{"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-kouth93y","versions":[{"created_at":"2026-07-16T06:54:26Z","element_count":183,"note":"言葉から生成: 中庭ロの字 / 狭小の町家・吹抜・坪庭 / 吹抜 / 坪庭 / 高断熱・高気密 / 自然換気","saved_by":"mcp:create","sha256":"","version":1}]}