{"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-67kzogqi","versions":[{"created_at":"2026-06-10T22:52:27Z","element_count":66,"note":"legacy fix: 平屋floors2→1 / rooms設備語除去 / jpy102533759→quote21475211 (旧世代データ是正・実験済u-house-890wnsao・rollback=m5:legacy_fix_rollback.jsonl)","saved_by":"mcp","sha256":"b51eb8ae37b0402c1c165fdf88727d8b4952fdc574919da19a27fcd40c55c91d","version":21},{"created_at":"2026-06-10T13:32:55Z","element_count":66,"note":"backfill: 延床=居室床スラブ実面積93.5㎡(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":"fd3892a35145879748970f3c9de80e4fa0d1138d8b356e16ca72578b1505750d","version":7},{"created_at":"2026-06-10T12:16:02Z","element_count":72,"note":"5軸GA polish 60->97 by M5 (autonomous)","saved_by":"mcp","sha256":"ac3def35b2dce9f8abc55cad3ec89b3f37493e0463fb4b36aceb21a9fd352484","version":3}]}