feat: bootstrap lunch picker miniapp with backend, docs, and branding assets

starter-pages-_404.tsx

@@ -0,0 +1,39 @@
+import { StyleSheet, Text, View } from 'react-native';
+import { SafeAreaView } from '@granite-js/native/react-native-safe-area-context';
+
+export default function NotFoundPage() {
+  return (
+    <SafeAreaView style={styles.safeArea}>
+      <View style={styles.container}>
+        <Text style={styles.title}>Page not found</Text>
+        <Text style={styles.description}>
+          요청한 화면을 찾을 수 없습니다.
+        </Text>
+      </View>
+    </SafeAreaView>
+  );
+}
+
+const styles = StyleSheet.create({
+  safeArea: {
+    flex: 1,
+    backgroundColor: '#F4F7FB',
+  },
+  container: {
+    flex: 1,
+    alignItems: 'center',
+    justifyContent: 'center',
+    paddingHorizontal: 24,
+  },
+  title: {
+    color: '#111827',
+    fontSize: 24,
+    fontWeight: '700',
+    marginBottom: 8,
+  },
+  description: {
+    color: '#4B5563',
+    fontSize: 15,
+    textAlign: 'center',
+  },
+});