refactor to turbo

apps/expo/src/app/[...missing].tsx

@@ -0,0 +1,21 @@
+import { View } from "react-native";
+import { Link, Stack } from "expo-router";
+
+import { Text } from "~/components/ui/Text";
+
+export default function NotFoundScreen() {
+  return (
+    <>
+      <Stack.Screen options={{ title: "Oops!" }} />
+      <View className="flex-1 items-center justify-center p-5">
+        <Text className="text-lg font-bold">
+          This screen doesn&apos;t exist.
+        </Text>
+
+        <Link href="/" className="mt-4 py-4">
+          <Text className="text-sm text-sky-500">Go to home screen!</Text>
+        </Link>
+      </View>
+    </>
+  );
+}