{"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-gzeveck7","versions":[{"created_at":"2026-07-06T17:49:42Z","element_count":208,"note":"言葉から生成: 中庭ロの字 / 狭小の町家・吹抜・坪庭 / 中庭吹抜 / 坪庭 / 中二階 / 防音ガラス / 高断熱仕様","saved_by":"mcp:create","sha256":"","version":1}]}