{"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-3cln1j65","versions":[{"created_at":"2026-06-11T00:14:57Z","element_count":84,"note":"5軸GA polish 57->98 by M5 (autonomous)","saved_by":"mcp","sha256":"eb7b2cba7b7a32e6c2370730ddb5e8fd50f594ae8576ff2ca8bad466ba175628","version":13},{"created_at":"2026-06-10T23:09:54Z","element_count":54,"note":"legacy fix: rooms設備語除去 (旧世代データ是正・実験済u-house-890wnsao・rollback=m5:legacy_fix_rollback.jsonl)","saved_by":"mcp","sha256":"58364cb172683ddb3a62aecb360ec36d5e2ff20ead4b121b8dcc730d29b9424a","version":7}]}