{"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-a2ykjjnn","versions":[{"created_at":"2026-07-31T15:51:51Z","element_count":131,"note":"言葉から生成: 総2階(箱) / 越屋根のある自然素材の家・通風重視 / 越屋根(Clerestory) / 高断熱(C-Value-55以上) / 南面大開口 / 吹抜(Courtyard-adjacent) / 天然素材(C-Value-55以上)","saved_by":"mcp:create","sha256":"","version":1}]}