{"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-l7vjz5nh","versions":[{"created_at":"2026-07-06T07:11:10Z","element_count":138,"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 / 吹抜×ロフト / 南面大開口×高性能サッシ / 吹き上げ×被せ被せ / 室内完結×被せ被せ","saved_by":"mcp:create","sha256":"","version":1}]}