{"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-pt4avzya","versions":[{"created_at":"2026-06-10T22:52:34Z","element_count":85,"note":"legacy fix: 平屋floors2→1 / rooms設備語除去 / jpy72816480→quote20039150 (旧世代データ是正・実験済u-house-890wnsao・rollback=m5:legacy_fix_rollback.jsonl)","saved_by":"mcp","sha256":"cc9b508df98d727724ffaee02d069f642e07a528ecabc273769615e0a81f6bb3","version":19},{"created_at":"2026-06-10T13:55:12Z","element_count":84,"note":"5軸GA polish 66->98 by M5 (autonomous)","saved_by":"mcp","sha256":"f132196ba5134da43fdef8839b3ccb821d623ae94119e2d57457d89a74119358","version":6},{"created_at":"2026-06-10T13:45:23Z","element_count":54,"note":"backfill: 延床=居室床スラブ実面積78.3㎡(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":"c0b8181e7b77b40a15d42eddc58cb725c27ab0a6d7b4941745735c599a9ae25f","version":5}]}