{"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-5nam4r21","versions":[{"created_at":"2026-07-24T03:08:40Z","element_count":89,"note":"loop3: 設計時延床 85.0㎡ を投入 (見積過大の根治)","saved_by":"mcp","sha256":"25688d9451276020823b1d0ed6779f6c8959aefa445991240edb92ec35834718","version":2},{"created_at":"2026-07-24T03:08:37Z","element_count":89,"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}]}