{"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-5s3no9yk","versions":[{"created_at":"2026-06-17T03:11:24Z","element_count":208,"note":"言葉から生成: 総2階(箱) / 狭小の町家・吹抜・坪庭 / 吹抜(LDK) / 坪庭(南面) / 吹き抜け(中庭) / 雪対策(庇+傾斜) / 高断熱(UA0.4以下)","saved_by":"mcp:create","sha256":"","version":1}]}