{"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-3ywcm80v","versions":[{"created_at":"2026-07-06T12:58:22Z","element_count":103,"note":"言葉から生成: 平屋(矩形) / ロフト付きワンルーム・吹抜・大開口 / 吹抜け / ロフト / 大開口 / 雪下ろし易い勾配屋根","saved_by":"mcp:create","sha256":"","version":1}]}