initialized the repo with basic expo app example

20250227/first/app/+not-found.tsx

@@ -0,0 +1,32 @@
+import { Link, Stack } from 'expo-router';
+import { StyleSheet } from 'react-native';
+
+import { ThemedText } from '@/components/ThemedText';
+import { ThemedView } from '@/components/ThemedView';
+
+export default function NotFoundScreen() {
+  return (
+    <>
+      <Stack.Screen options={{ title: 'Oops!' }} />
+      <ThemedView style={styles.container}>
+        <ThemedText type="title">This screen doesn't exist.</ThemedText>
+        <Link href="/" style={styles.link}>
+          <ThemedText type="link">Go to home screen!</ThemedText>
+        </Link>
+      </ThemedView>
+    </>
+  );
+}
+
+const styles = StyleSheet.create({
+  container: {
+    flex: 1,
+    alignItems: 'center',
+    justifyContent: 'center',
+    padding: 20,
+  },
+  link: {
+    marginTop: 15,
+    paddingVertical: 15,
+  },
+});