> 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-performance

Optimization standards for rebuilds and memory. Use when optimizing Flutter widget rebuilds, reducing memory usage, or improving rendering performance. (triggers: lib/presentation/**, pubspec.yaml, const, buildWhen, ListView.builder, Isolate, RepaintBoundary)

> building-native-ui

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

> expo-deployment

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

> flutter-bloc-state-management

Implement BLoC/Cubit state management correctly in Flutter. Use when writing, modifying, reviewing, or testing any BLoC, Cubit, state, or event Dart file — even for small changes. (triggers: **_bloc.dart, **_cubit.dart, **_state.dart, **_event.dart, BlocProvider, BlocBuilder, BlocListener, Cubit, Emitter)

> flutter-error-handling

Handle errors functionally with Either/Failure patterns. Use when writing repositories, handling exceptions, defining failures, or using Either in any Flutter layer. (triggers: lib/domain/**, lib/infrastructure/**, Either, fold, Left, Right, Failure, dartz)

> flutter-go-router-navigation

Typed routes, route state, and redirection using go_router. Use when implementing go_router typed routes, guards, or redirects in Flutter. (triggers: **/router.dart, **/app_router.dart, GoRouter, GoRoute, StatefulShellRoute, redirection, typed-routes)

> expo-api-routes

Guidelines for creating API routes in Expo Router with EAS Hosting

> flutter-retrofit-networking

Build type-safe HTTP networking with Dio and Retrofit including auth interceptors. Use when integrating Dio, Retrofit, or API auth interceptors in Flutter. (triggers: **/data_sources/**, **/api/**, Retrofit, Dio, RestClient, GET, POST, Interceptor, refreshing)

> expo-cicd-workflows

Helps understand and write EAS workflow YAML files for Expo projects. Use this skill when the user asks about CI/CD or workflows in an Expo or EAS context, mentions .eas/workflows/, or wants help with EAS build pipelines or deployment automation.

> expo-dev-client

Build and distribute Expo development clients locally or via TestFlight

> 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-tailwind-setup

Set up Tailwind CSS v4 in Expo with react-native-css and NativeWind v5 for universal styling

> 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)

> flutter-idiomatic-flutter

Compose modern Flutter layouts and widgets idiomatically. Use when composing Flutter widget trees, managing layout constraints, or following idiomatic Flutter patterns. (triggers: lib/presentation/**/*.dart, context.mounted, SizedBox, Gap, composition, shrink)

> 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)

> react-native-performance

Optimize React Native rendering for smooth 60fps mobile experiences. Use when optimizing React Native app performance, reducing re-renders, or fixing frame drops. (triggers: **/*.tsx, **/*.ts, FlatList, memo, useMemo, useCallback, performance, optimization)

> 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)

> 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)

> flutter-navigation

Implement navigation patterns with go_router, deep linking, and named routes. Use when building navigation, deep linking, or named routes in Flutter. (triggers: **/*_route.dart, **/*_router.dart, **/main.dart, Navigator, GoRouter, routes, deep link, go_router, AutoRoute)