr,2,12,ellipse=.66);ellipsoid(h,base,(5.3,7.8,2.8),0,18,8)
         ring(h,base+Vector((0,0,1.8)),(0,0,1),4.1,.6,2,24,7,1.25)
         tube(h,[base+Vector((row*2,0,1)),base+Vector((row*3,4,ht*.36)),base+Vector((row*5,11,ht*.7))],[.35,.28,.05],1,6)
 
 # Tail split vanes around the engine cluster: swept, no familiar human ship tail.
 for s in [-1,1]:
     for zz in [-14,15]:
-        pts=catmull([(s*28,132,zz),(s*31,163,zz*1.1),(s*26,189,zz*1.08),(s*21,211,zz*.9)],6)
-        rr=[6*(1-i/(len(pts)-1))**.8+.07 for i in range(len(pts))];tube(h,pts,rr,0,14,.58)
+        pts=catmull([(s*28,132,zz),(s*31,163,zz*1.1),(s*26,198,zz*1.08),(s*21,226,zz*.9)],6)
+        rr=[6*(1-i/(len(pts)-1))**.8+.07 for i in range(len(pts))];tube(h,pts,rr,0,14,ellipse=.58)
         tube(h,[p+Vector((0,0,2.2 if zz>0 else -2.2)) for p in pts[:-3]],[.30]*len(pts[:-3]),1,6)
 
 # Three main engines, bevelled ring exits, recessed glowing interiors.
 THRUSTERS=[]
-for i,(x,z,r,end) in enumerate([(-24,-7,12,196),(24,-7,12,196),(0,15,9,201)]):
-    tube(h,[(x,133,z),(x,147,z),(x,169,z),(x,end-4,z)],[r*.83,r*1.21,r*1.1,r],0,48)
+for i,(x,z,r,end) in enumerate([(-24,-7,12,214),(24,-7,12,214),(0,15,9,218)]):
+    # Nozzles extend clear of the tail skin, with an open casing and a closed
+    # emissive bowl. No hidden cap may cut across the glowing exit aperture.
+    tube(h,[(x,133,z),(x,147,z),(x,169,z),(x,end-4,z)],[r*.83,r*1.21,r*1.1,r],0,48,cap=False)
     ring(h,(x,151,z),(0,1,0),r*1.16,.9,2,48,8)
     # Exposed hot chamber between overlapping casing collars, visible from the side.
     for yy in [165,167.3,169.6,171.9]:ring(h,(x,yy,z),(0,1,0),r*1.115,.82,5,48,6)
@@ -497,7 +505,7 @@
 arms=[]
 for side in [-1,1]:
     for j,y in enumerate([-54,5,64]):
-        idx=len(arms)+1;root=Vector((side*(44-j*1.5),y+(24 if side<0 else 0),-29+j*.4));g=Geo('Arm_'+str(idx),root)
+        idx=len(arms)+1;root=Vector((side*(44-j*1.5),y+(34 if side<0 else 0),-29+j*.4));g=Geo('Arm_'+str(idx),root)
         ellipsoid(h,root+Vector((0,0,2)),(10.2,10.8,5.7),0,24,10)
         axis=Vector((side*.45,0,-.89)).normalized()
         ring(h,root+axis*1.0,axis,8.3,1.55,0,40,8)
@@ -507,6 +515,10 @@
         if side<0:dy=[v+5*math.sin(k*1.4+j) for k,v in enumerate(dy)]
         curl=[(6,dy[0],-12),(18-j,dy[1],-26),(30-j*4,dy[2],-39-j*2),(26-j*4,dy[3],-50-j*2),(16+j,dy[4],-54-j+(3 if side<0 else 0))]
         if j==2:curl=[(5,dy[0],-12),(13,dy[1],-23),(28,dy[2],-34),(28,dy[3],-48),(14,dy[4],-59)]
+        if side<0:
+            # A second, lower fan gives six distinct hanging silhouettes, with
+            # different tip heights rather than three mirrored hidden limbs.
+            curl=[(x*1.13,dy,dz*(1.24+.055*j)) for x,dy,dz in curl]
         points=[root]+[root+Vector((side*x,dy,dz)) for x,dy,dz in curl]
         pts=catmull(points,7);N=len(pts)
         rr=[6.5*(1-i/(N-1))+.95 for i in range(N)]
@@ -515,7 +527,7 @@
         for k in range(0,N-2,2):
             a,b=pts[k],pts[min(k+2,N-1)];mid=(a+b)/2;direction=(b-a).normalized();length=(b-a).length
             r=rr[k]+.4
-            tube(g,[a,a+direction*.5,b-direction*.55,b],[r*.91,r*1.08,r*1.02,r*.85],0,14,.88)
+            tube(g,[a,a+direction*.5,b-direction*.55,b],[r*.91,r*1.08,r*1.02,r*.85],0,14,ellipse=.88)
             ring(g,a+direction*.6,direction,r*1.02,.22,1,14,6,.88)
             # One narrow spinal rail down every link; no free-floating greebles.
             lateral=Vector((side,0,0));tube(g,[a+lateral*r*.89,mid+lateral*(r+ .15),b+lateral*r*.79],[.3,.34,.22],2,6)
@@ -544,7 +556,7 @@
             for bb in [-1.15,1.15]:
                 q=p+a*aa+b*bb+n*.35;tube(h,[q,q+n*.10],.12,1,7)
         # Small slit receiver: the ship has no windows or cockpit.
-        q=p+n*.4+b*(-.7);rounded_box(h,q,(.7,.14,.12),4,.045,B)
+        q=p+n*.4+b*(-.7);rounded_box(h,q,(.7,.14,.12),2,.045,B)
     for yy in [-150,-102,-63,-20,20,60,97,132]:
         theta=side*2.04;p=surface(yy,theta,1.5)
         n=Vector((math.sin(theta),0,math.cos(theta)));a=Vector((0,1,0));b=n.cross(a);B=Matrix(((a.x,b.x,n.x),(a.y,b.y,n.y),(a.z,b.z,n.z)))
@@ -585,7 +597,7 @@
 for ob in objs:
     select(ob);mod=ob.modifiers.new('Triangulated runtime surface','TRIANGULATE');bpy.ops.object.modifier_apply(modifier=mod.name)
     if ob==hull:
-        dec=ob.modifiers.new('Runtime surface reduction','DECIMATE');dec.ratio=min(.90,(182000-sum(len(a.data.polygons)*2 for a in objs[1:]))/len(ob.data.polygons));dec.use_collapse_triangulate=True;bpy.ops.object.modifier_apply(modifier=dec.name)
+        dec=ob.modifiers.new('Runtime surface reduction','DECIMATE');dec.ratio=min(.90,(178000-sum(len(a.data.polygons)*2 for a in objs[1:]))/len(ob.data.polygons));dec.use_collapse_triangulate=True;bpy.ops.object.modifier_apply(modifier=dec.name)
     if ob==hull:
         weighted=ob.modifiers.new('Area weighted armour shading','WEIGHTED_NORMAL');weighted.keep_sharp=True;weighted.mode='FACE_AREA_WITH_ANGLE';weighted.weight=35
         bpy.ops.object.modifier_apply(modifier=weighted.name)
@@ -601,7 +613,7 @@
     o=bpy.data.objects.new(name,None);sc.collection.objects.link(o);o.location=worldp(p);o.parent=parent;o.empty_display_size=2;return o
 for i,p in enumerate(THRUSTERS):empty('Thruster_'+str(i+1),p)
 empty('Camera_Chase',(0,315,110))
-empty('Light_Nav_L',(63,5,1))['color']=[1.0,0.0,0.0];empty('Light_Nav_R',(-63,5,1))['color']=[0.0,1.0,0.0];empty('Light_Beacon',(0,34,50))['color']=[1.0,.12,.0]
+empty('Light_Nav_L',(63,5,1))['color']=[1.0,0.0,0.0];empty('Light_Nav_R',(-63,5,1))['color']=[0.0,1.0,0.0];empty('Light_Beacon',surface(34,0,5))['color']=[1.0,.12,.0]
 asset=[o for o in sc.objects]
 bpy.context.view_layer.update()
 tri=sum(len(o.data.polygons) for o in objs)
@@ -619,10 +631,11 @@
 area('Cool fill',(-190,-50,70),480000,230,(.51,.68,1))
 area('Aft rim',(100,220,200),1250000,170,(.68,.8,1))
 area('Under bounce',(40,-80,-200),290000,220,(.64,.72,.9))
+area('Arm reflection',(220,-160,-120),650000,220,(.73,.82,1),target=(0,20,-40))
 camd=bpy.data.cameras.new('Render camera');cam=bpy.data.objects.new('Render camera',camd);sc.collection.objects.link(cam);sc.camera=cam;camd.clip_end=3000
 
 def camera(kind='hero'):
-    if kind=='hero':pos=(620,-460,180);target=(0,-6,-3);camd.type='ORTHO';camd.ortho_scale=470
+    if kind=='hero':pos=(510,-665,195);target=(0,-6,-3);camd.type='ORTHO';camd.ortho_scale=440
     elif kind=='side':pos=(650,0,24);target=(0,0,-7);camd.type='ORTHO';camd.ortho_scale=466
     elif kind=='rear':pos=(325,490,180);target=(0,25,-3);camd.type='ORTHO';camd.ortho_scale=450
     else:pos=(139,-234,54);target=(34,-150,0);camd.type='ORTHO';camd.ortho_scale=130
@@ -701,7 +714,7 @@
 'Materials: Paint, Titanium, HeatScorched, Recess, Lamps, Engines; Paint neutral texture × linear faction colour, default [0.10, 0.11, 0.10].',
 'Cycles GPU baked tiling sets: 1024² base-colour and Paint normal; shared 512² metal normals; 512² ORM; 8 m world-scale UV repeats; no unique hull atlas.',
 'Poly Haven CC0 IDs: metal_plate, metal_plate_02, rusty_metal_02; https://polyhaven.com/license ; https://polyhaven.com/a/metal_plate ; https://polyhaven.com/a/metal_plate_02 ; https://polyhaven.com/a/rusty_metal_02 .',
-'Reference differences: six larger harvesting arms as requested, bespoke overlapping armour layout and three recessed rear nozzles; no windows, lettering or logos.'
+'Reference differences: six harvesting arms as requested, cleaner broad armour plates, bespoke vent fairings and three recessed rear nozzles; no windows, lettering or logos.'
 ])+'\n')
 # Clay first: verifies actual built silhouettes before the material presentation.
 camera();clay=bpy.data.materials.new('QA clay');clay.diffuse_color=(.36,.36,.36,1);clay.use_nodes=True;clay.node_tree.nodes['Principled BSDF'].inputs['Roughness'].default_value=.72;clay.node_tree.nodes['Principled BSDF'].inputs['Base Color'].default_value=(.36,.36,.36,1)

hook: PreToolUse
hook: PreToolUse Completed
hook: PreToolUse
hook: PreToolUse Completed
hook: PreToolUse
hook: PreToolUse Completed
diff --git a/jobs/alien-harvester-v1/build_alien-harvester.py b/jobs/alien-harvester-v1/build_alien-harvester.py
index 2fd1298f86ec659e97961d76bdbc9f692a926df6..57f69696c1bb60d37c2615501f86a75a47bda397
--- a/jobs/alien-harvester-v1/build_alien-harvester.py
+++ b/jobs/alien-harvester-v1/build_alien-harvester.py
@@ -161,7 +161,7 @@
 # Identical metal stock normal bakes share one image in the delivered GLB.
 MATS[3].node_tree.nodes['Normal'].image=MATS[1].node_tree.nodes['Normal'].image
 
-for name,col,strength in [('Lamps',(1,.15,.008,1),2.3),('Engines',(1,.22,.018,1),2.2)]:
+for name,col,strength in [('Lamps',(1,.18,.004,1),1.8),('Engines',(1,.24,.009,1),1.8)]:
     m=bpy.data.materials.new(name);m.use_nodes=True;p=m.node_tree.nodes.get('Principled BSDF');p.inputs['Base Color'].default_value=col;p.inputs['Roughness'].default_value=.34;p.inputs['Metallic'].default_value=.3;p.inputs['Emission Color'].default_value=col;p.inputs['Emission Strength'].default_value=strength;MATS.append(m)
 
 class Geo:
@@ -271,7 +271,11 @@
     for i in range(len(profile)-1):
         a,b=profile[i:i+2]
         if a[0]<=y<=b[0]:
-            t=(y-a[0])/(b[0]-a[0]);t=t*t*(3-2*t);return tuple(a[k]*(1-t)+b[k]*t for k in range(1,4))
+            # C1-continuous loft: no flattened shoulder or pinched ring at each
+            # control station, and the overlaid armour uses the identical skin.
+            prev=profile[max(0,i-1)];nxt=profile[min(len(profile)-1,i+2)]
+            span=b[0]-a[0];t=(y-a[0])/span
+            return tuple((2*t**3-3*t*t+1)*a[k]+(t**3-2*t*t+t)*span*(b[k]-prev[k])/(b[0]-prev[0])+(-2*t**3+3*t*t)*b[k]+(t**3-t*t)*span*(nxt[k]-a[k])/(nxt[0]-a[0]) for k in range(1,4))
     return profile[0][1:] if y<profile[0][0] else profile[-1][1:]
 def surface(y,t,offset=0):
     w,z,c=shape(y);return Vector(((w*1.05+offset)*math.sin(t),y,c+(z*1.30+offset)*math.cos(t)))
@@ -350,8 +354,10 @@
     if cy>0:raw=[(-L*.53,-H*.29),(-L*.36,H*.45),(L*.41,H*.42),(L*.52,H*.23),(L*.45,-H*.31),(L*.21,-H*.46),(-L*.35,-H*.43)]
     p2=catmull([(y,0,z) for y,z in raw+[raw[0],raw[1]]],4)[:-4]
     p2=p2[:-1] if (p2[0]-p2[-1]).length<.01 else p2
-    cx=shape(cy)[0]*1.05-.5
-    ringspec=[(.96,0), (1.08,2.3),(1.04,5.4),(.87,6.5),(.79,4.8),(.79,1.8)]
+    # Seat the back into the shell, but keep the entire opening in front of all
+    # overlapping armour, including the broad shoulder at the forward end.
+    cx=max(shape(cy-L*.58+i*L*1.16/32)[0] for i in range(33))*1.05+3.3
+    ringspec=[(.96,-8.0), (1.08,1.2),(1.04,5.4),(.87,6.5),(.79,4.8),(.79,1.8)]
     vs=[];n=len(p2)
     for scale,depth in ringspec:
         for p in p2:vs.append((sign*(cx+depth),cy+p.x*scale,cz+p.z*scale))
@@ -412,8 +418,8 @@
     for j in range(6):
         u=j/5;r=26.1-7*u;a=t+.085*u;pts.append((r*math.cos(a),-201+11*u,r*.89*math.sin(a)))
     tube(h,pts,[.90,1.05,.98,.81,.54,.23],2,9)
-    lit=[Vector(p)+Vector((-.16*math.cos(t),-.72,-.16*math.sin(t))) for p in pts]
-    tube(h,lit,[.29,.46,.44,.38,.24,.08],4,7)
+    lit=[Vector(p)+Vector((-.16*math.cos(t),-.98,-.16*math.sin(t))) for p in pts]
+    tube(h,lit,[.46,.65,.61,.47,.27,.08],4,8)
     # Dark rib continuing down the gullet from each luminous tooth.
     pts2=[]
     for j in range(6):
@@ -454,21 +460,23 @@
         theta=row*.43;base=surface(yy+row*3,theta,2.0);ht=(23 if row==0 else 18)*math.sin((i+1)/9*math.pi)**.5*(1+.10*math.sin(i*2.7))
         pts=catmull([base,base+Vector((row*2,3,ht*.4)),base+Vector((row*5,11,ht*.78)),base+Vector((row*7,21,ht))],5)
         rr=[3.6*(1-j/(len(pts)-1))**1.05+.035 for j in range(len(pts))]
-        tube(h,pts,rr,2,10,.66);ellipsoid(h,base,(5.3,7.8,2.8),0,18,8)
+        tube(h,pts,rr,2,12,ellipse=.66);ellipsoid(h,base,(5.3,7.8,2.8),0,18,8)
         ring(h,base+Vector((0,0,1.8)),(0,0,1),4.1,.6,2,24,7,1.25)
         tube(h,[base+Vector((row*2,0,1)),base+Vector((row*3,4,ht*.36)),base+Vector((row*5,11,ht*.7))],[.35,.28,.05],1,6)
 
 # Tail split vanes around the engine cluster: swept, no familiar human ship tail.
 for s in [-1,1]:
     for zz in [-14,15]:
-        pts=catmull([(s*28,132,zz),(s*31,163,zz*1.1),(s*26,189,zz*1.08),(s*21,211,zz*.9)],6)
-        rr=[6*(1-i/(len(pts)-1))**.8+.07 for i in range(len(pts))];tube(h,pts,rr,0,14,.58)
+        pts=catmull([(s*28,132,zz),(s*31,163,zz*1.1),(s*26,198,zz*1.08),(s*21,226,zz*.9)],6)
+        rr=[6*(1-i/(len(pts)-1))**.8+.07 for i in range(len(pts))];tube(h,pts,rr,0,14,ellipse=.58)
         tube(h,[p+Vector((0,0,2.2 if zz>0 else -2.2)) for p in pts[:-3]],[.30]*len(pts[:-3]),1,6)
 
 # Three main engines, bevelled ring exits, recessed glowing interiors.
 THRUSTERS=[]
-for i,(x,z,r,end) in enumerate([(-24,-7,12,196),(24,-7,12,196),(0,15,9,201)]):
-    tube(h,[(x,133,z),(x,147,z),(x,169,z),(x,end-4,z)],[r*.83,r*1.21,r*1.1,r],0,48)
+for i,(x,z,r,end) in enumerate([(-24,-7,12,214),(24,-7,12,214),(0,15,9,218)]):
+    # Nozzles extend clear of the tail skin, with an open casing and a closed
+    # emissive bowl. No hidden cap may cut across the glowing exit aperture.
+    tube(h,[(x,133,z),(x,147,z),(x,169,z),(x,end-4,z)],[r*.83,r*1.21,r*1.1,r],0,48,cap=False)
     ring(h,(x,151,z),(0,1,0),r*1.16,.9,2,48,8)
     # Exposed hot chamber between overlapping casing collars, visible from the side.
     for yy in [165,167.3,169.6,171.9]:ring(h,(x,yy,z),(0,1,0),r*1.115,.82,5,48,6)
@@ -497,7 +505,7 @@
 arms=[]
 for side in [-1,1]:
     for j,y in enumerate([-54,5,64]):
-        idx=len(arms)+1;root=Vector((side*(44-j*1.5),y+(24 if side<0 else 0),-29+j*.4));g=Geo('Arm_'+str(idx),root)
+        idx=len(arms)+1;root=Vector((side*(44-j*1.5),y+(34 if side<0 else 0),-29+j*.4));g=Geo('Arm_'+str(idx),root)
         ellipsoid(h,root+Vector((0,0,2)),(10.2,10.8,5.7),0,24,10)
         axis=Vector((side*.45,0,-.89)).normalized()
         ring(h,root+axis*1.0,axis,8.3,1.55,0,40,8)
@@ -507,6 +515,10 @@
         if side<0:dy=[v+5*math.sin(k*1.4+j) for k,v in enumerate(dy)]
         curl=[(6,dy[0],-12),(18-j,dy[1],-26),(30-j*4,dy[2],-39-j*2),(26-j*4,dy[3],-50-j*2),(16+j,dy[4],-54-j+(3 if side<0 else 0))]
         if j==2:curl=[(5,dy[0],-12),(13,dy[1],-23),(28,dy[2],-34),(28,dy[3],-48),(14,dy[4],-59)]
+        if side<0:
+            # A second, lower fan gives six distinct hanging silhouettes, with
+            # different tip heights rather than three mirrored hidden limbs.
+            curl=[(x*1.13,dy,dz*(1.24+.055*j)) for x,dy,dz in curl]
         points=[root]+[root+Vector((side*x,dy,dz)) for x,dy,dz in curl]
         pts=catmull(points,7);N=len(pts)
         rr=[6.5*(1-i/(N-1))+.95 for i in range(N)]
@@ -515,7 +527,7 @@
         for k in range(0,N-2,2):
             a,b=pts[k],pts[min(k+2,N-1)];mid=(a+b)/2;direction=(b-a).normalized();length=(b-a).length
             r=rr[k]+.4
-            tube(g,[a,a+direction*.5,b-direction*.55,b],[r*.91,r*1.08,r*1.02,r*.85],0,14,.88)
+            tube(g,[a,a+direction*.5,b-direction*.55,b],[r*.91,r*1.08,r*1.02,r*.85],0,14,ellipse=.88)
             ring(g,a+direction*.6,direction,r*1.02,.22,1,14,6,.88)
             # One narrow spinal rail down every link; no free-floating greebles.
             lateral=Vector((side,0,0));tube(g,[a+lateral*r*.89,mid+lateral*(r+ .15),b+lateral*r*.79],[.3,.34,.22],2,6)
@@ -544,7 +556,7 @@
             for bb in [-1.15,1.15]:
                 q=p+a*aa+b*bb+n*.35;tube(h,[q,q+n*.10],.12,1,7)
         # Small slit receiver: the ship has no windows or cockpit.
-        q=p+n*.4+b*(-.7);rounded_box(h,q,(.7,.14,.12),4,.045,B)
+        q=p+n*.4+b*(-.7);rounded_box(h,q,(.7,.14,.12),2,.045,B)
     for yy in [-150,-102,-63,-20,20,60,97,132]:
         theta=side*2.04;p=surface(yy,theta,1.5)
         n=Vector((math.sin(theta),0,math.cos(theta)));a=Vector((0,1,0));b=n.cross(a);B=Matrix(((a.x,b.x,n.x),(a.y,b.y,n.y),(a.z,b.z,n.z)))
@@ -585,7 +597,7 @@
 for ob in objs:
     select(ob);mod=ob.modifiers.new('Triangulated runtime surface','TRIANGULATE');bpy.ops.object.modifier_apply(modifier=mod.name)
     if ob==hull:
-        dec=ob.modifiers.new('Runtime surface reduction','DECIMATE');dec.ratio=min(.90,(182000-sum(len(a.data.polygons)*2 for a in objs[1:]))/len(ob.data.polygons));dec.use_collapse_triangulate=True;bpy.ops.object.modifier_apply(modifier=dec.name)
+        dec=ob.modifiers.new('Runtime surface reduction','DECIMATE');dec.ratio=min(.90,(178000-sum(len(a.data.polygons)*2 for a in objs[1:]))/len(ob.data.polygons));dec.use_collapse_triangulate=True;bpy.ops.object.modifier_apply(modifier=dec.name)
     if ob==hull:
         weighted=ob.modifiers.new('Area weighted armour shading','WEIGHTED_NORMAL');weighted.keep_sharp=True;weighted.mode='FACE_AREA_WITH_ANGLE';weighted.weight=35
         bpy.ops.object.modifier_apply(modifier=weighted.name)
@@ -601,7 +613,7 @@
     o=bpy.data.objects.new(name,None);sc.collection.objects.link(o);o.location=worldp(p);o.parent=parent;o.empty_display_size=2;return o
 for i,p in enumerate(THRUSTERS):empty('Thruster_'+str(i+1),p)
 empty('Camera_Chase',(0,315,110))
-empty('Light_Nav_L',(63,5,1))['color']=[1.0,0.0,0.0];empty('Light_Nav_R',(-63,5,1))['color']=[0.0,1.0,0.0];empty('Light_Beacon',(0,34,50))['color']=[1.0,.12,.0]
+empty('Light_Nav_L',(63,5,1))['color']=[1.0,0.0,0.0];empty('Light_Nav_R',(-63,5,1))['color']=[0.0,1.0,0.0];empty('Light_Beacon',surface(34,0,5))['color']=[1.0,.12,.0]
 asset=[o for o in sc.objects]
 bpy.context.view_layer.update()
 tri=sum(len(o.data.polygons) for o in objs)
@@ -619,10 +631,11 @@
 area('Cool fill',(-190,-50,70),480000,230,(.51,.68,1))
 area('Aft rim',(100,220,200),1250000,170,(.68,.8,1))
 area('Under bounce',(40,-80,-200),290000,220,(.64,.72,.9))
+area('Arm reflection',(220,-160,-120),650000,220,(.73,.82,1),target=(0,20,-40))
 camd=bpy.data.cameras.new('Render camera');cam=bpy.data.objects.new('Render camera',camd);sc.collection.objects.link(cam);sc.camera=cam;camd.clip_end=3000
 
 def camera(kind='hero'):
-    if kind=='hero':pos=(620,-460,180);target=(0,-6,-3);camd.type='ORTHO';camd.ortho_scale=470
+    if kind=='hero':pos=(510,-665,195);target=(0,-6,-3);camd.type='ORTHO';camd.ortho_scale=440
     elif kind=='side':pos=(650,0,24);target=(0,0,-7);camd.type='ORTHO';camd.ortho_scale=466
     elif kind=='rear':pos=(325,490,180);target=(0,25,-3);camd.type='ORTHO';camd.ortho_scale=450
     else:pos=(139,-234,54);target=(34,-150,0);camd.type='ORTHO';camd.ortho_scale=130
@@ -701,7 +714,7 @@
 'Materials: Paint, Titanium, HeatScorched, Recess, Lamps, Engines; Paint neutral texture × linear faction colour, default [0.10, 0.11, 0.10].',
 'Cycles GPU baked tiling sets: 1024² base-colour and Paint normal; shared 512² metal normals; 512² ORM; 8 m world-scale UV repeats; no unique hull atlas.',
 'Poly Haven CC0 IDs: metal_plate, metal_plate_02, rusty_metal_02; https://polyhaven.com/license ; https://polyhaven.com/a/metal_plate ; https://polyhaven.com/a/metal_plate_02 ; https://polyhaven.com/a/rusty_metal_02 .',
-'Reference differences: six larger harvesting arms as requested, bespoke overlapping armour layout and three recessed rear nozzles; no windows, lettering or logos.'
+'Reference differences: six harvesting arms as requested, cleaner broad armour plates, bespoke vent fairings and three recessed rear nozzles; no windows, lettering or logos.'
 ])+'\n')
 # Clay first: verifies actual built silhouettes before the material presentation.
 camera();clay=bpy.data.materials.new('QA clay');clay.diffuse_color=(.36,.36,.36,1);clay.use_nodes=True;clay.node_tree.nodes['Principled BSDF'].inputs['Roughness'].default_value=.72;clay.node_tree.nodes['Principled BSDF'].inputs['Base Color'].default_value=(.36,.36,.36,1)

 succeeded in 22670ms:
context compacted
hook: PreToolUse
hook: PreToolUse
hook: PreToolUse
hook: PreToolUse
hook: PreToolUse
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hook: PreToolUse
hook: PreToolUse
hook: PreToolUse Completed
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hook: PreToolUse Completed
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exec
/bin/bash -lc 'ls -lh alien-harvester.glb build_alien-harvester.py final.png side.png clay.png paints.png nodes.json NOTES.md' in /home/claude-agent/forge-build/forge-assets/jobs/alien-harvester-v1
 succeeded in 0ms:
-rw-r--r-- 1 claude-agent claude-agent  934 Oct 16 19:21 NOTES.md
-rw-r--r-- 1 claude-agent claude-agent  12M Oct 16 19:21 alien-harvester.glb
-rw-rw-r-- 1 claude-agent claude-agent  48K Oct 16 19:19 build_alien-harvester.py
-rw-r--r-- 1 claude-agent claude-agent 1.9M Oct 16 19:21 clay.png
-rw-r--r-- 1 claude-agent claude-agent 2.1M Oct 16 19:21 final.png
-rw-r--r-- 1 claude-agent claude-agent 4.0K Oct 16 19:21 nodes.json
-rw-r--r-- 1 claude-agent claude-agent 1.4M Oct 16 19:21 paints.png
-rw-r--r-- 1 claude-agent claude-agent 2.1M Oct 16 19:21 side.png

hook: PreToolUse Completed
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exec
/bin/bash -lc 'cat /tmp/alien-harvester-check/contract-final.json /tmp/alien-harvester-check/audit-final.json /tmp/alien-harvester-check/report.json' in /home/claude-agent/forge-build/forge-assets/jobs/alien-harvester-v1
 succeeded in 0ms:
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  "note": "Mesh-local counts, before node transforms/instances. Degenerate threshold: cross-product magnitude < 1e-12 in asset units squared. Not a source-topology or visual-quality verdict.",
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diff --git a/jobs/alien-harvester-v1/build_alien-harvester.py b/jobs/alien-harvester-v1/build_alien-harvester.py
index 2fd1298f86ec659e97961d76bdbc9f692a926df6..57f69696c1bb60d37c2615501f86a75a47bda397
--- a/jobs/alien-harvester-v1/build_alien-harvester.py
+++ b/jobs/alien-harvester-v1/build_alien-harvester.py
@@ -161,7 +161,7 @@
 # Identical metal stock normal bakes share one image in the delivered GLB.
 MATS[3].node_tree.nodes['Normal'].image=MATS[1].node_tree.nodes['Normal'].image
 
-for name,col,strength in [('Lamps',(1,.15,.008,1),2.3),('Engines',(1,.22,.018,1),2.2)]:
+for name,col,strength in [('Lamps',(1,.18,.004,1),1.8),('Engines',(1,.24,.009,1),1.8)]:
     m=bpy.data.materials.new(name);m.use_nodes=True;p=m.node_tree.nodes.get('Principled BSDF');p.inputs['Base Color'].default_value=col;p.inputs['Roughness'].default_value=.34;p.inputs['Metallic'].default_value=.3;p.inputs['Emission Color'].default_value=col;p.inputs['Emission Strength'].default_value=strength;MATS.append(m)
 
 class Geo:
@@ -271,7 +271,11 @@
     for i in range(len(profile)-1):
         a,b=profile[i:i+2]
         if a[0]<=y<=b[0]:
-            t=(y-a[0])/(b[0]-a[0]);t=t*t*(3-2*t);return tuple(a[k]*(1-t)+b[k]*t for k in range(1,4))
+            # C1-continuous loft: no flattened shoulder or pinched ring at each
+            # control station, and the overlaid armour uses the identical skin.
+            prev=profile[max(0,i-1)];nxt=profile[min(len(profile)-1,i+2)]
+            span=b[0]-a[0];t=(y-a[0])/span
+            return tuple((2*t**3-3*t*t+1)*a[k]+(t**3-2*t*t+t)*span*(b[k]-prev[k])/(b[0]-prev[0])+(-2*t**3+3*t*t)*b[k]+(t**3-t*t)*span*(nxt[k]-a[k])/(nxt[0]-a[0]) for k in range(1,4))
     return profile[0][1:] if y<profile[0][0] else profile[-1][1:]
 def surface(y,t,offset=0):
     w,z,c=shape(y);return Vector(((w*1.05+offset)*math.sin(t),y,c+(z*1.30+offset)*math.cos(t)))
@@ -350,8 +354,10 @@
     if cy>0:raw=[(-L*.53,-H*.29),(-L*.36,H*.45),(L*.41,H*.42),(L*.52,H*.23),(L*.45,-H*.31),(L*.21,-H*.46),(-L*.35,-H*.43)]
     p2=catmull([(y,0,z) for y,z in raw+[raw[0],raw[1]]],4)[:-4]
     p2=p2[:-1] if (p2[0]-p2[-1]).length<.01 else p2
-    cx=shape(cy)[0]*1.05-.5
-    ringspec=[(.96,0), (1.08,2.3),(1.04,5.4),(.87,6.5),(.79,4.8),(.79,1.8)]
+    # Seat the back into the shell, but keep the entire opening in front of all
+    # overlapping armour, including the broad shoulder at the forward end.
+    cx=max(shape(cy-L*.58+i*L*1.16/32)[0] for i in range(33))*1.05+3.3
+    ringspec=[(.96,-8.0), (1.08,1.2),(1.04,5.4),(.87,6.5),(.79,4.8),(.79,1.8)]
     vs=[];n=len(p2)
     for scale,depth in ringspec:
         for p in p2:vs.append((sign*(cx+depth),cy+p.x*scale,cz+p.z*scale))
@@ -412,8 +418,8 @@
     for j in range(6):
         u=j/5;r=26.1-7*u;a=t+.085*u;pts.append((r*math.cos(a),-201+11*u,r*.89*math.sin(a)))
     tube(h,pts,[.90,1.05,.98,.81,.54,.23],2,9)
-    lit=[Vector(p)+Vector((-.16*math.cos(t),-.72,-.16*math.sin(t))) for p in pts]
-    tube(h,lit,[.29,.46,.44,.38,.24,.08],4,7)
+    lit=[Vector(p)+Vector((-.16*math.cos(t),-.98,-.16*math.sin(t))) for p in pts]
+    tube(h,lit,[.46,.65,.61,.47,.27,.08],4,8)
     # Dark rib continuing down the gullet from each luminous tooth.
     pts2=[]
     for j in range(6):
@@ -454,21 +460,23 @@
         theta=row*.43;base=surface(yy+row*3,theta,2.0);ht=(23 if row==0 else 18)*math.sin((i+1)/9*math.pi)**.5*(1+.10*math.sin(i*2.7))
         pts=catmull([base,base+Vector((row*2,3,ht*.4)),base+Vector((row*5,11,ht*.78)),base+Vector((row*7,21,ht))],5)
         rr=[3.6*(1-j/(len(pts)-1))**1.05+.035 for j in range(len(pts))]
-        tube(h,pts,rr,2,10,.66);ellipsoid(h,base,(5.3,7.8,2.8),0,18,8)
+        tube(h,pts,rr,2,12,ellipse=.66);ellipsoid(h,base,(5.3,7.8,2.8),0,18,8)
         ring(h,base+Vector((0,0,1.8)),(0,0,1),4.1,.6,2,24,7,1.25)
         tube(h,[base+Vector((row*2,0,1)),base+Vector((row*3,4,ht*.36)),base+Vector((row*5,11,ht*.7))],[.35,.28,.05],1,6)
 
 # Tail split vanes around the engine cluster: swept, no familiar human ship tail.
 for s in [-1,1]:
     for zz in [-14,15]:
-        pts=catmull([(s*28,132,zz),(s*31,163,zz*1.1),(s*26,189,zz*1.08),(s*21,211,zz*.9)],6)
-        rr=[6*(1-i/(len(pts)-1))**.8+.07 for i in range(len(pts))];tube(h,pts,rr,0,14,.58)
+        pts=catmull([(s*28,132,zz),(s*31,163,zz*1.1),(s*26,198,zz*1.08),(s*21,226,zz*.9)],6)
+        rr=[6*(1-i/(len(pts)-1))**.8+.07 for i in range(len(pts))];tube(h,pts,rr,0,14,ellipse=.58)
         tube(h,[p+Vector((0,0,2.2 if zz>0 else -2.2)) for p in pts[:-3]],[.30]*len(pts[:-3]),1,6)
 
 # Three main engines, bevelled ring exits, recessed glowing interiors.
 THRUSTERS=[]
-for i,(x,z,r,end) in enumerate([(-24,-7,12,196),(24,-7,12,196),(0,15,9,201)]):
-    tube(h,[(x,133,z),(x,147,z),(x,169,z),(x,end-4,z)],[r*.83,r*1.21,r*1.1,r],0,48)
+for i,(x,z,r,end) in enumerate([(-24,-7,12,214),(24,-7,12,214),(0,15,9,218)]):
+    # Nozzles extend clear of the tail skin, with an open casing and a closed
+    # emissive bowl. No hidden cap may cut across the glowing exit aperture.
+    tube(h,[(x,133,z),(x,147,z),(x,169,z),(x,end-4,z)],[r*.83,r*1.21,r*1.1,r],0,48,cap=False)
     ring(h,(x,151,z),(0,1,0),r*1.16,.9,2,48,8)
     # Exposed hot chamber between overlapping casing collars, visible from the side.
     for yy in [165,167.3,169.6,171.9]:ring(h,(x,yy,z),(0,1,0),r*1.115,.82,5,48,6)
@@ -497,7 +505,7 @@
 arms=[]
 for side in [-1,1]:
     for j,y in enumerate([-54,5,64]):
-        idx=len(arms)+1;root=Vector((side*(44-j*1.5),y+(24 if side<0 else 0),-29+j*.4));g=Geo('Arm_'+str(idx),root)
+        idx=len(arms)+1;root=Vector((side*(44-j*1.5),y+(34 if side<0 else 0),-29+j*.4));g=Geo('Arm_'+str(idx),root)
         ellipsoid(h,root+Vector((0,0,2)),(10.2,10.8,5.7),0,24,10)
         axis=Vector((side*.45,0,-.89)).normalized()
         ring(h,root+axis*1.0,axis,8.3,1.55,0,40,8)
@@ -507,6 +515,10 @@
         if side<0:dy=[v+5*math.sin(k*1.4+j) for k,v in enumerate(dy)]
         curl=[(6,dy[0],-12),(18-j,dy[1],-26),(30-j*4,dy[2],-39-j*2),(26-j*4,dy[3],-50-j*2),(16+j,dy[4],-54-j+(3 if side<0 else 0))]
         if j==2:curl=[(5,dy[0],-12),(13,dy[1],-23),(28,dy[2],-34),(28,dy[3],-48),(14,dy[4],-59)]
+        if side<0:
+            # A second, lower fan gives six distinct hanging silhouettes, with
+            # different tip heights rather than three mirrored hidden limbs.
+            curl=[(x*1.13,dy,dz*(1.24+.055*j)) for x,dy,dz in curl]
         points=[root]+[root+Vector((side*x,dy,dz)) for x,dy,dz in curl]
         pts=catmull(points,7);N=len(pts)
         rr=[6.5*(1-i/(N-1))+.95 for i in range(N)]
@@ -515,7 +527,7 @@
         for k in range(0,N-2,2):
             a,b=pts[k],pts[min(k+2,N-1)];mid=(a+b)/2;direction=(b-a).normalized();length=(b-a).length
             r=rr[k]+.4
-            tube(g,[a,a+direction*.5,b-direction*.55,b],[r*.91,r*1.08,r*1.02,r*.85],0,14,.88)
+            tube(g,[a,a+direction*.5,b-direction*.55,b],[r*.91,r*1.08,r*1.02,r*.85],0,14,ellipse=.88)
             ring(g,a+direction*.6,direction,r*1.02,.22,1,14,6,.88)
             # One narrow spinal rail down every link; no free-floating greebles.
             lateral=Vector((side,0,0));tube(g,[a+lateral*r*.89,mid+lateral*(r+ .15),b+lateral*r*.79],[.3,.34,.22],2,6)
@@ -544,7 +556,7 @@
             for bb in [-1.15,1.15]:
                 q=p+a*aa+b*bb+n*.35;tube(h,[q,q+n*.10],.12,1,7)
         # Small slit receiver: the ship has no windows or cockpit.
-        q=p+n*.4+b*(-.7);rounded_box(h,q,(.7,.14,.12),4,.045,B)
+        q=p+n*.4+b*(-.7);rounded_box(h,q,(.7,.14,.12),2,.045,B)
     for yy in [-150,-102,-63,-20,20,60,97,132]:
         theta=side*2.04;p=surface(yy,theta,1.5)
         n=Vector((math.sin(theta),0,math.cos(theta)));a=Vector((0,1,0));b=n.cross(a);B=Matrix(((a.x,b.x,n.x),(a.y,b.y,n.y),(a.z,b.z,n.z)))
@@ -585,7 +597,7 @@
 for ob in objs:
     select(ob);mod=ob.modifiers.new('Triangulated runtime surface','TRIANGULATE');bpy.ops.object.modifier_apply(modifier=mod.name)
     if ob==hull:
-        dec=ob.modifiers.new('Runtime surface reduction','DECIMATE');dec.ratio=min(.90,(182000-sum(len(a.data.polygons)*2 for a in objs[1:]))/len(ob.data.polygons));dec.use_collapse_triangulate=True;bpy.ops.object.modifier_apply(modifier=dec.name)
+        dec=ob.modifiers.new('Runtime surface reduction','DECIMATE');dec.ratio=min(.90,(178000-sum(len(a.data.polygons)*2 for a in objs[1:]))/len(ob.data.polygons));dec.use_collapse_triangulate=True;bpy.ops.object.modifier_apply(modifier=dec.name)
     if ob==hull:
         weighted=ob.modifiers.new('Area weighted armour shading','WEIGHTED_NORMAL');weighted.keep_sharp=True;weighted.mode='FACE_AREA_WITH_ANGLE';weighted.weight=35
         bpy.ops.object.modifier_apply(modifier=weighted.name)
@@ -601,7 +613,7 @@
     o=bpy.data.objects.new(name,None);sc.collection.objects.link(o);o.location=worldp(p);o.parent=parent;o.empty_display_size=2;return o
 for i,p in enumerate(THRUSTERS):empty('Thruster_'+str(i+1),p)
 empty('Camera_Chase',(0,315,110))
-empty('Light_Nav_L',(63,5,1))['color']=[1.0,0.0,0.0];empty('Light_Nav_R',(-63,5,1))['color']=[0.0,1.0,0.0];empty('Light_Beacon',(0,34,50))['color']=[1.0,.12,.0]
+empty('Light_Nav_L',(63,5,1))['color']=[1.0,0.0,0.0];empty('Light_Nav_R',(-63,5,1))['color']=[0.0,1.0,0.0];empty('Light_Beacon',surface(34,0,5))['color']=[1.0,.12,.0]
 asset=[o for o in sc.objects]
 bpy.context.view_layer.update()
 tri=sum(len(o.data.polygons) for o in objs)
@@ -619,10 +631,11 @@
 area('Cool fill',(-190,-50,70),480000,230,(.51,.68,1))
 area('Aft rim',(100,220,200),1250000,170,(.68,.8,1))
 area('Under bounce',(40,-80,-200),290000,220,(.64,.72,.9))
+area('Arm reflection',(220,-160,-120),650000,220,(.73,.82,1),target=(0,20,-40))
 camd=bpy.data.cameras.new('Render camera');cam=bpy.data.objects.new('Render camera',camd);sc.collection.objects.link(cam);sc.camera=cam;camd.clip_end=3000
 
 def camera(kind='hero'):
-    if kind=='hero':pos=(620,-460,180);target=(0,-6,-3);camd.type='ORTHO';camd.ortho_scale=470
+    if kind=='hero':pos=(510,-665,195);target=(0,-6,-3);camd.type='ORTHO';camd.ortho_scale=440
     elif kind=='side':pos=(650,0,24);target=(0,0,-7);camd.type='ORTHO';camd.ortho_scale=466
     elif kind=='rear':pos=(325,490,180);target=(0,25,-3);camd.type='ORTHO';camd.ortho_scale=450
     else:pos=(139,-234,54);target=(34,-150,0);camd.type='ORTHO';camd.ortho_scale=130
@@ -701,7 +714,7 @@
 'Materials: Paint, Titanium, HeatScorched, Recess, Lamps, Engines; Paint neutral texture × linear faction colour, default [0.10, 0.11, 0.10].',
 'Cycles GPU baked tiling sets: 1024² base-colour and Paint normal; shared 512² metal normals; 512² ORM; 8 m world-scale UV repeats; no unique hull atlas.',
 'Poly Haven CC0 IDs: metal_plate, metal_plate_02, rusty_metal_02; https://polyhaven.com/license ; https://polyhaven.com/a/metal_plate ; https://polyhaven.com/a/metal_plate_02 ; https://polyhaven.com/a/rusty_metal_02 .',
-'Reference differences: six larger harvesting arms as requested, bespoke overlapping armour layout and three recessed rear nozzles; no windows, lettering or logos.'
+'Reference differences: six harvesting arms as requested, cleaner broad armour plates, bespoke vent fairings and three recessed rear nozzles; no windows, lettering or logos.'
 ])+'\n')
 # Clay first: verifies actual built silhouettes before the material presentation.
 camera();clay=bpy.data.materials.new('QA clay');clay.diffuse_color=(.36,.36,.36,1);clay.use_nodes=True;clay.node_tree.nodes['Principled BSDF'].inputs['Roughness'].default_value=.72;clay.node_tree.nodes['Principled BSDF'].inputs['Base Color'].default_value=(.36,.36,.36,1)

codex
The clean rebuild is complete: 180,472 triangles, six materials, and an 11.82 MB GLB. It passes glTF validation with no errors or warnings and loads successfully in the browser. I’m checking the final renders, paint variants, and arm pivots before delivery.
hook: PreToolUse
hook: PreToolUse Completed
hook: PreToolUse
hook: PreToolUse Completed
hook: PreToolUse
hook: PreToolUse Completed
hook: PreToolUse
hook: PreToolUse Completed
diff --git a/jobs/alien-harvester-v1/build_alien-harvester.py b/jobs/alien-harvester-v1/build_alien-harvester.py
index 2fd1298f86ec659e97961d76bdbc9f692a926df6..57f69696c1bb60d37c2615501f86a75a47bda397
--- a/jobs/alien-harvester-v1/build_alien-harvester.py
+++ b/jobs/alien-harvester-v1/build_alien-harvester.py
@@ -161,7 +161,7 @@
 # Identical metal stock normal bakes share one image in the delivered GLB.
 MATS[3].node_tree.nodes['Normal'].image=MATS[1].node_tree.nodes['Normal'].image
 
-for name,col,strength in [('Lamps',(1,.15,.008,1),2.3),('Engines',(1,.22,.018,1),2.2)]:
+for name,col,strength in [('Lamps',(1,.18,.004,1),1.8),('Engines',(1,.24,.009,1),1.8)]:
     m=bpy.data.materials.new(name);m.use_nodes=True;p=m.node_tree.nodes.get('Principled BSDF');p.inputs['Base Color'].default_value=col;p.inputs['Roughness'].default_value=.34;p.inputs['Metallic'].default_value=.3;p.inputs['Emission Color'].default_value=col;p.inputs['Emission Strength'].default_value=strength;MATS.append(m)
 
 class Geo:
@@ -271,7 +271,11 @@
     for i in range(len(profile)-1):
         a,b=profile[i:i+2]
         if a[0]<=y<=b[0]:
-            t=(y-a[0])/(b[0]-a[0]);t=t*t*(3-2*t);return tuple(a[k]*(1-t)+b[k]*t for k in range(1,4))
+            # C1-continuous loft: no flattened shoulder or pinched ring at each
+            # control station, and the overlaid armour uses the identical skin.
+            prev=profile[max(0,i-1)];nxt=profile[min(len(profile)-1,i+2)]
+            span=b[0]-a[0];t=(y-a[0])/span
+            return tuple((2*t**3-3*t*t+1)*a[k]+(t**3-2*t*t+t)*span*(b[k]-prev[k])/(b[0]-prev[0])+(-2*t**3+3*t*t)*b[k]+(t**3-t*t)*span*(nxt[k]-a[k])/(nxt[0]-a[0]) for k in range(1,4))
     return profile[0][1:] if y<profile[0][0] else profile[-1][1:]
 def surface(y,t,offset=0):
     w,z,c=shape(y);return Vector(((w*1.05+offset)*math.sin(t),y,c+(z*1.30+offset)*math.cos(t)))
@@ -350,8 +354,10 @@
     if cy>0:raw=[(-L*.53,-H*.29),(-L*.36,H*.45),(L*.41,H*.42),(L*.52,H*.23),(L*.45,-H*.31),(L*.21,-H*.46),(-L*.35,-H*.43)]
     p2=catmull([(y,0,z) for y,z in raw+[raw[0],raw[1]]],4)[:-4]
     p2=p2[:-1] if (p2[0]-p2[-1]).length<.01 else p2
-    cx=shape(cy)[0]*1.05-.5
-    ringspec=[(.96,0), (1.08,2.3),(1.04,5.4),(.87,6.5),(.79,4.8),(.79,1.8)]
+    # Seat the back into the shell, but keep the entire opening in front of all
+    # overlapping armour, including the broad shoulder at the forward end.
+    cx=max(shape(cy-L*.58+i*L*1.16/32)[0] for i in range(33))*1.05+3.3
+    ringspec=[(.96,-8.0), (1.08,1.2),(1.04,5.4),(.87,6.5),(.79,4.8),(.79,1.8)]
     vs=[];n=len(p2)
     for scale,depth in ringspec:
         for p in p2:vs.append((sign*(cx+depth),cy+p.x*scale,cz+p.z*scale))
@@ -412,8 +418,8 @@
     for j in range(6):
         u=j/5;r=26.1-7*u;a=t+.085*u;pts.append((r*math.cos(a),-201+11*u,r*.89*math.sin(a)))
     tube(h,pts,[.90,1.05,.98,.81,.54,.23],2,9)
-    lit=[Vector(p)+Vector((-.16*math.cos(t),-.72,-.16*math.sin(t))) for p in pts]
-    tube(h,lit,[.29,.46,.44,.38,.24,.08],4,7)
+    lit=[Vector(p)+Vector((-.16*math.cos(t),-.98,-.16*math.sin(t))) for p in pts]
+    tube(h,lit,[.46,.65,.61,.47,.27,.08],4,8)
     # Dark rib continuing down the gullet from each luminous tooth.
     pts2=[]
     for j in range(6):
@@ -454,21 +460,23 @@
         theta=row*.43;base=surface(yy+row*3,theta,2.0);ht=(23 if row==0 else 18)*math.sin((i+1)/9*math.pi)**.5*(1+.10*math.sin(i*2.7))
         pts=catmull([base,base+Vector((row*2,3,ht*.4)),base+Vector((row*5,11,ht*.78)),base+Vector((row*7,21,ht))],5)
         rr=[3.6*(1-j/(len(pts)-1))**1.05+.035 for j in range(len(pts))]
-        tube(h,pts,rr,2,10,.66);ellipsoid(h,base,(5.3,7.8,2.8),0,18,8)
+        tube(h,pts,rr,2,12,ellipse=.66);ellipsoid(h,base,(5.3,7.8,2.8),0,18,8)
         ring(h,base+Vector((0,0,1.8)),(0,0,1),4.1,.6,2,24,7,1.25)
         tube(h,[base+Vector((row*2,0,1)),base+Vector((row*3,4,ht*.36)),base+Vector((row*5,11,ht*.7))],[.35,.28,.05],1,6)
 
 # Tail split vanes around the engine cluster: swept, no familiar human ship tail.
 for s in [-1,1]:
     for zz in [-14,15]:
-        pts=catmull([(s*28,132,zz),(s*31,163,zz*1.1),(s*26,189,zz*1.08),(s*21,211,zz*.9)],6)
-        rr=[6*(1-i/(len(pts)-1))**.8+.07 for i in range(len(pts))];tube(h,pts,rr,0,14,.58)
+        pts=catmull([(s*28,132,zz),(s*31,163,zz*1.1),(s*26,198,zz*1.08),(s*21,226,zz*.9)],6)
+        rr=[6*(1-i/(len(pts)-1))**.8+.07 for i in range(len(pts))];tube(h,pts,rr,0,14,ellipse=.58)
         tube(h,[p+Vector((0,0,2.2 if zz>0 else -2.2)) for p in pts[:-3]],[.30]*len(pts[:-3]),1,6)
 
 # Three main engines, bevelled ring exits, recessed glowing interiors.
 THRUSTERS=[]
-for i,(x,z,r,end) in enumerate([(-24,-7,12,196),(24,-7,12,196),(0,15,9,201)]):
-    tube(h,[(x,133,z),(x,147,z),(x,169,z),(x,end-4,z)],[r*.83,r*1.21,r*1.1,r],0,48)
+for i,(x,z,r,end) in enumerate([(-24,-7,12,214),(24,-7,12,214),(0,15,9,218)]):
+    # Nozzles extend clear of the tail skin, with an open casing and a closed
+    # emissive bowl. No hidden cap may cut across the glowing exit aperture.
+    tube(h,[(x,133,z),(x,147,z),(x,169,z),(x,end-4,z)],[r*.83,r*1.21,r*1.1,r],0,48,cap=False)
     ring(h,(x,151,z),(0,1,0),r*1.16,.9,2,48,8)
     # Exposed hot chamber between overlapping casing collars, visible from the side.
     for yy in [165,167.3,169.6,171.9]:ring(h,(x,yy,z),(0,1,0),r*1.115,.82,5,48,6)
@@ -497,7 +505,7 @@
 arms=[]
 for side in [-1,1]:
     for j,y in enumerate([-54,5,64]):
-        idx=len(arms)+1;root=Vector((side*(44-j*1.5),y+(24 if side<0 else 0),-29+j*.4));g=Geo('Arm_'+str(idx),root)
+        idx=len(arms)+1;root=Vector((side*(44-j*1.5),y+(34 if side<0 else 0),-29+j*.4));g=Geo('Arm_'+str(idx),root)
         ellipsoid(h,root+Vector((0,0,2)),(10.2,10.8,5.7),0,24,10)
         axis=Vector((side*.45,0,-.89)).normalized()
         ring(h,root+axis*1.0,axis,8.3,1.55,0,40,8)
@@ -507,6 +515,10 @@
         if side<0:dy=[v+5*math.sin(k*1.4+j) for k,v in enumerate(dy)]
         curl=[(6,dy[0],-12),(18-j,dy[1],-26),(30-j*4,dy[2],-39-j*2),(26-j*4,dy[3],-50-j*2),(16+j,dy[4],-54-j+(3 if side<0 else 0))]
         if j==2:curl=[(5,dy[0],-12),(13,dy[1],-23),(28,dy[2],-34),(28,dy[3],-48),(14,dy[4],-59)]
+        if side<0:
+            # A second, lower fan gives six distinct hanging silhouettes, with
+            # different tip heights rather than three mirrored hidden limbs.
+            curl=[(x*1.13,dy,dz*(1.24+.055*j)) for x,dy,dz in curl]
         points=[root]+[root+Vector((side*x,dy,dz)) for x,dy,dz in curl]
         pts=catmull(points,7);N=len(pts)
         rr=[6.5*(1-i/(N-1))+.95 for i in range(N)]
@@ -515,7 +527,7 @@
         for k in range(0,N-2,2):
             a,b=pts[k],pts[min(k+2,N-1)];mid=(a+b)/2;direction=(b-a).normalized();length=(b-a).length
             r=rr[k]+.4
-            tube(g,[a,a+direction*.5,b-direction*.55,b],[r*.91,r*1.08,r*1.02,r*.85],0,14,.88)
+            tube(g,[a,a+direction*.5,b-direction*.55,b],[r*.91,r*1.08,r*1.02,r*.85],0,14,ellipse=.88)
             ring(g,a+direction*.6,direction,r*1.02,.22,1,14,6,.88)
             # One narrow spinal rail down every link; no free-floating greebles.
             lateral=Vector((side,0,0));tube(g,[a+lateral*r*.89,mid+lateral*(r+ .15),b+lateral*r*.79],[.3,.34,.22],2,6)
@@ -544,7 +556,7 @@
             for bb in [-1.15,1.15]:
                 q=p+a*aa+b*bb+n*.35;tube(h,[q,q+n*.10],.12,1,7)
         # Small slit receiver: the ship has no windows or cockpit.
-        q=p+n*.4+b*(-.7);rounded_box(h,q,(.7,.14,.12),4,.045,B)
+        q=p+n*.4+b*(-.7);rounded_box(h,q,(.7,.14,.12),2,.045,B)
     for yy in [-150,-102,-63,-20,20,60,97,132]:
         theta=side*2.04;p=surface(yy,theta,1.5)
         n=Vector((math.sin(theta),0,math.cos(theta)));a=Vector((0,1,0));b=n.cross(a);B=Matrix(((a.x,b.x,n.x),(a.y,b.y,n.y),(a.z,b.z,n.z)))
@@ -585,7 +597,7 @@
 for ob in objs:
     select(ob);mod=ob.modifiers.new('Triangulated runtime surface','TRIANGULATE');bpy.ops.object.modifier_apply(modifier=mod.name)
     if ob==hull:
-        dec=ob.modifiers.new('Runtime surface reduction','DECIMATE');dec.ratio=min(.90,(182000-sum(len(a.data.polygons)*2 for a in objs[1:]))/len(ob.data.polygons));dec.use_collapse_triangulate=True;bpy.ops.object.modifier_apply(modifier=dec.name)
+        dec=ob.modifiers.new('Runtime surface reduction','DECIMATE');dec.ratio=min(.90,(178000-sum(len(a.data.polygons)*2 for a in objs[1:]))/len(ob.data.polygons));dec.use_collapse_triangulate=True;bpy.ops.object.modifier_apply(modifier=dec.name)
     if ob==hull:
         weighted=ob.modifiers.new('Area weighted armour shading','WEIGHTED_NORMAL');weighted.keep_sharp=True;weighted.mode='FACE_AREA_WITH_ANGLE';weighted.weight=35
         bpy.ops.object.modifier_apply(modifier=weighted.name)
@@ -601,7 +613,7 @@
     o=bpy.data.objects.new(name,None);sc.collection.objects.link(o);o.location=worldp(p);o.parent=parent;o.empty_display_size=2;return o
 for i,p in enumerate(THRUSTERS):empty('Thruster_'+str(i+1),p)
 empty('Camera_Chase',(0,315,110))
-empty('Light_Nav_L',(63,5,1))['color']=[1.0,0.0,0.0];empty('Light_Nav_R',(-63,5,1))['color']=[0.0,1.0,0.0];empty('Light_Beacon',(0,34,50))['color']=[1.0,.12,.0]
+empty('Light_Nav_L',(63,5,1))['color']=[1.0,0.0,0.0];empty('Light_Nav_R',(-63,5,1))['color']=[0.0,1.0,0.0];empty('Light_Beacon',surface(34,0,5))['color']=[1.0,.12,.0]
 asset=[o for o in sc.objects]
 bpy.context.view_layer.update()
 tri=sum(len(o.data.polygons) for o in objs)
@@ -619,10 +631,11 @@
 area('Cool fill',(-190,-50,70),480000,230,(.51,.68,1))
 area('Aft rim',(100,220,200),1250000,170,(.68,.8,1))
 area('Under bounce',(40,-80,-200),290000,220,(.64,.72,.9))
+area('Arm reflection',(220,-160,-120),650000,220,(.73,.82,1),target=(0,20,-40))
 camd=bpy.data.cameras.new('Render camera');cam=bpy.data.objects.new('Render camera',camd);sc.collection.objects.link(cam);sc.camera=cam;camd.clip_end=3000
 
 def camera(kind='hero'):
-    if kind=='hero':pos=(620,-460,180);target=(0,-6,-3);camd.type='ORTHO';camd.ortho_scale=470
+    if kind=='hero':pos=(510,-665,195);target=(0,-6,-3);camd.type='ORTHO';camd.ortho_scale=440
     elif kind=='side':pos=(650,0,24);target=(0,0,-7);camd.type='ORTHO';camd.ortho_scale=466
     elif kind=='rear':pos=(325,490,180);target=(0,25,-3);camd.type='ORTHO';camd.ortho_scale=450
     else:pos=(139,-234,54);target=(34,-150,0);camd.type='ORTHO';camd.ortho_scale=130
@@ -701,7 +714,7 @@
 'Materials: Paint, Titanium, HeatScorched, Recess, Lamps, Engines; Paint neutral texture × linear faction colour, default [0.10, 0.11, 0.10].',
 'Cycles GPU baked tiling sets: 1024² base-colour and Paint normal; shared 512² metal normals; 512² ORM; 8 m world-scale UV repeats; no unique hull atlas.',
 'Poly Haven CC0 IDs: metal_plate, metal_plate_02, rusty_metal_02; https://polyhaven.com/license ; https://polyhaven.com/a/metal_plate ; https://polyhaven.com/a/metal_plate_02 ; https://polyhaven.com/a/rusty_metal_02 .',
-'Reference differences: six larger harvesting arms as requested, bespoke overlapping armour layout and three recessed rear nozzles; no windows, lettering or logos.'
+'Reference differences: six harvesting arms as requested, cleaner broad armour plates, bespoke vent fairings and three recessed rear nozzles; no windows, lettering or logos.'
 ])+'\n')
 # Clay first: verifies actual built silhouettes before the material presentation.
 camera();clay=bpy.data.materials.new('QA clay');clay.diffuse_color=(.36,.36,.36,1);clay.use_nodes=True;clay.node_tree.nodes['Principled BSDF'].inputs['Roughness'].default_value=.72;clay.node_tree.nodes['Principled BSDF'].inputs['Base Color'].default_value=(.36,.36,.36,1)

hook: PreToolUse
hook: PreToolUse
hook: PreToolUse
hook: PreToolUse
hook: PreToolUse Completed
hook: PreToolUse Completed
hook: PreToolUse Completed
hook: PreToolUse Completed
exec
/bin/bash -lc 'cat NOTES.md nodes.json' in /home/claude-agent/forge-build/forge-assets/jobs/alien-harvester-v1
 succeeded in 0ms:
Original 420 × 160 × 120 m alien harvester: layered carapace, intake maw, amber cooling vents, dorsal spines, six pivoted arms and three engine sockets.
180,472 triangles; seven named mesh nodes; GLB 11.27 MiB; nose +Z, up +Y, left +X, metres.
Materials: Paint, Titanium, HeatScorched, Recess, Lamps, Engines; Paint neutral texture × linear faction colour, default [0.10, 0.11, 0.10].
Cycles GPU baked tiling sets: 1024² base-colour and Paint normal; shared 512² metal normals; 512² ORM; 8 m world-scale UV repeats; no unique hull atlas.
Poly Haven CC0 IDs: metal_plate, metal_plate_02, rusty_metal_02; https://polyhaven.com/license ; https://polyhaven.com/a/metal_plate ; https://polyhaven.com/a/metal_plate_02 ; https://polyhaven.com/a/rusty_metal_02 .
Reference differences: six harvesting arms as requested, cleaner broad armour plates, bespoke vent fairings and three recessed rear nozzles; no windows, lettering or logos.
{
  "asset": "alien-harvester",
  "units": "metres",
  "forward": "+Z",
  "up": "+Y",
  "left": "+X",
  "origin": "Hull centre of mass approximation",
  "nodes": {
    "Hull": {
      "position": [
        0.0,
        0.0,
        -0.0
      ],
      "type": "mesh",
      "parent": null
    },
    "Arm_1": {
      "position": [
        -43.86266,
        -17.79161,
        27.63204
      ],
      "type": "mesh",
      "parent": "Hull"
    },
    "Arm_2": {
      "position": [
        -42.36734,
        -17.54621,
        -29.35795
      ],
      "type": "mesh",
      "parent": "Hull"
    },
    "Arm_3": {
      "position": [
        -40.87202,
        -17.30081,
        -86.34794
      ],
      "type": "mesh",
      "parent": "Hull"
    },
    "Arm_4": {
      "position": [
        43.86266,
        -17.79161,
        60.47372
      ],
      "type": "mesh",
      "parent": "Hull"
    },
    "Arm_5": {
      "position": [
        42.36734,
        -17.54621,
        3.48374
      ],
      "type": "mesh",
      "parent": "Hull"
    },
    "Arm_6": {
      "position": [
        40.87202,
        -17.30081,
        -53.50625
      ],
      "type": "mesh",
      "parent": "Hull"
    },
    "Thruster_1": {
      "position": [
        -23.92508,
        -4.29453,
        -198.78242
      ],
      "type": "empty",
      "parent": "Hull"
    },
    "Thruster_2": {
      "position": [
        23.92508,
        -4.29453,
        -198.78242
      ],
      "type": "empty",
      "parent": "Hull"
    },
    "Thruster_3": {
      "position": [
        0.0,
        9.20256,
        -202.64616
      ],
      "type": "empty",
      "parent": "Hull"
    },
    "Camera_Chase": {
      "position": [
        0.0,
        67.48543,
        -295.9552
      ],
      "type": "empty",
      "parent": "Hull"
    },
    "Light_Nav_L": {
      "position": [
        62.80334,
        0.6135,
        3.48374
      ],
      "type": "empty",
      "parent": "Hull"
    },
    "Light_Nav_R": {
      "position": [
        -62.80334,
        0.6135,
        3.48374
      ],
      "type": "empty",
      "parent": "Hull"
    },
    "Light_Beacon": {
      "position": [
        0.0,
        34.41395,
        -24.52829
      ],
      "type": "empty",
      "parent": "Hull"
    }
  },
  "bounding_box": {
    "min": [
      -81.90506,
      -72.31337,
      -210.00208
    ],
    "max": [
      78.09494,
      47.67967,
      210.00002
    ],
    "size": [
      160.0,
      119.993,
      420.0021
    ]
  },
  "axes": {
    "Arm_1": [
      0,
      0,
      1
    ],
    "Arm_2": [
      0,
      0,
      1
    ],
    "Arm_3": [
      0,
      0,
      1
    ],
    "Arm_4": [
      0,
      0,
      1
    ],
    "Arm_5": [
      0,
      0,
      1
    ],
    "Arm_6": [
      0,
      0,
      1
    ]
  },
  "paints": [
    {
      "name": "Obsidian carapace",
      "linear_rgb": [
        0.1,
        0.11,
        0.1
      ]
    },
    {
      "name": "Deep violet",
      "linear_rgb": [
        0.115,
        0.055,
        0.18
      ]
    },
    {
      "name": "Bone white",
      "linear_rgb": [
        0.68,
        0.64,
        0.52
      ]
    },
    {
      "name": "Abyssal teal",
      "linear_rgb": [
        0.025,
        0.18,
        0.175
      ]
    },
    {
      "name": "Oxblood",
      "linear_rgb": [
        0.22,
        0.028,
        0.035
      ]
    },
    {
      "name": "Jade",
      "linear_rgb": [
        0.08,
        0.29,
        0.16
      ]
    }
  ],
  "triangles": 180472,
  "materials": [
    "Paint",
    "Titanium",
    "HeatScorched",
    "Recess",
    "Lamps",
    "Engines"
  ],
  "texture_world_repeat_metres": 8,
  "bake": {
    "engine": "Cycles",
    "device": "GPU",
    "samples": 16,
    "base_size": 1024,
    "normal_sizes": [
      1024,
      512
    ],
    "orm_size": 512,
    "sources": [
      "metal_plate",
      "metal_plate_02",
      "rusty_metal_02"
    ]
  },
  "checks": {
    "moving_transforms_applied": false,
    "pivot_rotation_degrees": 30,
    "export_helpers": false
  }
}
hook: PreToolUse
hook: PreToolUse
hook: PreToolUse
hook: PreToolUse
hook: PreToolUse Completed
hook: PreToolUse Completed
hook: PreToolUse Completed
hook: PreToolUse Completed
exec
/bin/bash -lc 'ls -la' in /home/claude-agent/forge-build/forge-assets/jobs/alien-harvester-v1
 succeeded in 0ms:
total 23820
drwxrwxr-x  3 claude-agent claude-agent     4096 Oct 16 19:12 .
drwxrwxr-x 78 claude-agent claude-agent     4096 Oct 16 18:33 ..
-rw-r--r--  1 claude-agent claude-agent      934 Oct 16 19:21 NOTES.md
-rw-rw-r--  1 claude-agent claude-agent     7490 Oct 16 18:39 PROMPT.txt
drwxrwxr-x  2 claude-agent claude-agent     4096 Oct 16 19:19 __pycache__
-rw-r--r--  1 claude-agent claude-agent 11818956 Oct 16 19:21 alien-harvester.glb
-rw-r--r--  1 claude-agent claude-agent   955698 Oct 16 19:21 arms-test.png
-rw-rw-r--  1 claude-agent claude-agent   746960 Oct 16 19:24 astra.log
-rw-rw-r--  1 claude-agent claude-agent    48255 Oct 16 19:19 build_alien-harvester.py
-rw-r--r--  1 claude-agent claude-agent  1989312 Oct 16 19:21 clay.png
-rw-r--r--  1 claude-agent claude-agent  1121965 Oct 16 19:21 close.png
-rw-r--r--  1 claude-agent claude-agent  2108796 Oct 16 19:21 final.png
-rw-rw-r--  1 claude-agent claude-agent     5184 Oct 16 18:37 job.json
-rw-r--r--  1 claude-agent claude-agent     4069 Oct 16 19:21 nodes.json
-rw-r--r--  1 claude-agent claude-agent  1400425 Oct 16 19:21 paints.png
-rw-r--r--  1 claude-agent claude-agent  1077952 Oct 16 19:21 rear.png
-rw-rw-r--  1 claude-agent claude-agent   846280 Oct 16 18:34 sheet.jpg
-rw-rw-r--  1 claude-agent claude-agent      909 Oct 16 18:37 sheet_prompt.txt
-rw-r--r--  1 claude-agent claude-agent  2183389 Oct 16 19:21 side.png
-rw-rw-r--  1 claude-agent claude-agent       21 Oct 16 18:39 started.txt

diff --git a/jobs/alien-harvester-v1/build_alien-harvester.py b/jobs/alien-harvester-v1/build_alien-harvester.py
index 2fd1298f86ec659e97961d76bdbc9f692a926df6..57f69696c1bb60d37c2615501f86a75a47bda397
--- a/jobs/alien-harvester-v1/build_alien-harvester.py
+++ b/jobs/alien-harvester-v1/build_alien-harvester.py
@@ -161,7 +161,7 @@
 # Identical metal stock normal bakes share one image in the delivered GLB.
 MATS[3].node_tree.nodes['Normal'].image=MATS[1].node_tree.nodes['Normal'].image
 
-for name,col,strength in [('Lamps',(1,.15,.008,1),2.3),('Engines',(1,.22,.018,1),2.2)]:
+for name,col,strength in [('Lamps',(1,.18,.004,1),1.8),('Engines',(1,.24,.009,1),1.8)]:
     m=bpy.data.materials.new(name);m.use_nodes=True;p=m.node_tree.nodes.get('Principled BSDF');p.inputs['Base Color'].default_value=col;p.inputs['Roughness'].default_value=.34;p.inputs['Metallic'].default_value=.3;p.inputs['Emission Color'].default_value=col;p.inputs['Emission Strength'].default_value=strength;MATS.append(m)
 
 class Geo:
@@ -271,7 +271,11 @@
     for i in range(len(profile)-1):
         a,b=profile[i:i+2]
         if a[0]<=y<=b[0]:
-            t=(y-a[0])/(b[0]-a[0]);t=t*t*(3-2*t);return tuple(a[k]*(1-t)+b[k]*t for k in range(1,4))
+            # C1-continuous loft: no flattened shoulder or pinched ring at each
+            # control station, and the overlaid armour uses the identical skin.
+            prev=profile[max(0,i-1)];nxt=profile[min(len(profile)-1,i+2)]
+            span=b[0]-a[0];t=(y-a[0])/span
+            return tuple((2*t**3-3*t*t+1)*a[k]+(t**3-2*t*t+t)*span*(b[k]-prev[k])/(b[0]-prev[0])+(-2*t**3+3*t*t)*b[k]+(t**3-t*t)*span*(nxt[k]-a[k])/(nxt[0]-a[0]) for k in range(1,4))
     return profile[0][1:] if y<profile[0][0] else profile[-1][1:]
 def surface(y,t,offset=0):
     w,z,c=shape(y);return Vector(((w*1.05+offset)*math.sin(t),y,c+(z*1.30+offset)*math.cos(t)))
@@ -350,8 +354,10 @@
     if cy>0:raw=[(-L*.53,-H*.29),(-L*.36,H*.45),(L*.41,H*.42),(L*.52,H*.23),(L*.45,-H*.31),(L*.21,-H*.46),(-L*.35,-H*.43)]
     p2=catmull([(y,0,z) for y,z in raw+[raw[0],raw[1]]],4)[:-4]
     p2=p2[:-1] if (p2[0]-p2[-1]).length<.01 else p2
-    cx=shape(cy)[0]*1.05-.5
-    ringspec=[(.96,0), (1.08,2.3),(1.04,5.4),(.87,6.5),(.79,4.8),(.79,1.8)]
+    # Seat the back into the shell, but keep the entire opening in front of all
+    # overlapping armour, including the broad shoulder at the forward end.
+    cx=max(shape(cy-L*.58+i*L*1.16/32)[0] for i in range(33))*1.05+3.3
+    ringspec=[(.96,-8.0), (1.08,1.2),(1.04,5.4),(.87,6.5),(.79,4.8),(.79,1.8)]
     vs=[];n=len(p2)
     for scale,depth in ringspec:
         for p in p2:vs.append((sign*(cx+depth),cy+p.x*scale,cz+p.z*scale))
@@ -412,8 +418,8 @@
     for j in range(6):
         u=j/5;r=26.1-7*u;a=t+.085*u;pts.append((r*math.cos(a),-201+11*u,r*.89*math.sin(a)))
     tube(h,pts,[.90,1.05,.98,.81,.54,.23],2,9)
-    lit=[Vector(p)+Vector((-.16*math.cos(t),-.72,-.16*math.sin(t))) for p in pts]
-    tube(h,lit,[.29,.46,.44,.38,.24,.08],4,7)
+    lit=[Vector(p)+Vector((-.16*math.cos(t),-.98,-.16*math.sin(t))) for p in pts]
+    tube(h,lit,[.46,.65,.61,.47,.27,.08],4,8)
     # Dark rib continuing down the gullet from each luminous tooth.
     pts2=[]
     for j in range(6):
@@ -454,21 +460,23 @@
         theta=row*.43;base=surface(yy+row*3,theta,2.0);ht=(23 if row==0 else 18)*math.sin((i+1)/9*math.pi)**.5*(1+.10*math.sin(i*2.7))
         pts=catmull([base,base+Vector((row*2,3,ht*.4)),base+Vector((row*5,11,ht*.78)),base+Vector((row*7,21,ht))],5)
         rr=[3.6*(1-j/(len(pts)-1))**1.05+.035 for j in range(len(pts))]
-        tube(h,pts,rr,2,10,.66);ellipsoid(h,base,(5.3,7.8,2.8),0,18,8)
+        tube(h,pts,rr,2,12,ellipse=.66);ellipsoid(h,base,(5.3,7.8,2.8),0,18,8)
         ring(h,base+Vector((0,0,1.8)),(0,0,1),4.1,.6,2,24,7,1.25)
         tube(h,[base+Vector((row*2,0,1)),base+Vector((row*3,4,ht*.36)),base+Vector((row*5,11,ht*.7))],[.35,.28,.05],1,6)
 
 # Tail split vanes around the engine cluster: swept, no familiar human ship tail.
 for s in [-1,1]:
     for zz in [-14,15]:
-        pts=catmull([(s*28,132,zz),(s*31,163,zz*1.1),(s*26,189,zz*1.08),(s*21,211,zz*.9)],6)
-        rr=[6*(1-i/(len(pts)-1))**.8+.07 for i in range(len(pts))];tube(h,pts,rr,0,14,.58)
+        pts=catmull([(s*28,132,zz),(s*31,163,zz*1.1),(s*26,198,zz*1.08),(s*21,226,zz*.9)],6)
+        rr=[6*(1-i/(len(pts)-1))**.8+.07 for i in range(len(pts))];tube(h,pts,rr,0,14,ellipse=.58)
         tube(h,[p+Vector((0,0,2.2 if zz>0 else -2.2)) for p in pts[:-3]],[.30]*len(pts[:-3]),1,6)
 
 # Three main engines, bevelled ring exits, recessed glowing interiors.
 THRUSTERS=[]
-for i,(x,z,r,end) in enumerate([(-24,-7,12,196),(24,-7,12,196),(0,15,9,201)]):
-    tube(h,[(x,133,z),(x,147,z),(x,169,z),(x,end-4,z)],[r*.83,r*1.21,r*1.1,r],0,48)
+for i,(x,z,r,end) in enumerate([(-24,-7,12,214),(24,-7,12,214),(0,15,9,218)]):
+    # Nozzles extend clear of the tail skin, with an open casing and a closed
+    # emissive bowl. No hidden cap may cut across the glowing exit aperture.
+    tube(h,[(x,133,z),(x,147,z),(x,169,z),(x,end-4,z)],[r*.83,r*1.21,r*1.1,r],0,48,cap=False)
     ring(h,(x,151,z),(0,1,0),r*1.16,.9,2,48,8)
     # Exposed hot chamber between overlapping casing collars, visible from the side.
     for yy in [165,167.3,169.6,171.9]:ring(h,(x,yy,z),(0,1,0),r*1.115,.82,5,48,6)
@@ -497,7 +505,7 @@
 arms=[]
 for side in [-1,1]:
     for j,y in enumerate([-54,5,64]):
-        idx=len(arms)+1;root=Vector((side*(44-j*1.5),y+(24 if side<0 else 0),-29+j*.4));g=Geo('Arm_'+str(idx),root)
+        idx=len(arms)+1;root=Vector((side*(44-j*1.5),y+(34 if side<0 else 0),-29+j*.4));g=Geo('Arm_'+str(idx),root)
         ellipsoid(h,root+Vector((0,0,2)),(10.2,10.8,5.7),0,24,10)
         axis=Vector((side*.45,0,-.89)).normalized()
         ring(h,root+axis*1.0,axis,8.3,1.55,0,40,8)
@@ -507,6 +515,10 @@
         if side<0:dy=[v+5*math.sin(k*1.4+j) for k,v in enumerate(dy)]
         curl=[(6,dy[0],-12),(18-j,dy[1],-26),(30-j*4,dy[2],-39-j*2),(26-j*4,dy[3],-50-j*2),(16+j,dy[4],-54-j+(3 if side<0 else 0))]
         if j==2:curl=[(5,dy[0],-12),(13,dy[1],-23),(28,dy[2],-34),(28,dy[3],-48),(14,dy[4],-59)]
+        if side<0:
+            # A second, lower fan gives six distinct hanging silhouettes, with
+            # different tip heights rather than three mirrored hidden limbs.
+            curl=[(x*1.13,dy,dz*(1.24+.055*j)) for x,dy,dz in curl]
         points=[root]+[root+Vector((side*x,dy,dz)) for x,dy,dz in curl]
         pts=catmull(points,7);N=len(pts)
         rr=[6.5*(1-i/(N-1))+.95 for i in range(N)]
@@ -515,7 +527,7 @@
         for k in range(0,N-2,2):
             a,b=pts[k],pts[min(k+2,N-1)];mid=(a+b)/2;direction=(b-a).normalized();length=(b-a).length
             r=rr[k]+.4
-            tube(g,[a,a+direction*.5,b-direction*.55,b],[r*.91,r*1.08,r*1.02,r*.85],0,14,.88)
+            tube(g,[a,a+direction*.5,b-direction*.55,b],[r*.91,r*1.08,r*1.02,r*.85],0,14,ellipse=.88)
             ring(g,a+direction*.6,direction,r*1.02,.22,1,14,6,.88)
             # One narrow spinal rail down every link; no free-floating greebles.
             lateral=Vector((side,0,0));tube(g,[a+lateral*r*.89,mid+lateral*(r+ .15),b+lateral*r*.79],[.3,.34,.22],2,6)
@@ -544,7 +556,7 @@
             for bb in [-1.15,1.15]:
                 q=p+a*aa+b*bb+n*.35;tube(h,[q,q+n*.10],.12,1,7)
         # Small slit receiver: the ship has no windows or cockpit.
-        q=p+n*.4+b*(-.7);rounded_box(h,q,(.7,.14,.12),4,.045,B)
+        q=p+n*.4+b*(-.7);rounded_box(h,q,(.7,.14,.12),2,.045,B)
     for yy in [-150,-102,-63,-20,20,60,97,132]:
         theta=side*2.04;p=surface(yy,theta,1.5)
         n=Vector((math.sin(theta),0,math.cos(theta)));a=Vector((0,1,0));b=n.cross(a);B=Matrix(((a.x,b.x,n.x),(a.y,b.y,n.y),(a.z,b.z,n.z)))
@@ -585,7 +597,7 @@
 for ob in objs:
     select(ob);mod=ob.modifiers.new('Triangulated runtime surface','TRIANGULATE');bpy.ops.object.modifier_apply(modifier=mod.name)
     if ob==hull:
-        dec=ob.modifiers.new('Runtime surface reduction','DECIMATE');dec.ratio=min(.90,(182000-sum(len(a.data.polygons)*2 for a in objs[1:]))/len(ob.data.polygons));dec.use_collapse_triangulate=True;bpy.ops.object.modifier_apply(modifier=dec.name)
+        dec=ob.modifiers.new('Runtime surface reduction','DECIMATE');dec.ratio=min(.90,(178000-sum(len(a.data.polygons)*2 for a in objs[1:]))/len(ob.data.polygons));dec.use_collapse_triangulate=True;bpy.ops.object.modifier_apply(modifier=dec.name)
     if ob==hull:
         weighted=ob.modifiers.new('Area weighted armour shading','WEIGHTED_NORMAL');weighted.keep_sharp=True;weighted.mode='FACE_AREA_WITH_ANGLE';weighted.weight=35
         bpy.ops.object.modifier_apply(modifier=weighted.name)
@@ -601,7 +613,7 @@
     o=bpy.data.objects.new(name,None);sc.collection.objects.link(o);o.location=worldp(p);o.parent=parent;o.empty_display_size=2;return o
 for i,p in enumerate(THRUSTERS):empty('Thruster_'+str(i+1),p)
 empty('Camera_Chase',(0,315,110))
-empty('Light_Nav_L',(63,5,1))['color']=[1.0,0.0,0.0];empty('Light_Nav_R',(-63,5,1))['color']=[0.0,1.0,0.0];empty('Light_Beacon',(0,34,50))['color']=[1.0,.12,.0]
+empty('Light_Nav_L',(63,5,1))['color']=[1.0,0.0,0.0];empty('Light_Nav_R',(-63,5,1))['color']=[0.0,1.0,0.0];empty('Light_Beacon',surface(34,0,5))['color']=[1.0,.12,.0]
 asset=[o for o in sc.objects]
 bpy.context.view_layer.update()
 tri=sum(len(o.data.polygons) for o in objs)
@@ -619,10 +631,11 @@
 area('Cool fill',(-190,-50,70),480000,230,(.51,.68,1))
 area('Aft rim',(100,220,200),1250000,170,(.68,.8,1))
 area('Under bounce',(40,-80,-200),290000,220,(.64,.72,.9))
+area('Arm reflection',(220,-160,-120),650000,220,(.73,.82,1),target=(0,20,-40))
 camd=bpy.data.cameras.new('Render camera');cam=bpy.data.objects.new('Render camera',camd);sc.collection.objects.link(cam);sc.camera=cam;camd.clip_end=3000
 
 def camera(kind='hero'):
-    if kind=='hero':pos=(620,-460,180);target=(0,-6,-3);camd.type='ORTHO';camd.ortho_scale=470
+    if kind=='hero':pos=(510,-665,195);target=(0,-6,-3);camd.type='ORTHO';camd.ortho_scale=440
     elif kind=='side':pos=(650,0,24);target=(0,0,-7);camd.type='ORTHO';camd.ortho_scale=466
     elif kind=='rear':pos=(325,490,180);target=(0,25,-3);camd.type='ORTHO';camd.ortho_scale=450
     else:pos=(139,-234,54);target=(34,-150,0);camd.type='ORTHO';camd.ortho_scale=130
@@ -701,7 +714,7 @@
 'Materials: Paint, Titanium, HeatScorched, Recess, Lamps, Engines; Paint neutral texture × linear faction colour, default [0.10, 0.11, 0.10].',
 'Cycles GPU baked tiling sets: 1024² base-colour and Paint normal; shared 512² metal normals; 512² ORM; 8 m world-scale UV repeats; no unique hull atlas.',
 'Poly Haven CC0 IDs: metal_plate, metal_plate_02, rusty_metal_02; https://polyhaven.com/license ; https://polyhaven.com/a/metal_plate ; https://polyhaven.com/a/metal_plate_02 ; https://polyhaven.com/a/rusty_metal_02 .',
-'Reference differences: six larger harvesting arms as requested, bespoke overlapping armour layout and three recessed rear nozzles; no windows, lettering or logos.'
+'Reference differences: six harvesting arms as requested, cleaner broad armour plates, bespoke vent fairings and three recessed rear nozzles; no windows, lettering or logos.'
 ])+'\n')
 # Clay first: verifies actual built silhouettes before the material presentation.
 camera();clay=bpy.data.materials.new('QA clay');clay.diffuse_color=(.36,.36,.36,1);clay.use_nodes=True;clay.node_tree.nodes['Principled BSDF'].inputs['Roughness'].default_value=.72;clay.node_tree.nodes['Principled BSDF'].inputs['Base Color'].default_value=(.36,.36,.36,1)

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exec
/bin/bash -lc 'cat /tmp/alien-harvester-review/assessment.md' in /home/claude-agent/forge-build/forge-assets/jobs/alien-harvester-v1
 succeeded in 0ms:
Author assessment after final independent visual review:
- Accepted: far-arm silhouette spacing in side view. Staggered far pivots by 34m and restored full longitudinal curl offset; kept longer lower far limbs.
- Accepted: surface pad emitter distracts at close range. Converted its tiny slit to dark metal; retained seated, bolted human-scale maintenance fitting as requested construction detail.
- Resolved before review: rear side vent collision, nose loft pinching, upper-body arch, raised spine sockets, far-claw visibility.
- Disagreed: far arm is physically shorter or fused. Arm_1..6 are separate complete meshes with tested root pivots; far arms are longer, and shorter visible lengths were occlusion in the hero view.
- Disagreed: all dark circular throats violate the reference. Sheet front view explicitly contains a dark centre encircled by amber teeth. Current geometry contains an emissive ring 22m inside the maw; the more frontal final camera exposes it.
- Disagreed: vent louvers cross. After moving the whole vent aperture clear of hull armour, all four louver transforms are identical and actual captures show parallel bars. Bright vertical radiator vanes behind them are separate inset layers.
- Additional author catch: continuous tail skin intersected the engine exits in rear view. Extended engine nozzles beyond the tail skin, opened cylinder casing ends and preserved closed emissive bowls.
- Presentation correction: final hero camera moved from (620,-460,180) to (510,-665,195), ortho 440, and added soft lower-front reflection light. Side, close and rear camera unchanged.

diff --git a/jobs/alien-harvester-v1/build_alien-harvester.py b/jobs/alien-harvester-v1/build_alien-harvester.py
index 2fd1298f86ec659e97961d76bdbc9f692a926df6..57f69696c1bb60d37c2615501f86a75a47bda397
--- a/jobs/alien-harvester-v1/build_alien-harvester.py
+++ b/jobs/alien-harvester-v1/build_alien-harvester.py
@@ -161,7 +161,7 @@
 # Identical metal stock normal bakes share one image in the delivered GLB.
 MATS[3].node_tree.nodes['Normal'].image=MATS[1].node_tree.nodes['Normal'].image
 
-for name,col,strength in [('Lamps',(1,.15,.008,1),2.3),('Engines',(1,.22,.018,1),2.2)]:
+for name,col,strength in [('Lamps',(1,.18,.004,1),1.8),('Engines',(1,.24,.009,1),1.8)]:
     m=bpy.data.materials.new(name);m.use_nodes=True;p=m.node_tree.nodes.get('Principled BSDF');p.inputs['Base Color'].default_value=col;p.inputs['Roughness'].default_value=.34;p.inputs['Metallic'].default_value=.3;p.inputs['Emission Color'].default_value=col;p.inputs['Emission Strength'].default_value=strength;MATS.append(m)
 
 class Geo:
@@ -271,7 +271,11 @@
     for i in range(len(profile)-1):
         a,b=profile[i:i+2]
         if a[0]<=y<=b[0]:
-            t=(y-a[0])/(b[0]-a[0]);t=t*t*(3-2*t);return tuple(a[k]*(1-t)+b[k]*t for k in range(1,4))
+            # C1-continuous loft: no flattened shoulder or pinched ring at each
+            # control station, and the overlaid armour uses the identical skin.
+            prev=profile[max(0,i-1)];nxt=profile[min(len(profile)-1,i+2)]
+            span=b[0]-a[0];t=(y-a[0])/span
+            return tuple((2*t**3-3*t*t+1)*a[k]+(t**3-2*t*t+t)*span*(b[k]-prev[k])/(b[0]-prev[0])+(-2*t**3+3*t*t)*b[k]+(t**3-t*t)*span*(nxt[k]-a[k])/(nxt[0]-a[0]) for k in range(1,4))
     return profile[0][1:] if y<profile[0][0] else profile[-1][1:]
 def surface(y,t,offset=0):
     w,z,c=shape(y);return Vector(((w*1.05+offset)*math.sin(t),y,c+(z*1.30+offset)*math.cos(t)))
@@ -350,8 +354,10 @@
     if cy>0:raw=[(-L*.53,-H*.29),(-L*.36,H*.45),(L*.41,H*.42),(L*.52,H*.23),(L*.45,-H*.31),(L*.21,-H*.46),(-L*.35,-H*.43)]
     p2=catmull([(y,0,z) for y,z in raw+[raw[0],raw[1]]],4)[:-4]
     p2=p2[:-1] if (p2[0]-p2[-1]).length<.01 else p2
-    cx=shape(cy)[0]*1.05-.5
-    ringspec=[(.96,0), (1.08,2.3),(1.04,5.4),(.87,6.5),(.79,4.8),(.79,1.8)]
+    # Seat the back into the shell, but keep the entire opening in front of all
+    # overlapping armour, including the broad shoulder at the forward end.
+    cx=max(shape(cy-L*.58+i*L*1.16/32)[0] for i in range(33))*1.05+3.3
+    ringspec=[(.96,-8.0), (1.08,1.2),(1.04,5.4),(.87,6.5),(.79,4.8),(.79,1.8)]
     vs=[];n=len(p2)
     for scale,depth in ringspec:
         for p in p2:vs.append((sign*(cx+depth),cy+p.x*scale,cz+p.z*scale))
@@ -412,8 +418,8 @@
     for j in range(6):
         u=j/5;r=26.1-7*u;a=t+.085*u;pts.append((r*math.cos(a),-201+11*u,r*.89*math.sin(a)))
     tube(h,pts,[.90,1.05,.98,.81,.54,.23],2,9)
-    lit=[Vector(p)+Vector((-.16*math.cos(t),-.72,-.16*math.sin(t))) for p in pts]
-    tube(h,lit,[.29,.46,.44,.38,.24,.08],4,7)
+    lit=[Vector(p)+Vector((-.16*math.cos(t),-.98,-.16*math.sin(t))) for p in pts]
+    tube(h,lit,[.46,.65,.61,.47,.27,.08],4,8)
     # Dark rib continuing down the gullet from each luminous tooth.
     pts2=[]
     for j in range(6):
@@ -454,21 +460,23 @@
         theta=row*.43;base=surface(yy+row*3,theta,2.0);ht=(23 if row==0 else 18)*math.sin((i+1)/9*math.pi)**.5*(1+.10*math.sin(i*2.7))
         pts=catmull([base,base+Vector((row*2,3,ht*.4)),base+Vector((row*5,11,ht*.78)),base+Vector((row*7,21,ht))],5)
         rr=[3.6*(1-j/(len(pts)-1))**1.05+.035 for j in range(len(pts))]
-        tube(h,pts,rr,2,10,.66);ellipsoid(h,base,(5.3,7.8,2.8),0,18,8)
+        tube(h,pts,rr,2,12,ellipse=.66);ellipsoid(h,base,(5.3,7.8,2.8),0,18,8)
         ring(h,base+Vector((0,0,1.8)),(0,0,1),4.1,.6,2,24,7,1.25)
         tube(h,[base+Vector((row*2,0,1)),base+Vector((row*3,4,ht*.36)),base+Vector((row*5,11,ht*.7))],[.35,.28,.05],1,6)
 
 # Tail split vanes around the engine cluster: swept, no familiar human ship tail.
 for s in [-1,1]:
     for zz in [-14,15]:
-        pts=catmull([(s*28,132,zz),(s*31,163,zz*1.1),(s*26,189,zz*1.08),(s*21,211,zz*.9)],6)
-        rr=[6*(1-i/(len(pts)-1))**.8+.07 for i in range(len(pts))];tube(h,pts,rr,0,14,.58)
+        pts=catmull([(s*28,132,zz),(s*31,163,zz*1.1),(s*26,198,zz*1.08),(s*21,226,zz*.9)],6)
+        rr=[6*(1-i/(len(pts)-1))**.8+.07 for i in range(len(pts))];tube(h,pts,rr,0,14,ellipse=.58)
         tube(h,[p+Vector((0,0,2.2 if zz>0 else -2.2)) for p in pts[:-3]],[.30]*len(pts[:-3]),1,6)
 
 # Three main engines, bevelled ring exits, recessed glowing interiors.
 THRUSTERS=[]
-for i,(x,z,r,end) in enumerate([(-24,-7,12,196),(24,-7,12,196),(0,15,9,201)]):
-    tube(h,[(x,133,z),(x,147,z),(x,169,z),(x,end-4,z)],[r*.83,r*1.21,r*1.1,r],0,48)
+for i,(x,z,r,end) in enumerate([(-24,-7,12,214),(24,-7,12,214),(0,15,9,218)]):
+    # Nozzles extend clear of the tail skin, with an open casing and a closed
+    # emissive bowl. No hidden cap may cut across the glowing exit aperture.
+    tube(h,[(x,133,z),(x,147,z),(x,169,z),(x,end-4,z)],[r*.83,r*1.21,r*1.1,r],0,48,cap=False)
     ring(h,(x,151,z),(0,1,0),r*1.16,.9,2,48,8)
     # Exposed hot chamber between overlapping casing collars, visible from the side.
     for yy in [165,167.3,169.6,171.9]:ring(h,(x,yy,z),(0,1,0),r*1.115,.82,5,48,6)
@@ -497,7 +505,7 @@
 arms=[]
 for side in [-1,1]:
     for j,y in enumerate([-54,5,64]):
-        idx=len(arms)+1;root=Vector((side*(44-j*1.5),y+(24 if side<0 else 0),-29+j*.4));g=Geo('Arm_'+str(idx),root)
+        idx=len(arms)+1;root=Vector((side*(44-j*1.5),y+(34 if side<0 else 0),-29+j*.4));g=Geo('Arm_'+str(idx),root)
         ellipsoid(h,root+Vector((0,0,2)),(10.2,10.8,5.7),0,24,10)
         axis=Vector((side*.45,0,-.89)).normalized()
         ring(h,root+axis*1.0,axis,8.3,1.55,0,40,8)
@@ -507,6 +515,10 @@
         if side<0:dy=[v+5*math.sin(k*1.4+j) for k,v in enumerate(dy)]
         curl=[(6,dy[0],-12),(18-j,dy[1],-26),(30-j*4,dy[2],-39-j*2),(26-j*4,dy[3],-50-j*2),(16+j,dy[4],-54-j+(3 if side<0 else 0))]
         if j==2:curl=[(5,dy[0],-12),(13,dy[1],-23),(28,dy[2],-34),(28,dy[3],-48),(14,dy[4],-59)]
+        if side<0:
+            # A second, lower fan gives six distinct hanging silhouettes, with
+            # different tip heights rather than three mirrored hidden limbs.
+            curl=[(x*1.13,dy,dz*(1.24+.055*j)) for x,dy,dz in curl]
         points=[root]+[root+Vector((side*x,dy,dz)) for x,dy,dz in curl]
         pts=catmull(points,7);N=len(pts)
         rr=[6.5*(1-i/(N-1))+.95 for i in range(N)]
@@ -515,7 +527,7 @@
         for k in range(0,N-2,2):
             a,b=pts[k],pts[min(k+2,N-1)];mid=(a+b)/2;direction=(b-a).normalized();length=(b-a).length
             r=rr[k]+.4
-            tube(g,[a,a+direction*.5,b-direction*.55,b],[r*.91,r*1.08,r*1.02,r*.85],0,14,.88)
+            tube(g,[a,a+direction*.5,b-direction*.55,b],[r*.91,r*1.08,r*1.02,r*.85],0,14,ellipse=.88)
             ring(g,a+direction*.6,direction,r*1.02,.22,1,14,6,.88)
             # One narrow spinal rail down every link; no free-floating greebles.
             lateral=Vector((side,0,0));tube(g,[a+lateral*r*.89,mid+lateral*(r+ .15),b+lateral*r*.79],[.3,.34,.22],2,6)
@@ -544,7 +556,7 @@
             for bb in [-1.15,1.15]:
                 q=p+a*aa+b*bb+n*.35;tube(h,[q,q+n*.10],.12,1,7)
         # Small slit receiver: the ship has no windows or cockpit.
-        q=p+n*.4+b*(-.7);rounded_box(h,q,(.7,.14,.12),4,.045,B)
+        q=p+n*.4+b*(-.7);rounded_box(h,q,(.7,.14,.12),2,.045,B)
     for yy in [-150,-102,-63,-20,20,60,97,132]:
         theta=side*2.04;p=surface(yy,theta,1.5)
         n=Vector((math.sin(theta),0,math.cos(theta)));a=Vector((0,1,0));b=n.cross(a);B=Matrix(((a.x,b.x,n.x),(a.y,b.y,n.y),(a.z,b.z,n.z)))
@@ -585,7 +597,7 @@
 for ob in objs:
     select(ob);mod=ob.modifiers.new('Triangulated runtime surface','TRIANGULATE');bpy.ops.object.modifier_apply(modifier=mod.name)
     if ob==hull:
-        dec=ob.modifiers.new('Runtime surface reduction','DECIMATE');dec.ratio=min(.90,(182000-sum(len(a.data.polygons)*2 for a in objs[1:]))/len(ob.data.polygons));dec.use_collapse_triangulate=True;bpy.ops.object.modifier_apply(modifier=dec.name)
+        dec=ob.modifiers.new('Runtime surface reduction','DECIMATE');dec.ratio=min(.90,(178000-sum(len(a.data.polygons)*2 for a in objs[1:]))/len(ob.data.polygons));dec.use_collapse_triangulate=True;bpy.ops.object.modifier_apply(modifier=dec.name)
     if ob==hull:
         weighted=ob.modifiers.new('Area weighted armour shading','WEIGHTED_NORMAL');weighted.keep_sharp=True;weighted.mode='FACE_AREA_WITH_ANGLE';weighted.weight=35
         bpy.ops.object.modifier_apply(modifier=weighted.name)
@@ -601,7 +613,7 @@
     o=bpy.data.objects.new(name,None);sc.collection.objects.link(o);o.location=worldp(p);o.parent=parent;o.empty_display_size=2;return o
 for i,p in enumerate(THRUSTERS):empty('Thruster_'+str(i+1),p)
 empty('Camera_Chase',(0,315,110))
-empty('Light_Nav_L',(63,5,1))['color']=[1.0,0.0,0.0];empty('Light_Nav_R',(-63,5,1))['color']=[0.0,1.0,0.0];empty('Light_Beacon',(0,34,50))['color']=[1.0,.12,.0]
+empty('Light_Nav_L',(63,5,1))['color']=[1.0,0.0,0.0];empty('Light_Nav_R',(-63,5,1))['color']=[0.0,1.0,0.0];empty('Light_Beacon',surface(34,0,5))['color']=[1.0,.12,.0]
 asset=[o for o in sc.objects]
 bpy.context.view_layer.update()
 tri=sum(len(o.data.polygons) for o in objs)
@@ -619,10 +631,11 @@
 area('Cool fill',(-190,-50,70),480000,230,(.51,.68,1))
 area('Aft rim',(100,220,200),1250000,170,(.68,.8,1))
 area('Under bounce',(40,-80,-200),290000,220,(.64,.72,.9))
+area('Arm reflection',(220,-160,-120),650000,220,(.73,.82,1),target=(0,20,-40))
 camd=bpy.data.cameras.new('Render camera');cam=bpy.data.objects.new('Render camera',camd);sc.collection.objects.link(cam);sc.camera=cam;camd.clip_end=3000
 
 def camera(kind='hero'):
-    if kind=='hero':pos=(620,-460,180);target=(0,-6,-3);camd.type='ORTHO';camd.ortho_scale=470
+    if kind=='hero':pos=(510,-665,195);target=(0,-6,-3);camd.type='ORTHO';camd.ortho_scale=440
     elif kind=='side':pos=(650,0,24);target=(0,0,-7);camd.type='ORTHO';camd.ortho_scale=466
     elif kind=='rear':pos=(325,490,180);target=(0,25,-3);camd.type='ORTHO';camd.ortho_scale=450
     else:pos=(139,-234,54);target=(34,-150,0);camd.type='ORTHO';camd.ortho_scale=130
@@ -701,7 +714,7 @@
 'Materials: Paint, Titanium, HeatScorched, Recess, Lamps, Engines; Paint neutral texture × linear faction colour, default [0.10, 0.11, 0.10].',
 'Cycles GPU baked tiling sets: 1024² base-colour and Paint normal; shared 512² metal normals; 512² ORM; 8 m world-scale UV repeats; no unique hull atlas.',
 'Poly Haven CC0 IDs: metal_plate, metal_plate_02, rusty_metal_02; https://polyhaven.com/license ; https://polyhaven.com/a/metal_plate ; https://polyhaven.com/a/metal_plate_02 ; https://polyhaven.com/a/rusty_metal_02 .',
-'Reference differences: six larger harvesting arms as requested, bespoke overlapping armour layout and three recessed rear nozzles; no windows, lettering or logos.'
+'Reference differences: six harvesting arms as requested, cleaner broad armour plates, bespoke vent fairings and three recessed rear nozzles; no windows, lettering or logos.'
 ])+'\n')
 # Clay first: verifies actual built silhouettes before the material presentation.
 camera();clay=bpy.data.materials.new('QA clay');clay.diffuse_color=(.36,.36,.36,1);clay.use_nodes=True;clay.node_tree.nodes['Principled BSDF'].inputs['Roughness'].default_value=.72;clay.node_tree.nodes['Principled BSDF'].inputs['Base Color'].default_value=(.36,.36,.36,1)

codex
The six paint variants recolour correctly, and all six arms stay attached when rotated 30° at their root pivots in both Blender and the exported GLB. The final views retain the maw, vents, spines, and layered hull; the armour is cleaner and broader than the painted reference, as recorded in `NOTES.md`. I’m removing the temporary inspection files.
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exec
/bin/bash -lc "python3 - <<'PY'
from pathlib import Path
import shutil
root=Path('/home/claude-agent/forge-build/forge-assets/jobs/alien-harvester-v1')
out=Path('/tmp/alien-harvester-review/final')
out.mkdir(parents=True,exist_ok=True)
for name in ['close.png','rear.png','arms-test.png']:
    src=root/name
    if src.exists(): shutil.move(str(src),str(out/name))
cache=root/'__pycache__'
if cache.exists(): shutil.rmtree(cache)
print('Inspection images archived; helper cache removed.')
PY" in /home/claude-agent/forge-build/forge-assets/jobs/alien-harvester-v1
 succeeded in 0ms:
Inspection images archived; helper cache removed.

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exec
/bin/bash -lc 'df -h .' in /home/claude-agent/forge-build/forge-assets/jobs/alien-harvester-v1
 succeeded in 0ms:
Filesystem      Size  Used Avail Use% Mounted on
/dev/sda1       150G  138G  6.8G  96% /

 succeeded in 2157574ms:
DEPENDENCIES_VALIDATED
INSTALLATION_COMPLETE
chrome-linux
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diff --git a/jobs/alien-harvester-v1/build_alien-harvester.py b/jobs/alien-harvester-v1/build_alien-harvester.py
index 2fd1298f86ec659e97961d76bdbc9f692a926df6..57f69696c1bb60d37c2615501f86a75a47bda397
--- a/jobs/alien-harvester-v1/build_alien-harvester.py
+++ b/jobs/alien-harvester-v1/build_alien-harvester.py
@@ -161,7 +161,7 @@
 # Identical metal stock normal bakes share one image in the delivered GLB.
 MATS[3].node_tree.nodes['Normal'].image=MATS[1].node_tree.nodes['Normal'].image
 
-for name,col,strength in [('Lamps',(1,.15,.008,1),2.3),('Engines',(1,.22,.018,1),2.2)]:
+for name,col,strength in [('Lamps',(1,.18,.004,1),1.8),('Engines',(1,.24,.009,1),1.8)]:
     m=bpy.data.materials.new(name);m.use_nodes=True;p=m.node_tree.nodes.get('Principled BSDF');p.inputs['Base Color'].default_value=col;p.inputs['Roughness'].default_value=.34;p.inputs['Metallic'].default_value=.3;p.inputs['Emission Color'].default_value=col;p.inputs['Emission Strength'].default_value=strength;MATS.append(m)
 
 class Geo:
@@ -271,7 +271,11 @@
     for i in range(len(profile)-1):
         a,b=profile[i:i+2]
         if a[0]<=y<=b[0]:
-            t=(y-a[0])/(b[0]-a[0]);t=t*t*(3-2*t);return tuple(a[k]*(1-t)+b[k]*t for k in range(1,4))
+            # C1-continuous loft: no flattened shoulder or pinched ring at each
+            # control station, and the overlaid armour uses the identical skin.
+            prev=profile[max(0,i-1)];nxt=profile[min(len(profile)-1,i+2)]
+            span=b[0]-a[0];t=(y-a[0])/span
+            return tuple((2*t**3-3*t*t+1)*a[k]+(t**3-2*t*t+t)*span*(b[k]-prev[k])/(b[0]-prev[0])+(-2*t**3+3*t*t)*b[k]+(t**3-t*t)*span*(nxt[k]-a[k])/(nxt[0]-a[0]) for k in range(1,4))
     return profile[0][1:] if y<profile[0][0] else profile[-1][1:]
 def surface(y,t,offset=0):
     w,z,c=shape(y);return Vector(((w*1.05+offset)*math.sin(t),y,c+(z*1.30+offset)*math.cos(t)))
@@ -350,8 +354,10 @@
     if cy>0:raw=[(-L*.53,-H*.29),(-L*.36,H*.45),(L*.41,H*.42),(L*.52,H*.23),(L*.45,-H*.31),(L*.21,-H*.46),(-L*.35,-H*.43)]
     p2=catmull([(y,0,z) for y,z in raw+[raw[0],raw[1]]],4)[:-4]
     p2=p2[:-1] if (p2[0]-p2[-1]).length<.01 else p2
-    cx=shape(cy)[0]*1.05-.5
-    ringspec=[(.96,0), (1.08,2.3),(1.04,5.4),(.87,6.5),(.79,4.8),(.79,1.8)]
+    # Seat the back into the shell, but keep the entire opening in front of all
+    # overlapping armour, including the broad shoulder at the forward end.
+    cx=max(shape(cy-L*.58+i*L*1.16/32)[0] for i in range(33))*1.05+3.3
+    ringspec=[(.96,-8.0), (1.08,1.2),(1.04,5.4),(.87,6.5),(.79,4.8),(.79,1.8)]
     vs=[];n=len(p2)
     for scale,depth in ringspec:
         for p in p2:vs.append((sign*(cx+depth),cy+p.x*scale,cz+p.z*scale))
@@ -412,8 +418,8 @@
     for j in range(6):
         u=j/5;r=26.1-7*u;a=t+.085*u;pts.append((r*math.cos(a),-201+11*u,r*.89*math.sin(a)))
     tube(h,pts,[.90,1.05,.98,.81,.54,.23],2,9)
-    lit=[Vector(p)+Vector((-.16*math.cos(t),-.72,-.16*math.sin(t))) for p in pts]
-    tube(h,lit,[.29,.46,.44,.38,.24,.08],4,7)
+    lit=[Vector(p)+Vector((-.16*math.cos(t),-.98,-.16*math.sin(t))) for p in pts]
+    tube(h,lit,[.46,.65,.61,.47,.27,.08],4,8)
     # Dark rib continuing down the gullet from each luminous tooth.
     pts2=[]
     for j in range(6):
@@ -454,21 +460,23 @@
         theta=row*.43;base=surface(yy+row*3,theta,2.0);ht=(23 if row==0 else 18)*math.sin((i+1)/9*math.pi)**.5*(1+.10*math.sin(i*2.7))
         pts=catmull([base,base+Vector((row*2,3,ht*.4)),base+Vector((row*5,11,ht*.78)),base+Vector((row*7,21,ht))],5)
         rr=[3.6*(1-j/(len(pts)-1))**1.05+.035 for j in range(len(pts))]
-        tube(h,pts,rr,2,10,.66);ellipsoid(h,base,(5.3,7.8,2.8),0,18,8)
+        tube(h,pts,rr,2,12,ellipse=.66);ellipsoid(h,base,(5.3,7.8,2.8),0,18,8)
         ring(h,base+Vector((0,0,1.8)),(0,0,1),4.1,.6,2,24,7,1.25)
         tube(h,[base+Vector((row*2,0,1)),base+Vector((row*3,4,ht*.36)),base+Vector((row*5,11,ht*.7))],[.35,.28,.05],1,6)
 
 # Tail split vanes around the engine cluster: swept, no familiar human ship tail.
 for s in [-1,1]:
     for zz in [-14,15]:
-        pts=catmull([(s*28,132,zz),(s*31,163,zz*1.1),(s*26,189,zz*1.08),(s*21,211,zz*.9)],6)
-        rr=[6*(1-i/(len(pts)-1))**.8+.07 for i in range(len(pts))];tube(h,pts,rr,0,14,.58)
+        pts=catmull([(s*28,132,zz),(s*31,163,zz*1.1),(s*26,198,zz*1.08),(s*21,226,zz*.9)],6)
+        rr=[6*(1-i/(len(pts)-1))**.8+.07 for i in range(len(pts))];tube(h,pts,rr,0,14,ellipse=.58)
         tube(h,[p+Vector((0,0,2.2 if zz>0 else -2.2)) for p in pts[:-3]],[.30]*len(pts[:-3]),1,6)
 
 # Three main engines, bevelled ring exits, recessed glowing interiors.
 THRUSTERS=[]
-for i,(x,z,r,end) in enumerate([(-24,-7,12,196),(24,-7,12,196),(0,15,9,201)]):
-    tube(h,[(x,133,z),(x,147,z),(x,169,z),(x,end-4,z)],[r*.83,r*1.21,r*1.1,r],0,48)
+for i,(x,z,r,end) in enumerate([(-24,-7,12,214),(24,-7,12,214),(0,15,9,218)]):
+    # Nozzles extend clear of the tail skin, with an open casing and a closed
+    # emissive bowl. No hidden cap may cut across the glowing exit aperture.
+    tube(h,[(x,133,z),(x,147,z),(x,169,z),(x,end-4,z)],[r*.83,r*1.21,r*1.1,r],0,48,cap=False)
     ring(h,(x,151,z),(0,1,0),r*1.16,.9,2,48,8)
     # Exposed hot chamber between overlapping casing collars, visible from the side.
     for yy in [165,167.3,169.6,171.9]:ring(h,(x,yy,z),(0,1,0),r*1.115,.82,5,48,6)
@@ -497,7 +505,7 @@
 arms=[]
 for side in [-1,1]:
     for j,y in enumerate([-54,5,64]):
-        idx=len(arms)+1;root=Vector((side*(44-j*1.5),y+(24 if side<0 else 0),-29+j*.4));g=Geo('Arm_'+str(idx),root)
+        idx=len(arms)+1;root=Vector((side*(44-j*1.5),y+(34 if side<0 else 0),-29+j*.4));g=Geo('Arm_'+str(idx),root)
         ellipsoid(h,root+Vector((0,0,2)),(10.2,10.8,5.7),0,24,10)
         axis=Vector((side*.45,0,-.89)).normalized()
         ring(h,root+axis*1.0,axis,8.3,1.55,0,40,8)
@@ -507,6 +515,10 @@
         if side<0:dy=[v+5*math.sin(k*1.4+j) for k,v in enumerate(dy)]
         curl=[(6,dy[0],-12),(18-j,dy[1],-26),(30-j*4,dy[2],-39-j*2),(26-j*4,dy[3],-50-j*2),(16+j,dy[4],-54-j+(3 if side<0 else 0))]
         if j==2:curl=[(5,dy[0],-12),(13,dy[1],-23),(28,dy[2],-34),(28,dy[3],-48),(14,dy[4],-59)]
+        if side<0:
+            # A second, lower fan gives six distinct hanging silhouettes, with
+            # different tip heights rather than three mirrored hidden limbs.
+            curl=[(x*1.13,dy,dz*(1.24+.055*j)) for x,dy,dz in curl]
         points=[root]+[root+Vector((side*x,dy,dz)) for x,dy,dz in curl]
         pts=catmull(points,7);N=len(pts)
         rr=[6.5*(1-i/(N-1))+.95 for i in range(N)]
@@ -515,7 +527,7 @@
         for k in range(0,N-2,2):
             a,b=pts[k],pts[min(k+2,N-1)];mid=(a+b)/2;direction=(b-a).normalized();length=(b-a).length
             r=rr[k]+.4
-            tube(g,[a,a+direction*.5,b-direction*.55,b],[r*.91,r*1.08,r*1.02,r*.85],0,14,.88)
+            tube(g,[a,a+direction*.5,b-direction*.55,b],[r*.91,r*1.08,r*1.02,r*.85],0,14,ellipse=.88)
             ring(g,a+direction*.6,direction,r*1.02,.22,1,14,6,.88)
             # One narrow spinal rail down every link; no free-floating greebles.
             lateral=Vector((side,0,0));tube(g,[a+lateral*r*.89,mid+lateral*(r+ .15),b+lateral*r*.79],[.3,.34,.22],2,6)
@@ -544,7 +556,7 @@
             for bb in [-1.15,1.15]:
                 q=p+a*aa+b*bb+n*.35;tube(h,[q,q+n*.10],.12,1,7)
         # Small slit receiver: the ship has no windows or cockpit.
-        q=p+n*.4+b*(-.7);rounded_box(h,q,(.7,.14,.12),4,.045,B)
+        q=p+n*.4+b*(-.7);rounded_box(h,q,(.7,.14,.12),2,.045,B)
     for yy in [-150,-102,-63,-20,20,60,97,132]:
         theta=side*2.04;p=surface(yy,theta,1.5)
         n=Vector((math.sin(theta),0,math.cos(theta)));a=Vector((0,1,0));b=n.cross(a);B=Matrix(((a.x,b.x,n.x),(a.y,b.y,n.y),(a.z,b.z,n.z)))
@@ -585,7 +597,7 @@
 for ob in objs:
     select(ob);mod=ob.modifiers.new('Triangulated runtime surface','TRIANGULATE');bpy.ops.object.modifier_apply(modifier=mod.name)
     if ob==hull:
-        dec=ob.modifiers.new('Runtime surface reduction','DECIMATE');dec.ratio=min(.90,(182000-sum(len(a.data.polygons)*2 for a in objs[1:]))/len(ob.data.polygons));dec.use_collapse_triangulate=True;bpy.ops.object.modifier_apply(modifier=dec.name)
+        dec=ob.modifiers.new('Runtime surface reduction','DECIMATE');dec.ratio=min(.90,(178000-sum(len(a.data.polygons)*2 for a in objs[1:]))/len(ob.data.polygons));dec.use_collapse_triangulate=True;bpy.ops.object.modifier_apply(modifier=dec.name)
     if ob==hull:
         weighted=ob.modifiers.new('Area weighted armour shading','WEIGHTED_NORMAL');weighted.keep_sharp=True;weighted.mode='FACE_AREA_WITH_ANGLE';weighted.weight=35
         bpy.ops.object.modifier_apply(modifier=weighted.name)
@@ -601,7 +613,7 @@
     o=bpy.data.objects.new(name,None);sc.collection.objects.link(o);o.location=worldp(p);o.parent=parent;o.empty_display_size=2;return o
 for i,p in enumerate(THRUSTERS):empty('Thruster_'+str(i+1),p)
 empty('Camera_Chase',(0,315,110))
-empty('Light_Nav_L',(63,5,1))['color']=[1.0,0.0,0.0];empty('Light_Nav_R',(-63,5,1))['color']=[0.0,1.0,0.0];empty('Light_Beacon',(0,34,50))['color']=[1.0,.12,.0]
+empty('Light_Nav_L',(63,5,1))['color']=[1.0,0.0,0.0];empty('Light_Nav_R',(-63,5,1))['color']=[0.0,1.0,0.0];empty('Light_Beacon',surface(34,0,5))['color']=[1.0,.12,.0]
 asset=[o for o in sc.objects]
 bpy.context.view_layer.update()
 tri=sum(len(o.data.polygons) for o in objs)
@@ -619,10 +631,11 @@
 area('Cool fill',(-190,-50,70),480000,230,(.51,.68,1))
 area('Aft rim',(100,220,200),1250000,170,(.68,.8,1))
 area('Under bounce',(40,-80,-200),290000,220,(.64,.72,.9))
+area('Arm reflection',(220,-160,-120),650000,220,(.73,.82,1),target=(0,20,-40))
 camd=bpy.data.cameras.new('Render camera');cam=bpy.data.objects.new('Render camera',camd);sc.collection.objects.link(cam);sc.camera=cam;camd.clip_end=3000
 
 def camera(kind='hero'):
-    if kind=='hero':pos=(620,-460,180);target=(0,-6,-3);camd.type='ORTHO';camd.ortho_scale=470
+    if kind=='hero':pos=(510,-665,195);target=(0,-6,-3);camd.type='ORTHO';camd.ortho_scale=440
     elif kind=='side':pos=(650,0,24);target=(0,0,-7);camd.type='ORTHO';camd.ortho_scale=466
     elif kind=='rear':pos=(325,490,180);target=(0,25,-3);camd.type='ORTHO';camd.ortho_scale=450
     else:pos=(139,-234,54);target=(34,-150,0);camd.type='ORTHO';camd.ortho_scale=130
@@ -701,7 +714,7 @@
 'Materials: Paint, Titanium, HeatScorched, Recess, Lamps, Engines; Paint neutral texture × linear faction colour, default [0.10, 0.11, 0.10].',
 'Cycles GPU baked tiling sets: 1024² base-colour and Paint normal; shared 512² metal normals; 512² ORM; 8 m world-scale UV repeats; no unique hull atlas.',
 'Poly Haven CC0 IDs: metal_plate, metal_plate_02, rusty_metal_02; https://polyhaven.com/license ; https://polyhaven.com/a/metal_plate ; https://polyhaven.com/a/metal_plate_02 ; https://polyhaven.com/a/rusty_metal_02 .',
-'Reference differences: six larger harvesting arms as requested, bespoke overlapping armour layout and three recessed rear nozzles; no windows, lettering or logos.'
+'Reference differences: six harvesting arms as requested, cleaner broad armour plates, bespoke vent fairings and three recessed rear nozzles; no windows, lettering or logos.'
 ])+'\n')
 # Clay first: verifies actual built silhouettes before the material presentation.
 camera();clay=bpy.data.materials.new('QA clay');clay.diffuse_color=(.36,.36,.36,1);clay.use_nodes=True;clay.node_tree.nodes['Principled BSDF'].inputs['Roughness'].default_value=.72;clay.node_tree.nodes['Principled BSDF'].inputs['Base Color'].default_value=(.36,.36,.36,1)

hook: PreToolUse
hook: PreToolUse Completed
mcp: forge/coord_note started
mcp: forge/coord_note (completed)
hook: PreToolUse
hook: PreToolUse Completed
mcp: forge/coord_release started
mcp: forge/coord_release (completed)
hook: PreToolUse
hook: PreToolUse Completed
mcp: forge/coord_release started
mcp: forge/coord_release (completed)
diff --git a/jobs/alien-harvester-v1/build_alien-harvester.py b/jobs/alien-harvester-v1/build_alien-harvester.py
index 2fd1298f86ec659e97961d76bdbc9f692a926df6..57f69696c1bb60d37c2615501f86a75a47bda397
--- a/jobs/alien-harvester-v1/build_alien-harvester.py
+++ b/jobs/alien-harvester-v1/build_alien-harvester.py
@@ -161,7 +161,7 @@
 # Identical metal stock normal bakes share one image in the delivered GLB.
 MATS[3].node_tree.nodes['Normal'].image=MATS[1].node_tree.nodes['Normal'].image
 
-for name,col,strength in [('Lamps',(1,.15,.008,1),2.3),('Engines',(1,.22,.018,1),2.2)]:
+for name,col,strength in [('Lamps',(1,.18,.004,1),1.8),('Engines',(1,.24,.009,1),1.8)]:
     m=bpy.data.materials.new(name);m.use_nodes=True;p=m.node_tree.nodes.get('Principled BSDF');p.inputs['Base Color'].default_value=col;p.inputs['Roughness'].default_value=.34;p.inputs['Metallic'].default_value=.3;p.inputs['Emission Color'].default_value=col;p.inputs['Emission Strength'].default_value=strength;MATS.append(m)
 
 class Geo:
@@ -271,7 +271,11 @@
     for i in range(len(profile)-1):
         a,b=profile[i:i+2]
         if a[0]<=y<=b[0]:
-            t=(y-a[0])/(b[0]-a[0]);t=t*t*(3-2*t);return tuple(a[k]*(1-t)+b[k]*t for k in range(1,4))
+            # C1-continuous loft: no flattened shoulder or pinched ring at each
+            # control station, and the overlaid armour uses the identical skin.
+            prev=profile[max(0,i-1)];nxt=profile[min(len(profile)-1,i+2)]
+            span=b[0]-a[0];t=(y-a[0])/span
+            return tuple((2*t**3-3*t*t+1)*a[k]+(t**3-2*t*t+t)*span*(b[k]-prev[k])/(b[0]-prev[0])+(-2*t**3+3*t*t)*b[k]+(t**3-t*t)*span*(nxt[k]-a[k])/(nxt[0]-a[0]) for k in range(1,4))
     return profile[0][1:] if y<profile[0][0] else profile[-1][1:]
 def surface(y,t,offset=0):
     w,z,c=shape(y);return Vector(((w*1.05+offset)*math.sin(t),y,c+(z*1.30+offset)*math.cos(t)))
@@ -350,8 +354,10 @@
     if cy>0:raw=[(-L*.53,-H*.29),(-L*.36,H*.45),(L*.41,H*.42),(L*.52,H*.23),(L*.45,-H*.31),(L*.21,-H*.46),(-L*.35,-H*.43)]
     p2=catmull([(y,0,z) for y,z in raw+[raw[0],raw[1]]],4)[:-4]
     p2=p2[:-1] if (p2[0]-p2[-1]).length<.01 else p2
-    cx=shape(cy)[0]*1.05-.5
-    ringspec=[(.96,0), (1.08,2.3),(1.04,5.4),(.87,6.5),(.79,4.8),(.79,1.8)]
+    # Seat the back into the shell, but keep the entire opening in front of all
+    # overlapping armour, including the broad shoulder at the forward end.
+    cx=max(shape(cy-L*.58+i*L*1.16/32)[0] for i in range(33))*1.05+3.3
+    ringspec=[(.96,-8.0), (1.08,1.2),(1.04,5.4),(.87,6.5),(.79,4.8),(.79,1.8)]
     vs=[];n=len(p2)
     for scale,depth in ringspec:
         for p in p2:vs.append((sign*(cx+depth),cy+p.x*scale,cz+p.z*scale))
@@ -412,8 +418,8 @@
     for j in range(6):
         u=j/5;r=26.1-7*u;a=t+.085*u;pts.append((r*math.cos(a),-201+11*u,r*.89*math.sin(a)))
     tube(h,pts,[.90,1.05,.98,.81,.54,.23],2,9)
-    lit=[Vector(p)+Vector((-.16*math.cos(t),-.72,-.16*math.sin(t))) for p in pts]
-    tube(h,lit,[.29,.46,.44,.38,.24,.08],4,7)
+    lit=[Vector(p)+Vector((-.16*math.cos(t),-.98,-.16*math.sin(t))) for p in pts]
+    tube(h,lit,[.46,.65,.61,.47,.27,.08],4,8)
     # Dark rib continuing down the gullet from each luminous tooth.
     pts2=[]
     for j in range(6):
@@ -454,21 +460,23 @@
         theta=row*.43;base=surface(yy+row*3,theta,2.0);ht=(23 if row==0 else 18)*math.sin((i+1)/9*math.pi)**.5*(1+.10*math.sin(i*2.7))
         pts=catmull([base,base+Vector((row*2,3,ht*.4)),base+Vector((row*5,11,ht*.78)),base+Vector((row*7,21,ht))],5)
         rr=[3.6*(1-j/(len(pts)-1))**1.05+.035 for j in range(len(pts))]
-        tube(h,pts,rr,2,10,.66);ellipsoid(h,base,(5.3,7.8,2.8),0,18,8)
+        tube(h,pts,rr,2,12,ellipse=.66);ellipsoid(h,base,(5.3,7.8,2.8),0,18,8)
         ring(h,base+Vector((0,0,1.8)),(0,0,1),4.1,.6,2,24,7,1.25)
         tube(h,[base+Vector((row*2,0,1)),base+Vector((row*3,4,ht*.36)),base+Vector((row*5,11,ht*.7))],[.35,.28,.05],1,6)
 
 # Tail split vanes around the engine cluster: swept, no familiar human ship tail.
 for s in [-1,1]:
     for zz in [-14,15]:
-        pts=catmull([(s*28,132,zz),(s*31,163,zz*1.1),(s*26,189,zz*1.08),(s*21,211,zz*.9)],6)
-        rr=[6*(1-i/(len(pts)-1))**.8+.07 for i in range(len(pts))];tube(h,pts,rr,0,14,.58)
+        pts=catmull([(s*28,132,zz),(s*31,163,zz*1.1),(s*26,198,zz*1.08),(s*21,226,zz*.9)],6)
+        rr=[6*(1-i/(len(pts)-1))**.8+.07 for i in range(len(pts))];tube(h,pts,rr,0,14,ellipse=.58)
         tube(h,[p+Vector((0,0,2.2 if zz>0 else -2.2)) for p in pts[:-3]],[.30]*len(pts[:-3]),1,6)
 
 # Three main engines, bevelled ring exits, recessed glowing interiors.
 THRUSTERS=[]
-for i,(x,z,r,end) in enumerate([(-24,-7,12,196),(24,-7,12,196),(0,15,9,201)]):
-    tube(h,[(x,133,z),(x,147,z),(x,169,z),(x,end-4,z)],[r*.83,r*1.21,r*1.1,r],0,48)
+for i,(x,z,r,end) in enumerate([(-24,-7,12,214),(24,-7,12,214),(0,15,9,218)]):
+    # Nozzles extend clear of the tail skin, with an open casing and a closed
+    # emissive bowl. No hidden cap may cut across the glowing exit aperture.
+    tube(h,[(x,133,z),(x,147,z),(x,169,z),(x,end-4,z)],[r*.83,r*1.21,r*1.1,r],0,48,cap=False)
     ring(h,(x,151,z),(0,1,0),r*1.16,.9,2,48,8)
     # Exposed hot chamber between overlapping casing collars, visible from the side.
     for yy in [165,167.3,169.6,171.9]:ring(h,(x,yy,z),(0,1,0),r*1.115,.82,5,48,6)
@@ -497,7 +505,7 @@
 arms=[]
 for side in [-1,1]:
     for j,y in enumerate([-54,5,64]):
-        idx=len(arms)+1;root=Vector((side*(44-j*1.5),y+(24 if side<0 else 0),-29+j*.4));g=Geo('Arm_'+str(idx),root)
+        idx=len(arms)+1;root=Vector((side*(44-j*1.5),y+(34 if side<0 else 0),-29+j*.4));g=Geo('Arm_'+str(idx),root)
         ellipsoid(h,root+Vector((0,0,2)),(10.2,10.8,5.7),0,24,10)
         axis=Vector((side*.45,0,-.89)).normalized()
         ring(h,root+axis*1.0,axis,8.3,1.55,0,40,8)
@@ -507,6 +515,10 @@
         if side<0:dy=[v+5*math.sin(k*1.4+j) for k,v in enumerate(dy)]
         curl=[(6,dy[0],-12),(18-j,dy[1],-26),(30-j*4,dy[2],-39-j*2),(26-j*4,dy[3],-50-j*2),(16+j,dy[4],-54-j+(3 if side<0 else 0))]
         if j==2:curl=[(5,dy[0],-12),(13,dy[1],-23),(28,dy[2],-34),(28,dy[3],-48),(14,dy[4],-59)]
+        if side<0:
+            # A second, lower fan gives six distinct hanging silhouettes, with
+            # different tip heights rather than three mirrored hidden limbs.
+            curl=[(x*1.13,dy,dz*(1.24+.055*j)) for x,dy,dz in curl]
         points=[root]+[root+Vector((side*x,dy,dz)) for x,dy,dz in curl]
         pts=catmull(points,7);N=len(pts)
         rr=[6.5*(1-i/(N-1))+.95 for i in range(N)]
@@ -515,7 +527,7 @@
         for k in range(0,N-2,2):
             a,b=pts[k],pts[min(k+2,N-1)];mid=(a+b)/2;direction=(b-a).normalized();length=(b-a).length
             r=rr[k]+.4
-            tube(g,[a,a+direction*.5,b-direction*.55,b],[r*.91,r*1.08,r*1.02,r*.85],0,14,.88)
+            tube(g,[a,a+direction*.5,b-direction*.55,b],[r*.91,r*1.08,r*1.02,r*.85],0,14,ellipse=.88)
             ring(g,a+direction*.6,direction,r*1.02,.22,1,14,6,.88)
             # One narrow spinal rail down every link; no free-floating greebles.
             lateral=Vector((side,0,0));tube(g,[a+lateral*r*.89,mid+lateral*(r+ .15),b+lateral*r*.79],[.3,.34,.22],2,6)
@@ -544,7 +556,7 @@
             for bb in [-1.15,1.15]:
                 q=p+a*aa+b*bb+n*.35;tube(h,[q,q+n*.10],.12,1,7)
         # Small slit receiver: the ship has no windows or cockpit.
-        q=p+n*.4+b*(-.7);rounded_box(h,q,(.7,.14,.12),4,.045,B)
+        q=p+n*.4+b*(-.7);rounded_box(h,q,(.7,.14,.12),2,.045,B)
     for yy in [-150,-102,-63,-20,20,60,97,132]:
         theta=side*2.04;p=surface(yy,theta,1.5)
         n=Vector((math.sin(theta),0,math.cos(theta)));a=Vector((0,1,0));b=n.cross(a);B=Matrix(((a.x,b.x,n.x),(a.y,b.y,n.y),(a.z,b.z,n.z)))
@@ -585,7 +597,7 @@
 for ob in objs:
     select(ob);mod=ob.modifiers.new('Triangulated runtime surface','TRIANGULATE');bpy.ops.object.modifier_apply(modifier=mod.name)
     if ob==hull:
-        dec=ob.modifiers.new('Runtime surface reduction','DECIMATE');dec.ratio=min(.90,(182000-sum(len(a.data.polygons)*2 for a in objs[1:]))/len(ob.data.polygons));dec.use_collapse_triangulate=True;bpy.ops.object.modifier_apply(modifier=dec.name)
+        dec=ob.modifiers.new('Runtime surface reduction','DECIMATE');dec.ratio=min(.90,(178000-sum(len(a.data.polygons)*2 for a in objs[1:]))/len(ob.data.polygons));dec.use_collapse_triangulate=True;bpy.ops.object.modifier_apply(modifier=dec.name)
     if ob==hull:
         weighted=ob.modifiers.new('Area weighted armour shading','WEIGHTED_NORMAL');weighted.keep_sharp=True;weighted.mode='FACE_AREA_WITH_ANGLE';weighted.weight=35
         bpy.ops.object.modifier_apply(modifier=weighted.name)
@@ -601,7 +613,7 @@
     o=bpy.data.objects.new(name,None);sc.collection.objects.link(o);o.location=worldp(p);o.parent=parent;o.empty_display_size=2;return o
 for i,p in enumerate(THRUSTERS):empty('Thruster_'+str(i+1),p)
 empty('Camera_Chase',(0,315,110))
-empty('Light_Nav_L',(63,5,1))['color']=[1.0,0.0,0.0];empty('Light_Nav_R',(-63,5,1))['color']=[0.0,1.0,0.0];empty('Light_Beacon',(0,34,50))['color']=[1.0,.12,.0]
+empty('Light_Nav_L',(63,5,1))['color']=[1.0,0.0,0.0];empty('Light_Nav_R',(-63,5,1))['color']=[0.0,1.0,0.0];empty('Light_Beacon',surface(34,0,5))['color']=[1.0,.12,.0]
 asset=[o for o in sc.objects]
 bpy.context.view_layer.update()
 tri=sum(len(o.data.polygons) for o in objs)
@@ -619,10 +631,11 @@
 area('Cool fill',(-190,-50,70),480000,230,(.51,.68,1))
 area('Aft rim',(100,220,200),1250000,170,(.68,.8,1))
 area('Under bounce',(40,-80,-200),290000,220,(.64,.72,.9))
+area('Arm reflection',(220,-160,-120),650000,220,(.73,.82,1),target=(0,20,-40))
 camd=bpy.data.cameras.new('Render camera');cam=bpy.data.objects.new('Render camera',camd);sc.collection.objects.link(cam);sc.camera=cam;camd.clip_end=3000
 
 def camera(kind='hero'):
-    if kind=='hero':pos=(620,-460,180);target=(0,-6,-3);camd.type='ORTHO';camd.ortho_scale=470
+    if kind=='hero':pos=(510,-665,195);target=(0,-6,-3);camd.type='ORTHO';camd.ortho_scale=440
     elif kind=='side':pos=(650,0,24);target=(0,0,-7);camd.type='ORTHO';camd.ortho_scale=466
     elif kind=='rear':pos=(325,490,180);target=(0,25,-3);camd.type='ORTHO';camd.ortho_scale=450
     else:pos=(139,-234,54);target=(34,-150,0);camd.type='ORTHO';camd.ortho_scale=130
@@ -701,7 +714,7 @@
 'Materials: Paint, Titanium, HeatScorched, Recess, Lamps, Engines; Paint neutral texture × linear faction colour, default [0.10, 0.11, 0.10].',
 'Cycles GPU baked tiling sets: 1024² base-colour and Paint normal; shared 512² metal normals; 512² ORM; 8 m world-scale UV repeats; no unique hull atlas.',
 'Poly Haven CC0 IDs: metal_plate, metal_plate_02, rusty_metal_02; https://polyhaven.com/license ; https://polyhaven.com/a/metal_plate ; https://polyhaven.com/a/metal_plate_02 ; https://polyhaven.com/a/rusty_metal_02 .',
-'Reference differences: six larger harvesting arms as requested, bespoke overlapping armour layout and three recessed rear nozzles; no windows, lettering or logos.'
+'Reference differences: six harvesting arms as requested, cleaner broad armour plates, bespoke vent fairings and three recessed rear nozzles; no windows, lettering or logos.'
 ])+'\n')
 # Clay first: verifies actual built silhouettes before the material presentation.
 camera();clay=bpy.data.materials.new('QA clay');clay.diffuse_color=(.36,.36,.36,1);clay.use_nodes=True;clay.node_tree.nodes['Principled BSDF'].inputs['Roughness'].default_value=.72;clay.node_tree.nodes['Principled BSDF'].inputs['Base Color'].default_value=(.36,.36,.36,1)

codex
Delivered from a clean Blender build: **180,472 triangles, 6 materials, 11.82 MB**. glTF validation reports **zero errors or warnings**; all six arm pivots and paint variants checked.

- [GLB asset](/home/claude-agent/forge-build/forge-assets/jobs/alien-harvester-v1/alien-harvester.glb)
- Renders: [Final](/home/claude-agent/forge-build/forge-assets/jobs/alien-harvester-v1/final.png) · [Side](/home/claude-agent/forge-build/forge-assets/jobs/alien-harvester-v1/side.png) · [Clay](/home/claude-agent/forge-build/forge-assets/jobs/alien-harvester-v1/clay.png) · [Six paints](/home/claude-agent/forge-build/forge-assets/jobs/alien-harvester-v1/paints.png)
- [Build script](/home/claude-agent/forge-build/forge-assets/jobs/alien-harvester-v1/build_alien-harvester.py) · [Node metadata](/home/claude-agent/forge-build/forge-assets/jobs/alien-harvester-v1/nodes.json) · [Notes and texture licences](/home/claude-agent/forge-build/forge-assets/jobs/alien-harvester-v1/NOTES.md)

Local disk space remaining: **6.8 GB**.
diff --git a/jobs/alien-harvester-v1/build_alien-harvester.py b/jobs/alien-harvester-v1/build_alien-harvester.py
index 2fd1298f86ec659e97961d76bdbc9f692a926df6..57f69696c1bb60d37c2615501f86a75a47bda397
--- a/jobs/alien-harvester-v1/build_alien-harvester.py
+++ b/jobs/alien-harvester-v1/build_alien-harvester.py
@@ -161,7 +161,7 @@
 # Identical metal stock normal bakes share one image in the delivered GLB.
 MATS[3].node_tree.nodes['Normal'].image=MATS[1].node_tree.nodes['Normal'].image
 
-for name,col,strength in [('Lamps',(1,.15,.008,1),2.3),('Engines',(1,.22,.018,1),2.2)]:
+for name,col,strength in [('Lamps',(1,.18,.004,1),1.8),('Engines',(1,.24,.009,1),1.8)]:
     m=bpy.data.materials.new(name);m.use_nodes=True;p=m.node_tree.nodes.get('Principled BSDF');p.inputs['Base Color'].default_value=col;p.inputs['Roughness'].default_value=.34;p.inputs['Metallic'].default_value=.3;p.inputs['Emission Color'].default_value=col;p.inputs['Emission Strength'].default_value=strength;MATS.append(m)
 
 class Geo:
@@ -271,7 +271,11 @@
     for i in range(len(profile)-1):
         a,b=profile[i:i+2]
         if a[0]<=y<=b[0]:
-            t=(y-a[0])/(b[0]-a[0]);t=t*t*(3-2*t);return tuple(a[k]*(1-t)+b[k]*t for k in range(1,4))
+            # C1-continuous loft: no flattened shoulder or pinched ring at each
+            # control station, and the overlaid armour uses the identical skin.
+            prev=profile[max(0,i-1)];nxt=profile[min(len(profile)-1,i+2)]
+            span=b[0]-a[0];t=(y-a[0])/span
+            return tuple((2*t**3-3*t*t+1)*a[k]+(t**3-2*t*t+t)*span*(b[k]-prev[k])/(b[0]-prev[0])+(-2*t**3+3*t*t)*b[k]+(t**3-t*t)*span*(nxt[k]-a[k])/(nxt[0]-a[0]) for k in range(1,4))
     return profile[0][1:] if y<profile[0][0] else profile[-1][1:]
 def surface(y,t,offset=0):
     w,z,c=shape(y);return Vector(((w*1.05+offset)*math.sin(t),y,c+(z*1.30+offset)*math.cos(t)))
@@ -350,8 +354,10 @@
     if cy>0:raw=[(-L*.53,-H*.29),(-L*.36,H*.45),(L*.41,H*.42),(L*.52,H*.23),(L*.45,-H*.31),(L*.21,-H*.46),(-L*.35,-H*.43)]
     p2=catmull([(y,0,z) for y,z in raw+[raw[0],raw[1]]],4)[:-4]
     p2=p2[:-1] if (p2[0]-p2[-1]).length<.01 else p2
-    cx=shape(cy)[0]*1.05-.5
-    ringspec=[(.96,0), (1.08,2.3),(1.04,5.4),(.87,6.5),(.79,4.8),(.79,1.8)]
+    # Seat the back into the shell, but keep the entire opening in front of all
+    # overlapping armour, including the broad shoulder at the forward end.
+    cx=max(shape(cy-L*.58+i*L*1.16/32)[0] for i in range(33))*1.05+3.3
+    ringspec=[(.96,-8.0), (1.08,1.2),(1.04,5.4),(.87,6.5),(.79,4.8),(.79,1.8)]
     vs=[];n=len(p2)
     for scale,depth in ringspec:
         for p in p2:vs.append((sign*(cx+depth),cy+p.x*scale,cz+p.z*scale))
@@ -412,8 +418,8 @@
     for j in range(6):
         u=j/5;r=26.1-7*u;a=t+.085*u;pts.append((r*math.cos(a),-201+11*u,r*.89*math.sin(a)))
     tube(h,pts,[.90,1.05,.98,.81,.54,.23],2,9)
-    lit=[Vector(p)+Vector((-.16*math.cos(t),-.72,-.16*math.sin(t))) for p in pts]
-    tube(h,lit,[.29,.46,.44,.38,.24,.08],4,7)
+    lit=[Vector(p)+Vector((-.16*math.cos(t),-.98,-.16*math.sin(t))) for p in pts]
+    tube(h,lit,[.46,.65,.61,.47,.27,.08],4,8)
     # Dark rib continuing down the gullet from each luminous tooth.
     pts2=[]
     for j in range(6):
@@ -454,21 +460,23 @@
         theta=row*.43;base=surface(yy+row*3,theta,2.0);ht=(23 if row==0 else 18)*math.sin((i+1)/9*math.pi)**.5*(1+.10*math.sin(i*2.7))
         pts=catmull([base,base+Vector((row*2,3,ht*.4)),base+Vector((row*5,11,ht*.78)),base+Vector((row*7,21,ht))],5)
         rr=[3.6*(1-j/(len(pts)-1))**1.05+.035 for j in range(len(pts))]
-        tube(h,pts,rr,2,10,.66);ellipsoid(h,base,(5.3,7.8,2.8),0,18,8)
+        tube(h,pts,rr,2,12,ellipse=.66);ellipsoid(h,base,(5.3,7.8,2.8),0,18,8)
         ring(h,base+Vector((0,0,1.8)),(0,0,1),4.1,.6,2,24,7,1.25)
         tube(h,[base+Vector((row*2,0,1)),base+Vector((row*3,4,ht*.36)),base+Vector((row*5,11,ht*.7))],[.35,.28,.05],1,6)
 
 # Tail split vanes around the engine cluster: swept, no familiar human ship tail.
 for s in [-1,1]:
     for zz in [-14,15]:
-        pts=catmull([(s*28,132,zz),(s*31,163,zz*1.1),(s*26,189,zz*1.08),(s*21,211,zz*.9)],6)
-        rr=[6*(1-i/(len(pts)-1))**.8+.07 for i in range(len(pts))];tube(h,pts,rr,0,14,.58)
+        pts=catmull([(s*28,132,zz),(s*31,163,zz*1.1),(s*26,198,zz*1.08),(s*21,226,zz*.9)],6)
+        rr=[6*(1-i/(len(pts)-1))**.8+.07 for i in range(len(pts))];tube(h,pts,rr,0,14,ellipse=.58)
         tube(h,[p+Vector((0,0,2.2 if zz>0 else -2.2)) for p in pts[:-3]],[.30]*len(pts[:-3]),1,6)
 
 # Three main engines, bevelled ring exits, recessed glowing interiors.
 THRUSTERS=[]
-for i,(x,z,r,end) in enumerate([(-24,-7,12,196),(24,-7,12,196),(0,15,9,201)]):
-    tube(h,[(x,133,z),(x,147,z),(x,169,z),(x,end-4,z)],[r*.83,r*1.21,r*1.1,r],0,48)
+for i,(x,z,r,end) in enumerate([(-24,-7,12,214),(24,-7,12,214),(0,15,9,218)]):
+    # Nozzles extend clear of the tail skin, with an open casing and a closed
+    # emissive bowl. No hidden cap may cut across the glowing exit aperture.
+    tube(h,[(x,133,z),(x,147,z),(x,169,z),(x,end-4,z)],[r*.83,r*1.21,r*1.1,r],0,48,cap=False)
     ring(h,(x,151,z),(0,1,0),r*1.16,.9,2,48,8)
     # Exposed hot chamber between overlapping casing collars, visible from the side.
     for yy in [165,167.3,169.6,171.9]:ring(h,(x,yy,z),(0,1,0),r*1.115,.82,5,48,6)
@@ -497,7 +505,7 @@
 arms=[]
 for side in [-1,1]:
     for j,y in enumerate([-54,5,64]):
-        idx=len(arms)+1;root=Vector((side*(44-j*1.5),y+(24 if side<0 else 0),-29+j*.4));g=Geo('Arm_'+str(idx),root)
+        idx=len(arms)+1;root=Vector((side*(44-j*1.5),y+(34 if side<0 else 0),-29+j*.4));g=Geo('Arm_'+str(idx),root)
         ellipsoid(h,root+Vector((0,0,2)),(10.2,10.8,5.7),0,24,10)
         axis=Vector((side*.45,0,-.89)).normalized()
         ring(h,root+axis*1.0,axis,8.3,1.55,0,40,8)
@@ -507,6 +515,10 @@
         if side<0:dy=[v+5*math.sin(k*1.4+j) for k,v in enumerate(dy)]
         curl=[(6,dy[0],-12),(18-j,dy[1],-26),(30-j*4,dy[2],-39-j*2),(26-j*4,dy[3],-50-j*2),(16+j,dy[4],-54-j+(3 if side<0 else 0))]
         if j==2:curl=[(5,dy[0],-12),(13,dy[1],-23),(28,dy[2],-34),(28,dy[3],-48),(14,dy[4],-59)]
+        if side<0:
+            # A second, lower fan gives six distinct hanging silhouettes, with
+            # different tip heights rather than three mirrored hidden limbs.
+            curl=[(x*1.13,dy,dz*(1.24+.055*j)) for x,dy,dz in curl]
         points=[root]+[root+Vector((side*x,dy,dz)) for x,dy,dz in curl]
         pts=catmull(points,7);N=len(pts)
         rr=[6.5*(1-i/(N-1))+.95 for i in range(N)]
@@ -515,7 +527,7 @@
         for k in range(0,N-2,2):
             a,b=pts[k],pts[min(k+2,N-1)];mid=(a+b)/2;direction=(b-a).normalized();length=(b-a).length
             r=rr[k]+.4
-            tube(g,[a,a+direction*.5,b-direction*.55,b],[r*.91,r*1.08,r*1.02,r*.85],0,14,.88)
+            tube(g,[a,a+direction*.5,b-direction*.55,b],[r*.91,r*1.08,r*1.02,r*.85],0,14,ellipse=.88)
             ring(g,a+direction*.6,direction,r*1.02,.22,1,14,6,.88)
             # One narrow spinal rail down every link; no free-floating greebles.
             lateral=Vector((side,0,0));tube(g,[a+lateral*r*.89,mid+lateral*(r+ .15),b+lateral*r*.79],[.3,.34,.22],2,6)
@@ -544,7 +556,7 @@
             for bb in [-1.15,1.15]:
                 q=p+a*aa+b*bb+n*.35;tube(h,[q,q+n*.10],.12,1,7)
         # Small slit receiver: the ship has no windows or cockpit.
-        q=p+n*.4+b*(-.7);rounded_box(h,q,(.7,.14,.12),4,.045,B)
+        q=p+n*.4+b*(-.7);rounded_box(h,q,(.7,.14,.12),2,.045,B)
     for yy in [-150,-102,-63,-20,20,60,97,132]:
         theta=side*2.04;p=surface(yy,theta,1.5)
         n=Vector((math.sin(theta),0,math.cos(theta)));a=Vector((0,1,0));b=n.cross(a);B=Matrix(((a.x,b.x,n.x),(a.y,b.y,n.y),(a.z,b.z,n.z)))
@@ -585,7 +597,7 @@
 for ob in objs:
     select(ob);mod=ob.modifiers.new('Triangulated runtime surface','TRIANGULATE');bpy.ops.object.modifier_apply(modifier=mod.name)
     if ob==hull:
-        dec=ob.modifiers.new('Runtime surface reduction','DECIMATE');dec.ratio=min(.90,(182000-sum(len(a.data.polygons)*2 for a in objs[1:]))/len(ob.data.polygons));dec.use_collapse_triangulate=True;bpy.ops.object.modifier_apply(modifier=dec.name)
+        dec=ob.modifiers.new('Runtime surface reduction','DECIMATE');dec.ratio=min(.90,(178000-sum(len(a.data.polygons)*2 for a in objs[1:]))/len(ob.data.polygons));dec.use_collapse_triangulate=True;bpy.ops.object.modifier_apply(modifier=dec.name)
     if ob==hull:
         weighted=ob.modifiers.new('Area weighted armour shading','WEIGHTED_NORMAL');weighted.keep_sharp=True;weighted.mode='FACE_AREA_WITH_ANGLE';weighted.weight=35
         bpy.ops.object.modifier_apply(modifier=weighted.name)
@@ -601,7 +613,7 @@
     o=bpy.data.objects.new(name,None);sc.collection.objects.link(o);o.location=worldp(p);o.parent=parent;o.empty_display_size=2;return o
 for i,p in enumerate(THRUSTERS):empty('Thruster_'+str(i+1),p)
 empty('Camera_Chase',(0,315,110))
-empty('Light_Nav_L',(63,5,1))['color']=[1.0,0.0,0.0];empty('Light_Nav_R',(-63,5,1))['color']=[0.0,1.0,0.0];empty('Light_Beacon',(0,34,50))['color']=[1.0,.12,.0]
+empty('Light_Nav_L',(63,5,1))['color']=[1.0,0.0,0.0];empty('Light_Nav_R',(-63,5,1))['color']=[0.0,1.0,0.0];empty('Light_Beacon',surface(34,0,5))['color']=[1.0,.12,.0]
 asset=[o for o in sc.objects]
 bpy.context.view_layer.update()
 tri=sum(len(o.data.polygons) for o in objs)
@@ -619,10 +631,11 @@
 area('Cool fill',(-190,-50,70),480000,230,(.51,.68,1))
 area('Aft rim',(100,220,200),1250000,170,(.68,.8,1))
 area('Under bounce',(40,-80,-200),290000,220,(.64,.72,.9))
+area('Arm reflection',(220,-160,-120),650000,220,(.73,.82,1),target=(0,20,-40))
 camd=bpy.data.cameras.new('Render camera');cam=bpy.data.objects.new('Render camera',camd);sc.collection.objects.link(cam);sc.camera=cam;camd.clip_end=3000
 
 def camera(kind='hero'):
-    if kind=='hero':pos=(620,-460,180);target=(0,-6,-3);camd.type='ORTHO';camd.ortho_scale=470
+    if kind=='hero':pos=(510,-665,195);target=(0,-6,-3);camd.type='ORTHO';camd.ortho_scale=440
     elif kind=='side':pos=(650,0,24);target=(0,0,-7);camd.type='ORTHO';camd.ortho_scale=466
     elif kind=='rear':pos=(325,490,180);target=(0,25,-3);camd.type='ORTHO';camd.ortho_scale=450
     else:pos=(139,-234,54);target=(34,-150,0);camd.type='ORTHO';camd.ortho_scale=130
@@ -701,7 +714,7 @@
 'Materials: Paint, Titanium, HeatScorched, Recess, Lamps, Engines; Paint neutral texture × linear faction colour, default [0.10, 0.11, 0.10].',
 'Cycles GPU baked tiling sets: 1024² base-colour and Paint normal; shared 512² metal normals; 512² ORM; 8 m world-scale UV repeats; no unique hull atlas.',
 'Poly Haven CC0 IDs: metal_plate, metal_plate_02, rusty_metal_02; https://polyhaven.com/license ; https://polyhaven.com/a/metal_plate ; https://polyhaven.com/a/metal_plate_02 ; https://polyhaven.com/a/rusty_metal_02 .',
-'Reference differences: six larger harvesting arms as requested, bespoke overlapping armour layout and three recessed rear nozzles; no windows, lettering or logos.'
+'Reference differences: six harvesting arms as requested, cleaner broad armour plates, bespoke vent fairings and three recessed rear nozzles; no windows, lettering or logos.'
 ])+'\n')
 # Clay first: verifies actual built silhouettes before the material presentation.
 camera();clay=bpy.data.materials.new('QA clay');clay.diffuse_color=(.36,.36,.36,1);clay.use_nodes=True;clay.node_tree.nodes['Principled BSDF'].inputs['Roughness'].default_value=.72;clay.node_tree.nodes['Principled BSDF'].inputs['Base Color'].default_value=(.36,.36,.36,1)

tokens used
388,604
Delivered from a clean Blender build: **180,472 triangles, 6 materials, 11.82 MB**. glTF validation reports **zero errors or warnings**; all six arm pivots and paint variants checked.

- [GLB asset](/home/claude-agent/forge-build/forge-assets/jobs/alien-harvester-v1/alien-harvester.glb)
- Renders: [Final](/home/claude-agent/forge-build/forge-assets/jobs/alien-harvester-v1/final.png) · [Side](/home/claude-agent/forge-build/forge-assets/jobs/alien-harvester-v1/side.png) · [Clay](/home/claude-agent/forge-build/forge-assets/jobs/alien-harvester-v1/clay.png) · [Six paints](/home/claude-agent/forge-build/forge-assets/jobs/alien-harvester-v1/paints.png)
- [Build script](/home/claude-agent/forge-build/forge-assets/jobs/alien-harvester-v1/build_alien-harvester.py) · [Node metadata](/home/claude-agent/forge-build/forge-assets/jobs/alien-harvester-v1/nodes.json) · [Notes and texture licences](/home/claude-agent/forge-build/forge-assets/jobs/alien-harvester-v1/NOTES.md)

Local disk space remaining: **6.8 GB**.