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CJHarmath

CJHarmath

31 Skills published on GitHub.

expo-api-audit

Comprehensive audit of Expo/React Native app API integration layer. Use when asked to: (1) Review API interactions, auth handling, or token management, (2) Find hardcoded data or screens bypassing API, (3) Verify user interactions properly sync to backend, (4) Analyze offline behavior and caching, (5) Audit Orval/OpenAPI code generation, (6) Check for API security issues. Supports TanStack Query, Zustand, axios, Expo Router, expo-secure-store, and expo-constants patterns.

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expo-build-deploy

Building and deploying Expo React Native apps to iOS. Use when configuring EAS Build, submitting to TestFlight, App Store deployment, managing certificates, or troubleshooting build issues.

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postgres-patterns

PostgreSQL patterns for reviewing migrations and writing efficient queries. Use when reviewing Alembic migrations, optimizing queries, or debugging database issues.

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postgres-performance

High-performance PostgreSQL patterns. Use when optimizing queries, designing for scale, or debugging performance issues.

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py-alembic-patterns

Alembic migration patterns for PostgreSQL. Use when creating migrations, reviewing autogenerated migrations, or handling schema changes safely.

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py-async-patterns

Async/await patterns for FastAPI and SQLAlchemy. Use when working with async code, database sessions, concurrent operations, or debugging async issues in Python.

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py-fastapi-patterns

FastAPI patterns for API design. Use when creating endpoints, handling dependencies, error handling, or working with OpenAPI schemas.

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py-observability

Observability patterns for Python backends. Use when adding logging, metrics, tracing, or debugging production issues.

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py-pydantic-patterns

Pydantic v2 patterns for validation and serialization. Use when creating schemas, validating data, or working with request/response models.

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py-sqlmodel-patterns

SQLModel and async SQLAlchemy patterns. Use when working with database models, queries, relationships, or debugging ORM issues.

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py-testing-async

Async testing patterns with pytest-asyncio. Use when writing tests, mocking async code, testing database operations, or debugging test failures.

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react-async-patterns

Async/await correctness in React with Zustand. Use when debugging race conditions, missing awaits, floating promises, or async timing issues. Works for both React web and React Native.

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react-observability

Logging, error messages, and debugging patterns for React. Use when adding logging, designing error messages, debugging production issues, or improving code observability. Works for both React web and React Native.

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react-performance

Performance optimization for React web applications. Use when optimizing renders, implementing virtualization, memoizing components, or debugging performance issues.

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react-state-flows

Complex multi-step operations in React. Use when implementing flows with multiple async steps, state machine patterns, or debugging flow ordering issues. Works for both React web and React Native.

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react-testing

Testing patterns for React with Jest and React Testing Library. Use when writing tests, mocking modules, testing Zustand stores, or debugging test failures in React web applications.

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react-zustand-patterns

Zustand state management patterns for React. Use when working with Zustand stores, debugging state timing issues, or implementing async actions. Works for both React web and React Native.

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rn-async-patterns

Async/await correctness in React Native with Zustand. Use when debugging race conditions, missing awaits, floating promises, or async timing issues in Expo/React Native apps.

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rn-auth

React Native authentication patterns for Expo apps. Use when implementing login flows, Google/Apple sign-in, token management, session handling, or debugging auth issues in Expo/React Native.

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rn-native-features

Native iOS features in Expo React Native apps. Use when implementing camera, push notifications, haptics, permissions, device sensors, or other native APIs in Expo.

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rn-navigation

Expo Router navigation patterns for React Native. Use when implementing navigation, routing, deep links, tab bars, modals, or handling navigation state in Expo apps.

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rn-observability

Logging, error messages, and debugging patterns for React Native. Use when adding logging, designing error messages, debugging production issues, or improving code observability.

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rn-performance

Performance optimization for React Native. Use when optimizing lists, preventing re-renders, memoizing components, or debugging performance issues in Expo/React Native apps.

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rn-state-flows

Complex multi-step operations in React Native. Use when implementing flows with multiple async steps, state machine patterns, or debugging flow ordering issues.

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rn-styling

Styling patterns for React Native with NativeWind and BrandColors. Use when working with styles, themes, colors, responsive layouts, or platform-specific UI in Expo/React Native.

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rn-testing

Testing patterns for React Native with Jest and React Native Testing Library. Use when writing tests, mocking Expo modules, testing Zustand stores, or debugging test failures.

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rn-zustand-patterns

Zustand state management patterns for React Native. Use when working with Zustand stores, debugging state timing issues, or implementing async actions in Zustand.

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web-auth

Authentication patterns for React web applications. Use when implementing login flows, OAuth, JWT handling, session management, or protected routes in React web apps.

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web-build-deploy

Building and deploying React web applications. Use when configuring builds, deploying to Vercel/Netlify, setting up CI/CD, Docker, or managing environments.

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web-navigation

Navigation and routing patterns for React web applications. Use when implementing React Router, Next.js routing, deep links, or handling navigation state.

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web-styling

Styling patterns for React web applications. Use when working with Tailwind CSS, CSS Modules, theming, responsive design, or component styling.

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