{"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-kzvchupi","versions":[{"created_at":"2026-06-30T04:51:31Z","element_count":208,"note":"言葉から生成: 中庭ロの字 / 中庭のある回遊動線・ロの字 / 吹抜け付き中庭 / 防寒・防雪設計 / LCCM準拠の高性能断熱 / 回遊動線","saved_by":"mcp:create","sha256":"","version":1}]}