{"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-isqcl3gx","versions":[{"created_at":"2026-07-05T09:13:25Z","element_count":148,"note":"言葉から生成: 中庭ロの字 / ロフト付きワンルーム・吹抜・大開口 / 中庭 / ロフト / 吹抜 / 大開口 / 断熱強化","saved_by":"mcp:create","sha256":"","version":1}]}