Frontend

React/Next.js data patterns - React Query hooks, ORPC client integration, error handling, cache invalidation. Complements frontend-design skill (visuals).

Use the project's specific technology stack including Next.js, React, TypeScript, Hono, PostgreSQL, Chakra UI, and Temporal for workflow automation. When setting up new features, choosing libraries, or making architectural decisions. When working on frontend code using React and Next.js. When implementing backend APIs with Hono. When working with PostgreSQL databases via Drizzle or Prisma. When styling with Chakra UI components. When implementing authentication with better-auth or workflows with Temporal. When adding dependencies or configuring build tools. This skill ensures technology choices align with the project's established stack.

Task decomposition with integrated validation via Codex clink. Guides task-decomposer through BUILD-PLAN creation, mandatory validation gate, and fix loop. Use when creating build plans, decomposing blueprints into tasks, or validating task granularity. Triggers on build plan, task decomposition, B1 phase, decompose blueprint, atomic tasks.

Expert web designer for responsive, mobile-first websites. Specializes in landing pages using Astro, Tailwind CSS, and Cloudflare Pages. Enforces design consistency through style guides, semantic HTML, and accessibility. Prioritizes data-driven content patterns to minimize hardcoding. Trigger when working on website projects, landing pages, web components, or design system implementation.

DevOps automation for a Next.js (Vercel) frontend, Fly.io backend, and Supabase Postgres. The agent should prefer `just` recipes as the invocation surface. Internally, recipes use a hybrid MCP+CLI approach: Supabase CLI for writes/migrations (local & prod), Fly MCP preferred for ops with flyctl fallback, and Vercel CLI for deploy with optional MCP for env/status. Secrets are loaded exclusively via 1Password CLI; values are never printed.

Guia completo de MUI V7 para React + TypeScript. Ensina migração V6→V7, design responsivo avançado, theming profissional, padrões de componentes e detecção automática de sintaxe antiga. Use quando criar dashboards, interfaces modernas, ou trabalhar com Material-UI/MUI.

Flutter UI patterns including layouts, Material 3 components, and responsive design. Use when building screens, creating reusable widgets, or implementing responsive layouts.

Domain-Driven Design patterns and architecture for Deno TypeScript applications. Use when building complex business logic, implementing bounded contexts, or structuring large-scale Deno applications with clear separation of concerns.

Row Level Security policy templates for Supabase - multi-tenant patterns, user isolation, role-based access, and secure-by-default configurations. Use when securing Supabase tables, implementing RLS policies, building multi-tenant AI apps, protecting user data, creating chat/RAG systems, or when user mentions row level security, RLS, Supabase security, tenant isolation, or data access policies.

Implements atomic CSS with UnoCSS using on-demand generation, custom rules, and presets. Use when wanting instant atomic CSS, custom utility frameworks, or Tailwind alternatives with more flexibility.

Client-side state patterns for Web Components. Use when building interactive applications requiring state synchronization, reactive updates, or undo/redo functionality.

Select and apply numerical differentiation schemes for PDE/ODE discretization. Use when choosing finite difference/volume/spectral schemes, building stencils, handling boundaries, or estimating truncation error and dispersion.

Frontend development guidelines for Next.js + React 19 + shadcn/ui applications. Modern patterns including App Router, Server Components, Client Components, Server Actions, shadcn/ui with Tailwind CSS, React Hook Form, lazy loading, Suspense boundaries, Supabase client integration, performance optimization, and TypeScript best practices. Use when creating pages, components, forms, styling, data fetching, new features or working with Next.js/React code.

Fix lint errors and update typescript-coding skill with lessons learned. Use when fixing Biome lint errors, resolving linting issues, or when lint check fails. Automatically extracts patterns from fixes and adds prevention tips to typescript-coding skill.

Run and interpret visual QA pipeline for EPUB XHTML files. Use when user asks about layout, screenshots, visual issues, or rendering problems in REBRANDED_OUTPUT.

Interpretive guidance for designing Claude Code hooks. Helps you understand hook lifecycle, when to use hooks vs other patterns, and common pitfalls. ALWAYS use when creating or reviewing hooks.

Smart repo bootstrapping for Agentic flow (AGENTS.md)

Pre-push validation checklist (cargo fmt, clippy with zero warnings, feature flag testing, test suite), CI monitoring, merge process, and release quality gates. Use when preparing to push code, validating changes before PR, running CI checks, merging PRs, or preparing releases.

Optimizing StickerNest for mobile devices and touch interactions. Use when the user asks about mobile responsiveness, touch gestures, pinch-to-zoom, mobile UI, touch targets, viewport handling, safe areas, mobile accessibility, or making components work on phones and tablets. Covers gestures, responsive hooks, breakpoints, haptics, and touch-friendly patterns.

Initialize Go templ project with CLI tools and basic structure. Use when starting new templ project, setting up Go HTML templating, mentions 'templ project', 'templ setup', or creating server-side rendered Go web application.