{"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-ebvxn6yc","versions":[{"created_at":"2026-07-03T09:39:29Z","element_count":108,"note":"言葉から生成: 平屋(矩形) / 平屋の別荘・大きな軒・土間 / 吹替え付土間 / 深さ1.5mの庇 / 南面大型窓 / 断熱等級5 / 雪下ろししやすい勾配屋根","saved_by":"mcp:create","sha256":"","version":1}]}