userfront로 리펙토링 완료

adminfront/src/app/queryClient.ts

@@ -0,0 +1,11 @@
+import { QueryClient } from "@tanstack/react-query";
+
+export const queryClient = new QueryClient({
+  defaultOptions: {
+    queries: {
+      staleTime: 30_000,
+      refetchOnWindowFocus: false,
+      retry: 1,
+    },
+  },
+});