{"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-ang4tirf","versions":[{"created_at":"2026-06-15T02:00:20Z","element_count":216,"note":"言葉から生成: 総2階(箱) / ロフト付きワンルーム・吹抜・大開口 / ロフト空間の導入 / LDK一体の吹抜 / 南面への大開口採光 / 省エネ地域区分6対応の断熱・気密仕様","saved_by":"mcp:create","sha256":"","version":1}]}