{"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-3n9by77h","versions":[{"created_at":"2026-06-12T22:54:34Z","element_count":171,"note":"言葉から生成: 中庭ロの字 / 茶室と縁側のある和の住まい / 吹抜きの茶室 / 広縁(縁側) / 中庭採光 / 高断熱・高気密 / 眺望確保","saved_by":"mcp:create","sha256":"","version":1}]}