{"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-hawaiikaihouse-uyy7eyxe","versions":[{"created_at":"2026-10-27T07:00:07Z","element_count":26,"note":"","saved_by":"editor","sha256":"14c78354446fc50b3af16015fef2d418185afdbce6cf2f87a47cb6047b66034c","version":2}]}