{"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-lnsnikgw","versions":[{"created_at":"2026-06-19T15:14:51Z","element_count":256,"note":"言葉から生成: 中庭ロの字 / ピアノ室と防音・吹抜のある家 / 高気密高断熱仕様 / ピアノ室二重壁+吸音天井 / 中央吹抜+中庭採光 / PV+HEMS搭載 / 耐震等級3","saved_by":"mcp:create","sha256":"","version":1}]}