{"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-ulirmyek","versions":[{"created_at":"2026-06-10T22:52:36Z","element_count":77,"note":"legacy fix: 平屋floors2→1 / rooms設備語除去 (旧世代データ是正・実験済u-house-890wnsao・rollback=m5:legacy_fix_rollback.jsonl)","saved_by":"mcp","sha256":"4aec71da6f2ad1c1bdf0f6ab93aec8cb5742f2b54f51a9865d2baa9756e3a6b0","version":18},{"created_at":"2026-06-10T14:13:18Z","element_count":84,"note":"5軸GA polish 66->97 by M5 (autonomous)","saved_by":"mcp","sha256":"e1684aa6479b2006483653725e6522b23244de814450234874210dd92201e983","version":7},{"created_at":"2026-06-10T13:47:13Z","element_count":50,"note":"backfill: 延床=居室床スラブ実面積74.1㎡(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":"dd11b8404d3f312635f6b467d6579b00342344aa5d09ea1422fc90620bc0ebe8","version":4}]}