{"note":"bim_versions 導入後の保存のみ記録 (それ以前は bim_canonical 上書きで履歴なし)","ok":true,"slug":"u-house-4icqao8r","versions":[{"created_at":"2026-06-10T22:52:36Z","element_count":65,"note":"legacy fix: 平屋floors2→1 / rooms設備語除去 / jpy61441200→quote21955100 (旧世代データ是正・実験済u-house-890wnsao・rollback=m5:legacy_fix_rollback.jsonl)","saved_by":"mcp","sha256":"e216cf8d8199f0a8a52bb38c536f4c96c5906a4754c0ed5076a9a9a59471a916","version":18},{"created_at":"2026-06-10T14:12:53Z","element_count":84,"note":"5軸GA polish 69->97 by M5 (autonomous)","saved_by":"mcp","sha256":"217d3b10b58671c94f629f45ffdc9915b7b59aa8269b093b901632801eec064c","version":7},{"created_at":"2026-06-10T13:47:38Z","element_count":46,"note":"backfill: 延床=居室床スラブ実面積90.0㎡(基礎/屋外/ロフト除外)。設備数量/コスト過大の是正","saved_by":"mcp","sha256":"a64db9a98889f2b0b2544edccb0cf66127cd67bb4321d0b987768926f6b062a2","version":4}]}