client/src/main.jsx

import React from 'react'
import ReactDOM from 'react-dom/client'
import { QueryClient, QueryClientProvider } from '@tanstack/react-query'
import './styles.css'
import App from './AppShell'

const queryClient = new QueryClient({
  defaultOptions: {
    queries: {
      refetchOnWindowFocus: false,
      retry: 1,
    },
    mutations: {
      retry: 0,
    },
  },
})

if (typeof window !== 'undefined' && 'serviceWorker' in navigator) {
  window.addEventListener('load', () => {
    navigator.serviceWorker.register('/sw.js').catch(() => {})
  })
}

ReactDOM.createRoot(document.getElementById('root')).render(
  <React.StrictMode>
    <QueryClientProvider client={queryClient}>
      <App />
    </QueryClientProvider>
  </React.StrictMode>
)