{"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-7ncd5xip","versions":[{"created_at":"2026-06-10T22:52:33Z","element_count":63,"note":"legacy fix: 平屋floors2→1 / rooms設備語除去 / jpy72816480→quote20437541 (旧世代データ是正・実験済u-house-890wnsao・rollback=m5:legacy_fix_rollback.jsonl)","saved_by":"mcp","sha256":"ac0950c6ded8f8994713f819785c7b93afdf2fc7bb770e19bf1a1ec34c7f8350","version":19},{"created_at":"2026-06-10T13:44:57Z","element_count":63,"note":"backfill: 延床=居室床スラブ実面積90.0㎡(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":"3099572d8f95f929b2eb0cfaa81482ba05da525bc8dfccd34884f303e752760b","version":6},{"created_at":"2026-06-10T13:22:24Z","element_count":83,"note":"5軸GA polish 56->98 by M5 (autonomous)","saved_by":"mcp","sha256":"3b4098ad6bbe3ff3064885f8bb556e1c090b83afa49e08ad3b18b5d88f143069","version":3}]}