{"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-h7yvbylf","versions":[{"created_at":"2026-06-13T15:27:13Z","element_count":89,"note":"5軸GA polish 41->94 by M5 (autonomous)","saved_by":"mcp","sha256":"028faf8faf89ec2ab62dbafdfad3bb355f337640054e85abcbf3e59a9d69e24c","version":3},{"created_at":"2026-06-13T15:21:59Z","element_count":85,"note":"loop3: 設計時延床 80.0㎡ を投入 (見積過大の根治)","saved_by":"mcp","sha256":"c32a6e03eebabd9ebdf1097eb5bb7957fd5484a29a8e7559df6c01f29cefbff2","version":2},{"created_at":"2026-06-13T15:21:58Z","element_count":85,"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}]}