{"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-p1zxzjeq","versions":[{"created_at":"2026-06-10T22:57:03Z","element_count":85,"note":"legacy fix: 平屋floors2→1 / rooms設備語除去 / jpy102533759→quote24371566 (旧世代データ是正・実験済u-house-890wnsao・rollback=m5:legacy_fix_rollback.jsonl)","saved_by":"mcp","sha256":"b568676131bc1aa39215e9bdb998109f5110c9e1005802c87370a4f7de14bc11","version":9},{"created_at":"2026-06-10T19:02:39Z","element_count":72,"note":"5軸GA polish 54->97 by M5 (autonomous)","saved_by":"mcp","sha256":"5fbf2ed6ac4f0b6cee4c75b18891995b9c3d4409acc976744c3dd096b3b9d97d","version":2}]}