{"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-zkfqf9tz","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":"16442546621317e1588eb779b560ac706d1d46803df1a5cd0e287d63226122fc","version":19},{"created_at":"2026-06-10T13:56:53Z","element_count":71,"note":"5軸GA polish 66->95 by M5 (autonomous)","saved_by":"mcp","sha256":"d6c9e9c6780083bdd564578ea1d1ea2288daf642763e43e0ded5ad2b661ab4ab","version":6},{"created_at":"2026-06-10T13:46:50Z","element_count":50,"note":"backfill: 延床=居室床スラブ実面積76.0㎡(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":"a5b0d4435e5d04057ecd49132ed989de80923a8b5ca2f1e2b25eded1b316a039","version":5},{"created_at":"2026-06-10T13:03:52Z","element_count":54,"note":"fix: 延床=居室床スラブ実面積92.3㎡に補正(基礎/デッキ/ロフトを除外)。0㎡表示と設備数量過大(6AC等)の是正検証","saved_by":"mcp","sha256":"fa62a391fa9945c9ab7ae8cd1f815bcaa871884ba5f7c849ffccf5ccc5c0a49c","version":2}]}