{"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-t0ec376k","versions":[{"created_at":"2026-07-19T16:07:33Z","element_count":165,"note":"言葉から生成: 中庭ロの字 / 書斎とライブラリのある静かな家 / Wood / Wood / Wood / Wood / Wood","saved_by":"mcp:create","sha256":"","version":1}]}