Initial UI setup with React, Vite, shadcn and Tailwind CSS

ui/src/App.tsx

@@ -0,0 +1,22 @@
+import { Button } from '@/components/ui/button'
+import { Card, CardContent, CardHeader, CardTitle } from '@/components/ui/card'
+
+function App() {
+  return (
+    <div className="p-8">
+      <h1 className="text-3xl font-bold mb-6">Llamactl Dashboard</h1>
+      
+      <Card className="w-96">
+        <CardHeader>
+          <CardTitle>Sample Instance</CardTitle>
+        </CardHeader>
+        <CardContent>
+          <p className="mb-4">Status: Running</p>
+          <Button>Stop Instance</Button>
+        </CardContent>
+      </Card>
+    </div>
+  )
+}
+
+export default App