Noir detective office: typewriters, banker's lamps, filing cabinets, venetian blinds and wainscot

[MathisPD]

Adds a 1940s municipal detective squad room theme to the office:

• Blender Model & Props (src/client/models/noir.glb):
  • Banker's lamp with brass base/stem and emissive green glass shade
  • Portable typewriter with brass keys and paper in the carriage
  • Leather desk blotter with brass corner rules and inkwell
  • Four-drawer steel filing cabinets with brass pulls and rotary telephone
  • Floor case files and desk file folders
  • Venetian blinds tailored to window drops
• World Placement (src/client/world/office/noir.ts):
  • Desk fixture places lamps, blotters, and typewriters in free corners clear of laptops and PR celebrations
  • Cabinets aligned along west and south walls with colliders and wall clearances
  • Dark wood wainscot dado panelling and chair rail surrounding the office
  • Venetian blinds installed in all ground floor windows
• Palette & Materials:
  • Rich dark walnut desk surfaces and dark desk legs
  • Muted period chair upholstery (oxblood, olive, tobacco, charcoal, navy, tan)
  • Alternating block parquet flooring pattern (paintPlanks)
• Tests & Lab:
  • tests/noir-model.test.ts passes all 11 assertions (bounds, placements, clearance, tri counts)
  • Lab previews in src/client/lab/props.ts (noir_desk, noir_cabinets, noir_blind, noir_row)