{"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-fx9m9x1i","versions":[{"created_at":"2026-06-19T04:13:28Z","element_count":135,"note":"言葉から生成: 平屋(矩形) / 平屋の別荘・大きな軒・土間 / 吹放し大空間 / 集約型土間 / 深さ1.5m以上の庇 / 東南西三面採光 / 高気密高断熱仕様","saved_by":"mcp:create","sha256":"","version":1}]}