{"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-j8as56lw","versions":[{"created_at":"2026-06-13T16:16:23Z","element_count":83,"note":"5軸GA polish 43->97 by M5 (autonomous)","saved_by":"mcp","sha256":"10659f2a987a37b55eb774fe64be385fa4f1033d1fd894c5a7a8d4f3c26c336c","version":3},{"created_at":"2026-06-13T16:03:00Z","element_count":84,"note":"loop3: 設計時延床 85.0㎡ を投入 (見積過大の根治)","saved_by":"mcp","sha256":"06f6c098f91165953f73dc6a5dcfc95a16753962f60563a5c6c42ea8e0bb1604","version":2},{"created_at":"2026-06-13T16:02:59Z","element_count":84,"note":"言葉から生成: LDK+主寝室+子供室+浴室+収納","saved_by":"mcp:create","sha256":"","version":1}]}