{"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-a6uwrat4","versions":[{"created_at":"2026-07-13T10:49:13Z","element_count":69,"note":"5軸GA polish 43->94 by M5 (autonomous)","saved_by":"mcp","sha256":"ae721d3a3dde7d9e6dcf5c949a33b64c06727180d449ca31087b54538c13d939","version":3},{"created_at":"2026-07-13T10:35:25Z","element_count":126,"note":"loop3: 設計時延床 85.0㎡ を投入 (見積過大の根治)","saved_by":"mcp","sha256":"82cd278ed9af3bb14abb4222ca659eeb57f61f9010b378ae55c49579212fc85a","version":2},{"created_at":"2026-07-13T10:35:24Z","element_count":126,"note":"言葉から生成: LDK+主寝室+子供室2+浴室+収納","saved_by":"mcp:create","sha256":"","version":1}]}