{"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-3mi7u4um","versions":[{"created_at":"2026-07-02T07:30:39Z","element_count":84,"note":"5軸GA polish 45->96 by M5 (autonomous)","saved_by":"mcp","sha256":"4f2617a2bc14fcec9ffd24c49464c85c8541d869209c7e4bf11038d0be3465a3","version":3},{"created_at":"2026-07-02T07:26:29Z","element_count":87,"note":"loop3: 設計時延床 85.0㎡ を投入 (見積過大の根治)","saved_by":"mcp","sha256":"0efd9d6b17867bfc913859f00821e9b6ee24ffa9551521b82214264e30d2ae6f","version":2},{"created_at":"2026-07-02T07:26:29Z","element_count":87,"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}]}