Web & Frontend

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Vite fast build tool with HMR. Use for modern frontend builds.

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Produces modularity review documents in both Markdown and HTML formats. Use when writing the final review output from a modularity analysis.

majiayu000 Bundle

Break down PM story into independent frontend task files following UI DEVELOPMENT order: Setup → Static UI → Dynamic Logic → Interactions → Testing. UNIQUE VALUE: Creates independent task files (story-{name}-{n}-{task}.md) for each task. Tasks are ordered by UI development layers. Use this skill when: - Running /frontend.tasks command - User asks to "break down story", "create frontend tasks", "split into tasks" - Have story at docs/reference/pm/stories/ and need organized task files - Need tasks ordered by UI development layers (not random order) - Starting frontend work and want organized task list Task order is CRITICAL: Setup → Static UI → Dynamic → Interactions → Tests Output: Create multiple files in docs/reference/frontend/tasks/ with story- prefix

majiayu000 Bundle

Performance optimization playbook (measure → diagnose → fix → verify) for this repo (React + R3F + Three.js + Vite). Use when asked to improve FPS, reduce jank, lower draw calls, optimize loading/bundle size, or investigate CPU/GPU/memory bottlenecks.

majiayu000 Bundle

Comprehensive code review knowledge including security, performance, accessibility, and quality standards across multiple languages and frameworks

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Zero-assumption accessibility audit. Tests against WCAG 2.2 AA as the floor, not the ceiling. Navigates with keyboard only, reads with screen reader logic, evaluates color contrast, checks semantic HTML, and finds the barriers that exclude real users. Accessibility is not a feature — it's a requirement.

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Accessibility audit and patterns - WCAG 2.1 AA compliance for React apps.

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Testa aplicacoes web usando Playwright. Captura screenshots, executa E2E tests, analisa logs do browser. Integrado com qa-analyst para Phase 6. Use quando: testar frontend, capturar screenshots, validar UI, executar E2E.

majiayu000 Bundle

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.

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Domain UI/UX Expert - Enterprise design systems, component architecture, accessibility, icons, and theming integration.

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Next.js 16 App Router patterns including server components, client components, server actions, route handlers, layouts, metadata API, dynamic routes, file conventions, data fetching, caching strategies, and Next.js best practices for building modern React applications

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Implements product analytics with PostHog including event tracking, feature flags, and session replay. Use when adding analytics, A/B testing, or user behavior tracking to React and Next.js applications.

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Use when doing ANY task involving Supabase. Triggers: Supabase products (Database, Auth, Edge Functions, Realtime, Storage, Vectors, Cron, Queues); client libraries and SSR integrations (supabase-js, @supabase/ssr) in Next.js, React, SvelteKit, Astro, Remix; auth issues (login, logout, sessions, JWT, cookies, getSession, getUser, getClaims, RLS); Supabase CLI or MCP server; schema changes, migrations, security audits, Postgres extensions (pg_graphql, pg_cron, pg_vector).

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Superdesign is a design agent specialized in frontend UI/UX design. Use this skill before implementing any UI that requires design thinking. Common commands: superdesign create-project --title "X" (setup project), superdesign create-design-draft --project-id <id> --title "Current UI" -p "Faithfully reproduce..." --context-file src/Component.tsx (faithful reproduction), superdesign iterate-design-draft --draft-id <id> -p "dark theme" -p "minimal" --mode branch --context-file src/Component.tsx (design variations), superdesign execute-flow-pages --draft-id <id> --pages '[...]' --context-file src/Component.tsx (extend to more pages), superdesign create-component --project-id <id> --name "NavBar" --html-file /tmp/navbar.html --props '[...]' (extract reusable component), superdesign update-component --component-id <id> --html-file /tmp/navbar.html (update existing component), superdesign list-components --project-id <id> (list existing components). Supports line ranges: --context-file path:startLine:endLine

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Tailwind CSS utility-first styling for JARVIS UI components

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Create and style UI components with design tokens. Use when creating components, styling with Tailwind, deciding between Server/Client Components, or using shadcn/ui primitives.

majiayu000 Bundle

网页设计与部署。生成精美的单页 HTML 网页（报告、落地页、数据可视化等），支持一键部署到 Cloudflare Pages。使用 Tailwind CSS + Chart.js + Font Awesome 技术栈。当用户要求制作网页、生成报告页面、创建落地页、数据可视化展示、部署网页到线上时使用。

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Base UI unstyled React components. Covers forms, menus, overlays, composition. Keywords: @base-ui/react, render props.

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Start/restart all development servers (backend, frontend, postgres) and verify they're working

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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. Generates creative, polished code that avoids generic AI aesthetics.

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Expert Next.js 16 with Turbopack, App Router, Cache Components, proxy.ts, React 19. Use when building Next.js apps, routing, caching, server components, or migrating from v15.

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Provides React patterns for hooks, effects, refs, and component design. Covers escape hatches, anti-patterns, and correct effect usage. Use when reading or writing React components with hooks or effects.

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Visual HTML canvas sandbox for agent-driven UI and live previews

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Create project, component, or boilerplate scaffolds.

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Convert files and office documents to Markdown. Supports PDF, DOCX, PPTX, XLSX, images (with OCR), audio (with transcription), HTML, CSV, JSON, XML, ZIP, YouTube URLs, EPubs and more.

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Create visual organizational tools (mind maps, task breakdowns, decision trees, kanban boards, project timelines) designed for neurodivergent thinking patterns. Use when users feel overwhelmed, need to break down tasks, navigate decisions, see dependencies, or track current state. Emphasizes compassionate language, realistic time estimates, energy-aware planning, and anti-perfectionism. v3.1 adds colorblind-safe and monochrome accessibility modes.

majiayu000 Bundle

Senior React/TypeScript/PWA code reviewer specializing in component architecture, hook discipline, frontend security, async state, lifecycle cleanup, browser resource management, client-side data access, temporal handling, props API contracts, and monitoring. Detects subtle bugs like stale closures, unbounded Dexie queries, and silent promise failures. Brutally picky.

majiayu000 Bundle

Comprehensive code review with parallel specialist sub-agents. Analyzes requirements traceability, code quality, security, performance, accessibility, test coverage, and technical debt. Produces detailed findings and calls /qa-gate for final gate decision.

majiayu000 Bundle

Testing Library for React 19 - render, screen, userEvent, waitFor, Suspense. Use when writing tests for React components with Vitest.

majiayu000 Bundle

Web testing with Playwright, Vitest, k6. E2E/unit/integration/load/security/visual/a11y testing. Use for test automation, flakiness, Core Web Vitals, mobile gestures, cross-browser.

majiayu000 Bundle

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. Use when testing web apps, automating browser interactions, or debugging frontend issues.

majiayu000 Bundle

Recommend and generate appropriate data visualizations using GPT-Vis syntax. Supports 20 chart types including statistical charts (line, column, bar, pie, area, scatter, dual-axes, histogram, boxplot, radar, funnel, waterfall, liquid, word-cloud, violin, venn, treemap), flow charts (sankey), and data display (table, summary). Provides workflow from intent recognition to chart selection, syntax generation, and code generation for HTML, React, or Vue.

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Write Tailwind CSS utility classes and component styles following scoped CSS patterns, design tokens, responsive breakpoints, and dark mode support. Use this skill when styling components, creating layouts, implementing design systems, or writing CSS/Tailwind classes. When working on Astro component style blocks, Tailwind configuration files, global CSS files, CSS custom properties and design tokens, component scoped styles, responsive breakpoints and media queries, dark mode theming, CSS Grid and Flexbox layouts, animation and transition styles, or Tailwind @apply directives and utility composition.

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Design efficient, modern app interfaces with mature UI frameworks in React and cross-platform contexts. Use when asked to plan or create app UI/UX layouts, component structures, design tokens, interaction flows, or implementation-ready guidance for React web/mobile (e.g., React Native/Expo) with an emphasis on efficiency-first experiences.

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Design thinking and decision-making for web UI. Use when designing components, layouts, color schemes, typography, or creating aesthetic interfaces. Teaches principles, not fixed values.

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Tailwind CSS patterns for modern UI. Use when styling components, building responsive layouts, creating design systems, or any Tailwind/CSS work.