Frontend

Apply comprehensive brand style guidelines to all project work including UI components, code, documentation, and user-facing content. Use when creating or editing Angular components, HTML/CSS, TypeScript code, writing copy, documenting features, or any customer-facing materials to ensure brand consistency.

Guides writing Vitest tests for Chrome extension code. Use when creating tests, improving coverage, or testing Vue components, content scripts, or Chrome APIs.

Convert markdown newsletters to styled HTML matching the Catskill Crew brand and preview in browser

Tailwind CSS styling with CVA variants, data-slots, layout patterns, and z-index management

Trace code execution path before implementing fixes. Forces understanding of fn(args, deps) flows, Result types, and workflow composition. Prevents guessing by requiring file:line references and execution diagrams.

Comprehensive guide for creating effective Claude Code skills with security best practices, CLI-specific features, and structural patterns. Use when creating skills, needing security guidance, understanding skill architecture, or learning best practices.

Generate realistic fake content for HTML prototypes. Use when populating pages with sample text, products, testimonials, or other content. NOT generic lorem ipsum.

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.. Enhanced with Context7 MCP for up-to-date documentation.

Expert in React 19 and Next.js 16 development with modern patterns including Server Components, hooks, and performance optimization. Use when creating new UI components, refactoring React code, or implementing interactive features.

Use when writing essays, explanations, or blog posts. Applies a Cartesian writing style - clear, methodical, building logically from foundations.

Write and run JavaScript/TypeScript tests using Vitest or Jest with mocking, component testing, and coverage. Use when writing JS/TS tests, testing Svelte/React components, or setting up test configuration.

Creates and manages C4 architecture diagrams using PlantUML. Use when the user wants to visualize software architecture, create context/container/component/sequence diagrams, document system design with the C4 model, or mentions architecture diagrams, system design, or PlantUML. Supports iterative diagram building through conversational workflow.

Guide experienced developers through TDD failure scenarios and recovery procedures when tests behave unexpectedly

Best practices for component CSS, design system consistency, and layout patterns. Use when authoring component styles.

Best practices for developing zensical/Material for MkDocs static sites. Covers installation, virtual environments, project structure, responsive images, CSS, media embedding, and verification. Use for ANY Material for MkDocs project development beyond basic text editing.

Astro 5.0 + Tailwind CSS landing page with blog, dark mode, and perfect PageSpeed scores.

Run Python code in lesson context with proper uv and venv handling for agent-spike project. Activate when user wants to run tests, demos, or CLI commands for lessons in lessons/ directories. Project-specific for agent-spike multi-agent learning.

Apply Forth AI brand guidelines when creating frontends. Use for UI components, pages, applications, and design systems. Enforces radical simplicity, implicit elegance, abstract graphics, and the Forth AI visual identity.

This skill should be used when creating extensions for Claude Code or OpenCode, including plugins, commands, agents, skills, and custom tools. Covers both platforms with format specifications, best practices, and the ferg-engineering build system.

Generate GenuVerity fact-check reports from structured input (Gemini research output). Use /batch-report to process research into HTML reports. Optimized for token efficiency - expects pre-researched sources.