Frontend

Guide for reviewing modern CSS framework. Use this when asked to review CSS in `packages/css`.

Vercel serverless deployment platform optimized for Next.js with edge functions, automatic previews, and global CDN

Expert guidance for building TUI (Text User Interface) applications with the Textual framework. Invoke when user asks about Textual development, TUI apps, widgets, screens, CSS styling, reactive programming, or testing Textual applications.

Interpretive guidance for Prettier code formatting across multiple file types (JS/TS, YAML, JSON, CSS, HTML). Use when configuring Prettier, troubleshooting formatting issues, or understanding tool selection for these file types.

Guide developers through API versioning strategies, deprecation workflows, and backward compatibility patterns

Runs a complete phase workflow: audit existing work, fill gaps, run tests, verify acceptance criteria, and report readiness for next phase. Use when user asks to run or complete a project phase.

Comprehensive Contentful SDK guide for TypeScript/JavaScript. Covers Management SDK (CMA) for content/schema management, Delivery SDK (CDA) for fetching content, and App Framework SDK for building Contentful apps. Use for any Contentful API integration work.

Use when you want to rebuild or refresh the semantic search index for the codebase

Reference and maintain documentation of the project's technical stack including frameworks, languages, databases, testing tools, and third-party services. Use this skill when choosing technologies for implementation, adding new dependencies or libraries, setting up project infrastructure, configuring build tools and package managers, integrating third-party services (authentication, email, monitoring), selecting appropriate frameworks for features, ensuring consistency with existing technology choices, documenting technology decisions, reviewing technology compatibility, or onboarding team members to the tech stack. Apply this skill when making technology decisions, adding new tools or services, documenting the stack, or ensuring new code aligns with the project's established technical architecture.

Expert knowledge of frontend JavaScript for API integration including fetch/axios patterns, async/await error handling, form validation and submission, pagination implementation, loading states, DOM manipulation, event listeners, query parameter building, and vanilla JS best practices. Use when working with public/script.js, adding UI features, debugging client-side API issues, implementing forms, or managing client-side state.

Create distinctive, production-grade frontend interfaces with high design quality. Use this skill when the user asks to build web components, pages, or applications. Generates creative, polished code that avoids generic AI aesthetics. | Sử dụng khi: thiết kế frontend, wireframe, mockup, prototype.

Next.js 14+ App Router patterns, server components, and data fetching

Expert React - Hooks, composants, state management, data fetching, testing, styling et patterns modernes

Executes OpenAI Codex CLI for code analysis, refactoring, and automated editing. Activates when users mention codex commands, code review requests, or automated code transformations requiring advanced reasoning models.

Generate PPTX-compatible HTML slide decks for math worked examples. Use when user says "create worked example" or needs visual step-by-step math instruction with CFU questions and practice problems.

Angular 21+ testing infrastructure with fixtures, ng-mocks, component harness, AAA pattern, and Jest best practices for eliminating duplication

Production-ready React Native screen creator that implements screens following established project patterns, enforcing best practices (NO mock data, real Supabase queries, BaseScreen wrapper, safe navigation, analytics tracking). Use when user says "create screen", "implement screen", "build [ScreenName]", or after analyzing existing screen. ALWAYS reads PROJECT_MEMORY.md, applies ACCEPTANCE_CHECKLIST.md, and avoids known errors.

Implementation and troubleshooting agent - builds features and fixes bugs

Maintain Cupertino + Lumina visual consistency for the AERA frontend. Use when creating or modifying UI, CSS/tokens, layouts, components, menus/overlays, tables, charts, or interaction states in this repo.

Guide developers through API versioning strategies, deprecation workflows, and backward compatibility patterns