{"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-jly1dfaq","versions":[{"created_at":"2026-06-10T22:52:27Z","element_count":85,"note":"legacy fix: 平屋floors2→1 / rooms設備語除去 / jpy102533759→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":"06d1b77f7587fd80e944dd0c1b775751e0539e9b665510b693eb3207708e2f9a","version":21},{"created_at":"2026-06-10T13:32:34Z","element_count":85,"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":"28d69fe6ea73689d2523a349843f3a1b32867303bf5a19b1c0807d376572651a","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":"e18979c053089c25439b6bbff8bcc2c76a436e5123f6d6290f2e2b114183317f","version":3}]}