{"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-iquaoqen","versions":[{"created_at":"2026-07-13T09:59:42Z","element_count":147,"note":"言葉から生成: 平屋(矩形) / ロフト付きワンルーム・吹抜・大開口 / 北面吹抜 / 南面大開口 / ロフト / 蓄熱床 / II類建築 / 北側斜線対応","saved_by":"mcp:create","sha256":"","version":1}]}