{"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-rl3wvcah","versions":[{"created_at":"2026-06-10T22:52:35Z","element_count":77,"note":"legacy fix: 平屋floors2→1 / rooms設備語除去 / jpy102533759→quote19393656 (旧世代データ是正・実験済u-house-890wnsao・rollback=m5:legacy_fix_rollback.jsonl)","saved_by":"mcp","sha256":"7654f3b83dc9ac6381e669aa3065ef255bc5152acfd1f46354da9d1b82b4e815","version":18},{"created_at":"2026-06-10T13:55:14Z","element_count":72,"note":"5軸GA polish 66->97 by M5 (autonomous)","saved_by":"mcp","sha256":"59935d20ec1032768fe612ed3270df77ad14ffdd341633c0cd92b9a9b3bdcfc1","version":5},{"created_at":"2026-06-10T13:46:23Z","element_count":50,"note":"backfill: 延床=居室床スラブ実面積74.1㎡(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":"1168675e74007d7c087a1318cb25885b77d1b8e751d1f03835be6186ef7edbce","version":4}]}