Update main.tsx

frontend/src/main.tsx

@@ -3,12 +3,27 @@ import { createRoot } from 'react-dom/client'
 import { AuthProvider } from './context/AuthContext'
 import './index.css'
 import App from './App.tsx'
+import { QueryClient, QueryClientProvider } from '@tanstack/react-query'
+
+const queryClient = new QueryClient({
+  defaultOptions: {
+    queries: {
+      refetchOnWindowFocus: false,
+      retry: 1,
+      staleTime: 5 * 60 * 1000,      // 5 minutes - data stays fresh longer
+      gcTime: 10 * 60 * 1000,        // 10 minutes - keep in memory longer
+    },
+  },
+})
+
 
 createRoot(document.getElementById('root')!).render(
   <StrictMode>
+    <QueryClientProvider client={queryClient}>
       <AuthProvider>
         <App />
       </AuthProvider>
+    </QueryClientProvider>
   </StrictMode>,
 )