{"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-3bfg9kdt","versions":[{"created_at":"2026-07-01T23:44:17Z","element_count":120,"note":"言葉から生成: 平屋(矩形) / 平屋の別荘・大きな軒・土間 / 深さ1.5mの庇 / 土間リビング / 中庭テラス / 高断熱仕様","saved_by":"mcp:create","sha256":"","version":1}]}