{"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-qg27r8ea","versions":[{"created_at":"2026-07-24T12:35:17Z","element_count":208,"note":"言葉から生成: 総2階(箱) / 狭小の町家・吹抜・坪庭 / 南面全面サンルーム / 1F中央に6坪の坪庭 / 2FLDKに3間吹抜 / 壁率65%以下の省エネ外皮 / 除雪容易な平屋形状の屋根","saved_by":"mcp:create","sha256":"","version":1}]}