{
  "kind": "building",
  "id": "03-economic",
  "role": "economic",
  "name": "Voidfold Exchange",
  "function": "A cooperative exchange gathers traders beneath an elevated ring of shared storage vaults, with market entrances on all four sides.",
  "shape_and_silhouette": "Four forked corner piers lift a hollow square crown whose three stepped tiers widen upward around a continuous open central void.",
  "visual_description": "Black stepped vaults combine square recursive portals, triangular Sierpinski screen cassettes, violet four-leaf shutters and patched glazing above white forked supports, with cyan-lit bearing sockets and short crystalline chimes.",
  "production_notes": "A mature cooperative combines the older cubic void tradition with modular crystalline market supports, consolidating storage overhead so every ground-level face can participate in trade.",
  "departure": "An inverted stepped crown, sheltered perimeter trading and a continuous central light well give the economic building equal architectural presence from every approach.",
  "shared_traits": [
    "Hollow Square Portal at each public entrance",
    "Sierpinski Screen Cassette in the raised vault bands",
    "Violet Recursion Shutter beside the portals",
    "Inherited Patch Panel on every side with varied salvage patterns",
    "Continuous Branch Joint and Nested Service Foot at the corner supports",
    "Stepped Hollow Parapet and Prismatic Chime Edge around the crown"
  ],
  "constraints": [
    "Four fully designed public fa\u00e7ades with a centered passage on each",
    "Four corner supports carry every elevated tier through visible beams",
    "Continuous open square light well through every roof tier",
    "No rear storage bar, blank service wall, pitched shop roofs or floating parts",
    "Maintain a broad medium-height silhouette distinct from the tall civic monument"
  ],
  "idle_animation": "A short cyan transaction pulse passes between recessed counter lights around the four sides while one small violet hatch tilts slightly.",
  "day_night": "Day reveals deep perforations and reclaimed violet glazing; night makes the suspended vault undersides and nested square openings glow cyan around a darker central void.",
  "version": 3,
  "revision": "Increase the approved motif vocabulary across all four faces while retaining the open central light well, four public entrances and three crown tiers widening upward.",
  "image": "renders/render-v003.webp",
  "approved": false,
  "city_snapshot": "renders/city-v001.md",
  "motif_snapshot": "renders/motifs-v001.md"
}