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React Native & Expo Development Guide
React Native and Expo development guide covering components, styling, animations, navigation,
state management, forms, networking, performance optimization, testing, native capabilities,
and engineering (project structure, deployment, SDK upgrades, CI/CD).
Use when: building React Native or Expo apps, implementing animations or native UI, managing
state, fetching data, writing tests, optimizing performance, deploying to App Store/Play Store,
setting up CI/CD, upgrading Expo SDK, or configuring Tailwind/NativeWind.