Minimal Expo app shell; paste pattern files into app/ or src/.
# Create an Expo app and copy this folder's contents into it
npx create-expo-app@latest rn-sandbox
cd rn-sandbox
# Install commonly used libs; add more per pattern
npx expo install @tanstack/react-query
npx expo install @react-navigation/native @react-navigation/native-stack react-native-screens react-native-safe-area-context
npx expo install @react-native-async-storage/async-storage
npx expo install react-native-mmkv
npx expo install expo-router
# Start
npx expo start