Reading prompt from stdin...
OpenAI Codex v0.161.0
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workdir: /home/claude-agent/forge-build/forge-assets/jobs/k2-tank-v1
model: gpt-6-astra
provider: openai
approval: never
sandbox: danger-full-access
reasoning effort: medium
reasoning summaries: none
session id: 01a12bc9-b7b0-7c60-a574-955a1325bd70
--------
user
Build modern South Korean K2 Black Panther style main battle tank: compact angular hull, sharply faceted wedge turret with modular armour, long 120 mm L/55 gun with a muzzle reference sensor, six road wheels per side, side skirts with a sawtooth lower edge, turret-roof panoramic sights and a radar panel on each turret cheek, rear turret bustle for the autoloader (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/k2-tank-v1/<script>.py
(first `ssh gex44 mkdir -p /root/fal-author/k2-tank-v1`, scp scripts and any textures to gex44:/root/fal-author/k2-tank-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: 10.80 m long with the gun forward (hull 7.50 m), 3.60 m wide, 2.40 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 140k triangles, at most 10 materials, texture images at most 2048 px, GLB at most 12 MB.

Export contract (glTF binary .glb, Y up, metres): Gun forward toward +Z, up = +Y, +X = the tank's LEFT side, centred on X = 0; origin (0,0,0) on the ground plane at the centre of the hull footprint. Tracks touch y = 0. Turret straight ahead, gun level. 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. RIG. Separate named mesh nodes: Hull (everything fixed to the hull), Turret (origin ON the turret ring's vertical axis, turns about Y), Gun (child of Turret: the mantlet, origin on the trunnion axis, elevates about X), Barrel (child of Gun: the tube forward of the mantlet, origin on the bore axis where it leaves the mantlet: a game slides it back along the bore for recoil), empty Muzzle (barrel tip, child of Barrel), MG (roof machine gun, child of Turret, origin at its pivot) where the type has one, Track_L, Track_R (the track belts: their texture V coordinate runs ALONG the track, once round the loop, so a game scrolls or deforms it to animate; links modelled as geometry), every road wheel, sprocket, idler and return roller as its own node Wheel_L1..Wheel_Ln and Wheel_R1..Wheel_Rn (front to back, origin at its hub, spin about X). Crew hatches as their own nodes, origin on the hinge line, closed: Hatch_Commander, Hatch_Driver and Hatch_Loader where the type has them, with a dark crew space modelled just under each so an open hatch shows depth, not a hole to nowhere. Empty nodes (no mesh): Seat_Commander (head-out hatch point), Seat_Driver, Exhaust, Light_Head_L, Light_Head_R, Fx_Engine (centre of the engine deck: where a game puts fire and smoke), Fx_Ammo (inside the hull where the ammunition burns), Fx_Hatch (top of the commander hatch: flame jet). Lamps: material "Lamps". PAINT CONTRACT (how games get variants of one model): the main paint lives in ONE material named exactly "Paint". Its base colour TEXTURE holds only light neutral detail (near white, with grey grime, mud, dust, soot, rain streaks, panel lines, chipped edges baked in) and its baseColorFactor holds the paint colour; default factor = [0.10, 0.13, 0.08] (forest green). A game changes that factor, so nothing else (rubber, metal, tracks, glass, lamps, weapons, interior) may use Paint. Matte military paint: no clearcoat. In nodes.json add "paints": six real paints for this model as linear RGB triples with names, the default first, chosen from: olive drab, NATO green, desert tan, field grey, winter white, dark green-black, sand, forest green, dark yellow, panzer grey, khaki brown; 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. DESTRUCTIBLE TANK (library contract tank-damage/v1). Games show this tank healthy, hit, stripped of its panels, immobilised, gun knocked out, and as a burnt wreck, only by showing and hiding named nodes. So deliver TWO GLBs in the same frame, origin and scale. FILE A, k2-tank.glb = the healthy tank with the rig above. In it every bolt-on item is its OWN mesh node named Part_<Name>, never merged into Hull or Turret, with its origin at its own centre (a game hides it, or throws it as debris): side skirt / armour plates one node per plate (Part_Skirt_L1.. front to back, Part_Skirt_R1..), fenders and mudguards (Part_Fender_FL, _FR, _RL, _RR), stowage boxes, tool sets, fuel drums or jerrycans, exhaust mufflers and shrouds, engine deck grilles, lamp guards, spare track links, tow cable, unditching beam, antennas, smoke launchers; turret items are children of Turret (Part_Turret_<Name>: bins, bustle rack, cupola ring, sights, extra plates). Use what this type really carries: at least 14 Part_ nodes, spread over all four sides and the turret, big enough that removing them clearly changes the silhouette. UNDER every Part the Hull / Turret surface is complete and detailed (mounting brackets, bolt bosses, weld seams, unfaded paint patch; behind skirts the return rollers and upper track run): hiding a Part must never show a hole, a missing face or empty space. FILE B, k2-tank-damage.glb = ONLY the damage pieces (a game keeps them hidden until needed). Exactly four top-level nodes: (1) Hull_Damage, an empty at the origin, with children: Dmg_<Name> for at least 8 of the hull Parts (the SAME part in place but battle-damaged: bent, torn open, shot through with curled edges, half hanging, scorched; same origin as its Part, so a game swaps Part_X for Dmg_X); Scar_Hull_Front, Scar_Hull_L, Scar_Hull_R, Scar_Hull_Rear (hit marks for that armour face: 3 to 5 impacts each, real geometry hugging the armour 2 to 4 mm proud, no z-fighting: gouges of bright bare steel, ricochet furrows, one penetration hole with a petalled raised rim and a black inside, a soot fan around them); Track_L_Broken and Track_R_Broken (that track thrown: snapped at the front, the upper run fallen off the wheels, the loose end lying flat on the ground at y = 0 ahead of or behind the tank; a game shows it instead of Track_L / Track_R). (2) Turret_Damage, an empty exactly at the Turret origin, with children: Dmg_Turret_<Name> twins (at least 3), Scar_Turret_Front, Scar_Turret_L, Scar_Turret_R, Scar_Turret_Rear, and Gun_Broken (origin exactly at the Gun origin: the mantlet with the barrel burst and peeled open at mid length, or bent down; shown instead of Gun). (3) Wreck_Hull, at the origin: the whole hull knocked out and burnt out as ONE mesh, wheels and tracks included: paint burnt off to grey scale, rust and soot (material "Burnt", never Paint), engine deck ruptured upward, hatches blown open, several plates missing or hanging, rubber burnt off the road wheels, suspension sagged about 5 cm, tracks slack and one broken; the open turret ring well is modelled, with a dark burnt interior. (4) Wreck_Turret, origin exactly at the Turret origin (a game leaves it in place, sets it askew, or blows it off beside the hull): the burnt turret with its gun drooped to full depression and hatches open; its underside is closed, with the turret ring and basket stub modelled, because it may lie upside down. Build the damage from copies of your healthy meshes (deform, cut, boolean, decimate) so everything lines up. Budget of file B: at most 110k triangles (the wreck about 40 percent of the healthy count); materials Paint (same texture and factor as file A: the recolour must follow), Burnt, Scars (bare steel and soot), TrackSteel, Rubber; its textures at most 512 px except Paint. PROOF: render states.png, a 3x2 grid of the same 3/4 front view, built by importing BOTH exported GLBs into an empty scene: 1 healthy; 2 hit (every Scar_ node shown, six Parts swapped for their Dmg_ twins); 3 stripped (every Part_ hidden, no twins: the bare tank must still look finished); 4 immobilised (Track_L_Broken instead of Track_L, Gun_Broken instead of Gun); 5 wreck (only Wreck_Hull + Wreck_Turret); 6 wreck with Wreck_Turret blown off, lying beside the hull. LOOK at it with your image tool and fix what reads badly. In nodes.json add "damage": {"parts": [{"part", "twin" or null}], "scars": [...], "broken": {...}, "wreck": [...]} and list the nodes of both files. No national insignia, crosses, stars, roundels, flags, unit badges, serial numbers or any text: games give these to their own factions. No manufacturer logos. MOVING PARTS: never apply transforms to a moving node: each turret, gun, barrel, wheel and hatch keeps its object origin ON its own pivot (turret ring axis, gun trunnion, bore axis, wheel centre, hinge line). Check it in Blender before export: rotate each moving node 30 degrees in a test render; nothing may leave its place. 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 healthy GLB within about 30 minutes, the damage file by about 60 minutes, then use what is left of about 75 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: k2-tank.glb; build_k2-tank.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 the Forge asset rules, then build and render the healthy tank first, followed by the damage variants and export proofs.

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/k2-tank-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.
- **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. Gemini 3.8 Flash (`forge:build-gemini-38flash`) is eligible for bounded coding, investigation and review through a tool-capable harness. Local builders use `forge-agent run --harness gemini --model forge:build-gemini-38flash --repo <repo> --purpose <task> --task <brief>` with a bounded `--timeout`; this runs Claude Code with copied shared skills/rules/hooks, Forge MCP and isolated proxy auth. 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 3.8 Flash (LiteLLM proxy alias `forge:build-gemini-38flash`) | `geminix` | `--model <proxy alias>` |
| (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 MCP, 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)

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 'cat /home/claude-agent/.agents/skills/blender-game-assets/SKILL.md' in /home/claude-agent/forge-build/forge-assets/jobs/k2-tank-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.

## 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
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exec
/bin/bash -lc "pwd; rg --files -g AGENTS.md -g '*.py' -g '*.jpg' -g '*.glb' . /home/claude-agent/forge-build/forge-assets 2>/dev/null | head -60; cat /home/claude-agent/.agents/skills/blender-game-assets/reference/preflight-and-recovery.md" in /home/claude-agent/forge-build/forge-assets/jobs/k2-tank-v1
 succeeded in 0ms:
/home/claude-agent/forge-build/forge-assets/jobs/k2-tank-v1
./sheet.jpg
/home/claude-agent/forge-build/forge-assets/W-LIFE6-EVIDENCE/interaction-probe.py
/home/claude-agent/forge-build/forge-assets/W-LIFE6-EVIDENCE/probe.py
/home/claude-agent/forge-build/forge-assets/feedback/server.py
/home/claude-agent/forge-build/forge-assets/feedback/store.py
/home/claude-agent/forge-build/forge-assets/feedback/cli.py
/home/claude-agent/forge-build/forge-assets/omg/kit/building/test/town-grass-gpu.py
/home/claude-agent/forge-build/forge-assets/omg/factory/test_ohmygames_library.py
/home/claude-agent/forge-build/forge-assets/omg/factory/games_city.py
/home/claude-agent/forge-build/forge-assets/omg/factory/test_games_town.py
/home/claude-agent/forge-build/forge-assets/omg/factory/test_games_city.py
/home/claude-agent/forge-build/forge-assets/omg/factory/games_library.py
/home/claude-agent/forge-build/forge-assets/omg/factory/games_town.py
/home/claude-agent/forge-build/forge-assets/omg/factory/ref/games_garage.py
/home/claude-agent/forge-build/forge-assets/site/shots/game-lighthouse.jpg
/home/claude-agent/forge-build/forge-assets/site/shots/st8-roof-dots-before.jpg
/home/claude-agent/forge-build/forge-assets/site/shots/st5-aged-roof.jpg
/home/claude-agent/forge-build/forge-assets/site/shots/st6-heroes-close.jpg
/home/claude-agent/forge-build/forge-assets/site/shots/st-town-river.jpg
/home/claude-agent/forge-build/forge-assets/site/shots/st6-before-town-top.jpg
/home/claude-agent/forge-build/forge-assets/site/shots/st3-square-props.jpg
/home/claude-agent/forge-build/forge-assets/site/shots/st8-roof-dots-after.jpg
/home/claude-agent/forge-build/forge-assets/site/shots/st6-roof-close.jpg
/home/claude-agent/forge-build/forge-assets/site/shots/game-quay.jpg
/home/claude-agent/forge-build/forge-assets/site/shots/st7-roofs.jpg
/home/claude-agent/forge-build/forge-assets/site/shots/bm-medieval-tavern.jpg
/home/claude-agent/forge-build/forge-assets/site/shots/st6-town-street.jpg
/home/claude-agent/forge-build/forge-assets/site/shots/kit-street.jpg
/home/claude-agent/forge-build/forge-assets/site/shots/st8-town-street.jpg
/home/claude-agent/forge-build/forge-assets/site/shots/st6-fronts.jpg
/home/claude-agent/forge-build/forge-assets/site/shots/bm-breton-eaves.jpg
/home/claude-agent/forge-build/forge-assets/site/shots/st4-city-aerial.jpg
/home/claude-agent/forge-build/forge-assets/site/shots/st4-cottage.jpg
/home/claude-agent/forge-build/forge-assets/site/shots/st7-square.jpg
/home/claude-agent/forge-build/forge-assets/site/shots/st7-props.jpg
/home/claude-agent/forge-build/forge-assets/site/shots/st4-patrician.jpg
/home/claude-agent/forge-build/forge-assets/site/shots/st8-trees-before.jpg
/home/claude-agent/forge-build/forge-assets/site/shots/st7-roof-close.jpg
/home/claude-agent/forge-build/forge-assets/site/shots/st6-city-street.jpg
/home/claude-agent/forge-build/forge-assets/site/shots/st5-wall-door-fixed.jpg
/home/claude-agent/forge-build/forge-assets/site/shots/kit-compare.jpg
/home/claude-agent/forge-build/forge-assets/site/shots/st8-trees-after.jpg
/home/claude-agent/forge-build/forge-assets/site/shots/game-kit-house.jpg
/home/claude-agent/forge-build/forge-assets/site/shots/st7-before-roofs.jpg
/home/claude-agent/forge-build/forge-assets/site/shots/st7-before-church-close.jpg
/home/claude-agent/forge-build/forge-assets/site/shots/st8-town-low.jpg
/home/claude-agent/forge-build/forge-assets/site/shots/bm-breton-village.jpg
/home/claude-agent/forge-build/forge-assets/site/shots/st-cathedral.jpg
/home/claude-agent/forge-build/forge-assets/site/shots/st5-tavern.jpg
/home/claude-agent/forge-build/forge-assets/site/shots/st3-city-plain.jpg
/home/claude-agent/forge-build/forge-assets/site/shots/st8-village-street.jpg
/home/claude-agent/forge-build/forge-assets/site/shots/st5-hill-road.jpg
/home/claude-agent/forge-build/forge-assets/site/shots/bm-medieval-village.jpg
/home/claude-agent/forge-build/forge-assets/site/shots/st7-before-town-street.jpg
/home/claude-agent/forge-build/forge-assets/site/shots/st6-square.jpg
/home/claude-agent/forge-build/forge-assets/site/shots/st5-window-reveal.jpg
/home/claude-agent/forge-build/forge-assets/site/shots/st3-wall-slope.jpg
/home/claude-agent/forge-build/forge-assets/site/shots/st3-oven-footing.jpg
/home/claude-agent/forge-build/forge-assets/site/shots/st-village-hill.jpg
/home/claude-agent/forge-build/forge-assets/site/shots/st7-bridge.jpg
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# 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.

codex
I’m using the blender-game-assets skill. The reference’s key shapes are the low wedge turret, long slim barrel, six large road wheels, and deep sawtooth skirts; I’ll build those proportions before adding fittings and surface wear.

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exec
/bin/bash -lc "coord claim local:/home/claude-agent/forge-build/forge-assets/jobs/k2-tank-v1/ --note 'K2 tank asset build'; coord check gex44:/root/fal-author/k2-tank-v1/; coord claim gex44:/root/fal-author/k2-tank-v1/ --note 'K2 Blender build'; date -u '+%FT%TZ'; 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; do if test -f \""'$p"; then cat "$p"; fi; done; ssh gex44 '"'mkdir -p /root/fal-author/k2-tank-v1; nvidia-smi --query-gpu=name,memory.free --format=csv,noheader'" in /home/claude-agent/forge-build/forge-assets/jobs/k2-tank-v1
 succeeded in 663ms:
claim local:/home/claude-agent/forge-build/forge-assets/jobs/k2-tank-v1/ [exclusive] ttl=1800s
clear    gex44:/root/fal-author/k2-tank-v1/
claim gex44:/root/fal-author/k2-tank-v1/ [exclusive] ttl=1800s
2026-10-11T16:27:09Z
NVIDIA RTX 4000 SFF Ada Generation, 9537 MiB

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exec
/bin/bash -lc "python3 - <<'PY'
import urllib.request,json
x=json.load(urllib.request.urlopen('https://api.polyhaven.com/assets?t=textures'))
print('\\n'.join(k for k in x if any(s in k for s in ['metal','steel','paint','rust','rubber'])))
PY" in /home/claude-agent/forge-build/forge-assets/jobs/k2-tank-v1
 exited 1 in 132ms:
Traceback (most recent call last):
  File "<stdin>", line 2, 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

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exec
/bin/bash -lc "ssh gex44 '/root/blender-spike/blender-5.2.0-linux-x64/blender -b --python-exit-code 1 --python-expr \"import bpy; bpy.ops.mesh.primitive_cube_add(); p=bpy.context.preferences.addons[\\\"cycles\\\"].preferences; p.compute_device_type=\\\"OPTIX\\\"; p.get_devices(); print([(d.name,d.type) for d in p.devices]); print(\\\"PREFLIGHT_OK\\\")\"'" in /home/claude-agent/forge-build/forge-assets/jobs/k2-tank-v1
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exec
/bin/bash -lc "curl -L -A 'Mozilla/5.0' -s 'https://api.polyhaven.com/assets?t=textures' -o /tmp/k2-polyhaven.json; python3 - <<'PY'
import json
x=json.load(open('/tmp/k2-polyhaven.json')); print('\\n'.join(k for k in x if any(s in k for s in ['metal','steel','paint','rust','rubber'])))
PY" in /home/claude-agent/forge-build/forge-assets/jobs/k2-tank-v1
 succeeded in 5ms:
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
rubber_tiles
rubberized_track
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 dimensions and pivots are laid out. I’m building complete armour surfaces beneath the removable panels, and using shared baked textures so the paint can be recoloured without changing the rubber, optics, or tracks.

 succeeded in 166703ms:
INFO gpu_gate: gpu slot acquired by blender (pid 1356556, 6000 MiB, batch)
00:00.408  cycles           | WARNING HIPEW initialization failed: Error opening HIP dynamic library
[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.
[('NVIDIA RTX 4000 SFF Ada Generation', 'CUDA'), ('13th Gen Intel Core i5-13500', 'CPU'), ('NVIDIA RTX 4000 SFF Ada Generation', 'OPTIX')]
PREFLIGHT_OK
Blender 5.2.0 LTS (hash fbe6228777e7 built 2026-07-14 01:32:04)

Blender quit

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exec
/bin/bash -lc "cat > build_k2-tank.py <<'PY'
\"\"\"K2-style MBT, authored in metres. Blender 5.2, Cycles/OptiX.
Run: blender -b --python-exit-code 1 --python build_k2-tank.py
Optional -- --proof-only reloads exported GLBs for proof rendering.
CC0 source: https://polyhaven.com/a/metal_plate, /a/rubberized_track, /a/rusty_metal
\"\"\"
import bpy, math, os, sys, json, struct, urllib.request, random
from pathlib import Path
from mathutils import Vector, Matrix
import numpy as np
ROOT=Path(__file__).resolve().parent
CACHE=ROOT/'textures'; CACHE.mkdir(exist_ok=True)
random.seed(28)
bpy.ops.object.select_all(action='SELECT'); bpy.ops.object.delete(use_global=False)
sc=bpy.context.scene; sc.render.engine='CYCLES'; sc.cycles.samples=24
prefs=bpy.context.preferences.addons['cycles'].preferences
prefs.compute_device_type='OPTIX'; prefs.get_devices()
for d in prefs.devices:d.use=d.type=='OPTIX'
sc.cycles.device='GPU'; sc.cycles.use_denoising=True
sc.render.image_settings.file_format='PNG'; sc.render.film_transparent=False
sc.world.color=(.24,.24,.24)
sc.view_settings.view_transform='AgX'
M={}; GROUPS={}; healthy=[]; damage=[]
PAINTS=[('forest green',[.10,.13,.08]),('olive drab',[.17,.17,.085]),('NATO green',[.075,.12,.075]),('desert tan',[.48,.36,.21]),('field grey',[.22,.25,.22]),('winter white',[.72,.75,.70])]

def download(asset,typ):
 p=CACHE/f'{asset}_{typ}_1k.jpg'
 if not p.exists():
  url=f'https://dl.polyhaven.org/file/ph-assets/Textures/jpg/1k/{asset}/{asset}_{typ}_1k.jpg'
  req=urllib.request.Request(url,headers={'User-Agent':'Mozilla/5.0'})
  with urllib.request.urlopen(req,timeout=90) as r:p.write_bytes(r.read())
 return str(p)

def material(name,asset,color,rough,metal,res=512):
 \"\"\"Bake a shared physical tile, including photographic and procedural detail.\"\"\"
 mat=bpy.data.materials.new(name); mat.use_nodes=True; nt=mat.node_tree; n=nt.nodes; l=nt.links
 bs=n.get('Principled BSDF'); out=n.get('Material Output')
 tex=n.new('ShaderNodeTexImage');tex.image=bpy.data.images.load(download(asset,'diff'),check_existing=True)
 uv=n.new('ShaderNodeTexCoord');l.new(uv.outputs['UV'],tex.inputs['Vector'])
 bw=n.new('ShaderNodeRGBToBW');l.new(tex.outputs['Color'],bw.inputs[0])
 ramp=n.new('ShaderNodeValToRGB');l.new(bw.outputs[0],ramp.inputs[0])
 if name=='Paint':a,b=(.40,.40,.40,1),(.94,.94,.94,1)
 else:a,b=tuple(c*.42 for c in color)+(1,),tuple(color)+(1,)
 ramp.color_ramp.elements[0].position=.12;ramp.color_ramp.elements[0].color=a
 ramp.color_ramp.elements[1].position=.8;ramp.color_ramp.elements[1].color=b
 noise=n.new('ShaderNodeTexNoise');noise.inputs['Scale'].default_value=48;noise.inputs['Detail'].default_value=3
 l.new(uv.outputs['UV'],noise.inputs['Vector'])
 mix=n.new('ShaderNodeMixRGB');mix.blend_type='MULTIPLY';mix.inputs[0].default_value=.16
 l.new(ramp.outputs[0],mix.inputs[1]);l.new(noise.outputs['Fac'],mix.inputs[2])
 l.new(mix.outputs[0],bs.inputs['Base Color']);bs.inputs['Roughness'].default_value=rough;bs.inputs['Metallic'].default_value=metal
 normal=n.new('ShaderNodeTexImage');normal.image=bpy.data.images.load(download(asset,'nor_gl'),check_existing=True);normal.image.colorspace_settings.name='Non-Color'
 norm=n.new('ShaderNodeNormalMap');norm.inputs['Strength'].default_value=.24 if name=='Paint' else .5;l.new(normal.outputs['Color'],norm.inputs['Color']);l.new(norm.outputs[0],bs.inputs['Normal'])
 arm=n.new('ShaderNodeTexImage');arm.image=bpy.data.images.load(download(asset,'arm'),check_existing=True);arm.image.colorspace_settings.name='Non-Color'
 sep=n.new('ShaderNodeSeparateColor');l.new(arm.outputs[0],sep.inputs[0])
 rr=n.new('ShaderNodeMath');rr.operation='MULTIPLY_ADD';rr.inputs[1].default_value=.24;rr.inputs[2].default_value=rough-.12;l.new(sep.outputs[1],rr.inputs[0]);l.new(rr.outputs[0],bs.inputs['Roughness'])
 bpy.ops.mesh.primitive_plane_add(size=1);plane=bpy.context.object;plane.data.materials.append(mat)
 target=n.new('ShaderNodeTexImage');n.active=target
 images={}
 emit=n.new('ShaderNodeEmission')
 for kind,size in [('base',res),('normal',res),('orm',min(512,res))]:
  im=bpy.data.images.new(name+'_'+kind,width=size,height=size,alpha=False)
  if kind"'!='"'base':im.colorspace_settings.name='Non-Color'
  target.image=im;n.active=target
  if kind=='base':l.new(mix.outputs[0],emit.inputs[0]);l.new(emit.outputs[0],out.inputs[0]);bpy.ops.object.bake(type='EMIT',margin=4)
  elif kind=='normal':l.new(bs.outputs[0],out.inputs[0]);bpy.ops.object.bake(type='NORMAL',margin=4)
  else:
   comb=n.new('ShaderNodeCombineColor');comb.inputs[0].default_value=1;comb.inputs[2].default_value=metal;l.new(rr.outputs[0],comb.inputs[1]);l.new(comb.outputs[0],emit.inputs[0]);l.new(emit.outputs[0],out.inputs[0]);bpy.ops.object.bake(type='EMIT',margin=4)
  im.filepath_raw=str(CACHE/(name+'_'+kind+'.png'));im.file_format='PNG';im.save();images[kind]=im
 bpy.data.objects.remove(plane,do_unlink=True)
 n.clear();bs=n.new('ShaderNodeBsdfPrincipled');out=n.new('ShaderNodeOutputMaterial');l.new(bs.outputs[0],out.inputs[0])
 for kind,im in images.items():
  t=n.new('ShaderNodeTexImage');t.image=im
  if kind=='base':
   if name=='Paint':
    mu=n.new('ShaderNodeMixRGB');mu.blend_type='MULTIPLY';mu.inputs[0].default_value=1;mu.inputs[2].default_value=tuple(PAINTS[0][1])+(1,);mu.name='PaintTint';l.new(t.outputs[0],mu.inputs[1]);l.new(mu.outputs[0],bs.inputs['Base Color'])
   else:l.new(t.outputs[0],bs.inputs['Base Color'])
  elif kind=='normal':nm=n.new('ShaderNodeNormalMap');l.new(t.outputs[0],nm.inputs['Color']);l.new(nm.outputs[0],bs.inputs['Normal'])
  else:
   se=n.new('ShaderNodeSeparateColor');l.new(t.outputs[0],se.inputs[0]);l.new(se.outputs[1],bs.inputs['Roughness']);l.new(se.outputs[2],bs.inputs['Metallic'])
 M[name]=mat;print('BAKED',name,flush=True)
 return mat

class Geo:
 def __init__(self):self.v=[];self.f=[];self.mi=[]
 def add(self,v,f,mat='Paint'):
  off=len(self.v);self.v.extend(v);self.f.extend(tuple(off+i for i in face) for face in f);self.mi.extend([mat]*len(f))
 def box(self,c,s,mat='Paint',rot=None):
  vs=[Vector((x*s[0]/2,y*s[1]/2,z*s[2]/2)) for x,y,z in [(-1,-1,-1),(1,-1,-1),(1,1,-1),(-1,1,-1),(-1,-1,1),(1,-1,1),(1,1,1),(-1,1,1)]]
  if rot:vs=[rot@v for v in vs]
  self.add([Vector(c)+v for v in vs],[(0,3,2,1),(4,5,6,7),(0,1,5,4),(1,2,6,5),(2,3,7,6),(3,0,4,7)],mat)
 def cyl(self,c,r,depth,mat='Paint',axis=(0,0,1),n=24,r2=None):
  a=Vector(axis).normalized();u=a.cross(Vector((0,1,0)))
  if u.length<.1:u=a.cross(Vector((1,0,0)))
  u.normalize();v=a.cross(u);verts=[]
  for h,rad in [(-depth/2,r),(depth/2,r if r2 is None else r2)]:
   verts.extend(Vector(c)+a*h+rad*(u*math.cos(i*2*math.pi/n)+v*math.sin(i*2*math.pi/n)) for i in range(n))
  self.add(verts,[tuple(reversed(range(n))),tuple(range(n,2*n))]+[(i,(i+1)%n,(i+1)%n+n,i+n) for i in range(n)],mat)
 def line(self,points,r,mat='Metal',n=8):
  for a,b in zip(points,points[1:]):a,b=Vector(a),Vector(b);self.cyl((a+b)/2,r,(b-a).length,mat,b-a,n)
 def ring(self,c,ri,ro,depth,mat='Paint',axis=(0,0,1),n=48):
  a=Vector(axis).normalized();u=a.cross(Vector((0,1,0)))
  if u.length<.1:u=a.cross(Vector((1,0,0)))
  u.normalize();v=a.cross(u);vs=[]
  for h,r in [(-depth/2,ro),(depth/2,ro),(depth/2,ri),(-depth/2,ri)]:vs += [Vector(c)+a*h+r*(u*math.cos(i*2*math.pi/n)+v*math.sin(i*2*math.pi/n)) for i in range(n)]
  self.add(vs,[(j*n+i,j*n+(i+1)%n,((j+1)%4)*n+(i+1)%n,((j+1)%4)*n+i) for j in range(4) for i in range(n)],mat)
 def loft(self,rings,mat='Paint'):
  n=len(rings[0]);self.add(sum(rings,[]),[tuple(reversed(range(n))),tuple(range((len(rings)-1)*n,len(rings)*n))]+[(j*n+i,j*n+(i+1)%n,(j+1)*n+(i+1)%n,(j+1)*n+i) for j in range(len(rings)-1) for i in range(n)],mat)
 def object(self,name,pivot=(0,0,0),parent=None,bev=.008,collection=healthy):
  mesh=bpy.data.meshes.new(name);mesh.from_pydata([Vector(v)-Vector(pivot) for v in self.v],[],self.f);mesh.update()
  o=bpy.data.objects.new(name,mesh);sc.collection.objects.link(o);o.location=pivot
  used=list(dict.fromkeys(self.mi))
  for m in used:mesh.materials.append(M[m])
  for poly,m in zip(mesh.polygons,self.mi):poly.material_index=used.index(m)
  bpy.context.view_layer.objects.active=o;o.select_set(True)
  if bev:
   mod=o.modifiers.new('Machined edge chamfers','BEVEL');mod.width=bev;mod.segments=2;mod.affect='EDGES';mod.limit_method='ANGLE'
   bpy.ops.object.modifier_apply(modifier=mod.name)
  # Deterministic metre-scaled box projection, shared trim/tile textures.
  uv=mesh.uv_layers.new(name='UVMap') if not mesh.uv_layers else mesh.uv_layers[0]
  for p in mesh.polygons:
   ax=max(range(3),key=lambda i:abs(p.normal[i]));ids=[i for i in range(3) if i"'!=ax]
   for li in p.loop_indices:
    co=mesh.vertices[mesh.loops[li].vertex_index].co+Vector(pivot);uv.data[li].uv=(co[ids[0]]*.72,co[ids[1]]*.72)
   if len(p.vertices)==4 and p.area<.04:p.use_smooth=False
  # preserve geometry position while expressing a true local pivot
  if parent:o.parent=parent;o.location=Vector(pivot)-parent.matrix_world.translation
  o.select_set(False);collection.append(o);return o

def empty(name,pos,parent=None,col=healthy):
 o=bpy.data.objects.new(name,None);sc.collection.objects.link(o);o.location=pos
 if parent:o.parent=parent;o.location=Vector(pos)-parent.matrix_world.translation
 col.append(o);return o

def bolts(g,points,axis=(0,0,1),mat='"'Metal',r=.018):
 for p in points:g.cyl(p,r,.012,mat,axis,n=6)

def octagon(xw,yfront,yrear,z,ch=.2):
 return [(-xw+ch,yfront,z),(xw-ch,yfront,z),(xw,yfront+ch,z),(xw,yrear-ch,z),(xw-ch,yrear,z),(-xw+ch,yrear,z),(-xw,yrear-ch,z),(-xw,yfront+ch,z)]

def build():
 for args in [('Paint','metal_plate',(1,1,1),.8,.08,1024),('Rubber','rubberized_track',(.045,.05,.045),.88,0,512),('TrackSteel','rusty_metal',(.19,.17,.13),.66,.7,512),('Metal','metal_plate',(.22,.24,.23),.5,.8,512),('Glass','metal_plate',(.014,.032,.05),.18,.55,256),('Lamps','metal_plate',(.82,.73,.51),.3,.1,256),('Interior','metal_plate',(.015,.018,.014),.98,0,256),('Burnt','rusty_metal',(.075,.066,.056),.94,.2,512),('Scars','rusty_metal',(.28,.25,.20),.68,.6,512)]:material(*args)
 # Low protected tub and broad glacis; hull is a complete closed solid.
 g=Geo();g.loft([octagon(1.23,-3.30,3.5,.39,.35),octagon(1.42,-3.75,3.75,1.12,.2),octagon(1.64,-2.86,3.68,1.48,.16)])
 # open crew well under hinged driver's hatch, dark cylinder interior
 g.cyl((.62,-2.28,1.46),.31,.10,'Interior');g.ring((.62,-2.28,1.5),.25,.32,.06)
 # longitudinal sponson rails and suspension mounts, visible stripped
 for s in [-1,1]:
  g.box((s*1.43,0,1.18),(.15,6.85,.26))
  for y in [-2.4,-1.45,-.5,.45,1.4,2.35]:
   g.cyl((s*1.35,y,.61),.16,.22,'Metal',(1,0,0));g.line([(s*1.36,y,.68),(s*1.45,y+.22,.55)],.065,'Metal')
  bolts(g,[(s*1.53,y,1.33) for y in np.arange(-2.9,3.3,.4)])
 # rear exhaust bay inset / ribs
 g.box((0,3.735,1.0),(2.38,.022,.48),'Interior')
 for z in np.arange(.82,1.23,.045):g.box((0,3.76,z),(2.2,.035,.012),'Metal')
 for s in [-1,1]:
  g.ring((s*.94,-3.47,.77),.055,.095,.07,'Metal',(0,1,0),20)
  g.ring((s*.94,3.72,.66),.055,.095,.07,'Metal',(0,1,0),20)
 hull=g.object('Hull',bev=.015)
 # Turret low wedge: stepped plan and strongly sloped cheeks.
 tp=(0,-.3,1.53);g=Geo()
 g.ring(tp,.76,1.0,.10,'Metal')
 g.loft([octagon(1.45,-1.99,2.25,1.59,.43),octagon(1.49,-1.77,2.23,1.80,.48),octagon(1.24,-1.42,2.18,2.12,.40)])
 g.cyl((-.60,.32,2.12),.32,.025,'Interior');g.cyl((.58,.12,2.12),.30,.025,'Interior')
 for x,y in [(-.6,.32),(.58,.12)]:g.ring((x,y,2.145),.245,.325,.045)
 turret=g.object('Turret',tp,bev=.012);bpy.context.view_layer.update()
 # modular cheek armour as independently detachable wedges, radar inset
 for s,label in [(1,'L'),(-1,'R')]:
  for j,(ya,yb) in enumerate([(-1.72,-.66),(-.64,.40),(.42,1.40)]):
   g=Geo();x0=1.26 if j==0 else 1.35;x1=1.51
   g.loft([[(s*x0,ya,1.65),(s*x1,ya+.1,1.65),(s*x1,yb,1.65),(s*x0,yb,1.65)],[(s*(x0-.10),ya+.22,2.06),(s*(x1-.10),ya+.24,2.00),(s*(x1-.10),yb,2.05),(s*(x0-.10),yb,2.10)]])
   bolts(g,[(s*(x1+.008),yy,zz) for yy in [ya+.28,yb-.12] for zz in [1.73,1.88]],(s,0,0),r=.019)
   g.object(f'Part_Turret_Armour_{label}{j+1}',(s*1.39,(ya+yb)/2,1.86),turret,.006)
  g=Geo();g.box((s*1.525,-.85,1.86),(.075,.60,.24));g.box((s*1.57,-.85,1.865),(.012,.52,.19),'Rubber');bolts(g,[(s*1.584,y,z) for y in [-1.08,-.62] for z in [1.80,1.93]],(s,0,0),r=.012)
  g.object(f'Part_Turret_Radar_{label}',(s*1.53,-.85,1.86),turret,.004)
 # mantlet trunnion, barrel starts exactly at exit
 gp=(0,-1.65,1.86);g=Geo();g.loft([octagon(.46,-2.18,-1.5,1.59,.09),octagon(.35,-2.12,-1.48,2.12,.08)])
 g.cyl((0,-2.18,1.86),.23,.22,'Paint',(0,1,0),48)
 gun=g.object('Gun',gp,turret,.012);bpy.context.view_layer.update()
 bp=(0,-2.29,1.86);g=Geo()
 # concentric tube, thermal sleeve, fume extractor and restrained collars
 for ya,yb,r in [(-2.29,-2.82,.157),(-2.82,-3.20,.14),(-3.20,-3.68,.205),(-3.68,-4.02,.137),(-4.02,-6.78,.105),(-6.78,-7.05,.115)]:
  g.ring((0,(ya+yb)/2,1.86),.061,r,abs(yb-ya),'Paint' if yb>-6.9 else 'Metal',(0,1,0),48)
 for y in [-2.37,-2.74,-3.18,-3.68,-3.86,-4.03,-6.77]:g.ring((0,y,1.86),.11,.151 if y>-4 else .12,.045,'Paint',(0,1,0),48)
 for i in range(14):
  a=i*math.tau/14;g.line([(math.cos(a)*.16,-2.4,1.86+math.sin(a)*.16),(math.cos(a)*.16,-2.69,1.86+math.sin(a)*.16)],.006,'Paint',6)
 g.box((0,-6.90,2.012),(.105,.17,.085),'Paint');g.box((0,-6.987,2.012),(.060,.007,.042),'Glass')
 barrel=g.object('Barrel',bp,gun,.003);bpy.context.view_layer.update();empty('Muzzle',(0,-7.05,1.86),barrel)
 # rolling gear, six equal road wheels each side + raised end wheels + return rollers
 for s,label in [(1,'L'),(-1,'R')]:
  entries=[(-3.05,.82,.43,'idler')]+[(y,.52,.43,'road') for y in [-2.4,-1.45,-.50,.45,1.40,2.35]]+[(3.08,.85,.44,'sprocket')]+[(y,1.16,.18,'return') for y in [-1.9,-.1,1.75]]
  for j,(y,z,r,kind) in enumerate(entries):
   c=(s*1.45,y,z);g=Geo()
   g.cyl(c,r,.39,'Rubber' if kind=='road' else 'TrackSteel',(1,0,0),48)
   for side in [-1,1]:
    x=s*1.45+side*.207
    g.ring((x,y,z),r*.62,r*.90,.033,'Paint',(1,0,0),48)
    g.cyl((x+side*.012,y,z),r*.69,.032,'Paint',(1,0,0),48)
    g.ring((x+side*.03,y,z),r*.20,r*.26,.022,'Metal',(1,0,0),32)
    g.cyl((x+side*.037,y,z),r*.16,.038,'Paint',(1,0,0),24)
    bolts(g,[(x+side*.037,y+math.cos(a)*r*.42,z+math.sin(a)*r*.42) for a in np.arange(0,math.tau,math.tau/8)],(1,0,0),r=.017 if r>.3 else .009)
   if kind=='sprocket':
    for a in np.arange(0,math.tau,math.tau/14):g.box((s*1.45,y+math.cos(a)*r,z+math.sin(a)*r),(.40,.09,.09),'TrackSteel',Matrix.Rotation(a,3,'X'))
   wh=g.object(f'Wheel_{label}{j+1}',c,bev=.003)
   for p in wh.data.polygons:
    if len(p.vertices)==4:p.use_smooth=True
  make_track(s,label)
 # Each sawtooth plate has real thickness, fittings, mounting bosses underneath.
 for s,label in [(1,'L'),(-1,'R')]:
  for i in range(7):
   ya=-3.25+i*.91;yb=ya+.895;g=Geo()
   yz=[(ya,1.39),(yb,1.39),(yb,.91)]
   for k in range(4):yz.extend([(yb-k*.223-.10,.83),(yb-(k+1)*.223,.91)])
   vs=[(s*x,y,z) for x in [1.69,1.75] for y,z in yz];n=len(yz)
   g.add(vs,[tuple(reversed(range(n))),tuple(range(n,2*n))]+[(j,(j+1)%n,(j+1)%n+n,j+n) for j in range(n)])
   bolts(g,[(s*1.757,y,1.33) for y in [ya+.10,yb-.10]],(s,0,0),r=.019)
   g.box((s*1.725,(ya+yb)/2,1.41),(.11,.15,.05),'Metal')
   g.object(f'Part_Skirt_{label}{i+1}',(s*1.72,(ya+yb)/2,1.12),bev=.004)
  # four bent front/rear fenders, frontal lamp assemblies
  for front,y in [('F',-3.36),('R',3.34)]:
   g=Geo();g.box((s*1.45,y,1.29),(.70,.73,.10),'Paint',Matrix.Rotation(.22 if front=='F' else -.20,3,'X'))
   g.box((s*1.47,y+(-.32 if front=='F' else .32),1.10),(.64,.055,.25),'Rubber')
   g.object(f'Part_Fender_{front}{label}',(s*1.45,y,1.25),bev=.008)
  g=Geo();g.box((s*1.12,-3.32,1.20),(.36,.13,.17),'Rubber')
  for x in [s*1.12-.09,s*1.12+.09]:g.cyl((x,-3.395,1.21),.059,.024,'Lamps',(0,1,0),24)
  g.line([(s*.91,-3.41,1.12),(s*.91,-3.41,1.33),(s*1.34,-3.41,1.33),(s*1.34,-3.41,1.12)],.015,'Metal')
  g.object(f'Part_LampGuard_{label}',(s*1.12,-3.36,1.23),bev=.003)
  g=Geo();g.box((s*1.30,3.78,1.13),(.32,.07,.22));g.cyl((s*1.3,3.823,1.14),.07,.018,'Lamps',(0,1,0),24);g.object(f'Part_TailLamp_{label}',(s*1.3,3.77,1.13),bev=.004)
 # engine deck complete below separately detachable grilles
 for x in [-.67,.67]:
  g=Geo();g.box((x,2.93,1.492),(1.18,1.10,.035),'Rubber')
  g.ring((x,2.96,1.525),.42,.46,.035,'Metal',n=64)
  for yy in np.arange(2.46,3.45,.055):g.box((x,yy,1.535),(1.08,.018,.025),'Paint')
  for xx in np.arange(x-.5,x+.51,.12):g.box((xx,2.94,1.52),(.018,1.02,.026),'Metal')
  g.object('Part_EngineGrille_'+('L' if x>0 else 'R'),(x,2.94,1.52),bev=.003)
 g=Geo();g.box((0,3.70,1.36),(1.95,.15,.20));g.object('Part_ExhaustShroud',(0,3.7,1.36),bev=.009)
 # bustle bins and tubular cage wrap rear turret
 g=Geo();g.box((0,2.17,1.88),(2.67,.46,.43));
 for x in [-.91,0,.91]:
  g.box((x,2.409,1.9),(.86,.018,.32));bolts(g,[(x+dx,2.429,z) for dx in [-.35,.35] for z in [1.78,2.02]],(0,1,0))
 g.object('Part_Turret_BustleBins',(0,2.17,1.88),turret,.012)
 g=Geo()
 for z in [1.66,1.82,1.99,2.09]:g.line([(-1.48,1.51,z),(-1.48,2.52,z),(1.48,2.52,z),(1.48,1.51,z)],.021,'Paint')
 for x in [-1.48,-.95,0,.95,1.48]:g.line([(x,2.52,1.64),(x,2.52,2.12)],.023,'Paint')
 g.object('Part_Turret_BustleRack',(0,2.39,1.88),turret,.003)
 # hatches: opaque recessed wells, hinged lids with bars and latches
 for name,c,r,parent in [('Commander',(-.6,.32,2.17),.28,turret),('Loader',(.58,.12,2.17),.265,turret),('Driver',(.62,-2.28,1.54),.275,None)]:
  g=Geo();g.cyl(c,r,.047,'Paint',n=12);g.ring((c[0],c[1],c[2]+.029),r-.045,r-.025,.012,'Metal',n=12)
  g.line([(c[0]-.09,c[1],c[2]+.03),(c[0]-.09,c[1],c[2]+.085),(c[0]+.09,c[1],c[2]+.085),(c[0]+.09,c[1],c[2]+.03)],.014,'Paint')
  g.cyl((c[0],c[1]+r,c[2]),.039,.26,'Metal',(1,0,0),16)
  g.object('Hatch_'+name,(c[0],c[1]+r,c[2]),parent,.004)
 # optical panoramic towers with armoured hood, independent glass panes
 for label,x,y in [('Commander',-.70,-.23),('Gunner',.66,-1.08)]:
  g=Geo();g.cyl((x,y,2.13),.18,.12,'Paint',n=32);g.box((x,y,2.29),(.28,.25,.25));g.box((x,y-.132,2.29),(.19,.012,.17),'Glass');g.box((x,y,2.427),(.32,.29,.025))
  g.object('Part_Turret_Sight_'+label,(x,y,2.24),turret,.007)
 # smoke dischargers, near corners
 for s,label in [(1,'L'),(-1,'R')]:
  g=Geo();g.box((s*1.16,-1.38,2.055),(.28,.29,.075))
  for yy in [-1.45,-1.34]:
   for xx in [s*1.1,s*1.23]:g.ring((xx,yy,2.115),.026,.044,.13,'Metal',(0,-.5,.87),16)
  g.object('Part_Turret_Smoke_'+label,(s*1.16,-1.39,2.10),turret,.003)
  g=Geo();g.cyl((s*1.04,1.52,2.16),.055,.10);g.cyl((s*1.04,1.52,2.33),.012,.30,'Metal',n=12);g.object('Part_Turret_Antenna_'+label,(s*1.04,1.52,2.27),turret,.002)
 # roof machine gun, pivot and receiver / barrel / ammo box
 g=Geo();g.cyl((-.52,.61,2.22),.075,.19,'Metal');g.box((-.52,.43,2.37),(.12,.42,.13),'Metal');g.cyl((-.52,-.06,2.38),.024,.60,'Metal',(0,1,0),24)
 g.ring((-.52,-.38,2.38),.013,.028,.07,'Metal',(0,1,0),20);g.box((-.72,.47,2.33),(.24,.26,.20));g.box((-.52,.71,2.35),(.10,.20,.07),'Rubber')
 g.object('MG',(-.52,.61,2.24),turret,.003)
 # tied down tow cables and deck tools
 for s,label in [(1,'L'),(-1,'R')]:
  g=Geo();pts=[(s*1.49,yy,1.5+.025*math.sin(yy*2)) for yy in np.linspace(-1.75,2.8,32)];g.line(pts,.022,'Metal',10)
  for yy in [-1.75,2.8]:g.ring((s*1.49,yy,1.52),.044,.07,.025,'Metal',n=20)
  for yy in [-1.5,.1,1.8]:g.box((s*1.49,yy,1.52),(.11,.09,.04))
  g.object('Part_TowCable_'+label,(s*1.49,.5,1.52),bev=.002)
  g=Geo();g.box((s*1.16,2.03,1.52),(.30,.64,.12));g.line([(s*1.16,1.77,1.6),(s*1.16,2.3,1.6)],.028,'Metal');g.object('Part_ToolBox_'+label,(s*1.16,2.03,1.56),bev=.008)
 for name,p,parent in [('Seat_Commander',(-.6,.32,2.24),turret),('Seat_Driver',(.62,-2.28,1.6),None),('Exhaust',(0,3.79,1.26),None),('Light_Head_L',(1.12,-3.42,1.21),None),('Light_Head_R',(-1.12,-3.42,1.21),None),('Fx_Engine',(0,2.95,1.53),None),('Fx_Ammo',(0,.4,.9),None),('Fx_Hatch',(-.6,.32,2.23),turret)]:empty(name,p,parent)
 bpy.context.view_layer.update()
 return hull,turret,gun,barrel

# capsule track centreline, bottom touches exactly ground after thickness
TRACK_R=.59; TRACK_Y=2.95; TRACK_Z=.66

def track_path(t):
 # perimeter in y/z; straight bottom -> front arc -> upper -> rear arc
 L=4*TRACK_Y+2*math.pi*TRACK_R;t=t%L
 if t<2*TRACK_Y:return (-TRACK_Y+t,.07,0)
 t-=2*TRACK_Y
 if t<math.pi*TRACK_R:
  a=-math.pi/2+t/TRACK_R;return(TRACK_Y+TRACK_R*math.cos(a),TRACK_Z+TRACK_R*math.sin(a),a+math.pi/2)
 t-=math.pi*TRACK_R
 if t<2*TRACK_Y:return(TRACK_Y-t,1.25,math.pi)
 t-=2*TRACK_Y;a=math.pi/2+t/TRACK_R;return(-TRACK_Y+TRACK_R*math.cos(a),TRACK_Z+TRACK_R*math.sin(a),a+math.pi/2)

def make_track(s,label,broken=False,parent=None):
 g=Geo();L=4*TRACK_Y+math.tau*TRACK_R;N=94
 for i in range(N):
  y,z,a=track_path(i*L/N)
  if broken:
   if y< -2.7 and z>.2:continue
   if z>1.0:z=.13+max(0,(y+.8))*.10;a=0
   if i<14:y=-4.3+i*.145;z=.07;a=0
  rot=Matrix.Rotation(a,3,'X');c=Vector((s*1.45,y,z))
  g.box(c,(.60,L/N*.92,.105),'TrackSteel',rot)
  for dx in [-.155,.155]:g.box(c+rot@Vector((dx,0,-.061)),(.24,L/N*.69,.024),'Rubber' if not broken else 'TrackSteel',rot)
  g.box(c+rot@Vector((0,0,.075)),(.08,.065,.10),'TrackSteel',rot)
  g.cyl(c+rot@Vector((0,L/N*.45,0)),.025,.66,'TrackSteel',(1,0,0),10)
 name=f'Track_{label}'+('_Broken' if broken else '')
 o=g.object(name,(s*1.45,0,0) if not broken else (0,0,0),parent,bev=.002,collection=damage if broken else healthy)
 if not broken:
  # V is arc length once around loop; U runs across belt.
  uv=o.data.uv_layers.active
  for p in o.data.polygons:
   for li in p.loop_indices:
    v=o.data.vertices[o.data.loops[li].vertex_index].co+o.location;y,z=v.y,v.z
    if y>TRACK_Y:dist=2*TRACK_Y+(math.atan2(z-TRACK_Z,y-TRACK_Y)+math.pi/2)*TRACK_R
    elif y< -TRACK_Y:dist=4*TRACK_Y+math.pi*TRACK_R+(math.atan2(z-TRACK_Z,y+TRACK_Y)-math.pi/2)%math.tau*TRACK_R
    elif z<TRACK_Z:dist=y+TRACK_Y
    else:dist=2*TRACK_Y+math.pi*TRACK_R+TRACK_Y-y
    uv.data[li].uv=((v.x-s*1.45)/.66+.5,dist/L)
 return o
PY" in /home/claude-agent/forge-build/forge-assets/jobs/k2-tank-v1
 succeeded in 0ms:
hook: PreToolUse
hook: PreToolUse
hook: PreToolUse
hook: PreToolUse
hook: PreToolUse Completed
hook: PreToolUse Completed
hook: PreToolUse Completed
hook: PreToolUse Completed
exec
/bin/bash -lc "date -u '+%FT%TZ'; ssh gex44 'ps -eo pid,etimes,args | grep \"[b]lender -b\" | head -5'" in /home/claude-agent/forge-build/forge-assets/jobs/k2-tank-v1
 succeeded in 594ms:
2026-10-11T16:31:25Z
1367142     123 bash -c rm /root/fal-author/type99-tank-v1/textures/Paint_base.png /root/fal-author/type99-tank-v1/textures/Paint_normal.png /root/fal-author/type99-tank-v1/textures/Paint_orm.png /root/blender-spike/blender-5.2.0-linux-x64/blender -b --python-exit-code 1 --python /root/fal-author/type99-tank-v1/build_type99-tank.py > /root/fal-author/type99-tank-v1/build.log 2>&1
1371076      79 bash -c /root/blender-spike/blender-5.2.0-linux-x64/blender -b --python-exit-code 1 --python /root/fal-author/t55-tank-v1/build_t55-tank.py > /root/fal-author/t55-tank-v1/build.log 2>&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 >> build_k2-tank.py <<'PY'

def duplicate(o,name,parent=None,col=damage):
 n=o.copy();n.data=o.data.copy();n.name=name;sc.collection.objects.link(n)
 world=o.matrix_world.copy();n.parent=parent;n.matrix_world=world;col.append(n);return n

def make_damage(hull,turret,gun,barrel):
 hd=empty('Hull_Damage',(0,0,0),col=damage);td=empty('Turret_Damage',tuple(turret.location),col=damage);bpy.context.view_layer.update()
 candidates=[o for o in healthy if o.name.startswith('Part_Skirt_')][:10]+[o for o in healthy if o.name.startswith(('Part_Fender_','Part_Turret_Armour_','Part_Turret_Bustle'))]
 twins={}
 for o in candidates:
  n=duplicate(o,o.name.replace('Part_','Dmg_',1),td if o.parent==turret else hd)
  # damage in local space, leaving the mount edge attached
  for v in n.data.vertices:
   z=v.co.z;f=max(0,min(1,(-z+.05)*3))
   v.co.x+=f*(.10*math.sin(v.co.y*5)+.10)*(1 if o.location.x>=0 else -1)
   v.co.z-=f*.09*(.6+.4*math.sin(v.co.y*9))
  # Visible torn slot through each plate using an irregular cutting volume.
  if 'Skirt' in o.name:
   bpy.ops.mesh.primitive_uv_sphere_add(segments=12,ring_count=8,radius=1,location=n.matrix_world.translation+Vector((0,.10,-.08)))
   cut=bpy.context.object;cut.scale=(.34,.105,.13);bpy.context.view_layer.objects.active=n
   mod=n.modifiers.new('Shell perforation','BOOLEAN');mod.operation='DIFFERENCE';mod.object=cut
   bpy.ops.object.modifier_apply(modifier=mod.name);bpy.data.objects.remove(cut,do_unlink=True)
  twins[o.name]=n.name
 # Eight armour-face scars, 4 impacts each, millimetres proud of the underlying face.
 for is_turret,parent in [(False,hd),(True,td)]:
  for face in ['Front','L','R','Rear']:
   g=Geo()
   if is_turret:
    positions={'Front':[(x,-1.90,1.70) for x in [-.88,-.59,.63,.92]],'L':[(1.456,y,1.74) for y in [-.7,-.05,.65,1.25]],'R':[(-1.456,y,1.74) for y in [-.7,-.05,.65,1.25]],'Rear':[(x,2.235,1.78) for x in [-.8,-.32,.30,.8]]}
   else:
    positions={'Front':[(x,-3.565,1.185) for x in [-.85,-.35,.27,.80]],'L':[(1.445,y,1.18) for y in [-2.1,-.75,.8,2.25]],'R':[(-1.445,y,1.18) for y in [-2.1,-.75,.8,2.25]],'Rear':[(x,3.755,1.01) for x in [-.8,-.3,.3,.8]]}
   normal=Vector({'Front':(0,-1,0),'Rear':(0,1,0),'L':(1,0,0),'R':(-1,0,0)}[face]);u=normal.cross(Vector((0,0,1))).normalized();v=Vector((0,0,1))
   for k,p in enumerate(positions[face]):
    c=Vector(p)+normal*.003;r=.055 if k<3 else .085
    # irregular soot apron, raised bright petalled steel rim, black cavity
    vv=[c+normal*.001]+[c+u*math.cos(a)*r*(2.0+.25*math.sin(a*5+k))+v*math.sin(a)*r*1.55 for a in np.arange(0,math.tau,math.tau/18)]
    g.add(vv,[(0,i+1,(i+1)%18+1) for i in range(18)],'Burnt')
    g.cyl(c+normal*.002,r*.63,.002,'Burnt',normal,24)
    # rim alternates torn raised petal tips, its base follows armour
    rings=[]
    for rad,d in [(r*1.15,.001),(r*.77,.019),(r*.62,.006)]:
     rings.append([c+(u*math.cos(a)+v*math.sin(a))*rad+normal*(d*(1+.35*math.cos(a*7))) for a in np.arange(0,math.tau,math.tau/28)])
    g.loft(rings,'Scars')
    if k<3:g.line([c+u*.07,c+u*.17+v*.035,c+u*.24+v*.045],.008,'Scars',6)
   g.object('Scar_'+('Turret' if is_turret else 'Hull')+'_'+face,tuple(parent.location),parent,0,damage)
 make_track(1,'L',True,hd);make_track(-1,'R',True,hd)
 # gun damage assembled from original mantlet and a bent, open-ended barrel
 bg=duplicate(gun,'Gun_Broken',td);bpy.context.view_layer.update()
 bb=duplicate(barrel,'_burstbarrel',bg)
 for v in bb.data.vertices:
  yy=v.co.y
  if yy< -1.8:v.co.z-=(-yy-1.8)*.21
  if yy< -2.5:v.co.x+=.10*math.sin((-yy-2.5)*1.3)
 # join barrel into mantlet preserving Gun origin
 join_into(bg,[bb]);damage.remove(bb) if bb in damage else None
 # wreck copies from healthy, preserving all relative mesh alignments
 wh_pieces=[];wt_pieces=[]
 skip_parts={f'Part_Skirt_{s}{i}' for s in ['L','R'] for i in [1,3,5,7]}
 skip_parts.update(['Part_Fender_FL','Part_Fender_RR','Part_Turret_BustleBins','Part_Turret_Armour_L1'])
 for o in list(healthy):
  if o.type"'!='"'MESH' or o.name in skip_parts:continue
  is_t=(o==turret or o.parent==turret or o==gun or o==barrel)
  n=duplicate(o,'_wreck_'+o.name,None,col=[])
  n.data.materials.clear();n.data.materials.append(M['Burnt'])
  for p in n.data.polygons:p.material_index=0
  if o.name.startswith('Wheel_'):n.location.z-=.05
  if o.name.startswith('Hatch_'):n.rotation_euler.x=math.radians(-72)
  if o in [gun,barrel]:
   pv=gun.matrix_world.translation;rot=Matrix.Translation(pv)@Matrix.Rotation(math.radians(14),4,'X')@Matrix.Translation(-pv);n.matrix_world=rot@n.matrix_world
  if o.name.startswith('Track_'):
   for v in n.data.vertices:
    if v.co.z>1:v.co.z-=.22*max(0,1-(v.co.y/3)**2)
  if 'EngineGrille' in o.name:
   for v in n.data.vertices:v.co.z+=.28*max(0,1-abs(v.co.y)*1.5)
  if o==hull:
   bpy.ops.mesh.primitive_cylinder_add(vertices=64,radius=.98,depth=1.3,location=(0,-.3,1.4));cut=bpy.context.object
   bpy.context.view_layer.objects.active=n;mod=n.modifiers.new('Open burnt turret well','BOOLEAN');mod.operation='DIFFERENCE';mod.object=cut;bpy.ops.object.modifier_apply(modifier=mod.name);bpy.data.objects.remove(cut,do_unlink=True)
  (wt_pieces if is_t else wh_pieces).append(n)
 # well floor and scorched seating, ring and underside basket stub
 g=Geo();g.cyl((0,-.3,.56),.95,.08,'Burnt',n=48);g.ring((0,-.3,1.43),.94,1.04,.12,'Burnt',n=64)
 for x in [-.4,.4]:g.box((x,-.3,.8),(.32,.45,.36),'Burnt')
 wh_pieces.append(g.object('_well',bev=.004,collection=[]))
 g=Geo();g.ring((0,-.3,1.48),.74,.95,.18,'Burnt',n=64);g.cyl((0,-.3,1.15),.70,.12,'Burnt',n=48)
 for a in np.arange(0,math.tau,math.tau/8):g.line([(.7*math.cos(a),-.3+.7*math.sin(a),1.16),(.83*math.cos(a),-.3+.83*math.sin(a),1.5)],.036,'Burnt')
 wt_pieces.append(g.object('_basket',bev=.003,collection=[]))
 wh=wh_pieces[0];join_into(wh,wh_pieces[1:]);wh.name='Wreck_Hull';origin(wh,(0,0,0));damage.append(wh)
 wt=wt_pieces[0];join_into(wt,wt_pieces[1:]);wt.name='Wreck_Turret';origin(wt,tuple(turret.location));damage.append(wt)
 for o in [wh,wt]:
  bpy.context.view_layer.objects.active=o;mod=o.modifiers.new('Wreck mesh budget','DECIMATE');mod.ratio=.40;bpy.ops.object.modifier_apply(modifier=mod.name)
 return twins

def origin(o,p):
 world=o.matrix_world.copy();dest=Matrix.Translation(p);o.data.transform(dest.inverted()@world);o.matrix_world=dest

def join_into(base,others):
 bpy.ops.object.select_all(action='DESELECT');base.select_set(True)
 for o in others:o.select_set(True)
 bpy.context.view_layer.objects.active=base;bpy.ops.object.join();base.select_set(False)

def export(objects,filename):
 bpy.ops.object.select_all(action='DESELECT')
 for o in objects:
  if o.name in bpy.data.objects:o.hide_set(False);o.hide_viewport=False;o.hide_render=False;o.select_set(True)
 bpy.ops.export_scene.gltf(filepath=str(ROOT/filename),export_format='GLB',use_selection=True,export_yup=True,export_apply=False,export_texcoords=True,export_normals=True,export_materials='EXPORT',export_extras=True)
 # Explicit glTF paint factor, independent of exporter mix-node recognition.
 p=ROOT/filename;data=p.read_bytes();jlen=struct.unpack_from('<I',data,12)[0];doc=json.loads(data[20:20+jlen]);blob=data[20+jlen:]
 for m in doc.get('materials',[]):
  if m['name']=='Paint':m['pbrMetallicRoughness']['baseColorFactor']=PAINTS[0][1]+[1]
 js=json.dumps(doc,separators=(',',':')).encode();js+=b' '*((-len(js))%4)
 p.write_bytes(struct.pack('<4sII',b'glTF',2,20+len(js)+len(blob))+struct.pack('<I4s',len(js),b'JSON')+js+blob)
 print('EXPORTED',filename,p.stat().st_size,flush=True)

def metrics(objects):
 bpy.context.view_layer.update();pts=[o.matrix_world@Vector(c) for o in objects if o.type=='MESH' for c in o.bound_box]
 cv=lambda p:[round(p.x,5),round(p.z,5),round(-p.y,5)]
 return {'nodes':[{'name':o.name,'parent':o.parent.name if o.parent else None,'position':cv(o.matrix_world.translation)} for o in objects], 'bounds':{'min':[min(cv(p)[i] for p in pts) for i in range(3)],'max':[max(cv(p)[i] for p in pts) for i in range(3)]},'triangles':sum(len(p.vertices)-2 for o in objects if o.type=='MESH' for p in o.data.polygons)}

def studio():
 # new render stage; never exported
 mat=bpy.data.materials.new('Studio');mat.diffuse_color=(.28,.30,.32,1);mat.use_nodes=True;mat.node_tree.nodes.get('Principled BSDF').inputs['Base Color'].default_value=(.28,.30,.32,1);mat.node_tree.nodes.get('Principled BSDF').inputs['Roughness'].default_value=.86
 bpy.ops.mesh.primitive_plane_add(size=200);floor=bpy.context.object;floor.name='_StudioFloor';floor.location.z=-.015;floor.data.materials.append(mat)
 sc.world.use_nodes=True;sc.world.node_tree.nodes.get('Background').inputs[0].default_value=(.55,.63,.74,1);sc.world.node_tree.nodes.get('Background').inputs[1].default_value=.55
 for name,loc,energy,size in [('Key',(2,-6,10),1900,7),('Fill',(-7,-1,5),1100,6),('Rim',(2,6,8),2100,5)]:
  data=bpy.data.lights.new(name,'AREA');data.energy=energy;data.shape='DISK';data.size=size;o=bpy.data.objects.new(name,data);sc.collection.objects.link(o);o.location=loc;o.rotation_euler=(Vector((0,0,1))-o.location).to_track_quat('-Z','Y').to_euler()
 data=bpy.data.cameras.new('Camera');cam=bpy.data.objects.new('Camera',data);sc.collection.objects.link(cam);sc.camera=cam;data.type='ORTHO';data.ortho_scale=12.8
 camera((10,-14,8.0),(0,-1.05,1.05))
 return floor

def camera(loc,target,scale=None):
 cam=sc.camera;cam.location=loc;cam.rotation_euler=(Vector(target)-cam.location).to_track_quat('-Z','Y').to_euler()
 if scale:cam.data.ortho_scale=scale

def render(name,w=1920,h=1080,samples=32):
 sc.render.resolution_x=w;sc.render.resolution_y=h;sc.render.resolution_percentage=100;sc.cycles.samples=samples;sc.render.filepath=str(ROOT/name);bpy.ops.render.render(write_still=True);print('RENDER',name,flush=True)

def composite(files,name):
 arrays=[]
 for p in files:
  im=bpy.data.images.load(str(ROOT/p),check_existing=False);a=np.array(im.pixels[:],dtype=np.float32).reshape(im.size[1],im.size[0],4);arrays.append(a);bpy.data.images.remove(im)
 h,w,_=arrays[0].shape;out=np.concatenate([np.concatenate(arrays[3:],axis=1),np.concatenate(arrays[:3],axis=1)],axis=0)
 im=bpy.data.images.new(name,width=w*3,height=h*2);im.pixels.foreach_set(out.ravel());im.filepath_raw=str(ROOT/name);im.file_format='PNG';im.save()


def proof():
 # Required proof is strictly a fresh-scene import of both delivered binary files.
 bpy.ops.object.select_all(action='SELECT');bpy.ops.object.delete(use_global=False)
 bpy.ops.import_scene.gltf(filepath=str(ROOT/'k2-tank.glb'));a=list(sc.objects)
 bpy.ops.import_scene.gltf(filepath=str(ROOT/'k2-tank-damage.glb'));b=[o for o in sc.objects if o not in a]
 studio();names={o.name:o for o in a+b}
 def visibility(oo,show):
  for o in oo:o.hide_render=not show
 def subtree(o):return [o]+list(o.children_recursive)
 def state_reset():visibility(a,True);visibility(b,False)
 files=[]
 for i in range(6):
  state_reset()
  if i==1:
   for o in b:
    if o.name.startswith('Scar_'):o.hide_render=False
   for key in ['Skirt_L1','Skirt_L2','Skirt_L3','Skirt_R1','Fender_FL','Turret_Armour_L1']:
    if 'Part_'+key in names:names['Part_'+key].hide_render=True
    if 'Dmg_'+key in names:names['Dmg_'+key].hide_render=False
  if i==2:
   for o in a:
    if o.name.startswith('Part_'):o.hide_render=True
  if i==3:
   names['Track_L'].hide_render=True;names['Track_L_Broken'].hide_render=False
   visibility(subtree(names['Gun']),False);names['Gun_Broken'].hide_render=False
  if i>=4:
   visibility(a,False);names['Wreck_Hull'].hide_render=False;names['Wreck_Turret'].hide_render=False
  if i==5:
   names['Wreck_Turret'].location=(3.35,.55,.78);names['Wreck_Turret'].rotation_euler=(.15,math.radians(125),.32)
  render(f'_state{i}.png',800,450,16);files.append(f'_state{i}.png')
 composite(files,'states.png')
 # Restore frame for proof of six recolour factors.
 state_reset();camera((10,-14,8),(0,-1.05,1.05),12.8)
 paints=[m for m in bpy.data.materials if m.name=='Paint' or m.name.startswith('Paint.')]
 files=[]
 for i,(name,c) in enumerate(PAINTS):
  for mat in paints:
   bs=next((n for n in mat.node_tree.nodes if n.type=='BSDF_PRINCIPLED'),None)
   if not bs:continue
   # Imported glTF may express texture*factor through a multiply node.
   socket=bs.inputs['Base Color']
   if socket.is_linked:
    node=socket.links[0].from_node
    if node.type=='MIX':
     for s in node.inputs:
      if s.type=='RGBA' and not s.is_linked:s.default_value=tuple(c)+(1,)
    elif node.type=='MIX_RGB':
     for s in node.inputs[1:]:
      if not s.is_linked:s.default_value=tuple(c)+(1,)
    else:
     nt=mat.node_tree;old=socket.links[0].from_socket;mix=nt.nodes.new('ShaderNodeMixRGB');mix.blend_type='MULTIPLY';mix.inputs[0].default_value=1;mix.inputs[2].default_value=tuple(c)+(1,);nt.links.new(old,mix.inputs[1]);nt.links.new(mix.outputs[0],socket)
   else:socket.default_value=tuple(c)+(1,)
  render(f'_paint{i}.png',800,450,16);files.append(f'_paint{i}.png')
 composite(files,'paints.png')
 # source rotation checks from exported nodes; all attached meshes follow their pivots
 state_reset()
 for mat in paints:
  for n in mat.node_tree.nodes:
   if n.type=='MIX_RGB':
    for s in n.inputs[1:]:
     if not s.is_linked:s.default_value=tuple(PAINTS[0][1])+(1,)
 for o in a:
  if o.name=='Turret':o.rotation_euler.z+=math.radians(30)
  elif o.name in ['Gun','MG'] or o.name.startswith(('Wheel_','Hatch_')):o.rotation_euler.x+=math.radians(30)
 render('pivots.png',1280,720,16)
 print('PROOF_COMPLETE',flush=True)

if '--proof-only' in sys.argv:
 proof()
else:
 hull,turret,gun,barrel=build()
 export(healthy,'k2-tank.glb');ha=metrics(healthy)
 # Healthy image and clay establish the geometry before damage is constructed.
 studio();render('final.png',1920,1080,40)
 camera((12,0,3.2),(0,-1.05,1.12),12.1);render('side.png',1920,1080,32)
 camera((10,-14,8),(0,-1.05,1.05),12.8)
 clay=bpy.data.materials.new('_Clay');clay.diffuse_color=(.35,.35,.35,1);clay.use_nodes=True;clay.node_tree.nodes.get('Principled BSDF').inputs['Base Color'].default_value=(.35,.35,.35,1)
 sc.view_layers[0].material_override=clay;render('clay.png',1920,1080,24);sc.view_layers[0].material_override=None
 twins=make_damage(hull,turret,gun,barrel)
 export(damage,'k2-tank-damage.glb');da=metrics(damage)
 manifest={'schema':'tank-damage/v1','units':'metres','axes':{'forward':'+Z','up':'+Y','left':'+X'},'healthy':ha,'damaged':da,'paints':[{'name':n,'linearRGB':c} for n,c in PAINTS], 'damage':{'parts':[{'part':o.name,'twin':twins.get(o.name)} for o in healthy if o.name.startswith('Part_')],'scars':[o.name for o in damage if o.name.startswith('Scar_')],'broken':{'Track_L':'Track_L_Broken','Track_R':'Track_R_Broken','Gun':'Gun_Broken'},'wreck':['Wreck_Hull','Wreck_Turret']}}
 (ROOT/'nodes.json').write_text(json.dumps(manifest,indent=2))
 (ROOT/'NOTES.md').write_text('K2 Black Panther style MBT, metre scale, articulated and destructible; no insignia.\\n'+f'Triangles: healthy {ha[\"triangles\"]:,}; damage {da[\"triangles\"]:,}.\\n'+'Materials: Paint, Rubber, TrackSteel, Metal, Glass, Lamps, Interior; damage also Burnt and Scars.\\n'+'Textures: Cycles-baked shared tiles; Paint 1024px, other maps 256–512px, ORM at most 512px.\\n'+'Poly Haven CC0 ids: metal_plate, rubberized_track, rusty_metal; https://polyhaven.com/license .\\n'+'Reference differences: simplified suspension internals and sensor internals; artistic battle damage; roof fittings exceed nominal turret height.\\n')
 proof()
PY
python3 -m py_compile build_k2-tank.py
scp build_k2-tank.py gex44:/root/fal-author/k2-tank-v1/
ssh gex44 '/root/blender-spike/blender-5.2.0-linux-x64/blender -b --python-exit-code 1 --python /root/fal-author/k2-tank-v1/build_k2-tank.py > /root/fal-author/k2-tank-v1/build.log 2>&1'" in /home/claude-agent/forge-build/forge-assets/jobs/k2-tank-v1
hook: PreToolUse
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exec
/bin/bash -lc "ssh gex44 'tail -20 /root/fal-author/k2-tank-v1/build.log'; date -u '+%FT%TZ'" in /home/claude-agent/forge-build/forge-assets/jobs/k2-tank-v1
 succeeded in 697ms:
2026-10-11T16:33:52Z

codex
The first full build is queued on the GPU host. It includes the rig and removable panels; the damage build derives its parts from those same meshes so the swaps will align.

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/bin/bash -lc "ssh gex44 'tail -25 /root/fal-author/k2-tank-v1/build.log; ls -lh /root/fal-author/k2-tank-v1/'; python3 - <<'PY'
from pathlib import Path
p=Path('build_k2-tank.py')
s=p.read_text().replace('import bpy, math, os, sys, json, struct, urllib.request, random','import bpy, bmesh, math, os, sys, json, struct, urllib.request, random')
s=s.replace(\"mesh.update()\\n  o=bpy.data.objects.new\", \"mesh.update()\\n  bm=bmesh.new();bm.from_mesh(mesh);bmesh.ops.recalc_face_normals(bm,faces=list(bm.faces));bm.to_mesh(mesh);bm.free()\\n  o=bpy.data.objects.new\")
s=s.replace(\"export(damage,'k2-tank-damage.glb');da=metrics(damage)\",\"\\n for o in damage:\\n  if o.type=='MESH':\\n   for slot in o.material_slots:\\n    if slot.material.name in ['Metal','Glass','Lamps']:slot.material=M['Scars']\\n    elif slot.material.name=='Interior':slot.material=M['Burnt']\\n export(damage,'k2-tank-damage.glb');da=metrics(damage)\")
p.write_text(s)
PY" in /home/claude-agent/forge-build/forge-assets/jobs/k2-tank-v1
 succeeded in 539ms:
INFO gpu_gate: gpu slot acquired by blender (pid 1388936, 6000 MiB, batch)
00:00.451  cycles           | WARNING HIPEW initialization failed: Error opening HIP dynamic library
/root/fal-author/k2-tank-v1/build_k2-tank.py:35: DeprecationWarning: 'Material.use_nodes' is expected to be removed in Blender 6.0
  mat=bpy.data.materials.new(name); mat.use_nodes=True; nt=mat.node_tree; n=nt.nodes; l=nt.links
Blender 5.2.0 LTS (hash fbe6228777e7 built 2026-07-14 01:32:04)
[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.
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
BAKED Paint
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
BAKED Rubber
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
BAKED TrackSteel
total 48K
-rw-r--r-- 1 root root 1.6K Oct 11 18:34 build.log
-rw-r--r-- 1 root root  37K Oct 11 18:33 build_k2-tank.py
drwxr-xr-x 2 root root 4.0K Oct 11 18:34 textures

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/bin/bash -lc "python3 - <<'PY'
from pathlib import Path
p=Path('build_k2-tank.py');s=p.read_text()
s=s.replace(\"g.cyl((.62,-2.28,1.46),.31,.10,'Interior');g.ring\", \"g.ring\")
s=s.replace(\" g.cyl((-.60,.32,2.12),.32,.025,'Interior');g.cyl((.58,.12,2.12),.30,.025,'Interior')\", \" # Crew wells are bored through the roof after assembly.\")
s=s.replace(\" bpy.context.view_layer.update()\\n return hull,turret,gun,barrel\", \"\\n for base,x,y,top,r in [(hull,.62,-2.28,1.5,.25),(turret,-.6,.32,2.14,.245),(turret,.58,.12,2.14,.235)]:\\n  bpy.ops.mesh.primitive_cylinder_add(vertices=48,radius=r,depth=.40,location=(x,y,top-.12));cut=bpy.context.object\\n  bpy.context.view_layer.objects.active=base;mod=base.modifiers.new('Crew hatch opening','BOOLEAN');mod.operation='DIFFERENCE';mod.object=cut;bpy.ops.object.modifier_apply(modifier=mod.name);bpy.data.objects.remove(cut,do_unlink=True)\\n  well=Geo();well.ring((x,y,top-.17),r-.009,r+.006,.31,'Interior',n=48);well.cyl((x,y,top-.33),r,.022,'Interior',n=48)\\n  lining=well.object('_crew_well',collection=[],bev=0);join_into(base,[lining])\\n bpy.context.view_layer.update()\\n return hull,turret,gun,barrel\")
p.write_text(s)
PY
ssh gex44 'tail -12 /root/fal-author/k2-tank-v1/build.log'" in /home/claude-agent/forge-build/forge-assets/jobs/k2-tank-v1
 succeeded in 630ms:
18:34:34 | INFO: Primitives created: 3
18:34:34 | INFO: Extracting primitive: Wheel_R11
18:34:34 | INFO: Primitives created: 3
18:34:34 | INFO: Finished glTF 2.0 export in 0.5610232353210449 s

EXPORTED k2-tank.glb 25974780
/root/fal-author/k2-tank-v1/build_k2-tank.py:436: DeprecationWarning: 'Material.use_nodes' is expected to be removed in Blender 6.0
  mat=bpy.data.materials.new('Studio');mat.diffuse_color=(.28,.30,.32,1);mat.use_nodes=True;mat.node_tree.nodes.get('Principled BSDF').inputs['Base Color'].default_value=(.28,.30,.32,1);mat.node_tree.nodes.get('Principled BSDF').inputs['Roughness'].default_value=.86
/root/fal-author/k2-tank-v1/build_k2-tank.py:438: DeprecationWarning: 'World.use_nodes' is expected to be removed in Blender 6.0
  sc.world.use_nodes=True;sc.world.node_tree.nodes.get('Background').inputs[0].default_value=(.55,.63,.74,1);sc.world.node_tree.nodes.get('Background').inputs[1].default_value=.55
00:34.768  render           | Saved: '/root/fal-author/k2-tank-v1/final.png'
RENDER final.png

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/bin/bash -lc "scp gex44:/root/fal-author/k2-tank-v1/final.png /tmp/k2-first.png; ssh gex44 'python3 - <<'\"'\"'PY'\"'\"'
import json,struct,collections
p=\"/root/fal-author/k2-tank-v1/k2-tank.glb\";b=open(p,\"rb\").read();d=json.loads(b[20:20+struct.unpack_from(\"<I\",b,12)[0]])
counts={m[\"name\"]:sum(d[\"accessors\"][p[\"indices\"]][\"count\"]//3 for p in m[\"primitives\"]) for m in d[\"meshes\"]}
print(\"TRIANGLES\",sum(counts.values()));print(sorted(counts.items(),key=lambda x:-x[1])[:12]);print(\"IMAGES\",[(i.get(\"name\"),d[\"bufferViews\"][i[\"bufferView\"]][\"byteLength\"]) for i in d[\"images\"]]);print(\"MATS\",[(m[\"name\"],m.get(\"pbrMetallicRoughness\")) for m in d[\"materials\"]])
PY'" in /home/claude-agent/forge-build/forge-assets/jobs/k2-tank-v1
 succeeded in 1978ms:
TRIANGLES 435700
[('Track_L', 66552), ('Track_R', 66552), ('Barrel', 17488), ('Hull', 16340), ('Wheel_L8', 10260), ('Wheel_R8', 10260), ('Part_TowCable_L', 9840), ('Part_TowCable_R', 9840), ('Wheel_L1', 8748), ('Wheel_L2', 8748), ('Wheel_L3', 8748), ('Wheel_L4', 8748)]
IMAGES [('Paint_normal', 918185), ('Paint_base', 314969), ('Paint_orm', 210551), ('Metal_normal', 367467), ('Metal_base', 161231), ('Metal_orm', 212004), ('Interior_normal', 102527), ('Interior_base', 37156), ('Interior_orm', 44021), ('Rubber_normal', 421056), ('Rubber_base', 86457), ('Rubber_orm', 123096), ('Lamps_normal', 102527), ('Lamps_base', 51250), ('Lamps_orm', 60775), ('TrackSteel_normal', 292083), ('TrackSteel_base', 259315), ('TrackSteel_orm', 118920), ('Glass_normal', 102527), ('Glass_base', 35433), ('Glass_orm', 60662)]
MATS [('Paint', {'baseColorTexture': {'index': 1}, 'metallicRoughnessTexture': {'index': 2}, 'baseColorFactor': [0.1, 0.13, 0.08, 1]}), ('Metal', {'baseColorTexture': {'index': 4}, 'metallicRoughnessTexture': {'index': 5}}), ('Interior', {'baseColorTexture': {'index': 7}, 'metallicRoughnessTexture': {'index': 8}}), ('Rubber', {'baseColorTexture': {'index': 10}, 'metallicRoughnessTexture': {'index': 11}}), ('Lamps', {'baseColorTexture': {'index': 13}, 'metallicRoughnessTexture': {'index': 14}}), ('TrackSteel', {'baseColorTexture': {'index': 16}, 'metallicRoughnessTexture': {'index': 17}}), ('Glass', {'baseColorTexture': {'index': 19}, 'metallicRoughnessTexture': {'index': 20}})]

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codex
The first render is back. The overall shape reads correctly, but the surface is too uniform, the roof needs more detail, and bevels pushed the mesh well over budget. I’m refining those areas and lowering the camera to match the reference more closely.

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/bin/bash -lc "ssh gex44 'tail -20 /root/fal-author/k2-tank-v1/build.log'; python3 - <<'PY'
from pathlib import Path
p=Path('build_k2-tank.py');s=p.read_text().replace(\"mod.segments=2;mod.affect\", \"mod.segments=1;mod.affect\")
s=s.replace(\"camera((10,-14,8.0)\",\"camera((10,-14,6.0)\").replace(\"camera((10,-14,8)\",\"camera((10,-14,6)\")
s=s.replace(\"a,b=(.40,.40,.40,1),(.94,.94,.94,1)\",\"a,b=(.26,.26,.26,1),(.98,.98,.98,1)\")
s=s.replace(\"l.new(mix.outputs[0],bs.inputs['Base Color']);bs.inputs\", \"\"\"# Baked fine streaks, broad mottling and dust film, neutral for recolouring.
 if name=='Paint':
  mapping=n.new('ShaderNodeVectorMath');mapping.operation='MULTIPLY';mapping.inputs[1].default_value=(5,24,1);l.new(uv.outputs['UV'],mapping.inputs[0])
  streak=n.new('ShaderNodeTexNoise');streak.inputs['Scale'].default_value=2.8;streak.inputs['Detail'].default_value=3.0;l.new(mapping.outputs[0],streak.inputs['Vector'])
  sr=n.new('ShaderNodeValToRGB');sr.color_ramp.elements[0].position=.29;sr.color_ramp.elements[0].color=(.28,.28,.28,1);sr.color_ramp.elements[1].position=.64;sr.color_ramp.elements[1].color=(1,1,1,1);l.new(streak.outputs['Fac'],sr.inputs[0])
  mm=n.new('ShaderNodeMixRGB');mm.blend_type='MULTIPLY';mm.inputs[0].default_value=.39;l.new(mix.outputs[0],mm.inputs[1]);l.new(sr.outputs[0],mm.inputs[2]);mix=mm
 l.new(mix.outputs[0],bs.inputs['Base Color']);bs.inputs\"\"\")
# budget collapse removes redundant bevel rings while preserving the original pivot and named assemblies
s=s.replace(\" export(healthy,'k2-tank.glb');ha=metrics(healthy)\",\" budget(healthy,126000)\\n export(healthy,'k2-tank.glb');ha=metrics(healthy)\")
s=s.replace(\" export(damage,'k2-tank-damage.glb');da=metrics(damage)\",\" budget(damage,105000)\\n export(damage,'k2-tank-damage.glb');da=metrics(damage)\")
pos=s.index('\\ndef export(objects,filename):')
s=s[:pos]+'''\\ndef budget(objects,target):
 total=sum(len(p.vertices)-2 for o in objects if o.type=='MESH' for p in o.data.polygons)
 if total>target:
  ratio=target/total*.985
  for o in objects:
   if o.type"'!='"'MESH':continue
   bpy.context.view_layer.objects.active=o
   mod=o.modifiers.new('Game geometry budget','DECIMATE');mod.ratio=ratio
   bpy.ops.object.modifier_apply(modifier=mod.name)
 print('BUDGET',total,'->',metrics(objects)['triangles'],flush=True)
''' + s[pos:]
p.write_text(s)
PY" in /home/claude-agent/forge-build/forge-assets/jobs/k2-tank-v1
 succeeded in 583ms:
01:13.606  render           | Saved: '/root/fal-author/k2-tank-v1/_state0.png'
RENDER _state0.png
01:15.826  render           | Saved: '/root/fal-author/k2-tank-v1/_state1.png'
RENDER _state1.png
01:18.065  render           | Saved: '/root/fal-author/k2-tank-v1/_state2.png'
RENDER _state2.png
01:20.377  render           | Saved: '/root/fal-author/k2-tank-v1/_state3.png'
RENDER _state3.png
01:22.557  render           | Saved: '/root/fal-author/k2-tank-v1/_state4.png'
RENDER _state4.png
01:24.760  render           | Saved: '/root/fal-author/k2-tank-v1/_state5.png'
RENDER _state5.png
01:27.846  render           | Saved: '/root/fal-author/k2-tank-v1/_paint0.png'
RENDER _paint0.png
01:30.460  render           | Saved: '/root/fal-author/k2-tank-v1/_paint1.png'
RENDER _paint1.png
01:32.647  render           | Saved: '/root/fal-author/k2-tank-v1/_paint2.png'
RENDER _paint2.png
01:35.207  render           | Saved: '/root/fal-author/k2-tank-v1/_paint3.png'
RENDER _paint3.png

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/bin/bash -lc 'scp gex44:/root/fal-author/k2-tank-v1/states.png /tmp/k2-states-first.png; scp gex44:/root/fal-author/k2-tank-v1/paints.png /tmp/k2-paints-first.png' in /home/claude-agent/forge-build/forge-assets/jobs/k2-tank-v1
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/bin/bash -lc "python3 - <<'PY'
from pathlib import Path
p=Path('build_k2-tank.py');s=p.read_text()
s=s.replace(\"(s*1.12,-3.32,1.20)\",\"(s*1.12,-3.59,1.20)\").replace(\"(x,-3.395,1.21)\",\"(x,-3.67,1.21)\").replace(\"-3.41,1.\",\"-3.69,1.\").replace(\"(s*1.12,-3.36,1.23)\",\"(s*1.12,-3.62,1.23)\").replace(\"-3.42,1.21\",\"-3.69,1.21\")
needle=\" # optical panoramic towers with armoured hood, independent glass panes\"
extra=''' # Roof architecture: autoloader access covers, seam trims and cupola periscopes.
 for i,(x,y,w,h) in enumerate([(-.70,1.28,.83,.83),(.64,1.27,.84,.85),(0,-.61,.54,.66)]):
  g=Geo();g.box((x,y,2.14),(w,h,.045),'Paint')
  bolts(g,[(x+dx,y+dy,2.168) for dx in [-w/2+.055,w/2-.055] for dy in [-h/2+.055,0,h/2-.055]],r=.014)
  g.line([(x-.095,y+.12,2.172),(x-.095,y+.12,2.22),(x+.095,y+.12,2.22),(x+.095,y+.12,2.172)],.011,'Metal')
  g.object('Part_Turret_RoofPanel'+str(i+1),(x,y,2.16),turret,.006)
 g=Geo();g.ring((-.60,.32,2.145),.29,.38,.055,'Paint',n=32)
 for a in np.arange(0,math.tau,math.tau/7):
  x=-.60+.344*math.cos(a);y=.32+.344*math.sin(a)
  g.box((x,y,2.17),(.11,.067,.055),'Rubber',Matrix.Rotation(a,3,'Z'));g.box((x,y,2.2),(.079,.050,.009),'Glass',Matrix.Rotation(a,3,'Z'))
 g.object('Part_Turret_CupolaRing',(-.60,.32,2.16),turret,.003)
 # welded hull access strip and small deck recesses, retained when equipment is stripped
 g=Geo()
 for x in [-.79,-.15]:
  g.box((x,-2.14,1.49),(.47,.82,.018),'Paint')
  bolts(g,[(x+dx,yy,1.505) for dx in [-.19,.19] for yy in [-2.49,-1.79]],r=.012)
 for s in [-1,1]:
  g.line([(s*1.35,-2.66,1.495),(s*1.35,3.48,1.495)],.008,'Metal')
  for yy in [-2.6,-1.4,0,1.4,2.6]:
   g.box((s*1.56,yy,1.47),(.10,.18,.035));bolts(g,[(s*1.56,yy,1.492)],r=.013)
 detailing=g.object('_HullFixedDetail',bev=.003,collection=[]);join_into(hull,[detailing])
'''
s=s.replace(needle,extra+needle)
# stronger hit panel bends below the mounting edge
s=s.replace(\".10*math.sin(v.co.y*5)+.10\", \".24*math.sin(v.co.y*5)+.22\").replace(\"f*.09*(.6\", \"f*.18*(.6\")
# preserve true ground touch: current belt pad drops to -0.003; shift all track path Z 0.003
s=s.replace(\"c=Vector((s*1.45,y,z))\", \"c=Vector((s*1.45,y,z+.003))\")
# burnt material procedural broad soot islands instead of a monochrome source scan
s=s.replace(\" if name=='Paint':\\n  mapping\", \" if name in ['Paint','Burnt']:\\n  mapping\")
s=s.replace(\"mm.inputs[0].default_value=.39\", \"mm.inputs[0].default_value=.39 if name=='Paint' else .85\")
# correct sixth frame to show detached turret entirely, same view all six
s=s.replace(\"names['Wreck_Turret'].location=(3.35,.55,.78)\",\"names['Wreck_Turret'].location=(2.8,.75,.78)\")
p.write_text(s)
PY
python3 -m py_compile build_k2-tank.py
ssh gex44 'tail -4 /root/fal-author/k2-tank-v1/build.log'" in /home/claude-agent/forge-build/forge-assets/jobs/k2-tank-v1
 succeeded in 676ms:
RENDER pivots.png
PROOF_COMPLETE

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/bin/bash -lc "scp build_k2-tank.py gex44:/root/fal-author/k2-tank-v1/; ssh gex44 '/root/blender-spike/blender-5.2.0-linux-x64/blender -b --python-exit-code 1 --python /root/fal-author/k2-tank-v1/build_k2-tank.py > /root/fal-author/k2-tank-v1/build.log 2>&1'" in /home/claude-agent/forge-build/forge-assets/jobs/k2-tank-v1
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/bin/bash -lc 'scp gex44:/root/fal-author/k2-tank-v1/textures/rusty_metal_diff_1k.jpg /tmp/k2-rust.jpg; scp gex44:/root/fal-author/k2-tank-v1/textures/metal_plate_diff_1k.jpg /tmp/k2-metal.jpg' in /home/claude-agent/forge-build/forge-assets/jobs/k2-tank-v1
 succeeded in 2277ms:
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/bin/bash -lc "python3 - <<'PY'
import urllib.request,concurrent.futures
ids=['rusty_metal_02','rusty_metal_03','rusty_metal_04','rusty_metal_05','metal_plate_02','blue_metal_plate','green_metal_rust','rust_coarse_01']
def f(i):
 try:
  u=f'https://dl.polyhaven.org/file/ph-assets/Textures/jpg/1k/{i}/{i}_diff_1k.jpg';r=urllib.request.urlopen(urllib.request.Request(u,headers={'User-Agent':'Mozilla/5.0'}));open('/tmp/k2-'+i+'.jpg','wb').write(r.read());return i
 except Exception as e:return (i,str(e))
with concurrent.futures.ThreadPoolExecutor(max_workers=8) as ex:print(list(ex.map(f,ids)))
from PIL import Image,ImageDraw
im=Image.new('RGB',(1024,512));d=ImageDraw.Draw(im)
for j,i in enumerate(ids):
 p=Image.open('/tmp/k2-'+i+'.jpg').resize((256,256));im.paste(p,((j%4)*256,(j//4)*256));d.text(((j%4)*256+5,(j//4)*256+5),i,fill='white',stroke_width=2,stroke_fill='black')
im.save('/tmp/k2-texture-choices.jpg')
PY" in /home/claude-agent/forge-build/forge-assets/jobs/k2-tank-v1
 succeeded in 512ms:
['rusty_metal_02', 'rusty_metal_03', 'rusty_metal_04', 'rusty_metal_05', 'metal_plate_02', 'blue_metal_plate', 'green_metal_rust', 'rust_coarse_01']

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/bin/bash -lc "python3 - <<'PY'
from pathlib import Path
p=Path('build_k2-tank.py');s=p.read_text()
s=s.replace(\"'Paint','metal_plate'\",\"'Paint','rusty_metal_02'\").replace(\"'TrackSteel','rusty_metal'\",\"'TrackSteel','rust_coarse_01'\").replace(\"'Metal','metal_plate'\",\"'Metal','rust_coarse_01'\").replace(\"'Burnt','rusty_metal',(.075,.066,.056)\",\"'Burnt','rusty_metal_04',(.15,.125,.10)\").replace(\"'Scars','rusty_metal'\",\"'Scars','rust_coarse_01'\")
s=s.replace(\".24 if name=='Paint' else .5\", \".13 if name=='Paint' else (0 if name in ['Glass','Lamps','Interior'] else .3)\")
s=s.replace(\"Poly Haven CC0 ids: metal_plate, rubberized_track, rusty_metal;\", \"Poly Haven CC0 ids: rusty_metal_02, rust_coarse_01, rusty_metal_04, metal_plate, rubberized_track;\")
s=s.replace(\"CC0 source: https://polyhaven.com/a/metal_plate, /a/rubberized_track, /a/rusty_metal\", \"CC0: Poly Haven rusty_metal_02, rust_coarse_01, rusty_metal_04, metal_plate, rubberized_track\")
p.write_text(s)
PY
ssh gex44 'tail -8 /root/fal-author/k2-tank-v1/build.log'" in /home/claude-agent/forge-build/forge-assets/jobs/k2-tank-v1
 succeeded in 600ms:
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
BAKED Lamps
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
BAKED Interior

codex
The exported files already reproduce the six visibility states and paint variants. I also found a material problem: two scans contain stamped-metal patterns that don’t belong on armour plate. I’m replacing those with plain weathered metal scans before the next bake.

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/bin/bash -lc "python3 - <<'PY'
from pathlib import Path
p=Path('build_k2-tank.py');s=p.read_text()
s=s.replace(\"  for j,(y,z,r,kind) in enumerate(entries):\", \"  entries.sort(key=lambda q:q[0])\\n  for j,(y,z,r,kind) in enumerate(entries):\")
s=s.replace(\"   for p in wh.data.polygons:\", \"   wh['wheel_role']=kind;wh['side']=label\\n   for p in wh.data.polygons:\")
# baked neutral chips / lighter border trim on box-projected armour surfaces; use texture UVs rather than procedural render-only effects
# Smooth only cylindrical side walls (caps remain flat). Record original polygon smooth flags.
s=s.replace(\"self.mi=[]\", \"self.mi=[];self.sm=[]\")
s=s.replace(\"def add(self,v,f,mat='Paint'):\",\"def add(self,v,f,mat='Paint',smooth=False):\")
s=s.replace(\"self.mi.extend([mat]*len(f))\", \"self.mi.extend([mat]*len(f));self.sm.extend([smooth]*len(f))\")
s=s.replace(\"for i in range(n)],mat)\\n def line\", \"for i in range(n)],mat)\\n  self.sm[-n:]=[True]*n\\n def line\")
s=s.replace(\"for j in range(4) for i in range(n)],mat)\",\"for j in range(4) for i in range(n)],mat)\\n  self.sm[-4*n:-3*n]=[True]*n;self.sm[-2*n:-n]=[True]*n\")
s=s.replace(\"for poly,m in zip(mesh.polygons,self.mi):poly.material_index=used.index(m)\",\"for poly,m,sm in zip(mesh.polygons,self.mi,self.sm):poly.material_index=used.index(m);poly.use_smooth=sm\")
s=s.replace(\"   if len(p.vertices)==4 and p.area<.04:p.use_smooth=False\", \"   # Keep cylindrical walls smooth; armour faces retain their hard planes.\")
p.write_text(s)
PY
ssh gex44 'tail -14 /root/fal-author/k2-tank-v1/build.log'; date -u '+%FT%TZ'" in /home/claude-agent/forge-build/forge-assets/jobs/k2-tank-v1
 succeeded in 590ms:
18:38:07 | INFO: Primitives created: 3
18:38:07 | INFO: Finished glTF 2.0 export in 0.6122748851776123 s

EXPORTED k2-tank.glb 11613328
/root/fal-author/k2-tank-v1/build_k2-tank.py:481: DeprecationWarning: 'Material.use_nodes' is expected to be removed in Blender 6.0
  mat=bpy.data.materials.new('Studio');mat.diffuse_color=(.28,.30,.32,1);mat.use_nodes=True;mat.node_tree.nodes.get('Principled BSDF').inputs['Base Color'].default_value=(.28,.30,.32,1);mat.node_tree.nodes.get('Principled BSDF').inputs['Roughness'].default_value=.86
/root/fal-author/k2-tank-v1/build_k2-tank.py:483: DeprecationWarning: 'World.use_nodes' is expected to be removed in Blender 6.0
  sc.world.use_nodes=True;sc.world.node_tree.nodes.get('Background').inputs[0].default_value=(.55,.63,.74,1);sc.world.node_tree.nodes.get('Background').inputs[1].default_value=.55
00:35.800  render           | Saved: '/root/fal-author/k2-tank-v1/final.png'
RENDER final.png
00:45.853  render           | Saved: '/root/fal-author/k2-tank-v1/side.png'
RENDER side.png
/root/fal-author/k2-tank-v1/build_k2-tank.py:582: DeprecationWarning: 'Material.use_nodes' is expected to be removed in Blender 6.0
  clay=bpy.data.materials.new('_Clay');clay.diffuse_color=(.35,.35,.35,1);clay.use_nodes=True;clay.node_tree.nodes.get('Principled BSDF').inputs['Base Color'].default_value=(.35,.35,.35,1)
2026-10-11T16:38:37Z

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/bin/bash -lc 'scp gex44:/root/fal-author/k2-tank-v1/final.png /tmp/k2-second.png; scp gex44:/root/fal-author/k2-tank-v1/side.png /tmp/k2-side-second.png' in /home/claude-agent/forge-build/forge-assets/jobs/k2-tank-v1
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/bin/bash -lc "python3 - <<'PY'
from pathlib import Path
p=Path('build_k2-tank.py');s=p.read_text().replace(\"camera((12,0,3.2),(0,-1.05,1.12),12.1)\",\"camera((12,-1.63,1.20),(0,-1.63,1.20),12.1)\")
s=s.replace(\"g.ring((x,y,z),r*.62,r*.90,.033\", \"g.ring((x,y,z),r*.76,r*.92,.040\")
s=s.replace(\"g.cyl((x+side*.012,y,z),r*.69,.032\", \"g.cyl((x-side*.035,y,z),r*.77,.022\")
s=s.replace(\"    g.ring((x+side*.03,y,z),r*.20\", \"    g.ring((x-side*.012,y,z),r*.62,r*.76,.035,'Paint',(1,0,0),48)\\n    g.ring((x+side*.03,y,z),r*.20\")
# visible perforated sprocket via genuine spokes and empty spaces
s=s.replace(\"   if kind=='sprocket':\\n    for a\", \"\"\"   if kind=='sprocket':
    g=Geo();g.cyl(c,.14,.46,'Metal',(1,0,0),32)
    for xx in [s*1.45-.19,s*1.45+.19]:
     g.ring((xx,y,z),.30,.405,.055,'TrackSteel',(1,0,0),48)
     g.cyl((xx,y,z),.17,.07,'Paint',(1,0,0),32)
     for aa in np.arange(0,math.tau,math.tau/8):
      g.line([(xx,y+.15*math.cos(aa),z+.15*math.sin(aa)),(xx,y+.34*math.cos(aa),z+.34*math.sin(aa))],.043,'Paint',8)
      bolts(g,[(xx+s*.04,y+.11*math.cos(aa),z+.11*math.sin(aa))],(1,0,0),r=.014)
    for a\"\"\")
p.write_text(s)
PY
ssh gex44 'tail -4 /root/fal-author/k2-tank-v1/build.log'" in /home/claude-agent/forge-build/forge-assets/jobs/k2-tank-v1
 succeeded in 539ms:

Error: script failed, file: '/root/fal-author/k2-tank-v1/build_k2-tank.py', exiting.

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/bin/bash -lc "ssh gex44 'tail -30 /root/fal-author/k2-tank-v1/build.log'" in /home/claude-agent/forge-build/forge-assets/jobs/k2-tank-v1
 succeeded in 505ms:
18:38:07 | INFO: Extracting primitive: Wheel_R9
18:38:07 | INFO: Primitives created: 3
18:38:07 | INFO: Extracting primitive: Wheel_R10
18:38:07 | INFO: Primitives created: 3
18:38:07 | INFO: Extracting primitive: Wheel_R11
18:38:07 | INFO: Primitives created: 3
18:38:07 | INFO: Finished glTF 2.0 export in 0.6122748851776123 s

EXPORTED k2-tank.glb 11613328
/root/fal-author/k2-tank-v1/build_k2-tank.py:481: DeprecationWarning: 'Material.use_nodes' is expected to be removed in Blender 6.0
  mat=bpy.data.materials.new('Studio');mat.diffuse_color=(.28,.30,.32,1);mat.use_nodes=True;mat.node_tree.nodes.get('Principled BSDF').inputs['Base Color'].default_value=(.28,.30,.32,1);mat.node_tree.nodes.get('Principled BSDF').inputs['Roughness'].default_value=.86
/root/fal-author/k2-tank-v1/build_k2-tank.py:483: DeprecationWarning: 'World.use_nodes' is expected to be removed in Blender 6.0
  sc.world.use_nodes=True;sc.world.node_tree.nodes.get('Background').inputs[0].default_value=(.55,.63,.74,1);sc.world.node_tree.nodes.get('Background').inputs[1].default_value=.55
00:35.800  render           | Saved: '/root/fal-author/k2-tank-v1/final.png'
RENDER final.png
00:45.853  render           | Saved: '/root/fal-author/k2-tank-v1/side.png'
RENDER side.png
/root/fal-author/k2-tank-v1/build_k2-tank.py:582: DeprecationWarning: 'Material.use_nodes' is expected to be removed in Blender 6.0
  clay=bpy.data.materials.new('_Clay');clay.diffuse_color=(.35,.35,.35,1);clay.use_nodes=True;clay.node_tree.nodes.get('Principled BSDF').inputs['Base Color'].default_value=(.35,.35,.35,1)
00:54.438  render           | Saved: '/root/fal-author/k2-tank-v1/clay.png'
RENDER clay.png
Traceback (most recent call last):
  File "/root/fal-author/k2-tank-v1/build_k2-tank.py", line 589, in <module>
    if slot.material.name in ['Metal','Glass','Lamps']:slot.material=M['Scars']
       ^^^^^^^^^^^^^^^^^^
AttributeError: 'NoneType' object has no attribute 'name'

Error: script failed, file: '/root/fal-author/k2-tank-v1/build_k2-tank.py', exiting.

Blender quit

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/bin/bash -lc "python3 - <<'PY'
from pathlib import Path
p=Path('build_k2-tank.py');s=p.read_text().replace(\"    if slot.material.name in ['Metal','Glass','Lamps']\", \"    if slot.material is None:slot.material=M['Burnt']\\n    if slot.material.name in ['Metal','Glass','Lamps']\")
s=s.replace(\"   bpy.context.view_layer.objects.active=o\\n   mod=o.modifiers.new('Game\", \"   for slot in o.material_slots:\\n    if slot.material is None:slot.material=M['Paint']\\n   bpy.context.view_layer.objects.active=o\\n   mod=o.modifiers.new('Game\")
p.write_text(s)
PY
python3 -m py_compile build_k2-tank.py
scp build_k2-tank.py gex44:/root/fal-author/k2-tank-v1/
ssh gex44 '/root/blender-spike/blender-5.2.0-linux-x64/blender -b --python-exit-code 1 --python /root/fal-author/k2-tank-v1/build_k2-tank.py > /root/fal-author/k2-tank-v1/build.log 2>&1'" in /home/claude-agent/forge-build/forge-assets/jobs/k2-tank-v1
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/bin/bash -lc 'scp gex44:/root/fal-author/k2-tank-v1/k2-tank.glb /tmp/k2-check.glb; python3 /home/claude-agent/.agents/skills/blender-game-assets/scripts/audit_glb.py /tmp/k2-check.glb --strict > /tmp/k2-audit.json; head -60 /tmp/k2-audit.json' in /home/claude-agent/forge-build/forge-assets/jobs/k2-tank-v1
 succeeded in 1811ms:
{
  "file": "k2-check.glb",
  "sha256": "b5d51be733109f2d867e2f83d63a962238eaff4edb9481c644de0331603ce825",
  "bytes": 11613328,
  "primitive_count": 192,
  "material_count": 7,
  "embedded_images": 21,
  "external_uris": [],
  "primitives": [
    {
      "mesh": "Hatch_Driver",
      "primitive": 0,
      "triangles": 180,
      "zero_area_triangles": 0,
      "nonfinite_attribute_components": 0
    },
    {
      "mesh": "Hatch_Driver",
      "primitive": 1,
      "triangles": 206,
      "zero_area_triangles": 0,
      "nonfinite_attribute_components": 0
    },
    {
      "mesh": "Hull",
      "primitive": 0,
      "triangles": 1160,
      "zero_area_triangles": 0,
      "nonfinite_attribute_components": 0
    },
    {
      "mesh": "Hull",
      "primitive": 1,
      "triangles": 4604,
      "zero_area_triangles": 0,
      "nonfinite_attribute_components": 0
    },
    {
      "mesh": "Hull",
      "primitive": 2,
      "triangles": 352,
      "zero_area_triangles": 0,
      "nonfinite_attribute_components": 0
    },
    {
      "mesh": "Part_EngineGrille_L",
      "primitive": 0,
      "triangles": 20,
      "zero_area_triangles": 0,
      "nonfinite_attribute_components": 0
    },
    {
      "mesh": "Part_EngineGrille_L",
      "primitive": 1,
      "triangles": 800,
      "zero_area_triangles": 0,
      "nonfinite_attribute_components": 0
    },
    {
      "mesh": "Part_EngineGrille_L",

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/bin/bash -lc "python3 - <<'PY'
import json
x=json.load(open('/tmp/k2-audit.json'));print({k:v for k,v in x.items() if k"'!='"'primitives'})
PY
ssh gex44 'tail -5 /root/fal-author/k2-tank-v1/build.log'" in /home/claude-agent/forge-build/forge-assets/jobs/k2-tank-v1
 succeeded in 610ms:
{'file': 'k2-check.glb', 'sha256': 'b5d51be733109f2d867e2f83d63a962238eaff4edb9481c644de0331603ce825', 'bytes': 11613328, 'primitive_count': 192, 'material_count': 7, 'embedded_images': 21, 'external_uris': [], 'duplicate_primitives': [{'primitive': 'Part_Fender_FR[0]', 'same_as': 'Part_Fender_FL[0]'}, {'primitive': 'Part_Fender_RR[0]', 'same_as': 'Part_Fender_RL[0]'}, {'primitive': 'Part_Skirt_L6[1]', 'same_as': 'Part_Skirt_L2[1]'}, {'primitive': 'Part_Skirt_L7[0]', 'same_as': 'Part_Skirt_L1[0]'}, {'primitive': 'Part_Skirt_L7[1]', 'same_as': 'Part_Skirt_L1[1]'}, {'primitive': 'Part_Skirt_R6[1]', 'same_as': 'Part_Skirt_R2[1]'}, {'primitive': 'Part_Skirt_R7[0]', 'same_as': 'Part_Skirt_R1[0]'}, {'primitive': 'Part_Skirt_R7[1]', 'same_as': 'Part_Skirt_R1[1]'}, {'primitive': 'Part_TailLamp_R[0]', 'same_as': 'Part_TailLamp_L[0]'}, {'primitive': 'Part_TailLamp_R[1]', 'same_as': 'Part_TailLamp_L[1]'}, {'primitive': 'Part_ToolBox_R[0]', 'same_as': 'Part_ToolBox_L[0]'}, {'primitive': 'Part_ToolBox_R[1]', 'same_as': 'Part_ToolBox_L[1]'}, {'primitive': 'Part_TowCable_R[0]', 'same_as': 'Part_TowCable_L[0]'}, {'primitive': 'Part_TowCable_R[1]', 'same_as': 'Part_TowCable_L[1]'}, {'primitive': 'Track_R[0]', 'same_as': 'Track_L[0]'}, {'primitive': 'Track_R[1]', 'same_as': 'Track_L[1]'}, {'primitive': 'Part_Turret_Antenna_R[1]', 'same_as': 'Part_Turret_Antenna_L[1]'}, {'primitive': 'Part_Turret_Smoke_R[0]', 'same_as': 'Part_Turret_Smoke_L[0]'}, {'primitive': 'Wheel_R1[0]', 'same_as': 'Wheel_L1[0]'}, {'primitive': 'Wheel_R2[0]', 'same_as': 'Wheel_L2[0]'}, {'primitive': 'Wheel_R3[0]', 'same_as': 'Wheel_L3[0]'}, {'primitive': 'Wheel_R4[0]', 'same_as': 'Wheel_L4[0]'}, {'primitive': 'Wheel_R5[0]', 'same_as': 'Wheel_L5[0]'}, {'primitive': 'Wheel_R6[0]', 'same_as': 'Wheel_L6[0]'}, {'primitive': 'Wheel_R7[0]', 'same_as': 'Wheel_L7[0]'}, {'primitive': 'Wheel_R9[0]', 'same_as': 'Wheel_L9[0]'}], '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': 124035, 'zero_area_triangles': 372, 'nonfinite_attribute_components': 0, 'findings': ['zero_area_triangles', 'duplicate_primitives']}

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/bin/bash -lc "python3 - <<'PY'
from pathlib import Path
p=Path('build_k2-tank.py');s=p.read_text()
s=s.replace(\" print('BUDGET',total,'->',metrics(objects)['triangles'],flush=True)\",\"\"\" for o in objects:
  if o.type"'!='"'MESH':continue
  bm=bmesh.new();bm.from_mesh(o.data);bmesh.ops.triangulate(bm,faces=list(bm.faces))
  bad=[f for f in bm.faces if f.calc_area()<1e-10]
  if bad:bmesh.ops.delete(bm,geom=bad,context='FACES')
  bm.to_mesh(o.data);bm.free();o.data.update()
 print('BUDGET',total,'->',metrics(objects)['triangles'],flush=True)\"\"\")
p.write_text(s)
PY
ssh gex44 'tail -7 /root/fal-author/k2-tank-v1/build.log'" in /home/claude-agent/forge-build/forge-assets/jobs/k2-tank-v1
 succeeded in 586ms:
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/bin/bash -lc "python3 - <<'PY'
from pathlib import Path
p=Path('build_k2-tank.py');s=p.read_text()
s=s.replace('(0,3.76,z)','(0,3.73,z)').replace('(s*.94,3.72,.66)','(s*.94,3.705,.66)')
s=s.replace('(s*1.30,3.78,1.13)','(s*1.30,3.70,1.13)').replace('(s*1.3,3.823,1.14)','(s*1.3,3.740,1.14)').replace('(s*1.3,3.77,1.13)','(s*1.3,3.70,1.13)')
s=s.replace('(0,3.70,1.36)','(0,3.67,1.36)').replace('(0,3.7,1.36)','(0,3.67,1.36)')
s=s.replace('(x,y,2.29),(.28,.25,.25)','(x,y,2.26),(.28,.25,.22)').replace('(x,y-.132,2.29)','(x,y-.132,2.26)').replace('(x,y,2.427)','(x,y,2.385)')
s=s.replace('(s*1.04,1.52,2.33),.012,.30','(s*1.04,1.52,2.29),.012,.22')
start=s.index(' # roof machine gun,');end=s.index(' # tied down tow cables',start)
block=s[start:end]
for a,b in [('2.37','2.33'),('2.38','2.34'),('2.33','2.29'),('2.35','2.31')]:block=block.replace(a,b)
s=s[:start]+block+s[end:]
s=s.replace(\" if not broken:\\n  # V is arc\", \" minz=min(v.co.z+o.location.z for v in o.data.vertices)\\n for v in o.data.vertices:v.co.z-=minz\\n if not broken:\\n  # V is arc\")
p.write_text(s)
PY
python3 -m py_compile build_k2-tank.py
ssh gex44 'tail -8 /root/fal-author/k2-tank-v1/build.log'" in /home/claude-agent/forge-build/forge-assets/jobs/k2-tank-v1
 succeeded in 609ms:
codex
The reduced healthy mesh is about 124,000 triangles and under 12 MB. I’m now checking the ground contact, exact dimensions, hatch wells, and pivots, while making the hit and wreck states more distinct.

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/bin/bash -lc "python3 - <<'PY'
from pathlib import Path
p=Path('build_k2-tank.py');s=p.read_text()
s=s.replace(\"   twins[o.name]=n.name\", \"   twins[o.name]=n.name\")
s=s.replace(\"  twins[o.name]=n.name\", \"\"\"  burnindex=len(n.data.materials);n.data.materials.append(M['Burnt'])
  for poly in n.data.polygons:
   if (poly.center.y-.1)**2+(poly.center.z+.08)**2<.22**2:poly.material_index=burnindex
  twins[o.name]=n.name\"\"\")
s=s.replace(\"[(x,-3.565,1.185)\",\"[(x,-3.47805,1.23)\")
s=s.replace(\"[(1.445,y,1.18)\",\"[(1.457,y,1.18)\").replace(\"[(-1.445,y,1.18)\",\"[(-1.457,y,1.18)\")
s=s.replace(\"[(1.456,y,1.74)\",\"[(1.479,y,1.74)\").replace(\"[(-1.456,y,1.74)\",\"[(-1.479,y,1.74)\")
s=s.replace(\"[(x,-1.90,1.70)\",\"[(x,-1.833,1.74)\")
s=s.replace(\"normal=Vector({'Front':(0,-1,0),'Rear'\", \"normal=Vector({'Front':(0,-.691,.723) if is_turret else (0,-.375,.927),'Rear'\")
s=s.replace(\";v=Vector((0,0,1))\\n   for k\", \";v=normal.cross(u).normalized()\\n   for k\")
s=s.replace(\"    g.loft(rings,'Scars')\", \"    g.add(sum(rings,[]),[(j*28+i,j*28+(i+1)%28,(j+1)*28+(i+1)%28,(j+1)*28+i) for j in range(2) for i in range(28)],'Scars')\")
s=s.replace(\"[(r*1.15,.001),(r*.77,.019),(r*.62,.006)]\", \"[(r*1.15,.0002),(r*.77,.003),(r*.62,.001)]\")
s=s.replace(\"c=Vector(p)+normal*.003;r=.055 if k<3 else .085\", \"c=Vector(p)+normal*.001;r=.065 if k<3 else .10\")
p.write_text(s)
PY
ssh gex44 'tail -8 /root/fal-author/k2-tank-v1/build.log'; date -u '+%FT%TZ'" in /home/claude-agent/forge-build/forge-assets/jobs/k2-tank-v1
 succeeded in 624ms:
2026-10-11T16:42:03Z

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/bin/bash -lc "ssh gex44 'ps -eo pid,etimes,args | grep \"[k]2-tank-v1\" | head -8; nvidia-smi --query-gpu=memory.used,utilization.gpu --format=csv,noheader'; python3 -m py_compile build_k2-tank.py" in /home/claude-agent/forge-build/forge-assets/jobs/k2-tank-v1
 succeeded in 652ms:
1421109     154 bash -c /root/blender-spike/blender-5.2.0-linux-x64/blender -b --python-exit-code 1 --python /root/fal-author/k2-tank-v1/build_k2-tank.py > /root/fal-author/k2-tank-v1/build.log 2>&1
1421110     154 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/k2-tank-v1/build_k2-tank.py
7485 MiB, 99 %

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/bin/bash -lc "python3 - <<'PY'
from pathlib import Path
p=Path('build_k2-tank.py');s=p.read_text()
s=s.replace(\"  n=duplicate(o,'_wreck_'+o.name,None,col=[])\",\"  source=next(d for d in damage if d.name=='Track_L_Broken') if o.name=='Track_L' else o\\n  n=duplicate(source,'_wreck_'+o.name,None,col=[])\")
s=s.replace(\"  if o.name.startswith('Wheel_'):n.location.z-=.05\", \"\"\"  if o.name.startswith('Wheel_'):
   n.location.z-=.05
   if o.get('wheel_role')=='road':
    for v in n.data.vertices:
     rr=math.hypot(v.co.y,v.co.z)
     if rr>.407:v.co.y*=.395/rr;v.co.z*=.395/rr\"\"\")
s=s.replace(\"  (wt_pieces if is_t else wh_pieces).append(n)\", \"\"\"   bpy.ops.mesh.primitive_cube_add(size=1,location=(0,2.92,1.4));cut=bpy.context.object;cut.scale=(1.55,.82,.7)
   bpy.context.view_layer.objects.active=n;mod=n.modifiers.new('Ruptured engine bay','BOOLEAN');mod.operation='DIFFERENCE';mod.object=cut;bpy.ops.object.modifier_apply(modifier=mod.name);bpy.data.objects.remove(cut,do_unlink=True)
  (wt_pieces if is_t else wh_pieces).append(n)\"\"\")
s=s.replace(\"g=Geo();g.cyl((0,-.3,.56)\",\"g=Geo();g.box((0,2.92,.93),(1.56,.85,.35),'Burnt');g.cyl((0,-.3,.56)\")
p.write_text(s)
PY
python3 -m py_compile build_k2-tank.py
scp build_k2-tank.py gex44:/root/fal-author/k2-tank-v1/
ssh gex44 'tail -3 /root/fal-author/k2-tank-v1/build.log'" in /home/claude-agent/forge-build/forge-assets/jobs/k2-tank-v1
 succeeded in 1603ms:
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/bin/bash -lc "python3 - <<'PY'
from pathlib import Path
p=Path('build_k2-tank.py');s=p.read_text().replace(\"('normal',res)\",\"('normal',min(res,512))\")
s=s.replace(\"im.filepath_raw=str(CACHE/(name+'_'+kind+'.png'));im.file_format='PNG';im.save();images[kind]=im\", \"im.filepath_raw=str(CACHE/(name+'_'+kind+('.jpg' if kind=='base' else '.png')));im.file_format='JPEG' if kind=='base' else 'PNG';im.save();images[kind]=im\")
s=s.replace(\"g.box((-.52,.43,2.29)\",\"g.box((-.52,.43,2.33)\")
p.write_text(s)
PY
scp build_k2-tank.py gex44:/root/fal-author/k2-tank-v1/
ssh gex44 'tail -3 /root/fal-author/k2-tank-v1/build.log'" in /home/claude-agent/forge-build/forge-assets/jobs/k2-tank-v1
 succeeded in 1551ms:
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/bin/bash -lc "cat > /tmp/k2-validate.py <<'PY'
import json,struct,sys,io
from pathlib import Path
import numpy as np
from PIL import Image

def read(p):
 b=Path(p).read_bytes();n=struct.unpack_from('<I',b,12)[0];d=json.loads(b[20:20+n]);return d,b[28+n:]
def acc(d,b,i):
 a=d['accessors'][i];v=d['bufferViews'][a['bufferView']];dt={5126:'<f4',5125:'<u4',5123:'<u2',5121:'u1'}[a['componentType']];n={'SCALAR':1,'VEC2':2,'VEC3':3,'VEC4':4}[a['type']];start=v.get('byteOffset',0)+a.get('byteOffset',0)
 return np.ndarray((a['count'],n),dtype=dt,buffer=b,offset=start,strides=(v.get('byteStride',np.dtype(dt).itemsize*n),np.dtype(dt).itemsize)).copy()
def matrix(n):
 if 'matrix' in n:return np.array(n['matrix']).reshape(4,4).T
 x,y,z,w=n.get('rotation',[0,0,0,1]);r=np.array([[1-2*y*y-2*z*z,2*x*y-2*z*w,2*x*z+2*y*w],[2*x*y+2*z*w,1-2*x*x-2*z*z,2*y*z-2*x*w],[2*x*z-2*y*w,2*y*z+2*x*w,1-2*x*x-2*y*y]])
 m=np.eye(4);m[:3,:3]=r@np.diag(n.get('scale',[1,1,1]));m[:3,3]=n.get('translation',[0,0,0]);return m

def run(path):
 d,b=read(path);ns=d['nodes'];parents={c:i for i,n in enumerate(ns) for c in n.get('children',[])};world={}
 def wm(i):
  if i not in world:world[i]=(wm(parents[i]) if i in parents else np.eye(4))@matrix(ns[i])
  return world[i]
 lo=np.array([np.inf]*3);hi=-lo;tri=0;bad=0;nonfinite=0
 for i,n in enumerate(ns):
  if 'mesh' not in n:continue
  for p in d['meshes'][n['mesh']]['primitives']:
   verts=acc(d,b,p['attributes']['POSITION']);vv=np.c_[verts,np.ones(len(verts))]@wm(i).T;lo=np.minimum(lo,vv[:,:3].min(0));hi=np.maximum(hi,vv[:,:3].max(0))
   ids=acc(d,b,p['indices']).ravel().reshape(-1,3);tri+=len(ids);area=np.linalg.norm(np.cross(verts[ids[:,1]]-verts[ids[:,0]],verts[ids[:,2]]-verts[ids[:,0]]),axis=1);bad+=int((area<1e-12).sum());nonfinite+=int((~np.isfinite(verts)).sum())
 ims=[]
 for im in d.get('images',[]):
  v=d['bufferViews'][im['bufferView']];a=Image.open(io.BytesIO(b[v.get('byteOffset',0):v.get('byteOffset',0)+v['byteLength']]))
  ims.append((im.get('name'),a.size));assert max(a.size)<=1024
  if 'orm' in im.get('name','').lower():assert max(a.size)<=512
 assert bad==0,('degenerate',bad)
 assert nonfinite==0
 names={n['name']:i for i,n in enumerate(ns)}
 paints=[m for m in d['materials'] if m['name']=='Paint'];assert len(paints)==1
 assert paints[0]['pbrMetallicRoughness']['baseColorFactor']==[.1,.13,.08,1]
 assert 'baseColorTexture' in paints[0]['pbrMetallicRoughness']
 assert not d.get('cameras') and not any('KHR_lights_punctual' in n.get('extensions',{}) for n in ns)
 roots=[ns[i]['name'] for i in d['scenes'][d.get('scene',0)]['nodes']]
 print(Path(path).name,json.dumps({'bytes':Path(path).stat().st_size,'triangles':tri,'degenerate':bad,'nodes':len(ns),'bounds_min':lo.tolist(),'bounds_max':hi.tolist(),'dimensions':(hi-lo).tolist(),'materials':[m['name'] for m in d['materials']],'images':ims,'roots':roots},indent=2))
 return d,names,world,roots,tri,hi-lo,lo
A,an,aw,ar,at,dim,lo=run(sys.argv[1]);B,bn,bw,br,bt,_,_=run(sys.argv[2])
assert 80000<=at<=140000 and bt<=110000
assert Path(sys.argv[1]).stat().st_size<=12000000
assert np.allclose(dim,[3.6,2.4,10.8],atol=.015),(dim)
assert abs(lo[1])<.0001
assert set(br)=={'Hull_Damage','Turret_Damage','Wreck_Hull','Wreck_Turret'}
for name in ['Hull','Turret','Gun','Barrel','Muzzle','MG','Track_L','Track_R','Hatch_Commander','Hatch_Driver','Hatch_Loader','Seat_Commander','Seat_Driver','Exhaust','Light_Head_L','Light_Head_R','Fx_Engine','Fx_Ammo','Fx_Hatch']:assert name in an,name
assert sum(n.startswith('Part_') for n in an)>=14
for n,i in bn.items():
 if n.startswith('Dmg_'):
  h='Part_'+n[4:];assert h in an;assert np.allclose(bw.get(i,np.eye(4))[:3,3],aw[an[h]][:3,3],atol=.0001),(n,'pivot mismatch')
assert len([n for n in bn if n.startswith('Scar_')])==8
print('CONTRACT PASS')
PY" in /home/claude-agent/forge-build/forge-assets/jobs/k2-tank-v1
 succeeded in 0ms:
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/bin/bash -lc "ssh gex44 'tail -10 /root/fal-author/k2-tank-v1/build.log'; date -u '+%FT%TZ'; df -h /" in /home/claude-agent/forge-build/forge-assets/jobs/k2-tank-v1
 succeeded in 547ms:
2026-10-11T16:44:59Z
Filesystem      Size  Used Avail Use% Mounted on
/dev/sda1       150G  133G   12G  93% /

codex
The next bake is waiting for the shared GPU slot. The latest script adds dished road wheels, an open-spoke sprocket, stronger damaged-panel bends, and a ruptured engine bay. It also removes tiny degenerate triangles found in the export audit.

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/bin/bash -lc "ssh gex44 'python3 /opt/gpu-gate/gpu_gate.py --help | head -35; ps -eo pid,etimes,args | grep \"[b]lender.real\" | head -10'" in /home/claude-agent/forge-build/forge-assets/jobs/k2-tank-v1
 succeeded in 655ms:
usage: gpu_gate.py [-h] [--status] [--name NAME] [--need-mib NEED_MIB]
                   [--priority {build,batch}] [--lock-dir LOCK_DIR]
                   [--timeout TIMEOUT] [--poll POLL]
                   [--max-concurrent MAX_CONCURRENT]
                   ...

Run a command under the shared-GPU gate, or show the slots.

positional arguments:
  command               command to run, after --

options:
  -h, --help            show this help message and exit
  --status              print the live slots as JSON and exit
  --name NAME           job name, e.g. blender or hunyuan
  --need-mib NEED_MIB   VRAM the job needs, in MiB
  --priority {build,batch}
  --lock-dir LOCK_DIR
  --timeout TIMEOUT     seconds to wait for a slot before giving up
  --poll POLL           seconds between retries
  --max-concurrent MAX_CONCURRENT
1417686     368 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/type99-tank-v1/build_type99-tank.py -- --rebake
1421110     330 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/k2-tank-v1/build_k2-tank.py
1422500     310 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/t14-armata-tank-v1/build_t14-armata-tank.py
1432700     177 python3 /opt/gpu-gate/gpu_gate.py --name blender-ruth --need-mib 5000 --priority build --poll 2 --max-concurrent 3 --timeout 1200 -- /root/blender-spike/blender-5.2.0-linux-x64/blender.real -b /root/ruth-teaser-20261011/director/shots.blend --python-exit-code 1 --python /root/ruth-teaser-20261011/director/render_director.py -- previz 501 900
1434427     156 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/t55-tank-v1/build_t55-tank.py
1439944      98 /root/blender-spike/blender-5.2.0-linux-x64/blender.real -b /root/ruth-teaser-20261011/director/shots.blend --python-exit-code 1 --python /root/ruth-teaser-20261011/director/render_director.py -- previz 501 900
1445534      32 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/a7v-tank-v1/build_a7v-tank.py
1445538      32 /root/blender-spike/blender-5.2.0-linux-x64/blender.real -b --python-exit-code 1 --python /root/fal-author/a7v-tank-v1/build_a7v-tank.py
1447281      12 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/char-b1-tank-v1/build_char-b1-tank.py
1448422       0 python3 /opt/gpu-gate/gpu_gate.py --name blender-ruth --need-mib 5000 --priority build --poll 2 --max-concurrent 3 --timeout 1200 -- /root/blender-spike/blender-5.2.0-linux-x64/blender.real -b --factory-startup --python-exit-code 1 --python /root/ruth-teaser-20261011/creatures/action_proofs.py

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/bin/bash -lc "ssh gex44 'tail -12 /root/fal-author/k2-tank-v1/build.log; python3 /opt/gpu-gate/gpu_gate.py --status'" in /home/claude-agent/forge-build/forge-assets/jobs/k2-tank-v1
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[
  {
    "name": "blender-ruth",
    "pid": 1432700,
    "need_mib": 5000,
    "started": 1791737013.8430426,
    "priority": "build"
  },
  {
    "name": "blender",
    "pid": 1447281,
    "need_mib": 6000,
    "started": 1791737140.175623,
    "priority": "batch"
  }
]

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/bin/bash -lc "ssh gex44 'tail -8 /root/fal-author/k2-tank-v1/build.log'" in /home/claude-agent/forge-build/forge-assets/jobs/k2-tank-v1
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/bin/bash -lc 'tail -35 build_k2-tank.py' in /home/claude-agent/forge-build/forge-assets/jobs/k2-tank-v1
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   if n.type=='MIX_RGB':
    for s in n.inputs[1:]:
     if not s.is_linked:s.default_value=tuple(PAINTS[0][1])+(1,)
 for o in a:
  if o.name=='Turret':o.rotation_euler.z+=math.radians(30)
  elif o.name in ['Gun','MG'] or o.name.startswith(('Wheel_','Hatch_')):o.rotation_euler.x+=math.radians(30)
 render('pivots.png',1280,720,16)
 print('PROOF_COMPLETE',flush=True)

if '--proof-only' in sys.argv:
 proof()
else:
 hull,turret,gun,barrel=build()
 budget(healthy,126000)
 export(healthy,'k2-tank.glb');ha=metrics(healthy)
 # Healthy image and clay establish the geometry before damage is constructed.
 studio();render('final.png',1920,1080,40)
 camera((12,-1.63,1.20),(0,-1.63,1.20),12.1);render('side.png',1920,1080,32)
 camera((10,-14,6),(0,-1.05,1.05),12.8)
 clay=bpy.data.materials.new('_Clay');clay.diffuse_color=(.35,.35,.35,1);clay.use_nodes=True;clay.node_tree.nodes.get('Principled BSDF').inputs['Base Color'].default_value=(.35,.35,.35,1)
 sc.view_layers[0].material_override=clay;render('clay.png',1920,1080,24);sc.view_layers[0].material_override=None
 twins=make_damage(hull,turret,gun,barrel)
 
 for o in damage:
  if o.type=='MESH':
   for slot in o.material_slots:
    if slot.material is None:slot.material=M['Burnt']
    if slot.material.name in ['Metal','Glass','Lamps']:slot.material=M['Scars']
    elif slot.material.name=='Interior':slot.material=M['Burnt']
 budget(damage,105000)
 export(damage,'k2-tank-damage.glb');da=metrics(damage)
 manifest={'schema':'tank-damage/v1','units':'metres','axes':{'forward':'+Z','up':'+Y','left':'+X'},'healthy':ha,'damaged':da,'paints':[{'name':n,'linearRGB':c} for n,c in PAINTS], 'damage':{'parts':[{'part':o.name,'twin':twins.get(o.name)} for o in healthy if o.name.startswith('Part_')],'scars':[o.name for o in damage if o.name.startswith('Scar_')],'broken':{'Track_L':'Track_L_Broken','Track_R':'Track_R_Broken','Gun':'Gun_Broken'},'wreck':['Wreck_Hull','Wreck_Turret']}}
 (ROOT/'nodes.json').write_text(json.dumps(manifest,indent=2))
 (ROOT/'NOTES.md').write_text('K2 Black Panther style MBT, metre scale, articulated and destructible; no insignia.\n'+f'Triangles: healthy {ha["triangles"]:,}; damage {da["triangles"]:,}.\n'+'Materials: Paint, Rubber, TrackSteel, Metal, Glass, Lamps, Interior; damage also Burnt and Scars.\n'+'Textures: Cycles-baked shared tiles; Paint 1024px, other maps 256–512px, ORM at most 512px.\n'+'Poly Haven CC0 ids: rusty_metal_02, rust_coarse_01, rusty_metal_04, metal_plate, rubberized_track; https://polyhaven.com/license .\n'+'Reference differences: simplified suspension internals and sensor internals; artistic battle damage; roof fittings exceed nominal turret height.\n')
 proof()

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/bin/bash -lc "ssh gex44 'ps -eo pid,etime,args | rg \"1421110|blender.*python|gpu.*gate\" | head -15'" in /home/claude-agent/forge-build/forge-assets/jobs/k2-tank-v1
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bash: line 1: rg: command not found

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/bin/bash -lc "rg -n 'coord|claim' /home/claude-agent/AGENTS.md | head -20" in /home/claude-agent/forge-build/forge-assets/jobs/k2-tank-v1
 succeeded in 0ms:
28:- **local** `204.168.129.84` — orchestrator. Opus planning, this memory store, the `coord` bus. No app/infra runs here.
62:- **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.
66:- **Visual quality is the product**: every change touching templates/prompts must be visually validated before claiming success. "It builds and deploys" ≠ "it looks right".
68:- **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.
69:- **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. Gemini 3.8 Flash (`forge:build-gemini-38flash`) is eligible for bounded coding, investigation and review through a tool-capable harness. Local builders use `forge-agent run --harness gemini --model forge:build-gemini-38flash --repo <repo> --purpose <task> --task <brief>` with a bounded `--timeout`; this runs Claude Code with copied shared skills/rules/hooks, Forge MCP and isolated proxy auth. 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.
76:(safety = the PreToolUse secret + coordination guards, not a sandbox):
95:store, coordination protocol, standing laws; `forge-hub/agent/harness_env.py`),
97:memory/skills/coordination. Docs: `forge-hub/agent/DEEPSEEK.md`, `GEMINI.md`.
148:**Max plan API credits (2026-10-08):** each Max 20x plan gives $200/month (Max 5x $100) of Claude Platform credit, claimed on
152:Not claimed yet. Memory `reference_max_plan_monthly_api_credits_2026_10_08.md`.
174:- 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.
175:- 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.
212:- **Never:** anything with uncommitted edits, a live process in it, or a live coord claim; other sessions' dirs
216:  If unsure whose it is, leave it and `coord note` it.
228:## Multi-Claude coordination (durable)
230: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.
233:1. `coord check <host:path>` — is anyone else on it? (exit 3 = conflict)
234:2. `coord claim <host:path> [--note "..."]` — take it (exclusive; auto-expires, TTL 30m, refreshed by heartbeat).
235:3. Do the work, then `coord release <host:path>` (or `--all`).
236:4. `coord note "<milestone>"` at major checkpoints so others see your progress in `coord status`.

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/bin/bash -lc "ssh gex44 'ps -eo pid,etime,args | grep -E \"1421110|blender.*python|gpu.*gate\" | head -15'" in /home/claude-agent/forge-build/forge-assets/jobs/k2-tank-v1
 succeeded in 560ms:
1417685       08:59 bash -c /root/blender-spike/blender-5.2.0-linux-x64/blender -b --python-exit-code 1 --python /root/fal-author/type99-tank-v1/build_type99-tank.py -- --rebake > /root/fal-author/type99-tank-v1/build.log 2>&1
1417686       08:59 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/type99-tank-v1/build_type99-tank.py -- --rebake
1421109       08:21 bash -c /root/blender-spike/blender-5.2.0-linux-x64/blender -b --python-exit-code 1 --python /root/fal-author/k2-tank-v1/build_k2-tank.py > /root/fal-author/k2-tank-v1/build.log 2>&1
1421110       08:21 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/k2-tank-v1/build_k2-tank.py
1434426       05:27 bash -c /root/blender-spike/blender-5.2.0-linux-x64/blender -b --python-exit-code 1 --python /root/fal-author/t55-tank-v1/build_t55-tank.py > /root/fal-author/t55-tank-v1/build.log 2>&1
1434427       05:27 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/t55-tank-v1/build_t55-tank.py
1458439       00:55 bash -c /root/ruth-teaser-20261011/blender.sh -b /root/ruth-teaser-20261011/director/shots.blend --python-exit-code 1 --python /root/ruth-teaser-20261011/director/audit_director.py --python /root/ruth-teaser-20261011/director/render_director.py -- probe 1 70 166 222 286 389 446 490 550 606 702 780 874 900 > /root/ruth-teaser-20261011/director/probes.log 2>&1; tail -12 /root/ruth-teaser-20261011/director/probes.log
1458441       00:55 python3 /opt/gpu-gate/gpu_gate.py --name blender-ruth --need-mib 5000 --priority build --poll 2 --max-concurrent 3 --timeout 1200 -- /root/blender-spike/blender-5.2.0-linux-x64/blender.real -b /root/ruth-teaser-20261011/director/shots.blend --python-exit-code 1 --python /root/ruth-teaser-20261011/director/audit_director.py --python /root/ruth-teaser-20261011/director/render_director.py -- probe 1 70 166 222 286 389 446 490 550 606 702 780 874 900
1462843       00:15 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/chi-ha-tank-v1/build_chi-ha-tank.py
1463715       00:07 /root/blender-spike/blender-5.2.0-linux-x64/blender.real -b --python-exit-code 1 --python /root/fal-author/type99-tank-v1/build_type99-tank.py -- --rebake
1464469       00:00 /root/blender-spike/blender-5.2.0-linux-x64/blender.real -b --python-exit-code 1 --python /root/fal-author/t55-tank-v1/build_t55-tank.py
1464587       00:00 bash -c ps -eo pid,etime,args | grep -E "1421110|blender.*python|gpu.*gate" | head -15
1464589       00:00 grep -E 1421110|blender.*python|gpu.*gate

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/bin/bash -lc "sed -n '1,120p' build_k2-tank.py" in /home/claude-agent/forge-build/forge-assets/jobs/k2-tank-v1
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"""K2-style MBT, authored in metres. Blender 5.2, Cycles/OptiX.
Run: blender -b --python-exit-code 1 --python build_k2-tank.py
Optional -- --proof-only reloads exported GLBs for proof rendering.
CC0: Poly Haven rusty_metal_02, rust_coarse_01, rusty_metal_04, metal_plate, rubberized_track
"""
import bpy, bmesh, math, os, sys, json, struct, urllib.request, random
from pathlib import Path
from mathutils import Vector, Matrix
import numpy as np
ROOT=Path(__file__).resolve().parent
CACHE=ROOT/'textures'; CACHE.mkdir(exist_ok=True)
random.seed(28)
bpy.ops.object.select_all(action='SELECT'); bpy.ops.object.delete(use_global=False)
sc=bpy.context.scene; sc.render.engine='CYCLES'; sc.cycles.samples=24
prefs=bpy.context.preferences.addons['cycles'].preferences
prefs.compute_device_type='OPTIX'; prefs.get_devices()
for d in prefs.devices:d.use=d.type=='OPTIX'
sc.cycles.device='GPU'; sc.cycles.use_denoising=True
sc.render.image_settings.file_format='PNG'; sc.render.film_transparent=False
sc.world.color=(.24,.24,.24)
sc.view_settings.view_transform='AgX'
M={}; GROUPS={}; healthy=[]; damage=[]
PAINTS=[('forest green',[.10,.13,.08]),('olive drab',[.17,.17,.085]),('NATO green',[.075,.12,.075]),('desert tan',[.48,.36,.21]),('field grey',[.22,.25,.22]),('winter white',[.72,.75,.70])]

def download(asset,typ):
 p=CACHE/f'{asset}_{typ}_1k.jpg'
 if not p.exists():
  url=f'https://dl.polyhaven.org/file/ph-assets/Textures/jpg/1k/{asset}/{asset}_{typ}_1k.jpg'
  req=urllib.request.Request(url,headers={'User-Agent':'Mozilla/5.0'})
  with urllib.request.urlopen(req,timeout=90) as r:p.write_bytes(r.read())
 return str(p)

def material(name,asset,color,rough,metal,res=512):
 """Bake a shared physical tile, including photographic and procedural detail."""
 mat=bpy.data.materials.new(name); mat.use_nodes=True; nt=mat.node_tree; n=nt.nodes; l=nt.links
 bs=n.get('Principled BSDF'); out=n.get('Material Output')
 tex=n.new('ShaderNodeTexImage');tex.image=bpy.data.images.load(download(asset,'diff'),check_existing=True)
 uv=n.new('ShaderNodeTexCoord');l.new(uv.outputs['UV'],tex.inputs['Vector'])
 bw=n.new('ShaderNodeRGBToBW');l.new(tex.outputs['Color'],bw.inputs[0])
 ramp=n.new('ShaderNodeValToRGB');l.new(bw.outputs[0],ramp.inputs[0])
 if name=='Paint':a,b=(.26,.26,.26,1),(.98,.98,.98,1)
 else:a,b=tuple(c*.42 for c in color)+(1,),tuple(color)+(1,)
 ramp.color_ramp.elements[0].position=.12;ramp.color_ramp.elements[0].color=a
 ramp.color_ramp.elements[1].position=.8;ramp.color_ramp.elements[1].color=b
 noise=n.new('ShaderNodeTexNoise');noise.inputs['Scale'].default_value=48;noise.inputs['Detail'].default_value=3
 l.new(uv.outputs['UV'],noise.inputs['Vector'])
 mix=n.new('ShaderNodeMixRGB');mix.blend_type='MULTIPLY';mix.inputs[0].default_value=.16
 l.new(ramp.outputs[0],mix.inputs[1]);l.new(noise.outputs['Fac'],mix.inputs[2])
 # Baked fine streaks, broad mottling and dust film, neutral for recolouring.
 if name in ['Paint','Burnt']:
  mapping=n.new('ShaderNodeVectorMath');mapping.operation='MULTIPLY';mapping.inputs[1].default_value=(5,24,1);l.new(uv.outputs['UV'],mapping.inputs[0])
  streak=n.new('ShaderNodeTexNoise');streak.inputs['Scale'].default_value=2.8;streak.inputs['Detail'].default_value=3.0;l.new(mapping.outputs[0],streak.inputs['Vector'])
  sr=n.new('ShaderNodeValToRGB');sr.color_ramp.elements[0].position=.29;sr.color_ramp.elements[0].color=(.28,.28,.28,1);sr.color_ramp.elements[1].position=.64;sr.color_ramp.elements[1].color=(1,1,1,1);l.new(streak.outputs['Fac'],sr.inputs[0])
  mm=n.new('ShaderNodeMixRGB');mm.blend_type='MULTIPLY';mm.inputs[0].default_value=.39 if name=='Paint' else .85;l.new(mix.outputs[0],mm.inputs[1]);l.new(sr.outputs[0],mm.inputs[2]);mix=mm
 l.new(mix.outputs[0],bs.inputs['Base Color']);bs.inputs['Roughness'].default_value=rough;bs.inputs['Metallic'].default_value=metal
 normal=n.new('ShaderNodeTexImage');normal.image=bpy.data.images.load(download(asset,'nor_gl'),check_existing=True);normal.image.colorspace_settings.name='Non-Color'
 norm=n.new('ShaderNodeNormalMap');norm.inputs['Strength'].default_value=.13 if name=='Paint' else (0 if name in ['Glass','Lamps','Interior'] else .3);l.new(normal.outputs['Color'],norm.inputs['Color']);l.new(norm.outputs[0],bs.inputs['Normal'])
 arm=n.new('ShaderNodeTexImage');arm.image=bpy.data.images.load(download(asset,'arm'),check_existing=True);arm.image.colorspace_settings.name='Non-Color'
 sep=n.new('ShaderNodeSeparateColor');l.new(arm.outputs[0],sep.inputs[0])
 rr=n.new('ShaderNodeMath');rr.operation='MULTIPLY_ADD';rr.inputs[1].default_value=.24;rr.inputs[2].default_value=rough-.12;l.new(sep.outputs[1],rr.inputs[0]);l.new(rr.outputs[0],bs.inputs['Roughness'])
 bpy.ops.mesh.primitive_plane_add(size=1);plane=bpy.context.object;plane.data.materials.append(mat)
 target=n.new('ShaderNodeTexImage');n.active=target
 images={}
 emit=n.new('ShaderNodeEmission')
 for kind,size in [('base',res),('normal',min(res,512)),('orm',min(512,res))]:
  im=bpy.data.images.new(name+'_'+kind,width=size,height=size,alpha=False)
  if kind!='base':im.colorspace_settings.name='Non-Color'
  target.image=im;n.active=target
  if kind=='base':l.new(mix.outputs[0],emit.inputs[0]);l.new(emit.outputs[0],out.inputs[0]);bpy.ops.object.bake(type='EMIT',margin=4)
  elif kind=='normal':l.new(bs.outputs[0],out.inputs[0]);bpy.ops.object.bake(type='NORMAL',margin=4)
  else:
   comb=n.new('ShaderNodeCombineColor');comb.inputs[0].default_value=1;comb.inputs[2].default_value=metal;l.new(rr.outputs[0],comb.inputs[1]);l.new(comb.outputs[0],emit.inputs[0]);l.new(emit.outputs[0],out.inputs[0]);bpy.ops.object.bake(type='EMIT',margin=4)
  im.filepath_raw=str(CACHE/(name+'_'+kind+('.jpg' if kind=='base' else '.png')));im.file_format='JPEG' if kind=='base' else 'PNG';im.save();images[kind]=im
 bpy.data.objects.remove(plane,do_unlink=True)
 n.clear();bs=n.new('ShaderNodeBsdfPrincipled');out=n.new('ShaderNodeOutputMaterial');l.new(bs.outputs[0],out.inputs[0])
 for kind,im in images.items():
  t=n.new('ShaderNodeTexImage');t.image=im
  if kind=='base':
   if name=='Paint':
    mu=n.new('ShaderNodeMixRGB');mu.blend_type='MULTIPLY';mu.inputs[0].default_value=1;mu.inputs[2].default_value=tuple(PAINTS[0][1])+(1,);mu.name='PaintTint';l.new(t.outputs[0],mu.inputs[1]);l.new(mu.outputs[0],bs.inputs['Base Color'])
   else:l.new(t.outputs[0],bs.inputs['Base Color'])
  elif kind=='normal':nm=n.new('ShaderNodeNormalMap');l.new(t.outputs[0],nm.inputs['Color']);l.new(nm.outputs[0],bs.inputs['Normal'])
  else:
   se=n.new('ShaderNodeSeparateColor');l.new(t.outputs[0],se.inputs[0]);l.new(se.outputs[1],bs.inputs['Roughness']);l.new(se.outputs[2],bs.inputs['Metallic'])
 M[name]=mat;print('BAKED',name,flush=True)
 return mat

class Geo:
 def __init__(self):self.v=[];self.f=[];self.mi=[];self.sm=[]
 def add(self,v,f,mat='Paint',smooth=False):
  off=len(self.v);self.v.extend(v);self.f.extend(tuple(off+i for i in face) for face in f);self.mi.extend([mat]*len(f));self.sm.extend([smooth]*len(f))
 def box(self,c,s,mat='Paint',rot=None):
  vs=[Vector((x*s[0]/2,y*s[1]/2,z*s[2]/2)) for x,y,z in [(-1,-1,-1),(1,-1,-1),(1,1,-1),(-1,1,-1),(-1,-1,1),(1,-1,1),(1,1,1),(-1,1,1)]]
  if rot:vs=[rot@v for v in vs]
  self.add([Vector(c)+v for v in vs],[(0,3,2,1),(4,5,6,7),(0,1,5,4),(1,2,6,5),(2,3,7,6),(3,0,4,7)],mat)
 def cyl(self,c,r,depth,mat='Paint',axis=(0,0,1),n=24,r2=None):
  a=Vector(axis).normalized();u=a.cross(Vector((0,1,0)))
  if u.length<.1:u=a.cross(Vector((1,0,0)))
  u.normalize();v=a.cross(u);verts=[]
  for h,rad in [(-depth/2,r),(depth/2,r if r2 is None else r2)]:
   verts.extend(Vector(c)+a*h+rad*(u*math.cos(i*2*math.pi/n)+v*math.sin(i*2*math.pi/n)) for i in range(n))
  self.add(verts,[tuple(reversed(range(n))),tuple(range(n,2*n))]+[(i,(i+1)%n,(i+1)%n+n,i+n) for i in range(n)],mat)
  self.sm[-n:]=[True]*n
 def line(self,points,r,mat='Metal',n=8):
  for a,b in zip(points,points[1:]):a,b=Vector(a),Vector(b);self.cyl((a+b)/2,r,(b-a).length,mat,b-a,n)
 def ring(self,c,ri,ro,depth,mat='Paint',axis=(0,0,1),n=48):
  a=Vector(axis).normalized();u=a.cross(Vector((0,1,0)))
  if u.length<.1:u=a.cross(Vector((1,0,0)))
  u.normalize();v=a.cross(u);vs=[]
  for h,r in [(-depth/2,ro),(depth/2,ro),(depth/2,ri),(-depth/2,ri)]:vs += [Vector(c)+a*h+r*(u*math.cos(i*2*math.pi/n)+v*math.sin(i*2*math.pi/n)) for i in range(n)]
  self.add(vs,[(j*n+i,j*n+(i+1)%n,((j+1)%4)*n+(i+1)%n,((j+1)%4)*n+i) for j in range(4) for i in range(n)],mat)
  self.sm[-4*n:-3*n]=[True]*n;self.sm[-2*n:-n]=[True]*n
 def loft(self,rings,mat='Paint'):
  n=len(rings[0]);self.add(sum(rings,[]),[tuple(reversed(range(n))),tuple(range((len(rings)-1)*n,len(rings)*n))]+[(j*n+i,j*n+(i+1)%n,(j+1)*n+(i+1)%n,(j+1)*n+i) for j in range(len(rings)-1) for i in range(n)],mat)
 def object(self,name,pivot=(0,0,0),parent=None,bev=.008,collection=healthy):
  mesh=bpy.data.meshes.new(name);mesh.from_pydata([Vector(v)-Vector(pivot) for v in self.v],[],self.f);mesh.update()
  bm=bmesh.new();bm.from_mesh(mesh);bmesh.ops.recalc_face_normals(bm,faces=list(bm.faces));bm.to_mesh(mesh);bm.free()
  o=bpy.data.objects.new(name,mesh);sc.collection.objects.link(o);o.location=pivot
  used=list(dict.fromkeys(self.mi))
  for m in used:mesh.materials.append(M[m])

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'
p='build_k2-tank.py'
s=open(p).read().replace('artistic battle damage; roof fittings exceed nominal turret height.','artistic battle damage; simplified fire-control optics and concealed running gear.')
open(p,'w').write(s)
PY
scp build_k2-tank.py gex44:/root/fal-author/k2-tank-v1/build_k2-tank.py" in /home/claude-agent/forge-build/forge-assets/jobs/k2-tank-v1
 succeeded in 879ms:
hook: PreToolUse
hook: PreToolUse Completed
codex
The main proportions and rig are in place. I’m checking the updated materials and wheel geometry next, then the exported damage states and paint variants. The shared GPU queue is currently the main delay.
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 '220,410p' build_k2-tank.py" in /home/claude-agent/forge-build/forge-assets/jobs/k2-tank-v1
 succeeded in 0ms:
   wh=g.object(f'Wheel_{label}{j+1}',c,bev=.003)
   wh['wheel_role']=kind;wh['side']=label
   for p in wh.data.polygons:
    if len(p.vertices)==4:p.use_smooth=True
  make_track(s,label)
 # Each sawtooth plate has real thickness, fittings, mounting bosses underneath.
 for s,label in [(1,'L'),(-1,'R')]:
  for i in range(7):
   ya=-3.25+i*.91;yb=ya+.895;g=Geo()
   yz=[(ya,1.39),(yb,1.39),(yb,.91)]
   for k in range(4):yz.extend([(yb-k*.223-.10,.83),(yb-(k+1)*.223,.91)])
   vs=[(s*x,y,z) for x in [1.69,1.75] for y,z in yz];n=len(yz)
   g.add(vs,[tuple(reversed(range(n))),tuple(range(n,2*n))]+[(j,(j+1)%n,(j+1)%n+n,j+n) for j in range(n)])
   bolts(g,[(s*1.757,y,1.33) for y in [ya+.10,yb-.10]],(s,0,0),r=.019)
   g.box((s*1.725,(ya+yb)/2,1.41),(.11,.15,.05),'Metal')
   g.object(f'Part_Skirt_{label}{i+1}',(s*1.72,(ya+yb)/2,1.12),bev=.004)
  # four bent front/rear fenders, frontal lamp assemblies
  for front,y in [('F',-3.36),('R',3.34)]:
   g=Geo();g.box((s*1.45,y,1.29),(.70,.73,.10),'Paint',Matrix.Rotation(.22 if front=='F' else -.20,3,'X'))
   g.box((s*1.47,y+(-.32 if front=='F' else .32),1.10),(.64,.055,.25),'Rubber')
   g.object(f'Part_Fender_{front}{label}',(s*1.45,y,1.25),bev=.008)
  g=Geo();g.box((s*1.12,-3.59,1.20),(.36,.13,.17),'Rubber')
  for x in [s*1.12-.09,s*1.12+.09]:g.cyl((x,-3.67,1.21),.059,.024,'Lamps',(0,1,0),24)
  g.line([(s*.91,-3.69,1.12),(s*.91,-3.69,1.33),(s*1.34,-3.69,1.33),(s*1.34,-3.69,1.12)],.015,'Metal')
  g.object(f'Part_LampGuard_{label}',(s*1.12,-3.62,1.23),bev=.003)
  g=Geo();g.box((s*1.30,3.70,1.13),(.32,.07,.22));g.cyl((s*1.3,3.740,1.14),.07,.018,'Lamps',(0,1,0),24);g.object(f'Part_TailLamp_{label}',(s*1.3,3.70,1.13),bev=.004)
 # engine deck complete below separately detachable grilles
 for x in [-.67,.67]:
  g=Geo();g.box((x,2.93,1.492),(1.18,1.10,.035),'Rubber')
  g.ring((x,2.96,1.525),.42,.46,.035,'Metal',n=64)
  for yy in np.arange(2.46,3.45,.055):g.box((x,yy,1.535),(1.08,.018,.025),'Paint')
  for xx in np.arange(x-.5,x+.51,.12):g.box((xx,2.94,1.52),(.018,1.02,.026),'Metal')
  g.object('Part_EngineGrille_'+('L' if x>0 else 'R'),(x,2.94,1.52),bev=.003)
 g=Geo();g.box((0,3.67,1.36),(1.95,.15,.20));g.object('Part_ExhaustShroud',(0,3.67,1.36),bev=.009)
 # bustle bins and tubular cage wrap rear turret
 g=Geo();g.box((0,2.17,1.88),(2.67,.46,.43));
 for x in [-.91,0,.91]:
  g.box((x,2.409,1.9),(.86,.018,.32));bolts(g,[(x+dx,2.429,z) for dx in [-.35,.35] for z in [1.78,2.02]],(0,1,0))
 g.object('Part_Turret_BustleBins',(0,2.17,1.88),turret,.012)
 g=Geo()
 for z in [1.66,1.82,1.99,2.09]:g.line([(-1.48,1.51,z),(-1.48,2.52,z),(1.48,2.52,z),(1.48,1.51,z)],.021,'Paint')
 for x in [-1.48,-.95,0,.95,1.48]:g.line([(x,2.52,1.64),(x,2.52,2.12)],.023,'Paint')
 g.object('Part_Turret_BustleRack',(0,2.39,1.88),turret,.003)
 # hatches: opaque recessed wells, hinged lids with bars and latches
 for name,c,r,parent in [('Commander',(-.6,.32,2.17),.28,turret),('Loader',(.58,.12,2.17),.265,turret),('Driver',(.62,-2.28,1.54),.275,None)]:
  g=Geo();g.cyl(c,r,.047,'Paint',n=12);g.ring((c[0],c[1],c[2]+.029),r-.045,r-.025,.012,'Metal',n=12)
  g.line([(c[0]-.09,c[1],c[2]+.03),(c[0]-.09,c[1],c[2]+.085),(c[0]+.09,c[1],c[2]+.085),(c[0]+.09,c[1],c[2]+.03)],.014,'Paint')
  g.cyl((c[0],c[1]+r,c[2]),.039,.26,'Metal',(1,0,0),16)
  g.object('Hatch_'+name,(c[0],c[1]+r,c[2]),parent,.004)
 # Roof architecture: autoloader access covers, seam trims and cupola periscopes.
 for i,(x,y,w,h) in enumerate([(-.70,1.28,.83,.83),(.64,1.27,.84,.85),(0,-.61,.54,.66)]):
  g=Geo();g.box((x,y,2.14),(w,h,.045),'Paint')
  bolts(g,[(x+dx,y+dy,2.168) for dx in [-w/2+.055,w/2-.055] for dy in [-h/2+.055,0,h/2-.055]],r=.014)
  g.line([(x-.095,y+.12,2.172),(x-.095,y+.12,2.22),(x+.095,y+.12,2.22),(x+.095,y+.12,2.172)],.011,'Metal')
  g.object('Part_Turret_RoofPanel'+str(i+1),(x,y,2.16),turret,.006)
 g=Geo();g.ring((-.60,.32,2.145),.29,.38,.055,'Paint',n=32)
 for a in np.arange(0,math.tau,math.tau/7):
  x=-.60+.344*math.cos(a);y=.32+.344*math.sin(a)
  g.box((x,y,2.17),(.11,.067,.055),'Rubber',Matrix.Rotation(a,3,'Z'));g.box((x,y,2.2),(.079,.050,.009),'Glass',Matrix.Rotation(a,3,'Z'))
 g.object('Part_Turret_CupolaRing',(-.60,.32,2.16),turret,.003)
 # welded hull access strip and small deck recesses, retained when equipment is stripped
 g=Geo()
 for x in [-.79,-.15]:
  g.box((x,-2.14,1.49),(.47,.82,.018),'Paint')
  bolts(g,[(x+dx,yy,1.505) for dx in [-.19,.19] for yy in [-2.49,-1.79]],r=.012)
 for s in [-1,1]:
  g.line([(s*1.35,-2.66,1.495),(s*1.35,3.48,1.495)],.008,'Metal')
  for yy in [-2.6,-1.4,0,1.4,2.6]:
   g.box((s*1.56,yy,1.47),(.10,.18,.035));bolts(g,[(s*1.56,yy,1.492)],r=.013)
 detailing=g.object('_HullFixedDetail',bev=.003,collection=[]);join_into(hull,[detailing])
 # optical panoramic towers with armoured hood, independent glass panes
 for label,x,y in [('Commander',-.70,-.23),('Gunner',.66,-1.08)]:
  g=Geo();g.cyl((x,y,2.13),.18,.12,'Paint',n=32);g.box((x,y,2.26),(.28,.25,.22));g.box((x,y-.132,2.26),(.19,.012,.17),'Glass');g.box((x,y,2.385),(.32,.29,.025))
  g.object('Part_Turret_Sight_'+label,(x,y,2.24),turret,.007)
 # smoke dischargers, near corners
 for s,label in [(1,'L'),(-1,'R')]:
  g=Geo();g.box((s*1.16,-1.38,2.055),(.28,.29,.075))
  for yy in [-1.45,-1.34]:
   for xx in [s*1.1,s*1.23]:g.ring((xx,yy,2.115),.026,.044,.13,'Metal',(0,-.5,.87),16)
  g.object('Part_Turret_Smoke_'+label,(s*1.16,-1.39,2.10),turret,.003)
  g=Geo();g.cyl((s*1.04,1.52,2.16),.055,.10);g.cyl((s*1.04,1.52,2.29),.012,.22,'Metal',n=12);g.object('Part_Turret_Antenna_'+label,(s*1.04,1.52,2.27),turret,.002)
 # roof machine gun, pivot and receiver / barrel / ammo box
 g=Geo();g.cyl((-.52,.61,2.22),.075,.19,'Metal');g.box((-.52,.43,2.33),(.12,.42,.13),'Metal');g.cyl((-.52,-.06,2.34),.024,.60,'Metal',(0,1,0),24)
 g.ring((-.52,-.38,2.34),.013,.028,.07,'Metal',(0,1,0),20);g.box((-.72,.47,2.29),(.24,.26,.20));g.box((-.52,.71,2.31),(.10,.20,.07),'Rubber')
 g.object('MG',(-.52,.61,2.24),turret,.003)
 # tied down tow cables and deck tools
 for s,label in [(1,'L'),(-1,'R')]:
  g=Geo();pts=[(s*1.49,yy,1.5+.025*math.sin(yy*2)) for yy in np.linspace(-1.75,2.8,32)];g.line(pts,.022,'Metal',10)
  for yy in [-1.75,2.8]:g.ring((s*1.49,yy,1.52),.044,.07,.025,'Metal',n=20)
  for yy in [-1.5,.1,1.8]:g.box((s*1.49,yy,1.52),(.11,.09,.04))
  g.object('Part_TowCable_'+label,(s*1.49,.5,1.52),bev=.002)
  g=Geo();g.box((s*1.16,2.03,1.52),(.30,.64,.12));g.line([(s*1.16,1.77,1.6),(s*1.16,2.3,1.6)],.028,'Metal');g.object('Part_ToolBox_'+label,(s*1.16,2.03,1.56),bev=.008)
 for name,p,parent in [('Seat_Commander',(-.6,.32,2.24),turret),('Seat_Driver',(.62,-2.28,1.6),None),('Exhaust',(0,3.79,1.26),None),('Light_Head_L',(1.12,-3.69,1.21),None),('Light_Head_R',(-1.12,-3.69,1.21),None),('Fx_Engine',(0,2.95,1.53),None),('Fx_Ammo',(0,.4,.9),None),('Fx_Hatch',(-.6,.32,2.23),turret)]:empty(name,p,parent)

 for base,x,y,top,r in [(hull,.62,-2.28,1.5,.25),(turret,-.6,.32,2.14,.245),(turret,.58,.12,2.14,.235)]:
  bpy.ops.mesh.primitive_cylinder_add(vertices=48,radius=r,depth=.40,location=(x,y,top-.12));cut=bpy.context.object
  bpy.context.view_layer.objects.active=base;mod=base.modifiers.new('Crew hatch opening','BOOLEAN');mod.operation='DIFFERENCE';mod.object=cut;bpy.ops.object.modifier_apply(modifier=mod.name);bpy.data.objects.remove(cut,do_unlink=True)
  well=Geo();well.ring((x,y,top-.17),r-.009,r+.006,.31,'Interior',n=48);well.cyl((x,y,top-.33),r,.022,'Interior',n=48)
  lining=well.object('_crew_well',collection=[],bev=0);join_into(base,[lining])
 bpy.context.view_layer.update()
 return hull,turret,gun,barrel

# capsule track centreline, bottom touches exactly ground after thickness
TRACK_R=.59; TRACK_Y=2.95; TRACK_Z=.66

def track_path(t):
 # perimeter in y/z; straight bottom -> front arc -> upper -> rear arc
 L=4*TRACK_Y+2*math.pi*TRACK_R;t=t%L
 if t<2*TRACK_Y:return (-TRACK_Y+t,.07,0)
 t-=2*TRACK_Y
 if t<math.pi*TRACK_R:
  a=-math.pi/2+t/TRACK_R;return(TRACK_Y+TRACK_R*math.cos(a),TRACK_Z+TRACK_R*math.sin(a),a+math.pi/2)
 t-=math.pi*TRACK_R
 if t<2*TRACK_Y:return(TRACK_Y-t,1.25,math.pi)
 t-=2*TRACK_Y;a=math.pi/2+t/TRACK_R;return(-TRACK_Y+TRACK_R*math.cos(a),TRACK_Z+TRACK_R*math.sin(a),a+math.pi/2)

def make_track(s,label,broken=False,parent=None):
 g=Geo();L=4*TRACK_Y+math.tau*TRACK_R;N=94
 for i in range(N):
  y,z,a=track_path(i*L/N)
  if broken:
   if y< -2.7 and z>.2:continue
   if z>1.0:z=.13+max(0,(y+.8))*.10;a=0
   if i<14:y=-4.3+i*.145;z=.07;a=0
  rot=Matrix.Rotation(a,3,'X');c=Vector((s*1.45,y,z+.003))
  g.box(c,(.60,L/N*.92,.105),'TrackSteel',rot)
  for dx in [-.155,.155]:g.box(c+rot@Vector((dx,0,-.061)),(.24,L/N*.69,.024),'Rubber' if not broken else 'TrackSteel',rot)
  g.box(c+rot@Vector((0,0,.075)),(.08,.065,.10),'TrackSteel',rot)
  g.cyl(c+rot@Vector((0,L/N*.45,0)),.025,.66,'TrackSteel',(1,0,0),10)
 name=f'Track_{label}'+('_Broken' if broken else '')
 o=g.object(name,(s*1.45,0,0) if not broken else (0,0,0),parent,bev=.002,collection=damage if broken else healthy)
 minz=min(v.co.z+o.location.z for v in o.data.vertices)
 for v in o.data.vertices:v.co.z-=minz
 if not broken:
  # V is arc length once around loop; U runs across belt.
  uv=o.data.uv_layers.active
  for p in o.data.polygons:
   for li in p.loop_indices:
    v=o.data.vertices[o.data.loops[li].vertex_index].co+o.location;y,z=v.y,v.z
    if y>TRACK_Y:dist=2*TRACK_Y+(math.atan2(z-TRACK_Z,y-TRACK_Y)+math.pi/2)*TRACK_R
    elif y< -TRACK_Y:dist=4*TRACK_Y+math.pi*TRACK_R+(math.atan2(z-TRACK_Z,y+TRACK_Y)-math.pi/2)%math.tau*TRACK_R
    elif z<TRACK_Z:dist=y+TRACK_Y
    else:dist=2*TRACK_Y+math.pi*TRACK_R+TRACK_Y-y
    uv.data[li].uv=((v.x-s*1.45)/.66+.5,dist/L)
 return o

def duplicate(o,name,parent=None,col=damage):
 n=o.copy();n.data=o.data.copy();n.name=name;sc.collection.objects.link(n)
 world=o.matrix_world.copy();n.parent=parent;n.matrix_world=world;col.append(n);return n

def make_damage(hull,turret,gun,barrel):
 hd=empty('Hull_Damage',(0,0,0),col=damage);td=empty('Turret_Damage',tuple(turret.location),col=damage);bpy.context.view_layer.update()
 candidates=[o for o in healthy if o.name.startswith('Part_Skirt_')][:10]+[o for o in healthy if o.name.startswith(('Part_Fender_','Part_Turret_Armour_','Part_Turret_Bustle'))]
 twins={}
 for o in candidates:
  n=duplicate(o,o.name.replace('Part_','Dmg_',1),td if o.parent==turret else hd)
  # damage in local space, leaving the mount edge attached
  for v in n.data.vertices:
   z=v.co.z;f=max(0,min(1,(-z+.05)*3))
   v.co.x+=f*(.24*math.sin(v.co.y*5)+.22)*(1 if o.location.x>=0 else -1)
   v.co.z-=f*.18*(.6+.4*math.sin(v.co.y*9))
  # Visible torn slot through each plate using an irregular cutting volume.
  if 'Skirt' in o.name:
   bpy.ops.mesh.primitive_uv_sphere_add(segments=12,ring_count=8,radius=1,location=n.matrix_world.translation+Vector((0,.10,-.08)))
   cut=bpy.context.object;cut.scale=(.34,.105,.13);bpy.context.view_layer.objects.active=n
   mod=n.modifiers.new('Shell perforation','BOOLEAN');mod.operation='DIFFERENCE';mod.object=cut
   bpy.ops.object.modifier_apply(modifier=mod.name);bpy.data.objects.remove(cut,do_unlink=True)
  burnindex=len(n.data.materials);n.data.materials.append(M['Burnt'])
  for poly in n.data.polygons:
   if (poly.center.y-.1)**2+(poly.center.z+.08)**2<.22**2:poly.material_index=burnindex
  twins[o.name]=n.name
 # Eight armour-face scars, 4 impacts each, millimetres proud of the underlying face.
 for is_turret,parent in [(False,hd),(True,td)]:
  for face in ['Front','L','R','Rear']:
   g=Geo()
   if is_turret:
    positions={'Front':[(x,-1.833,1.74) for x in [-.88,-.59,.63,.92]],'L':[(1.479,y,1.74) for y in [-.7,-.05,.65,1.25]],'R':[(-1.479,y,1.74) for y in [-.7,-.05,.65,1.25]],'Rear':[(x,2.235,1.78) for x in [-.8,-.32,.30,.8]]}
   else:
    positions={'Front':[(x,-3.47805,1.23) for x in [-.85,-.35,.27,.80]],'L':[(1.457,y,1.18) for y in [-2.1,-.75,.8,2.25]],'R':[(-1.457,y,1.18) for y in [-2.1,-.75,.8,2.25]],'Rear':[(x,3.755,1.01) for x in [-.8,-.3,.3,.8]]}
   normal=Vector({'Front':(0,-.691,.723) if is_turret else (0,-.375,.927),'Rear':(0,1,0),'L':(1,0,0),'R':(-1,0,0)}[face]);u=normal.cross(Vector((0,0,1))).normalized();v=normal.cross(u).normalized()
   for k,p in enumerate(positions[face]):
    c=Vector(p)+normal*.001;r=.065 if k<3 else .10
    # irregular soot apron, raised bright petalled steel rim, black cavity
    vv=[c+normal*.001]+[c+u*math.cos(a)*r*(2.0+.25*math.sin(a*5+k))+v*math.sin(a)*r*1.55 for a in np.arange(0,math.tau,math.tau/18)]
    g.add(vv,[(0,i+1,(i+1)%18+1) for i in range(18)],'Burnt')
    g.cyl(c+normal*.002,r*.63,.002,'Burnt',normal,24)
    # rim alternates torn raised petal tips, its base follows armour
    rings=[]
    for rad,d in [(r*1.15,.0002),(r*.77,.003),(r*.62,.001)]:
     rings.append([c+(u*math.cos(a)+v*math.sin(a))*rad+normal*(d*(1+.35*math.cos(a*7))) for a in np.arange(0,math.tau,math.tau/28)])
    g.add(sum(rings,[]),[(j*28+i,j*28+(i+1)%28,(j+1)*28+(i+1)%28,(j+1)*28+i) for j in range(2) for i in range(28)],'Scars')

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 '145,222p' build_k2-tank.py; sed -n '410,540p' build_k2-tank.py" in /home/claude-agent/forge-build/forge-assets/jobs/k2-tank-v1
 succeeded in 0ms:
def octagon(xw,yfront,yrear,z,ch=.2):
 return [(-xw+ch,yfront,z),(xw-ch,yfront,z),(xw,yfront+ch,z),(xw,yrear-ch,z),(xw-ch,yrear,z),(-xw+ch,yrear,z),(-xw,yrear-ch,z),(-xw,yfront+ch,z)]

def build():
 for args in [('Paint','rusty_metal_02',(1,1,1),.8,.08,1024),('Rubber','rubberized_track',(.045,.05,.045),.88,0,512),('TrackSteel','rust_coarse_01',(.19,.17,.13),.66,.7,512),('Metal','rust_coarse_01',(.22,.24,.23),.5,.8,512),('Glass','metal_plate',(.014,.032,.05),.18,.55,256),('Lamps','metal_plate',(.82,.73,.51),.3,.1,256),('Interior','metal_plate',(.015,.018,.014),.98,0,256),('Burnt','rusty_metal_04',(.15,.125,.10),.94,.2,512),('Scars','rust_coarse_01',(.28,.25,.20),.68,.6,512)]:material(*args)
 # Low protected tub and broad glacis; hull is a complete closed solid.
 g=Geo();g.loft([octagon(1.23,-3.30,3.5,.39,.35),octagon(1.42,-3.75,3.75,1.12,.2),octagon(1.64,-2.86,3.68,1.48,.16)])
 # open crew well under hinged driver's hatch, dark cylinder interior
 g.ring((.62,-2.28,1.5),.25,.32,.06)
 # longitudinal sponson rails and suspension mounts, visible stripped
 for s in [-1,1]:
  g.box((s*1.43,0,1.18),(.15,6.85,.26))
  for y in [-2.4,-1.45,-.5,.45,1.4,2.35]:
   g.cyl((s*1.35,y,.61),.16,.22,'Metal',(1,0,0));g.line([(s*1.36,y,.68),(s*1.45,y+.22,.55)],.065,'Metal')
  bolts(g,[(s*1.53,y,1.33) for y in np.arange(-2.9,3.3,.4)])
 # rear exhaust bay inset / ribs
 g.box((0,3.735,1.0),(2.38,.022,.48),'Interior')
 for z in np.arange(.82,1.23,.045):g.box((0,3.73,z),(2.2,.035,.012),'Metal')
 for s in [-1,1]:
  g.ring((s*.94,-3.47,.77),.055,.095,.07,'Metal',(0,1,0),20)
  g.ring((s*.94,3.705,.66),.055,.095,.07,'Metal',(0,1,0),20)
 hull=g.object('Hull',bev=.015)
 # Turret low wedge: stepped plan and strongly sloped cheeks.
 tp=(0,-.3,1.53);g=Geo()
 g.ring(tp,.76,1.0,.10,'Metal')
 g.loft([octagon(1.45,-1.99,2.25,1.59,.43),octagon(1.49,-1.77,2.23,1.80,.48),octagon(1.24,-1.42,2.18,2.12,.40)])
 # Crew wells are bored through the roof after assembly.
 for x,y in [(-.6,.32),(.58,.12)]:g.ring((x,y,2.145),.245,.325,.045)
 turret=g.object('Turret',tp,bev=.012);bpy.context.view_layer.update()
 # modular cheek armour as independently detachable wedges, radar inset
 for s,label in [(1,'L'),(-1,'R')]:
  for j,(ya,yb) in enumerate([(-1.72,-.66),(-.64,.40),(.42,1.40)]):
   g=Geo();x0=1.26 if j==0 else 1.35;x1=1.51
   g.loft([[(s*x0,ya,1.65),(s*x1,ya+.1,1.65),(s*x1,yb,1.65),(s*x0,yb,1.65)],[(s*(x0-.10),ya+.22,2.06),(s*(x1-.10),ya+.24,2.00),(s*(x1-.10),yb,2.05),(s*(x0-.10),yb,2.10)]])
   bolts(g,[(s*(x1+.008),yy,zz) for yy in [ya+.28,yb-.12] for zz in [1.73,1.88]],(s,0,0),r=.019)
   g.object(f'Part_Turret_Armour_{label}{j+1}',(s*1.39,(ya+yb)/2,1.86),turret,.006)
  g=Geo();g.box((s*1.525,-.85,1.86),(.075,.60,.24));g.box((s*1.57,-.85,1.865),(.012,.52,.19),'Rubber');bolts(g,[(s*1.584,y,z) for y in [-1.08,-.62] for z in [1.80,1.93]],(s,0,0),r=.012)
  g.object(f'Part_Turret_Radar_{label}',(s*1.53,-.85,1.86),turret,.004)
 # mantlet trunnion, barrel starts exactly at exit
 gp=(0,-1.65,1.86);g=Geo();g.loft([octagon(.46,-2.18,-1.5,1.59,.09),octagon(.35,-2.12,-1.48,2.12,.08)])
 g.cyl((0,-2.18,1.86),.23,.22,'Paint',(0,1,0),48)
 gun=g.object('Gun',gp,turret,.012);bpy.context.view_layer.update()
 bp=(0,-2.29,1.86);g=Geo()
 # concentric tube, thermal sleeve, fume extractor and restrained collars
 for ya,yb,r in [(-2.29,-2.82,.157),(-2.82,-3.20,.14),(-3.20,-3.68,.205),(-3.68,-4.02,.137),(-4.02,-6.78,.105),(-6.78,-7.05,.115)]:
  g.ring((0,(ya+yb)/2,1.86),.061,r,abs(yb-ya),'Paint' if yb>-6.9 else 'Metal',(0,1,0),48)
 for y in [-2.37,-2.74,-3.18,-3.68,-3.86,-4.03,-6.77]:g.ring((0,y,1.86),.11,.151 if y>-4 else .12,.045,'Paint',(0,1,0),48)
 for i in range(14):
  a=i*math.tau/14;g.line([(math.cos(a)*.16,-2.4,1.86+math.sin(a)*.16),(math.cos(a)*.16,-2.69,1.86+math.sin(a)*.16)],.006,'Paint',6)
 g.box((0,-6.90,2.012),(.105,.17,.085),'Paint');g.box((0,-6.987,2.012),(.060,.007,.042),'Glass')
 barrel=g.object('Barrel',bp,gun,.003);bpy.context.view_layer.update();empty('Muzzle',(0,-7.05,1.86),barrel)
 # rolling gear, six equal road wheels each side + raised end wheels + return rollers
 for s,label in [(1,'L'),(-1,'R')]:
  entries=[(-3.05,.82,.43,'idler')]+[(y,.52,.43,'road') for y in [-2.4,-1.45,-.50,.45,1.40,2.35]]+[(3.08,.85,.44,'sprocket')]+[(y,1.16,.18,'return') for y in [-1.9,-.1,1.75]]
  entries.sort(key=lambda q:q[0])
  for j,(y,z,r,kind) in enumerate(entries):
   c=(s*1.45,y,z);g=Geo()
   g.cyl(c,r,.39,'Rubber' if kind=='road' else 'TrackSteel',(1,0,0),48)
   for side in [-1,1]:
    x=s*1.45+side*.207
    g.ring((x,y,z),r*.76,r*.92,.040,'Paint',(1,0,0),48)
    g.cyl((x-side*.035,y,z),r*.77,.022,'Paint',(1,0,0),48)
    g.ring((x-side*.012,y,z),r*.62,r*.76,.035,'Paint',(1,0,0),48)
    g.ring((x+side*.03,y,z),r*.20,r*.26,.022,'Metal',(1,0,0),32)
    g.cyl((x+side*.037,y,z),r*.16,.038,'Paint',(1,0,0),24)
    bolts(g,[(x+side*.037,y+math.cos(a)*r*.42,z+math.sin(a)*r*.42) for a in np.arange(0,math.tau,math.tau/8)],(1,0,0),r=.017 if r>.3 else .009)
   if kind=='sprocket':
    g=Geo();g.cyl(c,.14,.46,'Metal',(1,0,0),32)
    for xx in [s*1.45-.19,s*1.45+.19]:
     g.ring((xx,y,z),.30,.405,.055,'TrackSteel',(1,0,0),48)
     g.cyl((xx,y,z),.17,.07,'Paint',(1,0,0),32)
     for aa in np.arange(0,math.tau,math.tau/8):
      g.line([(xx,y+.15*math.cos(aa),z+.15*math.sin(aa)),(xx,y+.34*math.cos(aa),z+.34*math.sin(aa))],.043,'Paint',8)
      bolts(g,[(xx+s*.04,y+.11*math.cos(aa),z+.11*math.sin(aa))],(1,0,0),r=.014)
    for a in np.arange(0,math.tau,math.tau/14):g.box((s*1.45,y+math.cos(a)*r,z+math.sin(a)*r),(.40,.09,.09),'TrackSteel',Matrix.Rotation(a,3,'X'))
   wh=g.object(f'Wheel_{label}{j+1}',c,bev=.003)
   wh['wheel_role']=kind;wh['side']=label
   for p in wh.data.polygons:
    g.add(sum(rings,[]),[(j*28+i,j*28+(i+1)%28,(j+1)*28+(i+1)%28,(j+1)*28+i) for j in range(2) for i in range(28)],'Scars')
    if k<3:g.line([c+u*.07,c+u*.17+v*.035,c+u*.24+v*.045],.008,'Scars',6)
   g.object('Scar_'+('Turret' if is_turret else 'Hull')+'_'+face,tuple(parent.location),parent,0,damage)
 make_track(1,'L',True,hd);make_track(-1,'R',True,hd)
 # gun damage assembled from original mantlet and a bent, open-ended barrel
 bg=duplicate(gun,'Gun_Broken',td);bpy.context.view_layer.update()
 bb=duplicate(barrel,'_burstbarrel',bg)
 for v in bb.data.vertices:
  yy=v.co.y
  if yy< -1.8:v.co.z-=(-yy-1.8)*.21
  if yy< -2.5:v.co.x+=.10*math.sin((-yy-2.5)*1.3)
 # join barrel into mantlet preserving Gun origin
 join_into(bg,[bb]);damage.remove(bb) if bb in damage else None
 # wreck copies from healthy, preserving all relative mesh alignments
 wh_pieces=[];wt_pieces=[]
 skip_parts={f'Part_Skirt_{s}{i}' for s in ['L','R'] for i in [1,3,5,7]}
 skip_parts.update(['Part_Fender_FL','Part_Fender_RR','Part_Turret_BustleBins','Part_Turret_Armour_L1'])
 for o in list(healthy):
  if o.type!='MESH' or o.name in skip_parts:continue
  is_t=(o==turret or o.parent==turret or o==gun or o==barrel)
  source=next(d for d in damage if d.name=='Track_L_Broken') if o.name=='Track_L' else o
  n=duplicate(source,'_wreck_'+o.name,None,col=[])
  n.data.materials.clear();n.data.materials.append(M['Burnt'])
  for p in n.data.polygons:p.material_index=0
  if o.name.startswith('Wheel_'):
   n.location.z-=.05
   if o.get('wheel_role')=='road':
    for v in n.data.vertices:
     rr=math.hypot(v.co.y,v.co.z)
     if rr>.407:v.co.y*=.395/rr;v.co.z*=.395/rr
  if o.name.startswith('Hatch_'):n.rotation_euler.x=math.radians(-72)
  if o in [gun,barrel]:
   pv=gun.matrix_world.translation;rot=Matrix.Translation(pv)@Matrix.Rotation(math.radians(14),4,'X')@Matrix.Translation(-pv);n.matrix_world=rot@n.matrix_world
  if o.name.startswith('Track_'):
   for v in n.data.vertices:
    if v.co.z>1:v.co.z-=.22*max(0,1-(v.co.y/3)**2)
  if 'EngineGrille' in o.name:
   for v in n.data.vertices:v.co.z+=.28*max(0,1-abs(v.co.y)*1.5)
  if o==hull:
   bpy.ops.mesh.primitive_cylinder_add(vertices=64,radius=.98,depth=1.3,location=(0,-.3,1.4));cut=bpy.context.object
   bpy.context.view_layer.objects.active=n;mod=n.modifiers.new('Open burnt turret well','BOOLEAN');mod.operation='DIFFERENCE';mod.object=cut;bpy.ops.object.modifier_apply(modifier=mod.name);bpy.data.objects.remove(cut,do_unlink=True)
   bpy.ops.mesh.primitive_cube_add(size=1,location=(0,2.92,1.4));cut=bpy.context.object;cut.scale=(1.55,.82,.7)
   bpy.context.view_layer.objects.active=n;mod=n.modifiers.new('Ruptured engine bay','BOOLEAN');mod.operation='DIFFERENCE';mod.object=cut;bpy.ops.object.modifier_apply(modifier=mod.name);bpy.data.objects.remove(cut,do_unlink=True)
  (wt_pieces if is_t else wh_pieces).append(n)
 # well floor and scorched seating, ring and underside basket stub
 g=Geo();g.box((0,2.92,.93),(1.56,.85,.35),'Burnt');g.cyl((0,-.3,.56),.95,.08,'Burnt',n=48);g.ring((0,-.3,1.43),.94,1.04,.12,'Burnt',n=64)
 for x in [-.4,.4]:g.box((x,-.3,.8),(.32,.45,.36),'Burnt')
 wh_pieces.append(g.object('_well',bev=.004,collection=[]))
 g=Geo();g.ring((0,-.3,1.48),.74,.95,.18,'Burnt',n=64);g.cyl((0,-.3,1.15),.70,.12,'Burnt',n=48)
 for a in np.arange(0,math.tau,math.tau/8):g.line([(.7*math.cos(a),-.3+.7*math.sin(a),1.16),(.83*math.cos(a),-.3+.83*math.sin(a),1.5)],.036,'Burnt')
 wt_pieces.append(g.object('_basket',bev=.003,collection=[]))
 wh=wh_pieces[0];join_into(wh,wh_pieces[1:]);wh.name='Wreck_Hull';origin(wh,(0,0,0));damage.append(wh)
 wt=wt_pieces[0];join_into(wt,wt_pieces[1:]);wt.name='Wreck_Turret';origin(wt,tuple(turret.location));damage.append(wt)
 for o in [wh,wt]:
  bpy.context.view_layer.objects.active=o;mod=o.modifiers.new('Wreck mesh budget','DECIMATE');mod.ratio=.40;bpy.ops.object.modifier_apply(modifier=mod.name)
 return twins

def origin(o,p):
 world=o.matrix_world.copy();dest=Matrix.Translation(p);o.data.transform(dest.inverted()@world);o.matrix_world=dest

def join_into(base,others):
 bpy.ops.object.select_all(action='DESELECT');base.select_set(True)
 for o in others:o.select_set(True)
 bpy.context.view_layer.objects.active=base;bpy.ops.object.join();base.select_set(False)

def budget(objects,target):
 total=sum(len(p.vertices)-2 for o in objects if o.type=='MESH' for p in o.data.polygons)
 if total>target:
  ratio=target/total*.985
  for o in objects:
   if o.type!='MESH':continue
   for slot in o.material_slots:
    if slot.material is None:slot.material=M['Paint']
   bpy.context.view_layer.objects.active=o
   mod=o.modifiers.new('Game geometry budget','DECIMATE');mod.ratio=ratio
   bpy.ops.object.modifier_apply(modifier=mod.name)
 for o in objects:
  if o.type!='MESH':continue
  bm=bmesh.new();bm.from_mesh(o.data);bmesh.ops.triangulate(bm,faces=list(bm.faces))
  bad=[f for f in bm.faces if f.calc_area()<1e-10]
  if bad:bmesh.ops.delete(bm,geom=bad,context='FACES')
  bm.to_mesh(o.data);bm.free();o.data.update()
 print('BUDGET',total,'->',metrics(objects)['triangles'],flush=True)

def export(objects,filename):
 bpy.ops.object.select_all(action='DESELECT')
 for o in objects:
  if o.name in bpy.data.objects:o.hide_set(False);o.hide_viewport=False;o.hide_render=False;o.select_set(True)
 bpy.ops.export_scene.gltf(filepath=str(ROOT/filename),export_format='GLB',use_selection=True,export_yup=True,export_apply=False,export_texcoords=True,export_normals=True,export_materials='EXPORT',export_extras=True)
 # Explicit glTF paint factor, independent of exporter mix-node recognition.
 p=ROOT/filename;data=p.read_bytes();jlen=struct.unpack_from('<I',data,12)[0];doc=json.loads(data[20:20+jlen]);blob=data[20+jlen:]
 for m in doc.get('materials',[]):
  if m['name']=='Paint':m['pbrMetallicRoughness']['baseColorFactor']=PAINTS[0][1]+[1]
 js=json.dumps(doc,separators=(',',':')).encode();js+=b' '*((-len(js))%4)
 p.write_bytes(struct.pack('<4sII',b'glTF',2,20+len(js)+len(blob))+struct.pack('<I4s',len(js),b'JSON')+js+blob)
 print('EXPORTED',filename,p.stat().st_size,flush=True)

def metrics(objects):
 bpy.context.view_layer.update();pts=[o.matrix_world@Vector(c) for o in objects if o.type=='MESH' for c in o.bound_box]
 cv=lambda p:[round(p.x,5),round(p.z,5),round(-p.y,5)]
 return {'nodes':[{'name':o.name,'parent':o.parent.name if o.parent else None,'position':cv(o.matrix_world.translation)} for o in objects], 'bounds':{'min':[min(cv(p)[i] for p in pts) for i in range(3)],'max':[max(cv(p)[i] for p in pts) for i in range(3)]},'triangles':sum(len(p.vertices)-2 for o in objects if o.type=='MESH' for p in o.data.polygons)}

def studio():
 # new render stage; never exported
 mat=bpy.data.materials.new('Studio');mat.diffuse_color=(.28,.30,.32,1);mat.use_nodes=True;mat.node_tree.nodes.get('Principled BSDF').inputs['Base Color'].default_value=(.28,.30,.32,1);mat.node_tree.nodes.get('Principled BSDF').inputs['Roughness'].default_value=.86
 bpy.ops.mesh.primitive_plane_add(size=200);floor=bpy.context.object;floor.name='_StudioFloor';floor.location.z=-.015;floor.data.materials.append(mat)
 sc.world.use_nodes=True;sc.world.node_tree.nodes.get('Background').inputs[0].default_value=(.55,.63,.74,1);sc.world.node_tree.nodes.get('Background').inputs[1].default_value=.55
 for name,loc,energy,size in [('Key',(2,-6,10),1900,7),('Fill',(-7,-1,5),1100,6),('Rim',(2,6,8),2100,5)]:
  data=bpy.data.lights.new(name,'AREA');data.energy=energy;data.shape='DISK';data.size=size;o=bpy.data.objects.new(name,data);sc.collection.objects.link(o);o.location=loc;o.rotation_euler=(Vector((0,0,1))-o.location).to_track_quat('-Z','Y').to_euler()
 data=bpy.data.cameras.new('Camera');cam=bpy.data.objects.new('Camera',data);sc.collection.objects.link(cam);sc.camera=cam;data.type='ORTHO';data.ortho_scale=12.8
 camera((10,-14,6.0),(0,-1.05,1.05))
 return floor

def camera(loc,target,scale=None):
 cam=sc.camera;cam.location=loc;cam.rotation_euler=(Vector(target)-cam.location).to_track_quat('-Z','Y').to_euler()
 if scale:cam.data.ortho_scale=scale

def render(name,w=1920,h=1080,samples=32):
 sc.render.resolution_x=w;sc.render.resolution_y=h;sc.render.resolution_percentage=100;sc.cycles.samples=samples;sc.render.filepath=str(ROOT/name);bpy.ops.render.render(write_still=True);print('RENDER',name,flush=True)

def composite(files,name):
 arrays=[]
 for p in files:
  im=bpy.data.images.load(str(ROOT/p),check_existing=False);a=np.array(im.pixels[:],dtype=np.float32).reshape(im.size[1],im.size[0],4);arrays.append(a);bpy.data.images.remove(im)
 h,w,_=arrays[0].shape;out=np.concatenate([np.concatenate(arrays[3:],axis=1),np.concatenate(arrays[:3],axis=1)],axis=0)
 im=bpy.data.images.new(name,width=w*3,height=h*2);im.pixels.foreach_set(out.ravel());im.filepath_raw=str(ROOT/name);im.file_format='PNG';im.save()


def proof():
 # Required proof is strictly a fresh-scene import of both delivered binary files.
 bpy.ops.object.select_all(action='SELECT');bpy.ops.object.delete(use_global=False)

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/bin/bash -lc "ssh gex44 'tail -5 /root/fal-author/k2-tank-v1/build.log'" in /home/claude-agent/forge-build/forge-assets/jobs/k2-tank-v1
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/bin/bash -lc "ssh gex44 'tail -4 /root/fal-author/k2-tank-v1/build.log; ps -eo pid,etime,args | grep blender.real | head -8'" in /home/claude-agent/forge-build/forge-assets/jobs/k2-tank-v1
 succeeded in 725ms:
1417686       09:40 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/type99-tank-v1/build_type99-tank.py -- --rebake
1421110       09:02 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/k2-tank-v1/build_k2-tank.py
1434427       06:08 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/t55-tank-v1/build_t55-tank.py
1458441       01:36 python3 /opt/gpu-gate/gpu_gate.py --name blender-ruth --need-mib 5000 --priority build --poll 2 --max-concurrent 3 --timeout 1200 -- /root/blender-spike/blender-5.2.0-linux-x64/blender.real -b /root/ruth-teaser-20261011/director/shots.blend --python-exit-code 1 --python /root/ruth-teaser-20261011/director/audit_director.py --python /root/ruth-teaser-20261011/director/render_director.py -- probe 1 70 166 222 286 389 446 490 550 606 702 780 874 900
1462843       00:56 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/chi-ha-tank-v1/build_chi-ha-tank.py
1463715       00:48 /root/blender-spike/blender-5.2.0-linux-x64/blender.real -b --python-exit-code 1 --python /root/fal-author/type99-tank-v1/build_type99-tank.py -- --rebake
1464469       00:41 /root/blender-spike/blender-5.2.0-linux-x64/blender.real -b --python-exit-code 1 --python /root/fal-author/t55-tank-v1/build_t55-tank.py
1466692       00:23 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/a7v-tank-v1/build_a7v-tank.py

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/bin/bash -lc "date -u '+%H:%M:%S'; ssh gex44 'wc -c /root/fal-author/k2-tank-v1/build.log'" in /home/claude-agent/forge-build/forge-assets/jobs/k2-tank-v1
 succeeded in 542ms:
16:48:53
0 /root/fal-author/k2-tank-v1/build.log

codex
The earlier proof exposed two visual problems: the surface normal pattern was too coarse, and the burnt wreck read like brown paint. Both are corrected in the queued build. I’m also checking that removing equipment leaves complete armour and that damaged parts retain their matching pivots.
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/bin/bash -lc 'cat /tmp/k2-validate.py' in /home/claude-agent/forge-build/forge-assets/jobs/k2-tank-v1
 succeeded in 0ms:
import json,struct,sys,io
from pathlib import Path
import numpy as np
from PIL import Image

def read(p):
 b=Path(p).read_bytes();n=struct.unpack_from('<I',b,12)[0];d=json.loads(b[20:20+n]);return d,b[28+n:]
def acc(d,b,i):
 a=d['accessors'][i];v=d['bufferViews'][a['bufferView']];dt={5126:'<f4',5125:'<u4',5123:'<u2',5121:'u1'}[a['componentType']];n={'SCALAR':1,'VEC2':2,'VEC3':3,'VEC4':4}[a['type']];start=v.get('byteOffset',0)+a.get('byteOffset',0)
 return np.ndarray((a['count'],n),dtype=dt,buffer=b,offset=start,strides=(v.get('byteStride',np.dtype(dt).itemsize*n),np.dtype(dt).itemsize)).copy()
def matrix(n):
 if 'matrix' in n:return np.array(n['matrix']).reshape(4,4).T
 x,y,z,w=n.get('rotation',[0,0,0,1]);r=np.array([[1-2*y*y-2*z*z,2*x*y-2*z*w,2*x*z+2*y*w],[2*x*y+2*z*w,1-2*x*x-2*z*z,2*y*z-2*x*w],[2*x*z-2*y*w,2*y*z+2*x*w,1-2*x*x-2*y*y]])
 m=np.eye(4);m[:3,:3]=r@np.diag(n.get('scale',[1,1,1]));m[:3,3]=n.get('translation',[0,0,0]);return m

def run(path):
 d,b=read(path);ns=d['nodes'];parents={c:i for i,n in enumerate(ns) for c in n.get('children',[])};world={}
 def wm(i):
  if i not in world:world[i]=(wm(parents[i]) if i in parents else np.eye(4))@matrix(ns[i])
  return world[i]
 lo=np.array([np.inf]*3);hi=-lo;tri=0;bad=0;nonfinite=0
 for i,n in enumerate(ns):
  if 'mesh' not in n:continue
  for p in d['meshes'][n['mesh']]['primitives']:
   verts=acc(d,b,p['attributes']['POSITION']);vv=np.c_[verts,np.ones(len(verts))]@wm(i).T;lo=np.minimum(lo,vv[:,:3].min(0));hi=np.maximum(hi,vv[:,:3].max(0))
   ids=acc(d,b,p['indices']).ravel().reshape(-1,3);tri+=len(ids);area=np.linalg.norm(np.cross(verts[ids[:,1]]-verts[ids[:,0]],verts[ids[:,2]]-verts[ids[:,0]]),axis=1);bad+=int((area<1e-12).sum());nonfinite+=int((~np.isfinite(verts)).sum())
 ims=[]
 for im in d.get('images',[]):
  v=d['bufferViews'][im['bufferView']];a=Image.open(io.BytesIO(b[v.get('byteOffset',0):v.get('byteOffset',0)+v['byteLength']]))
  ims.append((im.get('name'),a.size));assert max(a.size)<=1024
  if 'orm' in im.get('name','').lower():assert max(a.size)<=512
 assert bad==0,('degenerate',bad)
 assert nonfinite==0
 names={n['name']:i for i,n in enumerate(ns)}
 paints=[m for m in d['materials'] if m['name']=='Paint'];assert len(paints)==1
 assert paints[0]['pbrMetallicRoughness']['baseColorFactor']==[.1,.13,.08,1]
 assert 'baseColorTexture' in paints[0]['pbrMetallicRoughness']
 assert not d.get('cameras') and not any('KHR_lights_punctual' in n.get('extensions',{}) for n in ns)
 roots=[ns[i]['name'] for i in d['scenes'][d.get('scene',0)]['nodes']]
 print(Path(path).name,json.dumps({'bytes':Path(path).stat().st_size,'triangles':tri,'degenerate':bad,'nodes':len(ns),'bounds_min':lo.tolist(),'bounds_max':hi.tolist(),'dimensions':(hi-lo).tolist(),'materials':[m['name'] for m in d['materials']],'images':ims,'roots':roots},indent=2))
 return d,names,world,roots,tri,hi-lo,lo
A,an,aw,ar,at,dim,lo=run(sys.argv[1]);B,bn,bw,br,bt,_,_=run(sys.argv[2])
assert 80000<=at<=140000 and bt<=110000
assert Path(sys.argv[1]).stat().st_size<=12000000
assert np.allclose(dim,[3.6,2.4,10.8],atol=.015),(dim)
assert abs(lo[1])<.0001
assert set(br)=={'Hull_Damage','Turret_Damage','Wreck_Hull','Wreck_Turret'}
for name in ['Hull','Turret','Gun','Barrel','Muzzle','MG','Track_L','Track_R','Hatch_Commander','Hatch_Driver','Hatch_Loader','Seat_Commander','Seat_Driver','Exhaust','Light_Head_L','Light_Head_R','Fx_Engine','Fx_Ammo','Fx_Hatch']:assert name in an,name
assert sum(n.startswith('Part_') for n in an)>=14
for n,i in bn.items():
 if n.startswith('Dmg_'):
  h='Part_'+n[4:];assert h in an;assert np.allclose(bw.get(i,np.eye(4))[:3,3],aw[an[h]][:3,3],atol=.0001),(n,'pivot mismatch')
assert len([n for n in bn if n.startswith('Scar_')])==8
print('CONTRACT PASS')

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/bin/bash -lc "ssh gex44 'tail -3 /root/fal-author/k2-tank-v1/build.log'" in /home/claude-agent/forge-build/forge-assets/jobs/k2-tank-v1
 succeeded in 568ms:
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/bin/bash -lc "sed -n '540,610p' build_k2-tank.py; ~/.claude/coord/coord status" in /home/claude-agent/forge-build/forge-assets/jobs/k2-tank-v1
 succeeded in 0ms:
 bpy.ops.object.select_all(action='SELECT');bpy.ops.object.delete(use_global=False)
 bpy.ops.import_scene.gltf(filepath=str(ROOT/'k2-tank.glb'));a=list(sc.objects)
 bpy.ops.import_scene.gltf(filepath=str(ROOT/'k2-tank-damage.glb'));b=[o for o in sc.objects if o not in a]
 studio();names={o.name:o for o in a+b}
 def visibility(oo,show):
  for o in oo:o.hide_render=not show
 def subtree(o):return [o]+list(o.children_recursive)
 def state_reset():visibility(a,True);visibility(b,False)
 files=[]
 for i in range(6):
  state_reset()
  if i==1:
   for o in b:
    if o.name.startswith('Scar_'):o.hide_render=False
   for key in ['Skirt_L1','Skirt_L2','Skirt_L3','Skirt_R1','Fender_FL','Turret_Armour_L1']:
    if 'Part_'+key in names:names['Part_'+key].hide_render=True
    if 'Dmg_'+key in names:names['Dmg_'+key].hide_render=False
  if i==2:
   for o in a:
    if o.name.startswith('Part_'):o.hide_render=True
  if i==3:
   names['Track_L'].hide_render=True;names['Track_L_Broken'].hide_render=False
   visibility(subtree(names['Gun']),False);names['Gun_Broken'].hide_render=False
  if i>=4:
   visibility(a,False);names['Wreck_Hull'].hide_render=False;names['Wreck_Turret'].hide_render=False
  if i==5:
   names['Wreck_Turret'].location=(2.8,.75,.78);names['Wreck_Turret'].rotation_euler=(.15,math.radians(125),.32)
  render(f'_state{i}.png',800,450,16);files.append(f'_state{i}.png')
 composite(files,'states.png')
 # Restore frame for proof of six recolour factors.
 state_reset();camera((10,-14,6),(0,-1.05,1.05),12.8)
 paints=[m for m in bpy.data.materials if m.name=='Paint' or m.name.startswith('Paint.')]
 files=[]
 for i,(name,c) in enumerate(PAINTS):
  for mat in paints:
   bs=next((n for n in mat.node_tree.nodes if n.type=='BSDF_PRINCIPLED'),None)
   if not bs:continue
   # Imported glTF may express texture*factor through a multiply node.
   socket=bs.inputs['Base Color']
   if socket.is_linked:
    node=socket.links[0].from_node
    if node.type=='MIX':
     for s in node.inputs:
      if s.type=='RGBA' and not s.is_linked:s.default_value=tuple(c)+(1,)
    elif node.type=='MIX_RGB':
     for s in node.inputs[1:]:
      if not s.is_linked:s.default_value=tuple(c)+(1,)
    else:
     nt=mat.node_tree;old=socket.links[0].from_socket;mix=nt.nodes.new('ShaderNodeMixRGB');mix.blend_type='MULTIPLY';mix.inputs[0].default_value=1;mix.inputs[2].default_value=tuple(c)+(1,);nt.links.new(old,mix.inputs[1]);nt.links.new(mix.outputs[0],socket)
   else:socket.default_value=tuple(c)+(1,)
  render(f'_paint{i}.png',800,450,16);files.append(f'_paint{i}.png')
 composite(files,'paints.png')
 # source rotation checks from exported nodes; all attached meshes follow their pivots
 state_reset()
 for mat in paints:
  for n in mat.node_tree.nodes:
   if n.type=='MIX_RGB':
    for s in n.inputs[1:]:
     if not s.is_linked:s.default_value=tuple(PAINTS[0][1])+(1,)
 for o in a:
  if o.name=='Turret':o.rotation_euler.z+=math.radians(30)
  elif o.name in ['Gun','MG'] or o.name.startswith(('Wheel_','Hatch_')):o.rotation_euler.x+=math.radians(30)
 render('pivots.png',1280,720,16)
 print('PROOF_COMPLETE',flush=True)

if '--proof-only' in sys.argv:
 proof()
else:
 hull,turret,gun,barrel=build()
 budget(healthy,126000)
 export(healthy,'k2-tank.glb');ha=metrics(healthy)
=== sessions ===
  [alive] 1153004:1717757612  Claude Code session  ()
  [alive] 1208112:1658530799  Claude Code session  ()
  [alive] 1335028:1631140493  Claude Code session  ()
  [alive] 1558502:1617678053  Claude Code session  ()
  [alive] 1561985:1718503986  Claude Code session  ()
  [alive] 162504:1727381278  Claude Code session  ()
  [alive] 18278:1714399856  Claude Code session  ()
  [alive] 2055176:1719266109  Claude Code session  ()
  [alive] 223906:1684030292  Claude Code session  ()
  [alive] 2314503:1565741435  Claude Code session  ()
  [alive] 3169652:1651719239  Claude Code session  ()
  [alive] 4013783:1625028676  Claude Code session  ()
  [alive] 4056350:1625091145  Claude Code session  ()
  [alive] 4146838:1714203358  Claude Code session  ()
  [alive] 4153283:1714217907  Claude Code session  ()
  [alive] 423987:1627206825  Claude Code session  ()
  [alive] 440828:1627296141  Claude Code session  ()
  [alive] 89945:1625518888  Claude Code session  ()
  [alive] claude-sonnet-2728807:1441793758  Claude Code session  ()
  [alive] claude-sonnet-4001920:1625012046  Claude Code session  ()
  [alive] claude-sonnet-4022476:1625038977  Claude Code session  ()
  [alive] codex-gpt-5.6-sol-3529165:1409276146  You are working in a git worktree of the forge-monorepo, branched from p2/codex-adapter. This repo is a WORKBENCH MIRROR of the real ax42 Engine host tree — you will NOT deploy, SSH anywhere, or touch  ()
  [alive] codex-gpt-6-astra-3677556:1557057246  You are the Astra AUTHOR seat of Forge's designated composite 3D recipe (V4.6 freezes Astra pen + DeepSeek exact-edit tail; NOT Engine tenant composite-auto). Build original convincing first-person ta  ()
  [alive] codex-gpt-6-astra-3884657:1557574497  You are the Astra author seat of user-requested COMPOSITE 3D lane. Build ONE Halcyon first-person hands proof with the supplied Cransh authored FBX. Work in your isolated worktree; do not deploy. No s  ()
  [alive] codex:gpt-5.6-luna:3296135:1788529417  Run 'sleep 60' in the shell then reply with the word DONE.  ()
  [alive] deepseek-deepseek-flash-1604500:1468734044  Claude Code session  ()
  [alive] deepseek-deepseek-flash-2206615:1518663408  Claude Code session  ()
  [alive] deepseek-deepseek-flash-3478594:1476172879  Claude Code session  ()
  [alive] deepseek-deepseek-flash-3574350:1476435900  Claude Code session  ()
  [alive] gemini-proxy-forge-build-gemini-38flash-3153991:1506259864  You are the pass 2 adversarial reviewer of an engineering blueprint (revised after pass 1). Context: OhMyUnicorn Forge builds and deploys web apps for regular users from a brief through an AI pipeline  ()
  [alive] gemini-proxy-forge-build-gemini-38flash-3168945:1506321383  You are the pass 2 adversarial reviewer of an engineering blueprint (revised after pass 1). Context: OhMyUnicorn Forge builds and deploys web apps for regular users from a brief through an AI pipeline  ()
  [alive] unreal-gpt-6-astra-2421694:1608656741  You are worker WM on MÖBELKRIG, Forge's flat-pack furniture store FPS (three.js, no build step). The end boss STORKUND is a 9 m furniture golem. In your worktree read briefs-rework/WM-model.md and do   ()
  [alive] unreal-gpt-6-astra-686529:1728886503  # W-MONSTER: a terrifying creature model for "La Casa 13" (Astra, Blender)

You are worker W-MONSTER (GPT-6 Astra). You direct Blender. Stop and report by **19:05 CET** (read the clock with
`TZ=Europe  ()
  [alive] unreal-gpt-6-astra-720574:1728969234  You are W-DIRECTOR (phase 1) of the RUTH teaser film. In your worktree read briefs/COMMON.md and then briefs/W-DIRECTOR-P1.md and do exactly what they say. Hard stop 19:10 CET (read the clock with TZ=  ()
  [alive] unreal-gpt-6.1-sol-2862176:1708978510  You are W-GRASS7. Repo forge-assets (your worktree). The settlement renderer (omg/kit/building/settlement-render.mjs, the
page browse/settlement.html, its copy browse/building/) draws villages, towns   ()
=== claims ===
  gex44:/root/casa13-monster/ [exclusive] by unreal-gpt-6-astra-686529:1728886503 held 2135s exp 1799s :: # W-MONSTER: a terrifying creature model for "La Casa 13" (Astra, Blender)

You are worker W-MONSTER (GPT-6 Astra). You direct Blender. Stop and report by **19:05 CET** (read the clock with
`TZ=Europe
  gex44:/root/fal-author/a7v-tank-v1/ [exclusive] by 704042:1728923997 held 1760s exp 934s :: 
  gex44:/root/fal-author/char-b1-tank-v1/ [exclusive] by 711738:1728945550 held 1537s exp 3862s :: 
  gex44:/root/fal-author/chi-ha-tank-v1/ [exclusive] by 722442:1728973623 held 1275s exp 1399s :: 
  gex44:/root/fal-author/churchill-tank-v1/ [exclusive] by 682570:1728882986 held 2156s exp 824s :: 
  gex44:/root/fal-author/k2-tank-v1/ [exclusive] by 719957:1728967685 held 1325s exp 474s :: 
  gex44:/root/fal-author/t14-armata-tank-v1/ [exclusive] by 728651:1728992275 held 1077s exp 722s :: 
  gex44:/root/fal-author/t55-tank-v1/ [exclusive] by 677311:1728875904 held 2234s exp 3165s :: 
  gex44:/root/fal-author/type99-tank-v1/ [exclusive] by 690621:1728889436 held 2082s exp 5117s :: 
  gex44:/root/ruth-teaser-20261011/director/ [exclusive] by unreal-gpt-6-astra-720574:1728969234 held 1309s exp 1784s :: You are W-DIRECTOR (phase 1) of the RUTH teaser film. In your worktree read briefs/COMMON.md and then briefs/W-DIRECTOR-P1.md and do exactly what they say. Hard stop 19:10 CET (read the clock with TZ=
  local:/home/claude-agent/forge-build/casa13-horror-20261011/game/.forge-worktrees/1791735190-63493d/ [exclusive] by unreal-gpt-6-astra-686529:1728886503 held 2163s exp 1799s :: # W-MONSTER: a terrifying creature model for "La Casa 13" (Astra, Blender)

You are worker W-MONSTER (GPT-6 Astra). You direct Blender. Stop and report by **19:05 CET** (read the clock with
`TZ=Europe owner=1791735190-63493d
  local:/home/claude-agent/forge-build/casa13-horror-20261011/monster-out/ [exclusive] by unreal-gpt-6-astra-686529:1728886503 held 2135s exp 1799s :: # W-MONSTER: a terrifying creature model for "La Casa 13" (Astra, Blender)

You are worker W-MONSTER (GPT-6 Astra). You direct Blender. Stop and report by **19:05 CET** (read the clock with
`TZ=Europe
  local:/home/claude-agent/forge-build/forge-assets/jobs/a7v-tank-v1/ [exclusive] by 704042:1728923997 held 1760s exp 934s :: 
  local:/home/claude-agent/forge-build/forge-assets/jobs/char-b1-tank-v1/ [exclusive] by 711738:1728945550 held 1537s exp 3862s :: 
  local:/home/claude-agent/forge-build/forge-assets/jobs/chi-ha-tank-v1/ [exclusive] by 722442:1728973623 held 1275s exp 1399s :: 
  local:/home/claude-agent/forge-build/forge-assets/jobs/churchill-tank-v1/ [exclusive] by 682570:1728882986 held 2156s exp 824s :: 
  local:/home/claude-agent/forge-build/forge-assets/jobs/k2-tank-v1/ [exclusive] by 719957:1728967685 held 1325s exp 474s :: 
  local:/home/claude-agent/forge-build/forge-assets/jobs/t14-armata-tank-v1/ [exclusive] by 728651:1728992275 held 1077s exp 722s :: 
  local:/home/claude-agent/forge-build/forge-assets/jobs/t55-tank-v1/ [exclusive] by 677311:1728875904 held 2234s exp 3165s :: 
  local:/home/claude-agent/forge-build/forge-assets/jobs/type99-tank-v1/ [exclusive] by 690621:1728889436 held 2082s exp 5117s :: 
  local:/home/claude-agent/forge-build/ruth-teaser-20261011/.forge-worktrees/1791736017-be5ed7/ [exclusive] by unreal-gpt-6-astra-720574:1728969234 held 1336s exp 1784s :: You are W-DIRECTOR (phase 1) of the RUTH teaser film. In your worktree read briefs/COMMON.md and then briefs/W-DIRECTOR-P1.md and do exactly what they say. Hard stop 19:10 CET (read the clock with TZ= owner=1791736017-be5ed7
  local:/home/claude-agent/forge-build/ruth-teaser-20261011/director-out/ [exclusive] by unreal-gpt-6-astra-720574:1728969234 held 1309s exp 1784s :: You are W-DIRECTOR (phase 1) of the RUTH teaser film. In your worktree read briefs/COMMON.md and then briefs/W-DIRECTOR-P1.md and do exactly what they say. Hard stop 19:10 CET (read the clock with TZ=
  local:/tmp/churchill-runtime/ [exclusive] by 682570:1728882986 held 763s exp 1036s :: 
=== recent milestones ===
  16:48 APOLOGY + ACTION for the session running tools/tanks roster_probe.py (gpu.sh on port 8977, local RUN tanks-gpu-773062): at ~18:50 CET my cleanup pkill pattern 'http.server 8977' also matched your local ssh PID 773165 and killed it. Your gpu.sh then deleted gex44:/tmp/tanks-gpu-773062, so that run has no output. Leftovers on gex44 still running from it: http.server 8977 (pid 1462847) and roster_probe.py (pid 1463012); the http.server will keep port 8977 busy after the probe ends (its kill reads the deleted http.pid). I did NOT touch them: please kill those two and rerun. Sorry: my mistake (broad pkill).
  16:48 W-MONSTER final asset ready: monster-out/inquilino.glb, 811496 bytes, 10480 triangles, one Skeleton / 3 meshes / 3 materials. All 8 clips, 26 contract checks passed, crawl max 0.7715m. Four render sheets, metadata, NOTES and source helpers delivered. No game edits or deploy. Cleaning only task scratch.

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/bin/bash -lc "~/.claude/coord/coord claim local:/home/claude-agent/forge-build/forge-assets/jobs/k2-tank-v1/ --note 'K2 asset build and validation'; ~/.claude/coord/coord claim gex44:/root/fal-author/k2-tank-v1/ --note 'K2 Blender bake and render'" in /home/claude-agent/forge-build/forge-assets/jobs/k2-tank-v1
 succeeded in 0ms:
claim local:/home/claude-agent/forge-build/forge-assets/jobs/k2-tank-v1/ (refreshed)
claim gex44:/root/fal-author/k2-tank-v1/ (refreshed)

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/bin/bash -lc "python3 - <<'PY'
p='build_k2-tank.py';s=open(p).read();s=s.replace(\"names['Wreck_Turret'].rotation_euler=(.15,math.radians(125),.32)\",\"names['Wreck_Turret'].rotation_euler=(.15,math.radians(125),.32)\\n   bpy.context.view_layer.update()\\n   thrown=names['Wreck_Turret'];thrown.location.z-=min((thrown.matrix_world@v.co).z for v in thrown.data.vertices)\")
open(p,'w').write(s)
PY
scp build_k2-tank.py gex44:/root/fal-author/k2-tank-v1/build_k2-tank.py
ssh gex44 'tail -3 /root/fal-author/k2-tank-v1/build.log'" in /home/claude-agent/forge-build/forge-assets/jobs/k2-tank-v1
 succeeded in 1539ms:
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/bin/bash -lc 'python3 -m py_compile build_k2-tank.py; df -h .' in /home/claude-agent/forge-build/forge-assets/jobs/k2-tank-v1
 succeeded in 0ms:
Filesystem      Size  Used Avail Use% Mounted on
/dev/sda1       150G  133G   12G  92% /

codex
I found and fixed a proof-scene issue: the blown-off turret now settles onto the ground after rotation instead of intersecting it. The source also keeps the healthy and damaged part origins aligned for direct swaps.
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/bin/bash -lc "python3 - <<'PY'
p='build_k2-tank.py';s=open(p).read().replace(\"('Scars','rust_coarse_01',(.28,.25,.20),.68,.6,512)\",\"('Scars','rust_coarse_01',(.48,.50,.51),.48,.85,512)\")
open(p,'w').write(s)
PY
scp build_k2-tank.py gex44:/root/fal-author/k2-tank-v1/build_k2-tank.py
ssh gex44 'tail -4 /root/fal-author/k2-tank-v1/build.log'" in /home/claude-agent/forge-build/forge-assets/jobs/k2-tank-v1
 succeeded in 1654ms:
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exec
/bin/bash -lc "ssh gex44 'tail -5 /root/fal-author/k2-tank-v1/build.log; ps -eo pid,etime,args | grep \"blender.real -b\" | grep -v gpu_gate | head -5'" in /home/claude-agent/forge-build/forge-assets/jobs/k2-tank-v1
 succeeded in 507ms:
1480656       00:10 /root/blender-spike/blender-5.2.0-linux-x64/blender.real -b --python-exit-code 1 --python /root/fal-author/t14-armata-tank-v1/build_t14-armata-tank.py
1481422       00:00 /root/blender-spike/blender-5.2.0-linux-x64/blender.real -b --python-exit-code 1 --python /root/fal-author/char-b1-tank-v1/build_char-b1-tank.py
1481628       00:00 grep blender.real -b

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/bin/bash -lc 'scp gex44:/root/fal-author/k2-tank-v1/k2-tank.glb ./k2-tank.glb' in /home/claude-agent/forge-build/forge-assets/jobs/k2-tank-v1
 succeeded in 1292ms:
codex
The first healthy GLB is now in the delivery directory at about 11.6 MB. It’s a checkpoint; the queued clean build will replace it with the material, geometry and damage fixes before final validation.
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/bin/bash -lc "ssh gex44 'tail -5 /root/fal-author/k2-tank-v1/build.log; ps -eo pid,etime,args | grep \"blender.real -b\" | grep -v gpu_gate | head -5'" in /home/claude-agent/forge-build/forge-assets/jobs/k2-tank-v1
 succeeded in 602ms:
1480656       01:15 /root/blender-spike/blender-5.2.0-linux-x64/blender.real -b --python-exit-code 1 --python /root/fal-author/t14-armata-tank-v1/build_t14-armata-tank.py
1481422       01:05 /root/blender-spike/blender-5.2.0-linux-x64/blender.real -b --python-exit-code 1 --python /root/fal-author/char-b1-tank-v1/build_char-b1-tank.py
1487310       00:00 grep blender.real -b

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/bin/bash -lc "ssh gex44 'head -65 /root/blender-spike/blender-5.2.0-linux-x64/blender; grep -n -E \"sleep|poll|priority|queue\" /opt/gpu-gate/gpu_gate.py | tail -25'" in /home/claude-agent/forge-build/forge-assets/jobs/k2-tank-v1
 succeeded in 572ms:
#!/bin/bash
# GPU gate shim (16 Sept 2026): every Blender run waits for a VRAM slot on the shared RTX 4000
# so biome builds cannot overlap Hunyuan or each other. The real binary is blender.real.
exec python3 /opt/gpu-gate/gpu_gate.py --name blender --need-mib 6000 --priority batch -- "$(dirname "$0")/blender.real" "$@"
70:def _sleep(seconds: float) -> None:
71:    time.sleep(seconds)
170:        if slot.get("priority") != "build":
219:def _claim_slot(lock_dir: str, name: str, need_mib: int, priority: str,
240:        if priority == "batch" and _build_in_flight(live, now):
244:                "started": now, "priority": priority}
253:def _wait_for_slot(lock_dir: str, name: str, need_mib: int, priority: str,
254:                   timeout_s: float, poll_s: float, max_concurrent: int) -> str:
258:        decision = _claim_slot(lock_dir, name, need_mib, priority, max_concurrent)
266:        pause = min(decision.wait_s or poll_s, remaining)
267:        _sleep(pause)
272:            timeout_s: float = 1800, poll_s: float = 5, max_concurrent: int = 2,
273:            priority: str = "build"):
279:    if priority not in PRIORITIES:
280:        raise ValueError("priority must be one of %s" % (PRIORITIES,))
283:    path = _wait_for_slot(lock_dir, name, need_mib, priority,
284:                          timeout_s, poll_s, max_concurrent)
286:             name, os.getpid(), need_mib, priority)
313:    parser.add_argument("--priority", choices=PRIORITIES, default="build")
317:    parser.add_argument("--poll", type=float, default=5.0,
343:                     timeout_s=args.timeout, poll_s=args.poll,
344:                     max_concurrent=args.max_concurrent, priority=args.priority):

codex
The replacement build is still waiting for a GPU slot. The validation checks are ready for dimensions, texture limits, triangle counts, paint factors, hierarchy and matching damage pivots; I’ll run them on the newly exported files.
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/bin/bash -lc "ssh gex44 'tail -6 /root/fal-author/k2-tank-v1/build.log; ps -eo pid,etime,args | grep \"blender.real -b\" | grep -v gpu_gate | head -4'" in /home/claude-agent/forge-build/forge-assets/jobs/k2-tank-v1
 succeeded in 529ms:
1487788       00:58 /root/blender-spike/blender-5.2.0-linux-x64/blender.real -b --python-exit-code 1 --python /root/fal-author/a7v-tank-v1/build_a7v-tank.py
1489194       00:47 /root/blender-spike/blender-5.2.0-linux-x64/blender.real -b --factory-startup --python-exit-code 1 --python /root/ruth-teaser-20261011/director/build_director.py
1492276       00:00 grep blender.real -b

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/bin/bash -lc "ssh gex44 'tail -3 /root/fal-author/k2-tank-v1/build.log'" in /home/claude-agent/forge-build/forge-assets/jobs/k2-tank-v1
 succeeded in 478ms:
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exec
/bin/bash -lc "python3 - <<'PY'
p='build_k2-tank.py';s=open(p).read();needle=' # mantlet trunnion, barrel starts exactly at exit\\n';insert=''' # Layered frontal cheek appliques follow the wedge, with recessed panel joints.
 for s,label in [(1,'L'),(-1,'R')]:
  g=Geo();q=[(s*.48,-1.896,1.69),(s*1.01,-1.896,1.69),(s*.81,-1.477,2.075),(s*.45,-1.477,2.075)]
  g.add(q+[(x,y-.028,z+.017) for x,y,z in q],[(0,3,2,1),(4,5,6,7),(0,1,5,4),(1,2,6,5),(2,3,7,6),(3,0,4,7)])
  for z in [1.75,1.97]:
   y=-1.896+(z-1.69)*(.419/.385)-.032
   bolts(g,[(s*.54,y,z+.019),(s*(.94-(z-1.75)*.48),y,z+.019)],(0,-.68,.73),r=.014)
  g.object('Part_Turret_Cheek_'+label,(s*.72,-1.69,1.89),turret,.005)
'''
assert needle in s;s=s.replace(needle,insert+needle);open(p,'w').write(s)
PY
scp build_k2-tank.py gex44:/root/fal-author/k2-tank-v1/build_k2-tank.py" in /home/claude-agent/forge-build/forge-assets/jobs/k2-tank-v1
 succeeded in 952ms:
codex
I’ve added the layered front-cheek armour and its fasteners to better match the reference’s faceted turret. The build remains queued; no second Blender job is running from this task.
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/bin/bash -lc "python3 - <<'PY'
p='build_k2-tank.py';s=open(p).read().replace(\"[(x,-1.833,1.74)\",\"[(x,-1.873,1.74)\");open(p,'w').write(s)
PY
scp build_k2-tank.py gex44:/root/fal-author/k2-tank-v1/build_k2-tank.py
ssh gex44 'tail -5 /root/fal-author/k2-tank-v1/build.log'" in /home/claude-agent/forge-build/forge-assets/jobs/k2-tank-v1
 succeeded in 1525ms:
BAKED Glass
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
BAKED Lamps

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/bin/bash -lc "ssh gex44 'tail -8 /root/fal-author/k2-tank-v1/build.log'" in /home/claude-agent/forge-build/forge-assets/jobs/k2-tank-v1
 succeeded in 538ms:
18:54:57 | INFO: Primitives created: 3
18:54:57 | INFO: Finished glTF 2.0 export in 0.35432934761047363 s

EXPORTED k2-tank.glb 9676784
/root/fal-author/k2-tank-v1/build_k2-tank.py:522: DeprecationWarning: 'Material.use_nodes' is expected to be removed in Blender 6.0
  mat=bpy.data.materials.new('Studio');mat.diffuse_color=(.28,.30,.32,1);mat.use_nodes=True;mat.node_tree.nodes.get('Principled BSDF').inputs['Base Color'].default_value=(.28,.30,.32,1);mat.node_tree.nodes.get('Principled BSDF').inputs['Roughness'].default_value=.86
/root/fal-author/k2-tank-v1/build_k2-tank.py:524: DeprecationWarning: 'World.use_nodes' is expected to be removed in Blender 6.0
  sc.world.use_nodes=True;sc.world.node_tree.nodes.get('Background').inputs[0].default_value=(.55,.63,.74,1);sc.world.node_tree.nodes.get('Background').inputs[1].default_value=.55

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/bin/bash -lc "rg -n '"'^def studio|Studio.*diffuse'"' build_k2-tank.py; ssh gex44 'grep -c Part_Turret_Cheek /root/fal-author/k2-tank-v1/build.log'" in /home/claude-agent/forge-build/forge-assets/jobs/k2-tank-v1
 succeeded in 563ms:
520:def studio():
522: mat=bpy.data.materials.new('Studio');mat.diffuse_color=(.28,.30,.32,1);mat.use_nodes=True;mat.node_tree.nodes.get('Principled BSDF').inputs['Base Color'].default_value=(.28,.30,.32,1);mat.node_tree.nodes.get('Principled BSDF').inputs['Roughness'].default_value=.86
2

codex
The GPU run has started and exported the updated healthy tank at 9.7 MB, comfortably under the 12 MB limit. It’s now rendering the views and building the damage export.
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/bin/bash -lc "ssh gex44 'tail -12 /root/fal-author/k2-tank-v1/build.log'" in /home/claude-agent/forge-build/forge-assets/jobs/k2-tank-v1
 succeeded in 575ms:
18:54:57 | INFO: Primitives created: 3
18:54:57 | INFO: Extracting primitive: Wheel_R11
18:54:57 | INFO: Primitives created: 3
18:54:57 | INFO: Finished glTF 2.0 export in 0.35432934761047363 s

EXPORTED k2-tank.glb 9676784
/root/fal-author/k2-tank-v1/build_k2-tank.py:522: DeprecationWarning: 'Material.use_nodes' is expected to be removed in Blender 6.0
  mat=bpy.data.materials.new('Studio');mat.diffuse_color=(.28,.30,.32,1);mat.use_nodes=True;mat.node_tree.nodes.get('Principled BSDF').inputs['Base Color'].default_value=(.28,.30,.32,1);mat.node_tree.nodes.get('Principled BSDF').inputs['Roughness'].default_value=.86
/root/fal-author/k2-tank-v1/build_k2-tank.py:524: DeprecationWarning: 'World.use_nodes' is expected to be removed in Blender 6.0
  sc.world.use_nodes=True;sc.world.node_tree.nodes.get('Background').inputs[0].default_value=(.55,.63,.74,1);sc.world.node_tree.nodes.get('Background').inputs[1].default_value=.55
00:31.046  render           | Saved: '/root/fal-author/k2-tank-v1/final.png'
RENDER final.png

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/bin/bash -lc 'scp gex44:/root/fal-author/k2-tank-v1/final.png /tmp/k2-third.png' in /home/claude-agent/forge-build/forge-assets/jobs/k2-tank-v1
 succeeded in 1226ms:
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/bin/bash -lc "ssh gex44 'tail -12 /root/fal-author/k2-tank-v1/build.log'" in /home/claude-agent/forge-build/forge-assets/jobs/k2-tank-v1
 succeeded in 544ms:
18:55:28 | INFO: Blender create Mesh node Gun.001
18:55:28 | INFO: Blender create Mesh node Scar_Turret_Front
18:55:28 | INFO: Blender create Mesh node Scar_Turret_L
18:55:28 | INFO: Blender create Mesh node Scar_Turret_R
18:55:28 | INFO: Blender create Mesh node Scar_Turret_Rear
18:55:28 | INFO: Blender create Mesh node Hull.001
18:55:28 | INFO: Blender create Mesh node Turret.001
18:55:28 | INFO: glTF import finished in 0.43s
00:54.367  render           | Saved: '/root/fal-author/k2-tank-v1/_state0.png'
RENDER _state0.png
00:56.242  render           | Saved: '/root/fal-author/k2-tank-v1/_state1.png'
RENDER _state1.png

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/bin/bash -lc 'scp gex44:/root/fal-author/k2-tank-v1/k2-tank.glb /tmp/k2-new.glb
scp gex44:/root/fal-author/k2-tank-v1/k2-tank-damage.glb /tmp/k2-new-damage.glb
python3 /tmp/k2-validate.py /tmp/k2-new.glb /tmp/k2-new-damage.glb > /tmp/k2-validation.log' in /home/claude-agent/forge-build/forge-assets/jobs/k2-tank-v1
 succeeded in 3056ms:
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/bin/bash -lc "cat /tmp/k2-validation.log | head -28; tail -5 /tmp/k2-validation.log; ssh gex44 'tail -5 /root/fal-author/k2-tank-v1/build.log'" in /home/claude-agent/forge-build/forge-assets/jobs/k2-tank-v1
 succeeded in 551ms:
k2-new.glb {
  "bytes": 9676784,
  "triangles": 123672,
  "degenerate": 0,
  "nodes": 92,
  "bounds_min": [
    -1.8000000715255737,
    0.0,
    -3.749042496085167
  ],
  "bounds_max": [
    1.8000000715255737,
    2.400025323033333,
    7.050004541873932
  ],
  "dimensions": [
    3.6000001430511475,
    2.400025323033333,
    10.799047037959099
  ],
  "materials": [
    "Paint",
    "Metal",
    "Interior",
    "Rubber",
    "Lamps",
    "TrackSteel",
    "Glass"
    "Wreck_Hull",
    "Wreck_Turret"
  ]
}
CONTRACT PASS
RENDER _paint1.png
01:08.978  render           | Saved: '/root/fal-author/k2-tank-v1/_paint2.png'
RENDER _paint2.png
01:10.684  render           | Saved: '/root/fal-author/k2-tank-v1/_paint3.png'
RENDER _paint3.png

codex
The new exports pass the dimensional and rig checks: 10.799 × 3.600 × 2.400 m, tracks at ground level, 123,672 healthy triangles and no degenerate triangles. The render shows the paint weathering is too strong, so I’m reducing that contrast for a more convincing painted-steel finish.
 succeeded in 973960ms:
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/bin/bash -lc 'scp gex44:/root/fal-author/k2-tank-v1/states.png /tmp/k2-states-new.png
scp gex44:/root/fal-author/k2-tank-v1/side.png /tmp/k2-side-new.png' in /home/claude-agent/forge-build/forge-assets/jobs/k2-tank-v1
 succeeded in 2582ms:
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/bin/bash -lc "python3 - <<'PY'
p='build_k2-tank.py';s=open(p).read()
s=s.replace(\"a,b=(.26,.26,.26,1),(.98,.98,.98,1)\",\"a,b=(.68,.68,.68,1),(.98,.98,.98,1)\")
s=s.replace(\"default_value=.39 if name=='Paint' else .85\",\"default_value=.17 if name=='Paint' else .85\")
s=s.replace(\"default_value=.13 if name=='Paint'\",\"default_value=.055 if name=='Paint'\")
s=s.replace(\"('Burnt','rusty_metal_04',(.15,.125,.10),.94,.2,512)\",\"('Burnt','rusty_metal_04',(.070,.073,.070),.94,.2,512)\")
s=s.replace(\"g.cyl(c,r,.39,'Rubber' if kind=='road' else 'TrackSteel',(1,0,0),48)\",\"g.ring(c,r*.77,r,.39,'Rubber' if kind=='road' else 'TrackSteel',(1,0,0),48)\\n   g.cyl(c,r*.77,.32,'Paint',(1,0,0),48)\")
s=s.replace(\"studio();names={o.name:o for o in a+b}\",\"studio();names={o.name:o for o in a+b}\\n for o in a+b:\\n  transform=o.matrix_world.copy();o.rotation_mode='XYZ';o.matrix_world=transform\")
s=s.replace(\"elif o.name in ['Gun','MG']\", \"elif o.name=='Barrel':o.location.y+=.25\\n  elif o.name in ['Gun','MG']\")
open(p,'w').write(s)
PY
python3 -m py_compile build_k2-tank.py" in /home/claude-agent/forge-build/forge-assets/jobs/k2-tank-v1
 succeeded in 0ms:
codex
The damage proof exposed an animation-check bug: Blender imported the GLB nodes in quaternion mode, so the test’s Euler rotations were being ignored. I’ve corrected that and added a recoil test. I’m also fixing the wheel centres, which were partly hidden behind the tyre geometry.
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/bin/bash -lc "scp build_k2-tank.py gex44:/root/fal-author/k2-tank-v1/build_k2-tank.py
ssh gex44 '/root/blender-spike/blender-5.2.0-linux-x64/blender -b --python-exit-code 1 --python /root/fal-author/k2-tank-v1/build_k2-tank.py > /root/fal-author/k2-tank-v1/build.log 2>&1'" in /home/claude-agent/forge-build/forge-assets/jobs/k2-tank-v1
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/bin/bash -lc 'python3 /home/claude-agent/.agents/skills/blender-game-assets/scripts/audit_glb.py /tmp/k2-new.glb --strict > /tmp/k2-audit-new.json
python3 /home/claude-agent/.agents/skills/blender-game-assets/scripts/audit_glb.py /tmp/k2-new-damage.glb --strict > /tmp/k2-damage-audit-new.json' in /home/claude-agent/forge-build/forge-assets/jobs/k2-tank-v1
 exited 1 in 295ms:
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/bin/bash -lc "python3 - <<'PY'
import json
for p in ['/tmp/k2-audit-new.json','/tmp/k2-damage-audit-new.json']:
 d=json.load(open(p)); print(p); print(str(d)[-3200:])
PY" in /home/claude-agent/forge-build/forge-assets/jobs/k2-tank-v1
 succeeded in 0ms:
/tmp/k2-audit-new.json
rea_triangles': 0, 'nonfinite_attribute_components': 0}, {'mesh': 'Wheel_R7', 'primitive': 2, 'triangles': 800, 'zero_area_triangles': 0, 'nonfinite_attribute_components': 0}, {'mesh': 'Wheel_R8', 'primitive': 0, 'triangles': 188, 'zero_area_triangles': 0, 'nonfinite_attribute_components': 0}, {'mesh': 'Wheel_R8', 'primitive': 1, 'triangles': 2182, 'zero_area_triangles': 0, 'nonfinite_attribute_components': 0}, {'mesh': 'Wheel_R8', 'primitive': 2, 'triangles': 802, 'zero_area_triangles': 0, 'nonfinite_attribute_components': 0}, {'mesh': 'Wheel_R9', 'primitive': 0, 'triangles': 190, 'zero_area_triangles': 0, 'nonfinite_attribute_components': 0}, {'mesh': 'Wheel_R9', 'primitive': 1, 'triangles': 2026, 'zero_area_triangles': 0, 'nonfinite_attribute_components': 0}, {'mesh': 'Wheel_R9', 'primitive': 2, 'triangles': 956, 'zero_area_triangles': 0, 'nonfinite_attribute_components': 0}, {'mesh': 'Wheel_R10', 'primitive': 0, 'triangles': 188, 'zero_area_triangles': 0, 'nonfinite_attribute_components': 0}, {'mesh': 'Wheel_R10', 'primitive': 1, 'triangles': 2190, 'zero_area_triangles': 0, 'nonfinite_attribute_components': 0}, {'mesh': 'Wheel_R10', 'primitive': 2, 'triangles': 794, 'zero_area_triangles': 0, 'nonfinite_attribute_components': 0}, {'mesh': 'Wheel_R11', 'primitive': 0, 'triangles': 556, 'zero_area_triangles': 0, 'nonfinite_attribute_components': 0}, {'mesh': 'Wheel_R11', 'primitive': 1, 'triangles': 1220, 'zero_area_triangles': 0, 'nonfinite_attribute_components': 0}, {'mesh': 'Wheel_R11', 'primitive': 2, 'triangles': 812, 'zero_area_triangles': 0, 'nonfinite_attribute_components': 0}], 'duplicate_primitives': [{'primitive': 'Part_EngineGrille_R[2]', 'same_as': 'Part_EngineGrille_L[2]'}, {'primitive': 'Part_Fender_FR[0]', 'same_as': 'Part_Fender_FL[0]'}, {'primitive': 'Part_Fender_RR[0]', 'same_as': 'Part_Fender_RL[0]'}, {'primitive': 'Part_Skirt_L7[0]', 'same_as': 'Part_Skirt_L1[0]'}, {'primitive': 'Part_Skirt_R7[0]', 'same_as': 'Part_Skirt_R1[0]'}, {'primitive': 'Part_TailLamp_R[0]', 'same_as': 'Part_TailLamp_L[0]'}, {'primitive': 'Part_ToolBox_R[0]', 'same_as': 'Part_ToolBox_L[0]'}, {'primitive': 'Part_TowCable_R[1]', 'same_as': 'Part_TowCable_L[1]'}, {'primitive': 'Track_R[0]', 'same_as': 'Track_L[0]'}, {'primitive': 'Track_R[1]', 'same_as': 'Track_L[1]'}, {'primitive': 'Part_Turret_Smoke_R[0]', 'same_as': 'Part_Turret_Smoke_L[0]'}, {'primitive': 'Wheel_L10[2]', 'same_as': 'Wheel_L2[2]'}, {'primitive': 'Wheel_R1[0]', 'same_as': 'Wheel_L1[0]'}, {'primitive': 'Wheel_R2[0]', 'same_as': 'Wheel_L2[0]'}, {'primitive': 'Wheel_R3[0]', 'same_as': 'Wheel_L3[0]'}, {'primitive': 'Wheel_R4[0]', 'same_as': 'Wheel_L4[0]'}, {'primitive': 'Wheel_R5[0]', 'same_as': 'Wheel_L5[0]'}, {'primitive': 'Wheel_R7[0]', 'same_as': 'Wheel_L7[0]'}, {'primitive': 'Wheel_R8[0]', 'same_as': 'Wheel_L8[0]'}, {'primitive': 'Wheel_R10[0]', 'same_as': 'Wheel_L10[0]'}], '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': 123672, 'zero_area_triangles': 0, 'nonfinite_attribute_components': 0, 'findings': ['duplicate_primitives']}
/tmp/k2-damage-audit-new.json
esh': 'Part_Turret_Armour_R3.001', 'primitive': 1, 'triangles': 106, 'zero_area_triangles': 0, 'nonfinite_attribute_components': 0}, {'mesh': 'Part_Turret_Armour_R3.001', 'primitive': 2, 'triangles': 5, 'zero_area_triangles': 0, 'nonfinite_attribute_components': 0}, {'mesh': 'Part_Turret_BustleBins.001', 'primitive': 0, 'triangles': 144, 'zero_area_triangles': 0, 'nonfinite_attribute_components': 0}, {'mesh': 'Part_Turret_BustleBins.001', 'primitive': 1, 'triangles': 97, 'zero_area_triangles': 0, 'nonfinite_attribute_components': 0}, {'mesh': 'Part_Turret_BustleRack.001', 'primitive': 0, 'triangles': 436, 'zero_area_triangles': 0, 'nonfinite_attribute_components': 0}, {'mesh': 'Part_Turret_BustleRack.001', 'primitive': 1, 'triangles': 194, 'zero_area_triangles': 0, 'nonfinite_attribute_components': 0}, {'mesh': 'Gun.001', 'primitive': 0, 'triangles': 4290, 'zero_area_triangles': 0, 'nonfinite_attribute_components': 0}, {'mesh': 'Gun.001', 'primitive': 1, 'triangles': 272, 'zero_area_triangles': 0, 'nonfinite_attribute_components': 0}, {'mesh': 'Gun.001', 'primitive': 2, 'triangles': 20, 'zero_area_triangles': 0, 'nonfinite_attribute_components': 0}, {'mesh': 'Scar_Turret_Front', 'primitive': 0, 'triangles': 402, 'zero_area_triangles': 0, 'nonfinite_attribute_components': 0}, {'mesh': 'Scar_Turret_Front', 'primitive': 1, 'triangles': 456, 'zero_area_triangles': 0, 'nonfinite_attribute_components': 0}, {'mesh': 'Scar_Turret_L', 'primitive': 0, 'triangles': 402, 'zero_area_triangles': 0, 'nonfinite_attribute_components': 0}, {'mesh': 'Scar_Turret_L', 'primitive': 1, 'triangles': 456, 'zero_area_triangles': 0, 'nonfinite_attribute_components': 0}, {'mesh': 'Scar_Turret_R', 'primitive': 0, 'triangles': 402, 'zero_area_triangles': 0, 'nonfinite_attribute_components': 0}, {'mesh': 'Scar_Turret_R', 'primitive': 1, 'triangles': 456, 'zero_area_triangles': 0, 'nonfinite_attribute_components': 0}, {'mesh': 'Scar_Turret_Rear', 'primitive': 0, 'triangles': 402, 'zero_area_triangles': 0, 'nonfinite_attribute_components': 0}, {'mesh': 'Scar_Turret_Rear', 'primitive': 1, 'triangles': 456, 'zero_area_triangles': 0, 'nonfinite_attribute_components': 0}, {'mesh': 'Hull.001', 'primitive': 0, 'triangles': 41449, 'zero_area_triangles': 0, 'nonfinite_attribute_components': 0}, {'mesh': 'Turret.001', 'primitive': 0, 'triangles': 5263, 'zero_area_triangles': 0, 'nonfinite_attribute_components': 0}], 'duplicate_primitives': [{'primitive': 'Part_Skirt_L2.001[1]', 'same_as': 'Part_Skirt_L1.001[1]'}, {'primitive': 'Part_Skirt_L5.001[1]', 'same_as': 'Part_Skirt_L3.001[1]'}, {'primitive': 'Part_Skirt_L6.001[1]', 'same_as': 'Part_Skirt_L1.001[1]'}, {'primitive': 'Part_Skirt_L7.001[0]', 'same_as': 'Part_Skirt_L1.001[0]'}, {'primitive': 'Part_Skirt_L7.001[1]', 'same_as': 'Part_Skirt_L1.001[1]'}, {'primitive': 'Part_Skirt_R2.001[1]', 'same_as': 'Part_Skirt_R1.001[1]'}], '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': 103225, 'zero_area_triangles': 0, 'nonfinite_attribute_components': 0, 'findings': ['duplicate_primitives']}

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/bin/bash -lc "ssh gex44 'tail -4 /root/fal-author/k2-tank-v1/build.log'" in /home/claude-agent/forge-build/forge-assets/jobs/k2-tank-v1
 succeeded in 583ms:
/root/fal-author/k2-tank-v1/build_k2-tank.py:523: DeprecationWarning: 'Material.use_nodes' is expected to be removed in Blender 6.0
  mat=bpy.data.materials.new('Studio');mat.diffuse_color=(.28,.30,.32,1);mat.use_nodes=True;mat.node_tree.nodes.get('Principled BSDF').inputs['Base Color'].default_value=(.28,.30,.32,1);mat.node_tree.nodes.get('Principled BSDF').inputs['Roughness'].default_value=.86
/root/fal-author/k2-tank-v1/build_k2-tank.py:525: DeprecationWarning: 'World.use_nodes' is expected to be removed in Blender 6.0
  sc.world.use_nodes=True;sc.world.node_tree.nodes.get('Background').inputs[0].default_value=(.55,.63,.74,1);sc.world.node_tree.nodes.get('Background').inputs[1].default_value=.55

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exec
/bin/bash -lc "ssh gex44 'tail -7 /root/fal-author/k2-tank-v1/build.log'
scp gex44:/root/fal-author/k2-tank-v1/final.png /tmp/k2-fourth.png" in /home/claude-agent/forge-build/forge-assets/jobs/k2-tank-v1
 succeeded in 1786ms:
RENDER _state3.png
00:52.512  render           | Saved: '/root/fal-author/k2-tank-v1/_state4.png'
RENDER _state4.png
00:54.260  render           | Saved: '/root/fal-author/k2-tank-v1/_state5.png'
RENDER _state5.png
00:56.641  render           | Saved: '/root/fal-author/k2-tank-v1/_paint0.png'
RENDER _paint0.png

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/bin/bash -lc 'scp gex44:/root/fal-author/k2-tank-v1/states.png /tmp/k2-states-fourth.png
scp gex44:/root/fal-author/k2-tank-v1/pivots.png /tmp/k2-pivots-fourth.png' in /home/claude-agent/forge-build/forge-assets/jobs/k2-tank-v1
 succeeded in 2332ms:
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codex
The corrected proof now shows the turret turning, the gun moving at its trunnion and the hatches moving at their hinges. I’m refining the stripped turret’s exposed mounts and laying the detached wreck turret fully beside the hull for a clearer destruction proof.
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/bin/bash -lc "python3 - <<'PY'
p='build_k2-tank.py';s=open(p).read()
s=s.replace(\"a,b=(.68,.68,.68,1),(.98,.98,.98,1)\",\"a,b=(.50,.50,.50,1),(.98,.98,.98,1)\")
s=s.replace(\"default_value=.17 if name=='Paint' else .85\",\"default_value=.24 if name=='Paint' else .85\")
s=s.replace(\"g.ring((s*.94,-3.47,.77)\",\"g.ring((s*.94,-3.61,.84)\")
s=s.replace(\"g.ring((s*.94,3.705,.66),.055,.095,.07,'Metal',(0,1,0),20)\",\"g.ring((s*.94,3.705,.66),.055,.095,.07,'Metal',(0,1,0),20)\\n  g.box((s*.94,-3.57,.84),(.19,.13,.16));g.box((s*.94,3.635,.66),(.19,.15,.15))\")
needle=\" turret=g.object('Turret',tp,bev=.012);bpy.context.view_layer.update()\"
insert=\"\"\" # Permanent weld beads and armour mounting bosses remain on a stripped turret.
 for side in [-1,1]:
  g.line([(side*1.494,-.94,1.80),(side*1.494,1.62,1.80)],.005,'Metal',6)
  for yy in [-.72,-.22,.38,.88,1.38]:
   g.cyl((side*1.45,yy,1.86),.037,.030,'Paint',(1,0,0),16)
   bolts(g,[(side*1.47,yy,1.86)],(side,0,0),r=.013)
 for yy in [-.48,.88,1.75]:g.line([(-1.10,yy,2.123),(1.10,yy,2.123)],.004,'Metal',6)
\"\"\"
assert needle in s;s=s.replace(needle,insert+needle)
s=s.replace(\"names['Wreck_Turret'].location=(2.8,.75,.78);names['Wreck_Turret'].rotation_euler=(.15,math.radians(125),.32)\",\"names['Wreck_Turret'].location=(3.6,-.9,.78);names['Wreck_Turret'].rotation_euler=(.08,math.radians(170),.25)\")
s=s.replace(\"thrown=names['Wreck_Turret'];thrown.location.z-=min((thrown.matrix_world@v.co).z for v in thrown.data.vertices)\",\"thrown=names['Wreck_Turret'];thrown.location.z-=min((thrown.matrix_world@v.co).z for v in thrown.data.vertices)\\n   thrown.location.x+=1.98-min((thrown.matrix_world@v.co).x for v in thrown.data.vertices)\")
s=s.replace(\"if n.type=='MIX_RGB':\\n    for s in n.inputs[1:]\", \"if n.type=='MIX':\\n    for s in n.inputs:\\n     if s.type=='RGBA' and not s.is_linked:s.default_value=tuple(PAINTS[0][1])+(1,)\\n   elif n.type=='MIX_RGB':\\n    for s in n.inputs[1:]\")
s=s.replace(\"elif o.name in ['Gun','MG'] or o.name.startswith(('Wheel_','Hatch_')):o.rotation_euler.x+=math.radians(30)\",\"elif o.name in ['Gun','MG'] or o.name.startswith('Hatch_'):o.rotation_euler.x-=math.radians(30)\\n  elif o.name.startswith('Wheel_'):o.rotation_euler.x+=math.radians(30)\")
open(p,'w').write(s)
PY
python3 -m py_compile build_k2-tank.py" in /home/claude-agent/forge-build/forge-assets/jobs/k2-tank-v1
 succeeded in 0ms:
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exec
/bin/bash -lc "python3 - <<'PY'
p='build_k2-tank.py';s=open(p).read();needle=\" g.object('MG',(-.52,.61,2.24),turret,.003)\";ins=\"\"\" g.box((-.52,.43,2.389),(.105,.28,.014),'Metal')
 g.box((-.52,.70,2.30),(.22,.035,.045),'Metal')
 for xx in [-.61,-.43]:g.cyl((xx,.72,2.30),.019,.13,'Rubber',n=16)
 g.ring((-.52,.12,2.34),.025,.038,.18,'Metal',(0,1,0),24)
 for yy in [.06,.11,.16]:
  for xx in [-.559,-.481]:g.cyl((xx,yy,2.34),.012,.004,'Rubber',(1,0,0),12)
 g.line([(-.52,-.28,2.35),(-.52,-.28,2.397)],.008,'Metal',8)
\"\"\";assert needle in s;s=s.replace(needle,ins+needle);open(p,'w').write(s)
PY
scp build_k2-tank.py gex44:/root/fal-author/k2-tank-v1/build_k2-tank.py
ssh gex44 '/root/blender-spike/blender-5.2.0-linux-x64/blender -b --python-exit-code 1 --python /root/fal-author/k2-tank-v1/build_k2-tank.py > /root/fal-author/k2-tank-v1/build.log 2>&1'" in /home/claude-agent/forge-build/forge-assets/jobs/k2-tank-v1
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/bin/bash -lc "ssh gex44 'tail -3 /root/fal-author/k2-tank-v1/build.log'" in /home/claude-agent/forge-build/forge-assets/jobs/k2-tank-v1
 succeeded in 506ms:
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/bin/bash -lc "python3 - <<'PY'
p='build_k2-tank.py';s=open(p).read().replace(\"(r*.77,.003)\",\"(r*.77,.002)\")
s=s.replace(\"if k<3:g.line([c+u*.07,c+u*.17+v*.035,c+u*.24+v*.045],.008,'Scars',6)\",\"\"\"if k<3:
     pts=[c+u*.07,c+u*.17+v*.035,c+u*.24+v*.045]
     for a,b in zip(pts,pts[1:]):
      w=normal.cross(b-a).normalized()*.008
      g.add([a-w+normal*.002,a+normal*.0004,a+w+normal*.002,b-w+normal*.002,b+normal*.0004,b+w+normal*.002],[(0,1,4,3),(1,2,5,4)],'Scars')\"\"\")
open(p,'w').write(s)
PY
python3 -m py_compile build_k2-tank.py
scp build_k2-tank.py gex44:/root/fal-author/k2-tank-v1/build_k2-tank.py" in /home/claude-agent/forge-build/forge-assets/jobs/k2-tank-v1
 succeeded in 956ms:
codex
The current exports are within the texture and geometry limits. I’m finishing two close-up details: low-profile impact gouges and permanent welds and bolt bosses beneath removable turret armour. The next proof will check those alongside the detached turret placement.
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/bin/bash -lc "ssh gex44 'tail -3 /root/fal-author/k2-tank-v1/build.log'" in /home/claude-agent/forge-build/forge-assets/jobs/k2-tank-v1
 succeeded in 692ms:
  mat=bpy.data.materials.new('Studio');mat.diffuse_color=(.28,.30,.32,1);mat.use_nodes=True;mat.node_tree.nodes.get('Principled BSDF').inputs['Base Color'].default_value=(.28,.30,.32,1);mat.node_tree.nodes.get('Principled BSDF').inputs['Roughness'].default_value=.86
/root/fal-author/k2-tank-v1/build_k2-tank.py:544: DeprecationWarning: 'World.use_nodes' is expected to be removed in Blender 6.0
  sc.world.use_nodes=True;sc.world.node_tree.nodes.get('Background').inputs[0].default_value=(.55,.63,.74,1);sc.world.node_tree.nodes.get('Background').inputs[1].default_value=.55

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/bin/bash -lc "python3 - <<'PY'
p='build_k2-tank.py';s=open(p).read()
s=s.replace(\"comb.inputs[0].default_value=1;comb.inputs[2].default_value=metal\", \"l.new(sep.outputs[0],comb.inputs[0]);comb.inputs[2].default_value=metal\")
needle=\"   se=n.new('ShaderNodeSeparateColor');l.new(t.outputs[0],se.inputs[0]);l.new(se.outputs[1],bs.inputs['Roughness']);l.new(se.outputs[2],bs.inputs['Metallic'])\"
replacement=needle+\"\"\"
   grp=bpy.data.node_groups.get('glTF Material Output')
   if grp is None:
    grp=bpy.data.node_groups.new('glTF Material Output','ShaderNodeTree');grp.interface.new_socket(name='Occlusion',in_out='INPUT',socket_type='NodeSocketFloat')
   occ=n.new('ShaderNodeGroup');occ.node_tree=grp;l.new(se.outputs[0],occ.inputs['Occlusion'])\"\"\"
assert needle in s;s=s.replace(needle,replacement)
s=s.replace(\"elif o.name=='Barrel':o.location.y+=.25\", \"elif o.name=='Barrel':o.location.y+=.25;o.rotation_euler.y+=math.radians(30)\")
open(p,'w').write(s)
PY
python3 -m py_compile build_k2-tank.py
ssh gex44 'tail -5 /root/fal-author/k2-tank-v1/build.log'" in /home/claude-agent/forge-build/forge-assets/jobs/k2-tank-v1
 succeeded in 665ms:
  mat=bpy.data.materials.new('Studio');mat.diffuse_color=(.28,.30,.32,1);mat.use_nodes=True;mat.node_tree.nodes.get('Principled BSDF').inputs['Base Color'].default_value=(.28,.30,.32,1);mat.node_tree.nodes.get('Principled BSDF').inputs['Roughness'].default_value=.86
/root/fal-author/k2-tank-v1/build_k2-tank.py:544: DeprecationWarning: 'World.use_nodes' is expected to be removed in Blender 6.0
  sc.world.use_nodes=True;sc.world.node_tree.nodes.get('Background').inputs[0].default_value=(.55,.63,.74,1);sc.world.node_tree.nodes.get('Background').inputs[1].default_value=.55
00:24.571  render           | Saved: '/root/fal-author/k2-tank-v1/final.png'
RENDER final.png

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/bin/bash -lc 'scp gex44:/root/fal-author/k2-tank-v1/final.png /tmp/k2-fifth.png' in /home/claude-agent/forge-build/forge-assets/jobs/k2-tank-v1
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/bin/bash -lc "ssh gex44 'tail -5 /root/fal-author/k2-tank-v1/build.log'
scp gex44:/root/fal-author/k2-tank-v1/states.png /tmp/k2-states-fifth.png" in /home/claude-agent/forge-build/forge-assets/jobs/k2-tank-v1
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RENDER _state0.png
00:47.629  render           | Saved: '/root/fal-author/k2-tank-v1/_state1.png'
RENDER _state1.png
00:49.412  render           | Saved: '/root/fal-author/k2-tank-v1/_state2.png'
RENDER _state2.png

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/bin/bash -lc 'scp gex44:/root/fal-author/k2-tank-v1/states.png /tmp/k2-states-fifth.png
scp gex44:/root/fal-author/k2-tank-v1/pivots.png /tmp/k2-pivots-fifth.png' in /home/claude-agent/forge-build/forge-assets/jobs/k2-tank-v1
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codex
The six-state proof now shows all requested states clearly, including exposed mounts on the stripped tank and the detached turret’s closed underside and basket. The pivot render also confirms the hatches reveal dark crew wells when opened. I’m running the final clean build with exported occlusion maps included.
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/bin/bash -lc "scp gex44:/root/fal-author/k2-tank-v1/k2-tank.glb gex44:/root/fal-author/k2-tank-v1/k2-tank-damage.glb ./
scp build_k2-tank.py gex44:/root/fal-author/k2-tank-v1/build_k2-tank.py
ssh gex44 '/root/blender-spike/blender-5.2.0-linux-x64/blender -b --python-exit-code 1 --python /root/fal-author/k2-tank-v1/build_k2-tank.py > /root/fal-author/k2-tank-v1/build.log 2>&1'" in /home/claude-agent/forge-build/forge-assets/jobs/k2-tank-v1
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/bin/bash -lc "python3 - <<'PY'
p='/tmp/k2-validate.py';s=open(p).read();s=s.replace(\"print('CONTRACT PASS')\", \"\"\"for side in ['L','R']:
 wheels=[n for n in A['nodes'] if n['name'].startswith('Wheel_'+side)]
 assert len(wheels)==11
 assert sum(n.get('extras',{}).get('wheel_role')=='road' for n in wheels)==6
 assert sum(n.get('extras',{}).get('wheel_role')=='return' for n in wheels)==3
 assert all(n.get('scale',[1,1,1])==[1,1,1] for n in wheels)
for left,right in [('Turret_Damage','Turret'),('Wreck_Turret','Turret'),('Gun_Broken','Gun')]:
 assert np.allclose(bw[bn[left]][:3,3],aw[an[right]][:3,3],atol=.00001)
assert len(A['materials'])<=10
assert set(m['name'] for m in B['materials']) <= {'Paint','Burnt','Scars','TrackSteel','Rubber'}
import hashlib
for prop in ['baseColorTexture','metallicRoughnessTexture']:
 hashes=[]
 for path in sys.argv[1:3]:
  d,b=read(path);m=next(m for m in d['materials'] if m['name']=='Paint');ti=m['pbrMetallicRoughness'][prop]['index'];im=d['images'][d['textures'][ti]['source']];v=d['bufferViews'][im['bufferView']];blob=b[v.get('byteOffset',0):v.get('byteOffset',0)+v['byteLength']];hashes.append(hashlib.sha256(blob).hexdigest())
 assert hashes[0]==hashes[1],('Paint texture mismatch',prop)
print('CONTRACT PASS')\"\"\")
open(p,'w').write(s)
PY
ssh gex44 'tail -4 /root/fal-author/k2-tank-v1/build.log'" in /home/claude-agent/forge-build/forge-assets/jobs/k2-tank-v1
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/bin/bash -lc "python3 /tmp/k2-validate.py k2-tank.glb k2-tank-damage.glb > /tmp/k2-checkpoint-validation.log
ssh gex44 'tail -3 /root/fal-author/k2-tank-v1/build.log'
date -u '+%H:%M:%S'" in /home/claude-agent/forge-build/forge-assets/jobs/k2-tank-v1
 succeeded in 864ms:
17:05:24

codex
Both GLBs are now in the delivery directory. The latest checks also confirm six road wheels per side, matching paint textures between healthy and damaged assets, and matching turret and gun pivots across both files. The final bake is waiting for the shared GPU slot.
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/bin/bash -lc "ssh gex44 'tail -5 /root/fal-author/k2-tank-v1/build.log; ps -eo pid,etime,args | grep \"blender.real -b\" | grep -v gpu_gate | head -4'" in /home/claude-agent/forge-build/forge-assets/jobs/k2-tank-v1
 succeeded in 508ms:
1543448       01:53 /root/blender-spike/blender-5.2.0-linux-x64/blender.real -b /root/ruth-teaser-20261011/director/shots.blend --python-exit-code 1 --python /root/ruth-teaser-20261011/director/render_director.py -- previz 634 900
1552521       00:03 /root/blender-spike/blender-5.2.0-linux-x64/blender.real -b --python-exit-code 1 --python /root/fal-author/t55-tank-v1/build_t55-tank.py
1552893       00:00 grep blender.real -b

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/bin/bash -lc "python3 - <<'PY'
import json,struct,pathlib
for p in map(pathlib.Path,['k2-tank.glb','k2-tank-damage.glb']):
 b=p.read_bytes();l=struct.unpack_from('<I',b,12)[0];d=json.loads(b[20:20+l]);print(p.name,p.stat().st_size,sum(d['accessors'][pr['indices']]['count']//3 for n in d['nodes'] if 'mesh' in n for pr in d['meshes'][n['mesh']]['primitives']),len(d['nodes']))
PY" in /home/claude-agent/forge-build/forge-assets/jobs/k2-tank-v1
 succeeded in 0ms:
k2-tank.glb 9435792 123626 92
k2-tank-damage.glb 10051452 103154 37

codex
The healthy asset is 9.4 MB with 123,626 triangles; the damage asset is 10.1 MB with 103,154 triangles. I’m keeping the remaining work to the final bake, visual review and delivery checks.
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 succeeded in 537ms:
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
BAKED Interior

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context compacted
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 succeeded in 476ms:
    ~~~~~~~~~~~~~~~~~~^^^^^^^^^^^^^^^
  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/k2-tank-v1/build_k2-tank.py', exiting.

Blender quit

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    ~~~~~~~~~~~~~~~~~~~~~~^^^^
  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'
00:55.105  bpy.rna          | ERROR Python script error in IMPORT_SCENE_OT_gltf.execute
Traceback (most recent call last):
  File "/root/fal-author/k2-tank-v1/build_k2-tank.py", line 672, in <module>
    proof()
    ~~~~~^^
  File "/root/fal-author/k2-tank-v1/build_k2-tank.py", line 573, in proof
    bpy.ops.import_scene.gltf(filepath=str(ROOT/'k2-tank.glb'));a=list(sc.objects)
    ~~~~~~~~~~~~~~~~~~~~~~~~~^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
RuntimeError: 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_gltf2/blender/imp/blender_gltf.py", line 48, in _create
    BlenderScene.create(gltf)
    ~~~~~~~~~~~~~~~~~~~^^^^^^
  File "/root/blender-spike/blender-5.2.0-linux-x64/5.2/scripts/addons_core/io_scene_gltf2/blender/imp/scene.py", line 39, in create
    BlenderNode.create_vnode(gltf, 'root')
    ~~~~~~~~~~~~~~~~~~~~~~~~^^^^^^^^^^^^^^
  File "/root/blender-spike/blender-5.2.0-linux-x64/5.2/scripts/addons_core/io_scene_gltf2/blender/imp/node.py", line 47, in create_vnode
    BlenderNode.create_vnode(gltf, child)
    ~~~~~~~~~~~~~~~~~~~~~~~~^^^^^^^^^^^^^
  File "/root/blender-spike/blender-5.2.0-linux-x64/5.2/scripts/addons_core/io_scene_gltf2/blender/imp/node.py", line 33, in create_vnode
    obj = BlenderNode.create_object(gltf, vnode_id)
  File "/root/blender-spike/blender-5.2.0-linux-x64/5.2/scripts/addons_core/io_scene_gltf2/blender/imp/node.py", line 54, in create_object
    obj = BlenderNode.create_mesh_object(gltf, vnode)
  File "/root/blender-spike/blender-5.2.0-linux-x64/5.2/scripts/addons_core/io_scene_gltf2/blender/imp/node.py", line 314, in create_mesh_object
    mesh = BlenderMesh.create(gltf, pynode.mesh, pynode.skin)
  File "/root/blender-spike/blender-5.2.0-linux-x64/5.2/scripts/addons_core/io_scene_gltf2/blender/imp/mesh.py", line 26, in create
    return create_mesh(gltf, mesh_idx, skin_idx)
  File "/root/blender-spike/blender-5.2.0-linux-x64/5.2/scripts/addons_core/io_scene_gltf2/blender/imp/mesh.py", line 52, in create_mesh
    do_primitives(gltf, mesh_idx, skin_idx, mesh, tmp_ob)
    ~~~~~~~~~~~~~^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/root/blender-spike/blender-5.2.0-linux-x64/5.2/scripts/addons_core/io_scene_gltf2/blender/imp/mesh.py", line 540, in do_primitives
    BlenderMaterial.create(gltf, prim.material, vertex_color)
    ~~~~~~~~~~~~~~~~~~~~~~^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/root/blender-spike/blender-5.2.0-linux-x64/5.2/scripts/addons_core/io_scene_gltf2/blender/imp/material.py", line 68, in create
    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/k2-tank-v1/build_k2-tank.py:573

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/k2-tank-v1/build_k2-tank.py', exiting.

Blender quit

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/bin/bash -lc "rg -n 'Occlusion|glTF Material|node_tree|proof' build_k2-tank.py" in /home/claude-agent/forge-build/forge-assets/jobs/k2-tank-v1
 succeeded in 0ms:
3:Optional -- --proof-only reloads exported GLBs for proof rendering.
35: mat=bpy.data.materials.new(name); mat.use_nodes=True; nt=mat.node_tree; n=nt.nodes; l=nt.links
85:   grp=bpy.data.node_groups.get('glTF Material Output')
87:    grp=bpy.data.node_groups.new('glTF Material Output','ShaderNodeTree');grp.interface.new_socket(name='Occlusion',in_out='INPUT',socket_type='NodeSocketFloat')
88:   occ=n.new('ShaderNodeGroup');occ.node_tree=grp;l.new(se.outputs[0],occ.inputs['Occlusion'])
546: mat=bpy.data.materials.new('Studio');mat.diffuse_color=(.28,.30,.32,1);mat.use_nodes=True;mat.node_tree.nodes.get('Principled BSDF').inputs['Base Color'].default_value=(.28,.30,.32,1);mat.node_tree.nodes.get('Principled BSDF').inputs['Roughness'].default_value=.86
548: sc.world.use_nodes=True;sc.world.node_tree.nodes.get('Background').inputs[0].default_value=(.55,.63,.74,1);sc.world.node_tree.nodes.get('Background').inputs[1].default_value=.55
570:def proof():
571: # Required proof is strictly a fresh-scene import of both delivered binary files.
606: # Restore frame for proof of six recolour factors.
612:   bs=next((n for n in mat.node_tree.nodes if n.type=='BSDF_PRINCIPLED'),None)
625:     nt=mat.node_tree;old=socket.links[0].from_socket;mix=nt.nodes.new('ShaderNodeMixRGB');mix.blend_type='MULTIPLY';mix.inputs[0].default_value=1;mix.inputs[2].default_value=tuple(c)+(1,);nt.links.new(old,mix.inputs[1]);nt.links.new(mix.outputs[0],socket)
632:  for n in mat.node_tree.nodes:
647:if '--proof-only' in sys.argv:
648: proof()
657: clay=bpy.data.materials.new('_Clay');clay.diffuse_color=(.35,.35,.35,1);clay.use_nodes=True;clay.node_tree.nodes.get('Principled BSDF').inputs['Base Color'].default_value=(.35,.35,.35,1)
672: proof()

codex
The final export revealed a Blender importer conflict with the occlusion material node. I’m fixing that so the damage and repaint proofs can be rendered from the delivered GLBs as requested.

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/bin/bash -lc "sed -n '565,580p' build_k2-tank.py; sed -n '1,28p' build_k2-tank.py" in /home/claude-agent/forge-build/forge-assets/jobs/k2-tank-v1
 succeeded in 0ms:
  im=bpy.data.images.load(str(ROOT/p),check_existing=False);a=np.array(im.pixels[:],dtype=np.float32).reshape(im.size[1],im.size[0],4);arrays.append(a);bpy.data.images.remove(im)
 h,w,_=arrays[0].shape;out=np.concatenate([np.concatenate(arrays[3:],axis=1),np.concatenate(arrays[:3],axis=1)],axis=0)
 im=bpy.data.images.new(name,width=w*3,height=h*2);im.pixels.foreach_set(out.ravel());im.filepath_raw=str(ROOT/name);im.file_format='PNG';im.save()


def proof():
 # Required proof is strictly a fresh-scene import of both delivered binary files.
 bpy.ops.object.select_all(action='SELECT');bpy.ops.object.delete(use_global=False)
 bpy.ops.import_scene.gltf(filepath=str(ROOT/'k2-tank.glb'));a=list(sc.objects)
 bpy.ops.import_scene.gltf(filepath=str(ROOT/'k2-tank-damage.glb'));b=[o for o in sc.objects if o not in a]
 studio();names={o.name:o for o in a+b}
 for o in a+b:
  transform=o.matrix_world.copy();o.rotation_mode='XYZ';o.matrix_world=transform
 def visibility(oo,show):
  for o in oo:o.hide_render=not show
 def subtree(o):return [o]+list(o.children_recursive)
"""K2-style MBT, authored in metres. Blender 5.2, Cycles/OptiX.
Run: blender -b --python-exit-code 1 --python build_k2-tank.py
Optional -- --proof-only reloads exported GLBs for proof rendering.
CC0: Poly Haven rusty_metal_02, rust_coarse_01, rusty_metal_04, metal_plate, rubberized_track
"""
import bpy, bmesh, math, os, sys, json, struct, urllib.request, random
from pathlib import Path
from mathutils import Vector, Matrix
import numpy as np
ROOT=Path(__file__).resolve().parent
CACHE=ROOT/'textures'; CACHE.mkdir(exist_ok=True)
random.seed(28)
bpy.ops.object.select_all(action='SELECT'); bpy.ops.object.delete(use_global=False)
sc=bpy.context.scene; sc.render.engine='CYCLES'; sc.cycles.samples=24
prefs=bpy.context.preferences.addons['cycles'].preferences
prefs.compute_device_type='OPTIX'; prefs.get_devices()
for d in prefs.devices:d.use=d.type=='OPTIX'
sc.cycles.device='GPU'; sc.cycles.use_denoising=True
sc.render.image_settings.file_format='PNG'; sc.render.film_transparent=False
sc.world.color=(.24,.24,.24)
sc.view_settings.view_transform='AgX'
M={}; GROUPS={}; healthy=[]; damage=[]
PAINTS=[('forest green',[.10,.13,.08]),('olive drab',[.17,.17,.085]),('NATO green',[.075,.12,.075]),('desert tan',[.48,.36,.21]),('field grey',[.22,.25,.22]),('winter white',[.72,.75,.70])]

def download(asset,typ):
 p=CACHE/f'{asset}_{typ}_1k.jpg'
 if not p.exists():
  url=f'https://dl.polyhaven.org/file/ph-assets/Textures/jpg/1k/{asset}/{asset}_{typ}_1k.jpg'

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/bin/bash -lc "python3 - <<'PY'
p='build_k2-tank.py'
s=open(p).read().replace(\" # Required proof is strictly a fresh-scene import of both delivered binary files.\\n\", \" # Required proof is strictly a fresh-scene import of both delivered binary files.\\n # Let Blender's importer construct its version-specific full settings group.\\n prior=bpy.data.node_groups.get('glTF Material Output')\\n if prior:prior.name='_AuthoringOcclusion'\\n\")
open(p,'w').write(s)
PY
scp build_k2-tank.py gex44:/root/fal-author/k2-tank-v1/build_k2-tank.py
ssh gex44 '/root/blender-spike/blender-5.2.0-linux-x64/blender -b --python-exit-code 1 --python /root/fal-author/k2-tank-v1/build_k2-tank.py > /root/fal-author/k2-tank-v1/build.log 2>&1'" in /home/claude-agent/forge-build/forge-assets/jobs/k2-tank-v1
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/bin/bash -lc "sed -n '1,200p' /tmp/k2-validate.py" in /home/claude-agent/forge-build/forge-assets/jobs/k2-tank-v1
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import json,struct,sys,io
from pathlib import Path
import numpy as np
from PIL import Image

def read(p):
 b=Path(p).read_bytes();n=struct.unpack_from('<I',b,12)[0];d=json.loads(b[20:20+n]);return d,b[28+n:]
def acc(d,b,i):
 a=d['accessors'][i];v=d['bufferViews'][a['bufferView']];dt={5126:'<f4',5125:'<u4',5123:'<u2',5121:'u1'}[a['componentType']];n={'SCALAR':1,'VEC2':2,'VEC3':3,'VEC4':4}[a['type']];start=v.get('byteOffset',0)+a.get('byteOffset',0)
 return np.ndarray((a['count'],n),dtype=dt,buffer=b,offset=start,strides=(v.get('byteStride',np.dtype(dt).itemsize*n),np.dtype(dt).itemsize)).copy()
def matrix(n):
 if 'matrix' in n:return np.array(n['matrix']).reshape(4,4).T
 x,y,z,w=n.get('rotation',[0,0,0,1]);r=np.array([[1-2*y*y-2*z*z,2*x*y-2*z*w,2*x*z+2*y*w],[2*x*y+2*z*w,1-2*x*x-2*z*z,2*y*z-2*x*w],[2*x*z-2*y*w,2*y*z+2*x*w,1-2*x*x-2*y*y]])
 m=np.eye(4);m[:3,:3]=r@np.diag(n.get('scale',[1,1,1]));m[:3,3]=n.get('translation',[0,0,0]);return m

def run(path):
 d,b=read(path);ns=d['nodes'];parents={c:i for i,n in enumerate(ns) for c in n.get('children',[])};world={}
 def wm(i):
  if i not in world:world[i]=(wm(parents[i]) if i in parents else np.eye(4))@matrix(ns[i])
  return world[i]
 lo=np.array([np.inf]*3);hi=-lo;tri=0;bad=0;nonfinite=0
 for i,n in enumerate(ns):
  if 'mesh' not in n:continue
  for p in d['meshes'][n['mesh']]['primitives']:
   verts=acc(d,b,p['attributes']['POSITION']);vv=np.c_[verts,np.ones(len(verts))]@wm(i).T;lo=np.minimum(lo,vv[:,:3].min(0));hi=np.maximum(hi,vv[:,:3].max(0))
   ids=acc(d,b,p['indices']).ravel().reshape(-1,3);tri+=len(ids);area=np.linalg.norm(np.cross(verts[ids[:,1]]-verts[ids[:,0]],verts[ids[:,2]]-verts[ids[:,0]]),axis=1);bad+=int((area<1e-12).sum());nonfinite+=int((~np.isfinite(verts)).sum())
 ims=[]
 for im in d.get('images',[]):
  v=d['bufferViews'][im['bufferView']];a=Image.open(io.BytesIO(b[v.get('byteOffset',0):v.get('byteOffset',0)+v['byteLength']]))
  ims.append((im.get('name'),a.size));assert max(a.size)<=1024
  if 'orm' in im.get('name','').lower():assert max(a.size)<=512
 assert bad==0,('degenerate',bad)
 assert nonfinite==0
 names={n['name']:i for i,n in enumerate(ns)}
 paints=[m for m in d['materials'] if m['name']=='Paint'];assert len(paints)==1
 assert paints[0]['pbrMetallicRoughness']['baseColorFactor']==[.1,.13,.08,1]
 assert 'baseColorTexture' in paints[0]['pbrMetallicRoughness']
 assert not d.get('cameras') and not any('KHR_lights_punctual' in n.get('extensions',{}) for n in ns)
 roots=[ns[i]['name'] for i in d['scenes'][d.get('scene',0)]['nodes']]
 print(Path(path).name,json.dumps({'bytes':Path(path).stat().st_size,'triangles':tri,'degenerate':bad,'nodes':len(ns),'bounds_min':lo.tolist(),'bounds_max':hi.tolist(),'dimensions':(hi-lo).tolist(),'materials':[m['name'] for m in d['materials']],'images':ims,'roots':roots},indent=2))
 return d,names,world,roots,tri,hi-lo,lo
A,an,aw,ar,at,dim,lo=run(sys.argv[1]);B,bn,bw,br,bt,_,_=run(sys.argv[2])
assert 80000<=at<=140000 and bt<=110000
assert Path(sys.argv[1]).stat().st_size<=12000000
assert np.allclose(dim,[3.6,2.4,10.8],atol=.015),(dim)
assert abs(lo[1])<.0001
assert set(br)=={'Hull_Damage','Turret_Damage','Wreck_Hull','Wreck_Turret'}
for name in ['Hull','Turret','Gun','Barrel','Muzzle','MG','Track_L','Track_R','Hatch_Commander','Hatch_Driver','Hatch_Loader','Seat_Commander','Seat_Driver','Exhaust','Light_Head_L','Light_Head_R','Fx_Engine','Fx_Ammo','Fx_Hatch']:assert name in an,name
assert sum(n.startswith('Part_') for n in an)>=14
for n,i in bn.items():
 if n.startswith('Dmg_'):
  h='Part_'+n[4:];assert h in an;assert np.allclose(bw.get(i,np.eye(4))[:3,3],aw[an[h]][:3,3],atol=.0001),(n,'pivot mismatch')
assert len([n for n in bn if n.startswith('Scar_')])==8
for side in ['L','R']:
 wheels=[n for n in A['nodes'] if n['name'].startswith('Wheel_'+side)]
 assert len(wheels)==11
 assert sum(n.get('extras',{}).get('wheel_role')=='road' for n in wheels)==6
 assert sum(n.get('extras',{}).get('wheel_role')=='return' for n in wheels)==3
 assert all(n.get('scale',[1,1,1])==[1,1,1] for n in wheels)
for left,right in [('Turret_Damage','Turret'),('Wreck_Turret','Turret'),('Gun_Broken','Gun')]:
 assert np.allclose(bw[bn[left]][:3,3],aw[an[right]][:3,3],atol=.00001)
assert len(A['materials'])<=10
assert set(m['name'] for m in B['materials']) <= {'Paint','Burnt','Scars','TrackSteel','Rubber'}
import hashlib
for prop in ['baseColorTexture','metallicRoughnessTexture']:
 hashes=[]
 for path in sys.argv[1:3]:
  d,b=read(path);m=next(m for m in d['materials'] if m['name']=='Paint');ti=m['pbrMetallicRoughness'][prop]['index'];im=d['images'][d['textures'][ti]['source']];v=d['bufferViews'][im['bufferView']];blob=b[v.get('byteOffset',0):v.get('byteOffset',0)+v['byteLength']];hashes.append(hashlib.sha256(blob).hexdigest())
 assert hashes[0]==hashes[1],('Paint texture mismatch',prop)
print('CONTRACT PASS')

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/bin/bash -lc "ssh gex44 'tail -n 4 /root/fal-author/k2-tank-v1/build.log'; df -h ." in /home/claude-agent/forge-build/forge-assets/jobs/k2-tank-v1
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Filesystem      Size  Used Avail Use% Mounted on
/dev/sda1       150G  132G   13G  92% /

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/bin/bash -lc 'scp gex44:/root/fal-author/k2-tank-v1/final.png /tmp/k2-review-final.png
scp gex44:/root/fal-author/k2-tank-v1/side.png /tmp/k2-review-side.png' in /home/claude-agent/forge-build/forge-assets/jobs/k2-tank-v1
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/bin/bash -lc "ssh gex44 'tail -n 5 /root/fal-author/k2-tank-v1/build.log'" in /home/claude-agent/forge-build/forge-assets/jobs/k2-tank-v1
 succeeded in 542ms:
19:10:02 | INFO: Primitives created: 2
19:10:02 | INFO: Extracting primitive: Track_L
19:10:02 | WARNING: More than one shader node tex image used for a texture. The resulting glTF sampler will behave like the first shader node tex image.
19:10:02 | INFO: Primitives created: 2
19:10:02 | INFO: Extracting primitive: Track_R

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/bin/bash -lc "sed -n '648,680p' build_k2-tank.py; ls -lh" in /home/claude-agent/forge-build/forge-assets/jobs/k2-tank-v1
 succeeded in 0ms:
 print('PROOF_COMPLETE',flush=True)

if '--proof-only' in sys.argv:
 proof()
else:
 hull,turret,gun,barrel=build()
 budget(healthy,126000)
 export(healthy,'k2-tank.glb');ha=metrics(healthy)
 # Healthy image and clay establish the geometry before damage is constructed.
 studio();render('final.png',1920,1080,40)
 camera((12,-1.63,1.20),(0,-1.63,1.20),12.1);render('side.png',1920,1080,32)
 camera((10,-14,6),(0,-1.05,1.05),12.8)
 clay=bpy.data.materials.new('_Clay');clay.diffuse_color=(.35,.35,.35,1);clay.use_nodes=True;clay.node_tree.nodes.get('Principled BSDF').inputs['Base Color'].default_value=(.35,.35,.35,1)
 sc.view_layers[0].material_override=clay;render('clay.png',1920,1080,24);sc.view_layers[0].material_override=None
 twins=make_damage(hull,turret,gun,barrel)
 
 for o in damage:
  if o.type=='MESH':
   for slot in o.material_slots:
    if slot.material is None:slot.material=M['Burnt']
    if slot.material.name in ['Metal','Glass','Lamps']:slot.material=M['Scars']
    elif slot.material.name=='Interior':slot.material=M['Burnt']
 budget(damage,105000)
 export(damage,'k2-tank-damage.glb');da=metrics(damage)
 manifest={'schema':'tank-damage/v1','units':'metres','axes':{'forward':'+Z','up':'+Y','left':'+X'},'healthy':ha,'damaged':da,'paints':[{'name':n,'linearRGB':c} for n,c in PAINTS], 'damage':{'parts':[{'part':o.name,'twin':twins.get(o.name)} for o in healthy if o.name.startswith('Part_')],'scars':[o.name for o in damage if o.name.startswith('Scar_')],'broken':{'Track_L':'Track_L_Broken','Track_R':'Track_R_Broken','Gun':'Gun_Broken'},'wreck':['Wreck_Hull','Wreck_Turret']}}
 (ROOT/'nodes.json').write_text(json.dumps(manifest,indent=2))
 (ROOT/'NOTES.md').write_text('K2 Black Panther style MBT, metre scale, articulated and destructible; no insignia.\n'+f'Triangles: healthy {ha["triangles"]:,}; damage {da["triangles"]:,}.\n'+'Materials: Paint, Rubber, TrackSteel, Metal, Glass, Lamps, Interior; damage also Burnt and Scars.\n'+'Textures: Cycles-baked shared tiles; Paint 1024px, other maps 256–512px, ORM at most 512px.\n'+'Poly Haven CC0 ids: rusty_metal_02, rust_coarse_01, rusty_metal_04, metal_plate, rubberized_track; https://polyhaven.com/license .\n'+'Reference differences: simplified suspension internals and sensor internals; artistic battle damage; simplified fire-control optics and concealed running gear.\n')
 proof()
total 20M
-rw-rw-r-- 1 claude-agent claude-agent  11K Oct 11 16:26 PROMPT.txt
drwxrwxr-x 2 claude-agent claude-agent 4.0K Oct 11 17:02 __pycache__
-rw-rw-r-- 1 claude-agent claude-agent 314K Oct 11 17:10 astra.log
-rw-rw-r-- 1 claude-agent claude-agent  46K Oct 11 17:09 build_k2-tank.py
-rw-rw-r-- 1 claude-agent claude-agent 8.8K Oct 11 15:20 job.json
-rw-r--r-- 1 claude-agent claude-agent 9.6M Oct 11 17:03 k2-tank-damage.glb
-rw-r--r-- 1 claude-agent claude-agent 9.0M Oct 11 17:03 k2-tank.glb
-rw-rw-r-- 1 claude-agent claude-agent 540K Oct 11 15:22 sheet.jpg
-rw-rw-r-- 1 claude-agent claude-agent   42 Oct 11 15:22 sheet.log
-rw-rw-r-- 1 claude-agent claude-agent  954 Oct 11 15:20 sheet_prompt.txt
-rw-rw-r-- 1 claude-agent claude-agent   21 Oct 11 16:26 started.txt

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The front and side renders show the six-wheel running gear, sawtooth skirts, wedge turret and long gun in proportion. The final clean build is now finishing the imported damage-state and paint proofs.

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/bin/bash -lc "ssh gex44 'tail -n 5 /root/fal-author/k2-tank-v1/build.log'" in /home/claude-agent/forge-build/forge-assets/jobs/k2-tank-v1
 succeeded in 551ms:
RENDER _paint2.png
01:09.824  render           | Saved: '/root/fal-author/k2-tank-v1/_paint3.png'
RENDER _paint3.png
01:13.237  render           | Saved: '/root/fal-author/k2-tank-v1/_paint4.png'
RENDER _paint4.png

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/bin/bash -lc "ssh gex44 'tail -n 5 /root/fal-author/k2-tank-v1/build.log'" in /home/claude-agent/forge-build/forge-assets/jobs/k2-tank-v1
 succeeded in 556ms:
01:23.374  render           | Saved: '/root/fal-author/k2-tank-v1/pivots.png'
RENDER pivots.png
PROOF_COMPLETE

Blender quit

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/bin/bash -lc "scp gex44:/root/fal-author/k2-tank-v1/{k2-tank.glb,k2-tank-damage.glb,final.png,side.png,clay.png,paints.png,states.png,pivots.png,nodes.json,NOTES.md} ./
python3 /tmp/k2-validate.py k2-tank.glb k2-tank-damage.glb > /tmp/k2-final-validation.log
sha256sum build_k2-tank.py
ssh gex44 'sha256sum /root/fal-author/k2-tank-v1/build_k2-tank.py'" in /home/claude-agent/forge-build/forge-assets/jobs/k2-tank-v1
 succeeded in 13175ms:
09f1144106674831ace6517df923e6353266fa5962c9eefbe776d765cd39a6b6  build_k2-tank.py
09f1144106674831ace6517df923e6353266fa5962c9eefbe776d765cd39a6b6  /root/fal-author/k2-tank-v1/build_k2-tank.py

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/bin/bash -lc 'python3 /home/claude-agent/.agents/skills/blender-game-assets/scripts/audit_glb.py k2-tank-damage.glb --strict > /tmp/k2-final-damage-audit.json' in /home/claude-agent/forge-build/forge-assets/jobs/k2-tank-v1
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/bin/bash -lc 'python3 /home/claude-agent/.agents/skills/blender-game-assets/scripts/audit_glb.py k2-tank.glb --strict > /tmp/k2-final-audit.json' in /home/claude-agent/forge-build/forge-assets/jobs/k2-tank-v1
exec
/bin/bash -lc "python3 - <<'PY'
import json,struct
from pathlib import Path
for p in Path('.').glob('*.glb'):
 b=p.read_bytes();n=struct.unpack_from('<I',b,12)[0];d=json.loads(b[20:20+n]);print(p.name,len(b),'bytes')
 for m in d['materials']:
  assert 'occlusionTexture' in m,m['name']
 print('AO present in every material')
print(Path('/tmp/k2-final-validation.log').read_text()[-40:])
PY" in /home/claude-agent/forge-build/forge-assets/jobs/k2-tank-v1
 succeeded in 0ms:
k2-tank-damage.glb 10861836 bytes
AO present in every material
k2-tank.glb 10239192 bytes
AO present in every material

    "Wreck_Turret"
  ]
}
CONTRACT PASS


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Both GLBs now re-import successfully, and the six damage states and paint variants render correctly. Final sizes are 10.24 MB healthy and 10.86 MB damage; geometry, dimensions, node origins, texture limits and shared Paint data pass the contract checks.

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import json
for p in ['/tmp/k2-final-audit.json','/tmp/k2-final-damage-audit.json']:
 d=json.load(open(p));print(p, list(d));print(str(d)[-2400:])
PY" in /home/claude-agent/forge-build/forge-assets/jobs/k2-tank-v1
 succeeded in 0ms:
/tmp/k2-final-audit.json ['file', 'sha256', 'bytes', 'primitive_count', 'material_count', 'embedded_images', 'external_uris', 'primitives', 'duplicate_primitives', 'note', 'triangles', 'zero_area_triangles', 'nonfinite_attribute_components', 'findings']
, {'mesh': 'Wheel_R8', 'primitive': 1, 'triangles': 2172, 'zero_area_triangles': 0, 'nonfinite_attribute_components': 0}, {'mesh': 'Wheel_R8', 'primitive': 2, 'triangles': 738, 'zero_area_triangles': 0, 'nonfinite_attribute_components': 0}, {'mesh': 'Wheel_R9', 'primitive': 0, 'triangles': 390, 'zero_area_triangles': 0, 'nonfinite_attribute_components': 0}, {'mesh': 'Wheel_R9', 'primitive': 1, 'triangles': 2012, 'zero_area_triangles': 0, 'nonfinite_attribute_components': 0}, {'mesh': 'Wheel_R9', 'primitive': 2, 'triangles': 890, 'zero_area_triangles': 0, 'nonfinite_attribute_components': 0}, {'mesh': 'Wheel_R10', 'primitive': 0, 'triangles': 382, 'zero_area_triangles': 0, 'nonfinite_attribute_components': 0}, {'mesh': 'Wheel_R10', 'primitive': 1, 'triangles': 2164, 'zero_area_triangles': 0, 'nonfinite_attribute_components': 0}, {'mesh': 'Wheel_R10', 'primitive': 2, 'triangles': 746, 'zero_area_triangles': 0, 'nonfinite_attribute_components': 0}, {'mesh': 'Wheel_R11', 'primitive': 0, 'triangles': 490, 'zero_area_triangles': 0, 'nonfinite_attribute_components': 0}, {'mesh': 'Wheel_R11', 'primitive': 1, 'triangles': 1150, 'zero_area_triangles': 0, 'nonfinite_attribute_components': 0}, {'mesh': 'Wheel_R11', 'primitive': 2, 'triangles': 770, 'zero_area_triangles': 0, 'nonfinite_attribute_components': 0}], 'duplicate_primitives': [{'primitive': 'Part_EngineGrille_R[0]', 'same_as': 'Part_EngineGrille_L[0]'}, {'primitive': 'Part_Fender_FR[0]', 'same_as': 'Part_Fender_FL[0]'}, {'primitive': 'Part_Fender_RR[0]', 'same_as': 'Part_Fender_RL[0]'}, {'primitive': 'Part_Skirt_L7[0]', 'same_as': 'Part_Skirt_L1[0]'}, {'primitive': 'Part_Skirt_R7[0]', 'same_as': 'Part_Skirt_R1[0]'}, {'primitive': 'Part_TailLamp_R[0]', 'same_as': 'Part_TailLamp_L[0]'}, {'primitive': 'Part_ToolBox_R[0]', 'same_as': 'Part_ToolBox_L[0]'}, {'primitive': 'Part_TowCable_R[1]', 'same_as': 'Part_TowCable_L[1]'}, {'primitive': 'Track_R[0]', 'same_as': 'Track_L[0]'}, {'primitive': 'Track_R[1]', 'same_as': 'Track_L[1]'}, {'primitive': 'Part_Turret_Smoke_R[0]', 'same_as': 'Part_Turret_Smoke_L[0]'}], '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': 123626, 'zero_area_triangles': 0, 'nonfinite_attribute_components': 0, 'findings': ['duplicate_primitives']}
/tmp/k2-final-damage-audit.json ['file', 'sha256', 'bytes', 'primitive_count', 'material_count', 'embedded_images', 'external_uris', 'primitives', 'duplicate_primitives', 'note', 'triangles', 'zero_area_triangles', 'nonfinite_attribute_components', 'findings']
ponents': 0}, {'mesh': 'Gun.001', 'primitive': 0, 'triangles': 4022, 'zero_area_triangles': 0, 'nonfinite_attribute_components': 0}, {'mesh': 'Gun.001', 'primitive': 1, 'triangles': 254, 'zero_area_triangles': 0, 'nonfinite_attribute_components': 0}, {'mesh': 'Gun.001', 'primitive': 2, 'triangles': 20, 'zero_area_triangles': 0, 'nonfinite_attribute_components': 0}, {'mesh': 'Scar_Turret_Front', 'primitive': 0, 'triangles': 422, 'zero_area_triangles': 0, 'nonfinite_attribute_components': 0}, {'mesh': 'Scar_Turret_Front', 'primitive': 1, 'triangles': 360, 'zero_area_triangles': 0, 'nonfinite_attribute_components': 0}, {'mesh': 'Scar_Turret_L', 'primitive': 0, 'triangles': 422, 'zero_area_triangles': 0, 'nonfinite_attribute_components': 0}, {'mesh': 'Scar_Turret_L', 'primitive': 1, 'triangles': 360, 'zero_area_triangles': 0, 'nonfinite_attribute_components': 0}, {'mesh': 'Scar_Turret_R', 'primitive': 0, 'triangles': 422, 'zero_area_triangles': 0, 'nonfinite_attribute_components': 0}, {'mesh': 'Scar_Turret_R', 'primitive': 1, 'triangles': 360, 'zero_area_triangles': 0, 'nonfinite_attribute_components': 0}, {'mesh': 'Scar_Turret_Rear', 'primitive': 0, 'triangles': 422, 'zero_area_triangles': 0, 'nonfinite_attribute_components': 0}, {'mesh': 'Scar_Turret_Rear', 'primitive': 1, 'triangles': 360, 'zero_area_triangles': 0, 'nonfinite_attribute_components': 0}, {'mesh': 'Hull.001', 'primitive': 0, 'triangles': 41779, 'zero_area_triangles': 0, 'nonfinite_attribute_components': 0}, {'mesh': 'Turret.001', 'primitive': 0, 'triangles': 5523, 'zero_area_triangles': 0, 'nonfinite_attribute_components': 0}], 'duplicate_primitives': [{'primitive': 'Part_Skirt_L2.001[1]', 'same_as': 'Part_Skirt_L1.001[1]'}, {'primitive': 'Part_Skirt_L5.001[1]', 'same_as': 'Part_Skirt_L3.001[1]'}, {'primitive': 'Part_Skirt_L6.001[1]', 'same_as': 'Part_Skirt_L1.001[1]'}, {'primitive': 'Part_Skirt_L7.001[0]', 'same_as': 'Part_Skirt_L1.001[0]'}, {'primitive': 'Part_Skirt_L7.001[1]', 'same_as': 'Part_Skirt_L1.001[1]'}, {'primitive': 'Part_Skirt_R2.001[1]', 'same_as': 'Part_Skirt_R1.001[1]'}], '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': 103154, 'zero_area_triangles': 0, 'nonfinite_attribute_components': 0, 'findings': ['duplicate_primitives']}

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exec
/bin/bash -lc '/home/claude-agent/.claude/coord/coord --help' in /home/claude-agent/forge-build/forge-assets/jobs/k2-tank-v1
 succeeded in 0ms:
coord <verb> [args] — multi-session coordination (advisory)
  whoami | register "<task>" [--host gex44|ax42|local]
  check <host:path> [more...]            (exit 3 on conflict)
  claim <host:path> [--ttl 30m] [--note "..."] [--expect-md5 <sha>] [--owner <tag>]
  heartbeat
  release <host:path>... [--owner <tag>] [--force]
  release --all [--owner <tag>] [--force]
  note "<milestone>" | status | gc
Resources: EXACT file 'gex44:apps/x/f.py' or EXACT dir 'gex44:apps/x/'. No globs.

--owner <tag>       Tags a claim with a sub-identity (e.g. a subagent name or
                    a forge-agent task id) when several actors share one coord
                    token (sibling Claude subagents share ONE coord identity —
                    the ancestor-pid walk can't tell them apart). ALWAYS pass
                    it when you are one of several agents on the same session.
                    `release --owner <tag>` releases ONLY that tag's claims on
                    this token, leaving every other owner's claims (and every
                    other token's claims) untouched.
                    `whoami` lists the owner tags this token currently holds;
                    `status` shows the tag on every claim.

Owner-safety (2026-09-05, sibling-subagent hardening):
  - `release --all` with NO `--owner` REFUSES (exit 6) if this token holds
    ANY tagged claim — one foreign owner is already not yours to release, and
    that is exactly the bug (P2/P3, 09-03/04): a subagent's `release --all`
    silently dropped a SIBLING subagent's live claim. `--all --force` overrides
    and releases everyone's, with a warning naming the owners — a deliberate,
    named exception, never a default.
  - `release <path>...` with NO `--owner` REFUSES (exit 6) if any targeted
    claim carries an owner tag — name your own tag, or pass `--force` to
    release it anonymously by path.
  - `claim` with no `--owner`, on a token that already holds tagged claims,
    prints a one-line hint (never blocks) — you may be a second agent on a
    session that forgot to tag itself.
  LAW: an agent forked from a multi-agent task MUST claim --owner <task-tag>
  and release --owner <task-tag> — never `release --all` unless it is
  genuinely the only agent on the session.

--expect-md5 <sha>  Refuse the claim unless the file still matches the bytes
                    you read. A claim locks a FILE; it does NOT stop you
                    overwriting someone's work with a buffer you read an hour
                    ago. Pass the md5 of your copy and a stale base is caught
                    BEFORE you write. Exit 5 = stale base, 4 = could not verify
                    (fails closed — omit the flag to claim unchecked).
                      md5=$(ssh root@5.9.32.176 md5sum /home/claude-agent/\
                            forge-monorepo/apps/x/f.py | cut -d' ' -f1)
                      coord claim ax42:apps/x/f.py --expect-md5 "$md5"

hook: PreToolUse
hook: PreToolUse
hook: PreToolUse
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exec
/bin/bash -lc "python3 - <<'PY'
from pathlib import Path
import json,struct
from PIL import Image
for f in ['final.png','side.png','clay.png','states.png','paints.png','pivots.png']:
 im=Image.open(f);print(f,im.size)
d=json.load(open('nodes.json'));print('manifest:',d.keys());print('Parts:',len(d['damage']['parts']),'twins:',sum(bool(x['twin']) for x in d['damage']['parts']))
print('Notes lines:',len(Path('NOTES.md').read_text().splitlines()))
for p in Path('__pycache__').glob('build_k2-tank*.pyc'):p.unlink()
try:Path('__pycache__').rmdir()
except OSError:pass
PY" in /home/claude-agent/forge-build/forge-assets/jobs/k2-tank-v1
 succeeded in 0ms:
final.png (1920, 1080)
side.png (1920, 1080)
clay.png (1920, 1080)
states.png (2400, 900)
paints.png (2400, 900)
pivots.png (1280, 720)
manifest: dict_keys(['schema', 'units', 'axes', 'healthy', 'damaged', 'paints', 'damage'])
Parts: 51 twins: 22
Notes lines: 6

hook: PreToolUse
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exec
/bin/bash -lc "/home/claude-agent/.claude/coord/coord note 'K2 tank delivered from clean Blender run: healthy 123626 triangles / 10.24 MB, damage 103154 / 10.86 MB; imported state, paint and pivot proofs reviewed; source hash verified.'
/home/claude-agent/.claude/coord/coord release local:/home/claude-agent/forge-build/forge-assets/jobs/k2-tank-v1/ gex44:/root/fal-author/k2-tank-v1/" in /home/claude-agent/forge-build/forge-assets/jobs/k2-tank-v1
 succeeded in 0ms:
noted
released 2

codex
Delivered from a clean Blender build:

- [Healthy GLB](./k2-tank.glb): 123,626 triangles, 10.24 MB.
- [Damage GLB](./k2-tank-damage.glb): 103,154 triangles, 10.86 MB.
- [Final render](./final.png) · [Damage states](./states.png) · [Six paints](./paints.png)
- [Build script](./build_k2-tank.py) · [Node manifest](./nodes.json) · [Notes](./NOTES.md)

Includes 51 removable parts and 22 damage twins. Export limits and pivot checks passed; rendered proofs reviewed. Suspension and optics internals remain simplified.

Workspace disk has approximately 13 GB free.
tokens used
277,317
Delivered from a clean Blender build:

- [Healthy GLB](./k2-tank.glb): 123,626 triangles, 10.24 MB.
- [Damage GLB](./k2-tank-damage.glb): 103,154 triangles, 10.86 MB.
- [Final render](./final.png) · [Damage states](./states.png) · [Six paints](./paints.png)
- [Build script](./build_k2-tank.py) · [Node manifest](./nodes.json) · [Notes](./NOTES.md)

Includes 51 removable parts and 22 damage twins. Export limits and pivot checks passed; rendered proofs reviewed. Suspension and optics internals remain simplified.

Workspace disk has approximately 13 GB free.