{"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-cf8p0yt0","versions":[{"created_at":"2026-06-11T12:47:07Z","element_count":83,"note":"言葉から生成: 平屋(矩形) / 平屋の別荘・大きな軒・土間 / 吹抜きロの字中庭 / 軒先4.0mの庇 / 南面大開口サッシュ / 土間リビング& Terrace / 高断熱・高気密仕様","saved_by":"mcp:create","sha256":"","version":1}]}