{
  "id": "DEMO-PARTITION-01",
  "provenance": "Independently authored synthetic example for aherrera.mx; not a client plan or Groma engine export.",
  "source": { "sheet": "DEMO-A01", "rooms": ["ROOM-A", "ROOM-B"] },
  "units": { "length": "ft", "area": "ft2" },
  "input": { "wallLengthFt": 10, "heightFt": 8, "openingFt": 3, "drywalledFaces": 2 },
  "result": { "solidLengthFt": 7, "faceAreaSqFt": 56, "totalBoardAreaSqFt": 112, "bridgeBoardAreaSqFt": 0 },
  "limitations": [
    "One shared partition only; outer walls and ceilings are excluded.",
    "Zero-thickness illustrative plan; the opening bridge closes topology and contributes no board area.",
    "Headers, reveals, board layers, waste, framing, pricing and purchase quantities are excluded.",
    "No PDF extraction, private engine execution, stored approval or Minera handoff takes place."
  ]
}