feat(driver-pwa): design tokens, entry, test setup

Co-Authored-By: claude-flow <ruv@ruv.net>

driver-pwa/frontend/src/main.tsx

@@ -0,0 +1,22 @@
+import React from "react";
+import ReactDOM from "react-dom/client";
+import { BrowserRouter } from "react-router-dom";
+import { QueryClient, QueryClientProvider } from "@tanstack/react-query";
+import { Toaster } from "sonner";
+import App from "./App";
+import "./index.css";
+
+const queryClient = new QueryClient({
+  defaultOptions: { queries: { retry: 1, staleTime: 15_000 } },
+});
+
+ReactDOM.createRoot(document.getElementById("root")!).render(
+  <React.StrictMode>
+    <QueryClientProvider client={queryClient}>
+      <BrowserRouter>
+        <App />
+        <Toaster richColors position="top-center" />
+      </BrowserRouter>
+    </QueryClientProvider>
+  </React.StrictMode>
+);