{"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-jof9ig5g","versions":[{"created_at":"2026-08-14T14:33:15Z","element_count":119,"note":"loop3: 設計時延床 80.0㎡ を投入 (見積過大の根治)","saved_by":"mcp","sha256":"1b610d0820026b81c5f3f6c34f3ecb779bdc91457819b80b693b6acdcd7f63bf","version":2},{"created_at":"2026-08-14T14:33:15Z","element_count":119,"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}]}