{"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-a01x93g4","versions":[{"created_at":"2026-07-17T15:22:24Z","element_count":104,"note":"言葉から生成: 平屋(矩形) / 平屋の別荘・大きな軒・土間 / 寄棟屋根/軒出1.5m / 東寄りに設けた1/10採光庭 / 南面連続サッシ / 土間廊下/工作组 / 高気密高断熱(Ua=0.41)","saved_by":"mcp:create","sha256":"","version":1}]}