{"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-wirw9vkt","versions":[{"created_at":"2026-08-04T19:54:32Z","element_count":207,"note":"言葉から生成: 総2階(箱) / 犬と暮らす土間広めの家・ドッグラン / 1F土間広め+犬舎 / 2F収納+ドッグラン / 吹きガラス+除雪易化 / 高断熱 Wrapper","saved_by":"mcp:create","sha256":"","version":1}]}