{"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-00s0j47i","versions":[{"created_at":"2026-07-27T04:46:55Z","element_count":238,"note":"言葉から生成: 中庭ロの字 / 狭小の町家・吹抜・坪庭 / 北西面路上採光窓(3.3㎡以上) / 吹抜(1F-2F) / 中庭(雪融け・採光) / 蓄熱システム / 雪害防止システム","saved_by":"mcp:create","sha256":"","version":1}]}