대시보드 뷰어에서 customTitle 표시 수정 - element.title 대신 element.customTitle || element.title 사용

frontend/components/dashboard/DashboardViewer.tsx

@@ -286,7 +286,7 @@ function ViewerElement({ element, data, isLoading, onRefresh }: ViewerElementPro
       {/* 헤더 (showHeader가 true일 때만 표시) */}
       {element.showHeader !== false && (
         <div className="flex items-center justify-between border-b border-gray-200 bg-gray-50 px-4 py-3">
-          <h3 className="text-sm font-semibold text-gray-800">{element.title}</h3>
+          <h3 className="text-sm font-semibold text-gray-800">{element.customTitle || element.title}</h3>
 
           {/* 새로고침 버튼 (호버 시에만 표시) */}
           {isHovered && (