{"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-vcjmdk5i","versions":[{"created_at":"2026-08-02T09:43:39Z","element_count":149,"note":"言葉から生成: L字 / ロフト付きワンルーム・吹抜・大開口 / 吹抜 accompanying ロフト (L字の交差部) / 南面大開口 (窓庇+高断熱窓) / L字の奥に中庭 (採光・換気確保) / 雪庇対策 (窓庇+足場ホール) / 高断熱高気密 (地域区分3適合)","saved_by":"mcp:create","sha256":"","version":1}]}