Best practices and example-driven guidance for building SwiftUI views and components. Use when creating or refactoring SwiftUI UI, designing tab architecture with TabView, composing screens, or needing component-specific patterns and examples.
Common patterns for Expo SDK 54 and React Native development
Refactor and review SwiftUI view files for consistent structure, dependency injection, and Observation usage. Use when asked to clean up a SwiftUI view's layout/ordering, handle view models safely (non-optional when possible), or standardize how dependencies and @Observable state are initialized and passed.
Master testing - Jest, Testing Library, Detox E2E, and CI/CD integration
Kotlin 2.0 Multiplatform Enterprise Development with KMP, Coroutines, Compose Multiplatform, and Context7 MCP integration. Advanced patterns for mobile, backend, and cross-platform development.
Migrates RxSwift networking code to native Swift async/await. Use when refactoring Observable-based API code, removing RxSwift dependencies, or modernizing to Swift Concurrency.
Use when working with SwiftData - @Model definitions, @Query in SwiftUI, @Relationship macros, ModelContext patterns, CloudKit integration, iOS 26+ features, and Swift 6 concurrency with @MainActor — Apple's native persistence framework
Enterprise mobile development with React Native 0.76+, Flutter 3.24+, Capacitor 6.x, cross-platform patterns, testing, CI/CD
Implement, review, or improve SwiftUI features using the iOS 26+ Liquid Glass API. Use when asked to adopt Liquid Glass in new SwiftUI UI, refactor an existing feature to Liquid Glass, or review Liquid Glass usage for correctness, performance, and design alignment.
Firebase Cloud Messaging and Apple Push Notification Service setup.
Parse and validate XIB/Storyboard files for broken outlets, warnings, accessibility
Build, review, debug, and modernize SwiftUI apps for macOS with modern patterns. Use when building SwiftUI UIs, reviewing code quality, debugging view issues, checking anti-patterns, migrating from AppKit, or designing app architecture.
Persist data with Core Data - models, contexts, fetch requests, migrations, SwiftData
Mobile-first design thinking and decision-making for iOS and Android apps. Touch interaction, performance patterns, platform conventions. Teaches principles, not fixed values. Use when building React Native, Flutter, or native mobile apps.
Expert guidance on Swift 6.2 Approachable Concurrency for iOS 26+. Use when working with async/await, Tasks, actors, MainActor, Sendable, isolation domains, migrating to Swift 6, fixing concurrency compiler errors, or understanding @concurrent. Provides mental models, migration strategies, and safe concurrent Swift patterns.
Master animations - Reanimated 3, Gesture Handler, layout animations, and performance optimization
Invoke COORD_FRONTEND for UI/UX development and frontend implementation
Guide for developing and maintaining the Paperand React Native manga reader application
Guide for implementing Material Design 3 (Material You) principles for Android, web, and cross-platform applications with dynamic theming
Review iOS app code changes for FlyFun EuroAIP architecture compliance. Use when reviewing Swift code in app/FlyFunEuroAIP/, checking architecture patterns, or validating adherence to designs/IOS_APP_DESIGN.md. Verifies RZFlight model reuse, composed AppState pattern, repository abstraction, and platform-specific UI patterns.
Validates Tizen app compliance with TCT (Tizen Compliance Tests). Checks conformance to IoT, TV, or mobile profiles.
Use when starting Metro bundler for Expo development, debugging Metro errors, or enabling expo-mcp local capabilities - manages Metro lifecycle with EXPO_UNSTABLE_MCP_SERVER=1 flag for autonomous testing
