{"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-n5ku37yz","versions":[{"created_at":"2026-06-10T22:52:26Z","element_count":85,"note":"legacy fix: 平屋floors2→1 / rooms設備語除去 / jpy73729440→quote24422872 (旧世代データ是正・実験済u-house-890wnsao・rollback=m5:legacy_fix_rollback.jsonl)","saved_by":"mcp","sha256":"a6c6f1ac3b39c55bc0fa9e44e21b3ccd45ffd8db87354b2023bf707a6d3b9849","version":22},{"created_at":"2026-06-10T22:00:36Z","element_count":54,"note":"revert: houki rescan NG -> restore pre-polish elements (M5 2026-06-11)","saved_by":"mcp","sha256":"82c6b9fcdf2293a08ef439fd8ccf2c2432ce79f62b3f240a5403fe2913d045f9","version":16},{"created_at":"2026-06-10T13:31:58Z","element_count":85,"note":"backfill: 延床=居室床スラブ実面積103.4㎡(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":"49d31939f6559776e517590610b85dd579b032a88d2d350993061212397719fd","version":7},{"created_at":"2026-06-10T12:16:03Z","element_count":84,"note":"5軸GA polish 54->97 by M5 (autonomous)","saved_by":"mcp","sha256":"550f76341095cae82d2aca5572b1d3f83004e099840383504c6f481ea8bab6cb","version":3}]}