{"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-z6btayws","versions":[{"created_at":"2026-06-22T06:00:30Z","element_count":168,"note":"言葉から生成: 総2階(箱) / 茶室と縁側のある和の住まい / 吹抜 / 土間 / 縁側 / 茶室 / 雪対策 / 高気密 / 高断熱","saved_by":"mcp:create","sha256":"","version":1}]}