Frontend

Create or refactor a .NET 8 WPF shell for a desktop widget host using CommunityToolkit.Mvvm and a custom viewmodel-first navigation service. Use when working on App.xaml, MainWindow/ShellWindow, shared ResourceDictionaries, runtime Light/Dark theming, or shell layout for widget-style apps. Avoid Prism, Frame navigation, and heavy region managers.

Generate ES5-compliant JavaScript for Google Tag Manager Custom HTML tags. Use when writing GTM tags, dataLayer code, or analytics implementations.

React + TypeScript development best practices

Iterative coding development with Test-Driven Development (TDD). Follows a structured workflow of planning reviewable changes, implementing with tests, getting code review, and committing incrementally. Use when implementing features or changes that require iterative development with verification at each step.

Write and run tests with Vitest for Vite-based projects. Use when testing Astro components, JavaScript modules, or any Vite project requiring fast, modern testing.

Multi-agent architectures with LangGraph. Use when building systems with multiple collaborating agents, implementing supervisor or swarm patterns, creating hierarchical agent workflows, or designing agent handoff mechanisms. Covers langgraph-supervisor, langgraph-swarm, agent-as-tool patterns, and context engineering for multi-agent systems.

Use this when user provides a Yii2 codebase for analysis or migration planning. Provides 6-phase workflow: scan, capability extraction, dependency analysis, requirements extraction, semantic indexing, and migration roadmap. Apply when user mentions Yii2, PHP legacy modernization, or framework migration to NestJS

Interactive hook creator for Claude Code. Triggers when user mentions creating hooks, PreToolUse, PostToolUse, hook validation, hook configuration, settings.json hooks, or wants to automate tool execution workflows.

Run PHPUnit tests and fix failures using intelligent agent delegation. Use when user requests to:- Run tests (full suite, specific path, or single file)- Fix failing tests- Analyze test failures- Check test coverageDelegates to runner agent (haiku) for execution and fixer agent (sonnet) for fixes.Automatically cycles between run and fix until tests pass or human intervention needed.

프론트엔드 프로젝트 구조를 분석하고 정리하여 AI 에이전트가 활용할 수 있는 컨텍스트 문서를 생성하는 스킬. "프로젝트 구조 잡아줘", "폴더 구조 정리해줘", "아키텍처 문서화해줘", "프로젝트 초기 설정해줘" 등의 요청에 트리거된다. Next.js, Supabase, React 등 다양한 프론트엔드 스택에서 범용적으로 사용 가능하다.

Use the `date` command via Bash tool whenever you or the user mention time, dates, or temporal concepts. Verify current date/time before ANY temporal response, as environment context may be outdated. Parse expressions like "tomorrow", "next week", "3 days", "in 2 weeks", "next Monday at 3pm". Proactively invoke for deadlines, schedules, time-sensitive tasks, week numbers, or any date/time reference.

Implement or extend user-facing workflows in SvelteKit applications with full-stack capabilities. Specialized in SvelteKit's load functions, form actions, and progressive enhancement. Use when the feature is primarily a UI/UX change backed by existing APIs, affects only the web frontend, and requires following SvelteKit conventions.

Patch a Node.js project's package.json for standard build automation. Use when asked to add/standardize package.json scripts like prebuild/postbuild for TypeScript builds (rimraf dist + tsc-alias), adjust prebuild for Next.js (rimraf dist .next), or ensure an existing package.json pkg config includes required scripts/assets/targets/outputPath.

Idiomatic Go patterns and conventions from official Effective Go guide. Use when writing Go code to ensure proper naming, error handling, concurrency patterns, interface design, and Go-specific idioms. Triggers on Go file creation/editing, code review, or when user asks for idiomatic Go. If you cannot find any info visit to https://go.dev/doc/effective_go

Guide for developing EDS blocks using vanilla JavaScript, Content Driven Development, and block decoration patterns. Covers block structure, decorate function, content extraction, DOM manipulation, and EDS best practices for Adobe Edge Delivery Services.

Applies Open Session's official brand colors and typography to any sort of artifact that may benefit from having our brand's look-and-feel. Use it when brand colors or style guidelines, visual formatting, or company design standards apply.

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.

Google Apps Script documentation, guides, and API reference for automating Google Workspace applications

Use when creating UI designs to avoid generic "AI slop" aesthetics. Enforces distinctive typography, cohesive color systems, purposeful motion, and atmospheric backgrounds. Critical for landing pages, dashboards, and branded interfaces.

Guide for building full-stack web applications using Reflex, a Python framework that compiles to React frontend and FastAPI backend. Use when creating, modifying, or debugging Reflex apps - covers state management, event handlers, components, routing, styling, and data integration patterns.