{"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-ayna2lei","versions":[{"created_at":"2026-06-10T22:52:29Z","element_count":85,"note":"legacy fix: 平屋floors2→1 / rooms設備語除去 / jpy96334560→quote22367202 (旧世代データ是正・実験済u-house-890wnsao・rollback=m5:legacy_fix_rollback.jsonl)","saved_by":"mcp","sha256":"c7e854379f0d454281f74760b9cbad08a065f8941fd503e339c0fd066caee474","version":20},{"created_at":"2026-06-10T13:34:22Z","element_count":85,"note":"backfill: 延床=居室床スラブ実面積92.5㎡(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":"7c01220652869f6e2bde9f1ccc88cb06e904606c94111f2334c1991198061287","version":7},{"created_at":"2026-06-10T12:48:35Z","element_count":72,"note":"5軸GA polish 59->96 by M5 (autonomous)","saved_by":"mcp","sha256":"3afbf982930971c5baf85a8aae99b9e1701a4a88da7d3aa3aac9e301ddabfe70","version":4}]}