CUB-122: Scaffold Control Center React frontend

frontend/src/main.tsx

@@ -0,0 +1,29 @@
+import { StrictMode } from 'react'
+import { createRoot } from 'react-dom/client'
+import { QueryClient, QueryClientProvider } from '@tanstack/react-query'
+import { BrowserRouter } from 'react-router-dom'
+import ErrorBoundary from './components/ErrorBoundary'
+import './index.css'
+import App from './App'
+
+const queryClient = new QueryClient({
+  defaultOptions: {
+    queries: {
+      staleTime: 30_000,
+      refetchOnWindowFocus: false,
+      retry: 1,
+    },
+  },
+})
+
+createRoot(document.getElementById('root')!).render(
+  <StrictMode>
+    <ErrorBoundary>
+      <QueryClientProvider client={queryClient}>
+        <BrowserRouter>
+          <App />
+        </BrowserRouter>
+      </QueryClientProvider>
+    </ErrorBoundary>
+  </StrictMode>,
+)