{"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-08jg0kge","versions":[{"created_at":"2026-06-10T23:23:54Z","element_count":71,"note":"5軸GA polish 54->96 by M5 (autonomous)","saved_by":"mcp","sha256":"088c56f2d702d5ddb6a72fa280cee434fcefe2be1d56a1d967634ffce0022cd4","version":10},{"created_at":"2026-06-10T23:07:48Z","element_count":44,"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":"7cff5981beaacb9d70d2bc7544dd923362c39305a5e96728712db8e76b872dbd","version":7}]}