> browse/registry

> expo-router

Build native mobile apps with file-based routing using Expo Router — React Native navigation that works like Next.js. Use when someone asks to "add navigation to React Native", "Expo Router", "file-based routing for mobile", "deep linking in React Native", "mobile app navigation", or "React Native routing like Next.js". Covers file-based routes, layouts, deep linking, tabs, stacks, and universal links.

> flutter-testing

Write unit, widget, and integration tests with robots, widget keys, and Patrol in Flutter. Use when writing Flutter unit tests, widget tests, or integration tests with Patrol. (triggers: **/test/**.dart, **/integration_test/**.dart, **/robots/**.dart, lib/core/keys/**.dart, test, patrol, robot, WidgetKeys, patrolTest, blocTest, mocktail)

> flutter-widgets

Build maintainable Flutter UI components with composition and theming. Use when building, refactoring, or reviewing Flutter widget implementations for maintainability. (triggers: **_page.dart, **_screen.dart, **/widgets/**, StatelessWidget, const, Theme, ListView)

> react-native-deployment

OTA updates with CodePush, EAS Build, and release configurations. Use when configuring OTA updates, EAS Build, or managing release configs for React Native. (triggers: app.json, eas.json, android/app/build.gradle, ios/**, deployment, codepush, eas, release, build, fastlane)

> flutter-security

Enforce OWASP Mobile security standards for Flutter apps. Use when storing data, making network calls, handling tokens/PII, or preparing a release build. (triggers: lib/infrastructure/**, pubspec.yaml, secure_storage, obfuscate, jailbreak, pinning, PII, OWASP)

> expo-deployment

Deploying Expo apps to iOS App Store, Android Play Store, web hosting, and API routes

> react-native-security

Secure storage, network traffic, and deep links in React Native mobile apps. Use when implementing secure storage, certificate pinning, or deep link validation in React Native. (triggers: **/*.tsx, **/*.ts, security, keychain, secure-storage, deep-link, certificate-pinning)

> react-native-styling

Style React Native apps with StyleSheet API, Flexbox, theming, and responsive design. Use when implementing React Native styles, theming, Flexbox layouts, or responsive design. (triggers: **/*.tsx, **/*.ts, StyleSheet, style, theme, responsive, flexbox)

> react-native-dls

Enforce design token usage in React Native. Use when enforcing a design system, preventing hardcoded styles, or implementing theme tokens in React Native. (triggers: **/*Screen.tsx, **/*Component.tsx, **/theme/**, **/styles/**, StyleSheet, styled-components, theme, colors, spacing)

> react-native-architecture

Structure React Native projects with feature-first organization and separation of concerns. Use when structuring a React Native project or applying clean architecture patterns. (triggers: src/**/*.tsx, src/**/*.ts, app.json, feature, module, directory structure, separation of concerns, Expo, React Navigation, StyleSheet.create, react-native, mobile architecture)

> react-native-navigation-v6

Configure React Navigation 6+ stacks, tabs, and deep linking for React Native. Use when implementing React Navigation stacks, tabs, or deep linking in React Native. (triggers: **/*Navigation*.tsx, src/navigation/**, navigation, react-navigation, stack, tab, drawer, deep link)

> react-native-platform-specific

Handle iOS and Android differences using Platform API and native modules in React Native. Use when handling platform-specific behavior or integrating native modules in React Native. (triggers: **/*.tsx, **/*.ts, **/*.ios.*, **/*.android.*, Platform, Platform.select, native-module, ios, android)

> react-native-testing

Test React Native components with Jest and React Native Testing Library. Use when writing Jest or React Native Testing Library tests for React Native components. (triggers: **/*.test.tsx, **/*.spec.tsx, __tests__/**, test, testing, jest, render, fireEvent, waitFor)

> building-native-ui

Complete guide for building beautiful apps with Expo Router. Covers fundamentals, styling, components, navigation, animations, patterns, and native tabs.

> react-native-notifications

Push notifications for React Native using Firebase or Expo Notifications. Use when integrating push notifications with Firebase or Expo in React Native. (triggers: **/*notification*.ts, **/*notification*.tsx, **/App.tsx, Notifications, messaging, FCM, expo-notifications, react-native-firebase)

> flutter-localization

Add multi-language support using easy_localization with CSV or JSON. Use when implementing localization or multi-language support in Flutter apps. (triggers: **/assets/translations/*.json, **/assets/langs/*.csv, main.dart, localization, multi-language, translation, tr(), easy_localization, sheet_loader)

> react-native-components

Build modern React Native components using function components and composition. Use when building or refactoring React Native function components and composable UI. (triggers: **/*.tsx, **/*.jsx, component, props, children, composition, presentational, container)

> flutter-riverpod-state-management

Implement reactive state management using Riverpod 2.0 with code generation in Flutter. Use when defining @riverpod providers, building AsyncNotifiers, overriding providers in tests, or enforcing immutable state with Freezed models. (triggers: **_provider.dart, **_notifier.dart, riverpod, ProviderScope, ConsumerWidget, Notifier, AsyncValue, ref.watch, @riverpod)

> mobile-developer

Develop React Native, Flutter, or native mobile apps with modern architecture patterns. Masters cross-platform development, native integrations, offline sync, and app store optimization. Use PROACTIVELY for mobile features, cross-platform code, or app optimization.

> expo-dev-client

Build and distribute Expo development clients locally or via TestFlight