{"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-xewmd6rf","versions":[{"created_at":"2026-06-10T22:50:41Z","element_count":62,"note":"legacy fix: 平屋floors2→1 / rooms設備語除去 / jpy81611913→quote23187396 (旧世代データ是正・実験済u-house-890wnsao・rollback=m5:legacy_fix_rollback.jsonl)","saved_by":"mcp","sha256":"89318ed0cae268debbed6be97078409aeb301ad6fffe9b0eec63958d934e558a","version":25},{"created_at":"2026-06-10T13:08:55Z","element_count":62,"note":"backfill: 延床=居室床スラブ実面積106.2㎡(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":"402f066666ec7c3c4b135f6ee6a7887f01eee3b0826ab3c9e528fc85a562de6b","version":11},{"created_at":"2026-06-10T07:42:34Z","element_count":83,"note":"5軸GA polish 54->98 by M5 (autonomous)","saved_by":"mcp","sha256":"0b8c98911e1314f72bd146c54cb31d0f8116af7b40d237de644cb60190f99fca","version":2}]}