Build modern 12.5 m intercity touring coach: high floor, tinted panoramic windows, luggage bays along the sides, three axles (tag axle behind the drive axle), one front door and one middle door (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/intercity-coach-v1/<script>.py
(first `ssh gex44 mkdir -p /root/fal-author/intercity-coach-v1`, scp scripts and any textures to gex44:/root/fal-author/intercity-coach-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: 12.5 m long, 2.55 m wide, 3.70 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: 70k to 130k triangles, at most 8 materials, texture images at most 2048 px, GLB at most 12 MB.

Export contract (glTF binary .glb, Y up, metres): Front toward +Z, up = +Y, +X = the vehicle's LEFT side, centred on X = 0; origin (0,0,0) on the ground plane midway between the front and rearmost axles (Forge Garage contract v2). Tyres touch y = 0. 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 one baked texture set between parts where you can. Separate named mesh nodes: Body (painted shell and everything fixed to it), Wheel_FL, Wheel_FR, Wheel_RL, Wheel_RR (tyre + rim + brake disc, origin exactly at the wheel centre so a game spins it about X and steers the front ones about Y), SteeringWheel (origin at its hub). Empty nodes (no mesh): Seat_Driver (driver hip point), Door_Front (where passengers board), Exhaust, Light_Head_L, Light_Head_R, Light_Tail_L, Light_Tail_R. A simple but believable interior must be visible through the glass: seats, dashboard, steering wheel, door cards, no empty hollow shell. Each passenger door leaf is its own mesh node named Door_1, Door_2, ... (front to back, origin on its hinge or slide line) so a game can open it. Rows of seats, handrails and the driver cab are visible through the glass. Windows: one material named "Glass" (alpha BLEND, tinted, low roughness, real thickness not needed). Lamps: one material named "Lamps" with emissive (headlights warm white, tail and brake lights red, indicators amber; emission strength modest, games raise it). PAINT CONTRACT (this is how games get colour variants of one model): the body colour lives in ONE material named exactly "Paint". Its base colour TEXTURE holds only light neutral detail (near white, with grey grime, dust and wear baked in) and its baseColorFactor holds the paint colour; default factor = [0.85, 0.85, 0.86] (pearl white). A game recolours the vehicle by changing that factor, so nothing else (rubber, chrome, glass, lights, interior, decals) may use the Paint material. Give Paint a clearcoat (KHR_materials_clearcoat 1.0, roughness about 0.05) if it is glossy paint. Add Wheel_RL2 and Wheel_RR2 for the tag axle; the origin is midway between the front axle and the rearmost axle. In nodes.json add "paints": six good-looking real paint colours for this model as linear RGB triples (the default first), and render paints.png: a 3x2 grid of the same 3/4 view in those six paints (EEVEE or low-sample Cycles is fine) to prove the recolour works. Pace: deliver a first complete GLB within about 25 minutes, then use what is left of about 45 minutes to improve what the renders show is weakest. Use Cycles with the GPU (OptiX/CUDA) and modest samples for bakes and renders. No logos, badges or readable text anywhere, and do not copy any real manufacturer's signature grille or lamp shape exactly: keep the sheet's proportions and detail level with an original face. 
Deliver in this directory: intercity-coach.glb; build_intercity-coach.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.