{"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-e6u8d4pa","versions":[{"created_at":"2026-06-18T13:13:22Z","element_count":216,"note":"言葉から生成: L字 / 二世帯住宅・玄関2つ・水回り分離 / 吹抜け / ピット式浴室 / 独立玄関 / 2面採光","saved_by":"mcp:create","sha256":"","version":1}]}