Change the 3D assets

Rules: SCENE.md (budgets, animation rules, no logos), TESTING.md (asset validation), docs/graphics-contract.md (the contract both sides follow).

1. Contract first. If anchors, roles, clip names, coordinates or budgets change, edit docs/graphics-contract.md additively and plan the renderer side (packages/web/src/app/manifest.ts and friends) in the same change. Extend the fixture tests in assets/validate.test.ts red-first.
2. Edit the scripts in assets/blender/** (modules, furniture kit, materials, themes, character). Never edit a .glb by hand or export from the GUI: every shipped file comes from make assets.
3. Iterate fast: make assets-draft (low bake samples, small lightmaps, gitignored output).
4. Look at it:
   • With the Blender MCP connected (optional: claude mcp add blender --scope user -- uvx blender-mcp, then Connect in Blender's MCP sidebar), use get_scene_info and viewport screenshots to review proportions, materials and lighting. Use only the Poly Haven integration; leave Hyper3D and Sketchfab off.
   • make asset-previews renders Eevee stills of every module into assets/previews/. Read the images.
5. Test:
   • make assets-test: Blender-side checks (naming grammar, counts, loop pose continuity, ≤ 4 weights, applied transforms, no text objects except the runtime sign).
   • pnpm vitest run --project unit assets/validate.test.ts: gltf-validator 0 errors, budgets, anchors, nav connectivity, clips, ≤ 45 MB.
6. Final build: make assets (final bake). Then /run-office and make screenshots to check the assets in the app, and make perf if triangle counts or materials changed (≥ 55 fps at Medium with 150 agents).
7. License and branding checklist before handing off:
   • Every new texture or HDRI is CC0 (Poly Haven), pinned by asset id and SHA-256, and listed in assets/LICENSES.md with its URL.
   • No logos, trademarks or real company names anywhere (textures, decals, text objects, material names). Wing signs stay blank planes; the runtime draws the provider id.
   • No AI-generated or Sketchfab models.
8. Git LFS: .glb, lightmap .png and .hdr files under packages/web/public/assets/, plus assets/out/** and assets/previews/**, are LFS files (.gitattributes). Make sure git lfs install has run before the human commits. Prepare the commit commands; never commit yourself.

2D RPG mode: see docs/2d-architecture.md. The pure logic is in web/src/app/pixel/*, the Canvas2D drawing in web/src/adapters/pixel/*, the art in assets/pixel/src (make pixel-assets), and the floor plans come from make assets-plan. Check both modes with pixel.spec.ts and the existing 3D specs.