feat(platform): add vehicle data management console

vehicle-data-platform/apps/web/src/App.tsx

@@ -0,0 +1,28 @@
+import { useState } from 'react';
+import { AppShell, type PageKey } from './layout/AppShell';
+import { Dashboard } from './pages/Dashboard';
+import { History } from './pages/History';
+import { Mileage } from './pages/Mileage';
+import { Quality } from './pages/Quality';
+import { Realtime } from './pages/Realtime';
+import { VehicleDetail } from './pages/VehicleDetail';
+import { Vehicles } from './pages/Vehicles';
+
+const pages: Record<PageKey, JSX.Element> = {
+  dashboard: <Dashboard />,
+  vehicles: <Vehicles />,
+  realtime: <Realtime />,
+  detail: <VehicleDetail />,
+  history: <History />,
+  mileage: <Mileage />,
+  quality: <Quality />
+};
+
+export default function App() {
+  const [activePage, setActivePage] = useState<PageKey>('dashboard');
+  return (
+    <AppShell activePage={activePage} onChange={setActivePage}>
+      {pages[activePage]}
+    </AppShell>
+  );
+}