{
  "name": "イエローハット川口",
  "usage": "commercial",
  "floor": {"name": "1F", "level": 0, "height": 4500, "ceiling_height": 3200},
  "walls": [
    {"symbol": "EW-S", "x1": 0, "y1": 0, "x2": 43500, "y2": 0, "thickness": 200, "kind": "exterior"},
    {"symbol": "EW-N", "x1": 0, "y1": 17000, "x2": 43500, "y2": 17000, "thickness": 200, "kind": "exterior"},
    {"symbol": "EW-W", "x1": 0, "y1": 0, "x2": 0, "y2": 17000, "thickness": 200, "kind": "exterior"},
    {"symbol": "EW-E", "x1": 43500, "y1": 0, "x2": 43500, "y2": 17000, "thickness": 200, "kind": "exterior"},
    {"symbol": "PW-1", "x1": 13000, "y1": 0, "x2": 13000, "y2": 17000, "thickness": 150, "kind": "partition"},
    {"symbol": "PW-2", "x1": 13000, "y1": 9500, "x2": 20500, "y2": 9500, "thickness": 150, "kind": "partition"},
    {"symbol": "PW-3", "x1": 20500, "y1": 0, "x2": 20500, "y2": 17000, "thickness": 150, "kind": "partition"},
    {"symbol": "PW-4", "x1": 13000, "y1": 13500, "x2": 20500, "y2": 13500, "thickness": 150, "kind": "partition"},
    {"symbol": "PW-5", "x1": 16500, "y1": 9500, "x2": 16500, "y2": 13500, "thickness": 150, "kind": "partition"},
    {"symbol": "PW-6", "x1": 20500, "y1": 13000, "x2": 27000, "y2": 13000, "thickness": 150, "kind": "partition"},
    {"symbol": "PW-7", "x1": 27000, "y1": 13000, "x2": 27000, "y2": 17000, "thickness": 150, "kind": "partition"},
    {"symbol": "PW-8", "x1": 27000, "y1": 9500, "x2": 27000, "y2": 13000, "thickness": 150, "kind": "partition"},
    {"symbol": "PW-9", "x1": 20500, "y1": 9500, "x2": 27000, "y2": 9500, "thickness": 150, "kind": "partition"}
  ],
  "spaces": [
    {"name": "自動車整備工場", "use_type": "machine-room", "is_habitable": false, "boundary": [{"x":0,"y":0},{"x":13000,"y":0},{"x":13000,"y":14000},{"x":0,"y":14000}]},
    {"name": "倉庫", "use_type": "warehouse", "is_habitable": false, "boundary": [{"x":13000,"y":9500},{"x":20500,"y":9500},{"x":20500,"y":17000},{"x":13000,"y":17000}]},
    {"name": "事務室＋女子更衣室", "use_type": "office", "is_habitable": true, "boundary": [{"x":13000,"y":0},{"x":20500,"y":0},{"x":20500,"y":9500},{"x":13000,"y":9500}]},
    {"name": "WC＋廊下", "use_type": "toilet", "is_habitable": false, "boundary": [{"x":20500,"y":13000},{"x":27000,"y":13000},{"x":27000,"y":17000},{"x":20500,"y":17000}]},
    {"name": "タイヤ売場兼ポーチ", "use_type": "sales-floor", "is_habitable": true, "boundary": [{"x":20500,"y":9500},{"x":27000,"y":9500},{"x":27000,"y":13000},{"x":20500,"y":13000}]},
    {"name": "店舗 (売場)", "use_type": "sales-floor", "is_habitable": true, "boundary": [{"x":20500,"y":0},{"x":43500,"y":0},{"x":43500,"y":17000},{"x":27000,"y":17000},{"x":27000,"y":9500},{"x":20500,"y":9500}]}
  ],
  "notes": "スケール: 43500mm × 17000mm = 739.5m² 完全一致。室配置は凡例番号 ①〜⑥ の面積合計 (391.25+55+16.65+31.45+62.4+182.75=739.5) から LLM 建築家が再構成。"
}