Frontend

How tests should be structured, named, and prioritized in this codebase.

Manages local web server lifecycle and enables web page development with Playwright MCP. Use when developing HTML/CSS/JS, building web pages, viewing web pages, testing UI interactions, verifying renders, debugging frontend issues, or iterating on web design. Covers build, startup, shutdown, and browser-based testing workflows.

Create distinctive, production-grade frontend interfaces with high design quality. Use this skill when the user asks to build web components, pages, artifacts, posters, or applications (examples include websites, landing pages, dashboards, React components, HTML/CSS layouts, or when styling/beautifying any web UI). Generates creative, polished code and UI design that avoids generic AI aesthetics.

Build Claude Code extensions - skills, agents, hooks, plugins, marketplaces, slash commands. Use when creating Claude Code components, building new skills, writing agents, creating hooks, making plugins, setting up marketplaces, writing slash commands, fixing extension configurations, or troubleshooting Claude Code extensions. Includes builder agents for autonomous creation. Not for looking up docs - use claude-code-docs-reference for that.

Review Server Actions for security, validation, and best practices in React 19. Use when reviewing forms, mutations, or server-side logic.

This skill should be used when the user asks about "DERIVE workflow", "effective development methodology", "research-backed approach", "structured development", "how to approach this task", or wants guidance on planning and executing software development tasks systematically. Provides the complete DERIVE methodology with research-backed evidence for each phase.

Implement features end-to-end in Laravel 12 + Inertia.js + React 19 + TypeScript. Use when buildingnew features, wiring controllers to pages, or implementing CRUD operations. EXCLUSIVE to fullstack-developer agent.

Build web applications with Svelte 5 runes, SvelteKit routing, form actions, and component patterns. Use when working with Svelte, SvelteKit, or building reactive web interfaces.

Apply RICE, ICE, or MoSCoW scoring to prioritize features. Use when deciding what to build first, during backlog grooming, or when product-manager needs to rank items.

Generate configuration files for tools like ESLint, Prettier, TypeScript, and Webpack. Use when setting up project tooling or standardizing configurations.

Create Architecture Decision Records (ADRs) documenting significant technical decisions for the FF Analytics platform. This skill should be used when making architectural choices, evaluating alternatives for data models or infrastructure, documenting trade-offs, or when the user asks "should we use X or Y approach?" Guides through the ADR creation workflow from context gathering to documentation.

Toolkit for interacting with and testing local web applications using Playwright. Supports verifying frontend functionality, debugging UI behavior, capturing browser screenshots, and viewing browser logs.

Execute complete build pipeline with dead code detection, formatting, linting, type checking, testing, and production build. Use when the user mentions building, running the full pipeline, checking code quality, or preparing for deployment. Auto-triggers on phrases like "build the project", "run all checks", "prepare for production", or "validate code quality".

Build AI applications on Azure using Azure OpenAI, Cognitive Services, and ML services with enterprise patterns

Build Next.js 16 apps with App Router, Server Components/Actions, Cache Components ("use cache"), and async route params. Includes proxy.ts (replaces middleware.ts) and React 19.2.Use when: building Next.js 16 projects, or troubleshooting async params (Promise types), "use cache" directives, parallel route 404s (missing default.js), or proxy.ts CORS.

Toolkit for interacting with and testing local web applications using Playwright. Supports verifying frontend functionality, debugging UI behavior, capturing browser screenshots, and viewing browser logs.

Diagnose and fix CI/CD failures related to Lint errors and test failures. Use when: (1) User mentions CI/CD failures, lint errors, or test failures, (2) User asks to fix code quality issues or make tests pass, (3) User requests to check or verify code before committing/pushing, (4) Working on a task that requires running lint or tests to validate changes. This skill provides systematic workflows for identifying, diagnosing, and fixing common Lint and test errors in TypeScript/React projects using ESLint, Prettier, and Vitest.

TypeScript development best practices, code quality tools, and documentation templates. Activated when working with .ts, .tsx files or TypeScript projects.

CareMatch용 React 컴포넌트 생성. 고령자 친화적 접근성 규칙이 적용된 shadcn/ui 기반 컴포넌트를 생성합니다. 사용법 - "컴포넌트 생성해줘", "JobCard 컴포넌트 만들어줘"

Coordinates 9 specialized audit workers (security, build, architecture, code quality, dependencies, dead code, observability, concurrency, lifecycle). Researches best practices, delegates parallel audits, aggregates results into single Linear task in Epic 0.