Frontend

Comprehensive guidance for building and deploying static websites with the Astro framework.This skill should be used when asked to "create astro site", "deploy astro to firebase","set up content collections", "add mermaid diagrams to astro", "configure astro i18n","build static blog", or "astro markdown setup". Covers SSG fundamentals, Content Collections,Markdown/MDX, partial hydration, islands architecture, and deployment to Netlify, Vercel,GitHub Pages, or GCP/Firebase.

Create Apple-inspired modern, minimalist UI designs with glassmorphism, smooth animations, generous whitespace, and elegant typography. Use when designing portfolio websites, landing pages, hero sections, product showcases, or implementing Apple-style components, dark mode, or responsive layouts.

Comprehensive change tracking and audit logging system that monitors file modifications, code changes, and project evolution. Use when tracking project history, maintaining audit trails, analyzing development patterns, or when detailed change documentation is required for compliance and team collaboration.

Apply branding guidelines to page sections after style cleanup. Implements 60-30-10 color rule, alternates section backgrounds, and ensures visual hierarchy. Use for each page after running remove-inline-styles.

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

Recognize when user requests new feature implementation and prompt for TDD workflow. Triggers on phrases like "implement", "create function", "add feature", "build a", "write code for". Suggests generating failing tests first.

Auto-invoke when reviewing React, Vue, or frontend component code. Enforces component architecture, state management patterns, and UI best practices.

Persistence and human-in-the-loop patterns for LangGraph. Use when implementing checkpointing, saving/restoring graph state, adding human approval workflows, managing conversation memory across sessions, enabling time-travel debugging, or building fault-tolerant agents that resume from failures.

Guide for creating Claude Code skills that mirror library documentation. Covers sync strategies, SKILL.md structure, and best practices.

Lombok annotations and best practices for Java 21+ projects. Use when reducing boilerplate, configuring builders, or choosing between Lombok and Records.

Diagnose and fix third-party library loading failures in Vite, Webpack, or other bundlers. Use when encountering "Failed to fetch dynamically imported module", worker loading failures, CDN 404 errors, "Invalid type" errors when importing library assets, or assets loading in wrong format. Covers version mismatches, worker loading patterns, and bundler-specific solutions.

UI design system toolkit for Senior UI Designer including design token generation, component documentation, responsive design calculations, and developer handoff tools. Use for creating design systems, maintaining visual consistency, and facilitating design-dev collaboration.

Guide for creating and configuring custom OpenCode commands. Use this skill when you need to extend OpenCode capabilities, add custom workflows, or understand how to define commands with templates, arguments, and context injection.

Use when writing JavaScript for Discourse core, themes, or plugins - covers jQuery phaseout, Ember patterns, singleton imports, lifecycle hooks, and cleanup requirements

Frontend development guidelines for React/TypeScript applications. Modern patterns including Suspense, lazy loading, useSuspenseQuery, file organization with features directory, MUI v7 styling, TanStack Router, performance optimization, and TypeScript best practices. Use when creating components, pages, features, fetching data, styling, routing, or working with frontend code.

Professional report generation system for MyDetailArea dealership management. Creates business intelligence reports with data visualization, multi-format export (HTML/PDF/Excel/CSV), and Notion-style design. Use when generating operational reports, financial analytics, performance dashboards, or custom data exports for the dealership system.

30 pragmatic rules for production HTML covering semantic markup, accessibility (WCAG 2.1 AA), performance optimization, forms, and security. Use when writing HTML, building page structures, creating forms, implementing accessibility, or optimizing for SEO and Core Web Vitals.

Playwright를 사용하여 로컬 웹 애플리케이션과 상호작용하고 테스트하기 위한 툴킷입니다. 프런트엔드 기능 검증, UI 동작 디버깅, 브라우저 스크린샷 캡처 및 브라우저 로그 확인을 지원합니다.

Expert TypeScript/Node.js developer for building high-quality, performant, and maintainable CLI tools and libraries. Enforces best practices, strict typing, and modern patterns.

Expert guide for deploying Next.js apps to Vercel, managing environments, CI/CD pipelines, and production best practices. Use when deploying, setting up automation, or managing production.