Frontend

Reference and maintain consistency with the project's technical stack including frameworks, runtimes, languages, frontend libraries, databases, ORMs, testing tools, deployment platforms, and third-party services. Use this skill when making technology choices or selecting libraries that need to align with the existing stack, adding new dependencies to package.json, pnpm-workspace.yaml, requirements.txt, or other dependency management files, implementing features using the project's established frameworks, ORMs, databases, or APIs, writing code in the project's primary language and runtime environment, setting up testing infrastructure with the project's test frameworks, configuring CI/CD pipelines or deployment settings, integrating third-party services that match the project's existing integrations, ensuring compatibility with the project's build tools and bundlers, or ensuring any technical implementation decision aligns with the project's established technologies, architectural patterns, and conventions doc

Use when implementing authentication, user management, organization/tenant management, team invitations, role-based access control (RBAC), or multi-tenant architecture in a Supabase project. Provides complete schema, API templates, and frontend components for AuthHub-style authentication.

Create React components following Atomic Design and project patterns. Use when asked to create a new component, build UI, or implement a feature with React.

Guide users through creating Agent Skills for Claude Code. Use when the user wants to create, write, author, or design a new Skill, or needs help with SKILL.md files, frontmatter, or skill structure.

Build terminal UIs in Rust with Ratatui. Use when creating TUI applications, immediate-mode rendering, high-performance terminal interfaces, or production Rust CLIs.

Vue 3 - Progressive JavaScript framework with Composition API, reactivity system, single-file components, Vite integration, TypeScript support

Diagnose and improve WPF performance for the widget host app: UI virtualization, async usage, rendering cost, memory leaks, and profiling workflow. Use when investigating slow startup, laggy UI, or high memory usage.

Guide for Next.js App Router dynamic routes and pathname parameters. Use when building pages that depend on URL segments (IDs, slugs, nested paths), accessing the `params` prop, or fetching resources by identifier. Helps avoid over-nesting by defaulting to the simplest route structure (e.g., `app/[id]` instead of `app/products/[id]` unless the URL calls for it).

UI/UX design intelligence. 50 styles, 21 palettes, 50 font pairings, 20 charts, 8 stacks (React, Next.js, Vue, Svelte, SwiftUI, React Native, Flutter, Tailwind). Actions: plan, build, create, design, implement, review, fix, improve, optimize, enhance, refactor, check UI/UX code. Projects: website, landing page, dashboard, admin panel, e-commerce, SaaS, portfolio, blog, mobile app, .html, .tsx, .vue, .svelte. Elements: button, modal, navbar, sidebar, card, table, form, chart. Styles: glassmorphism, claymorphism, minimalism, brutalism, neumorphism, bento grid, dark mode, responsive, skeuomorphism, flat design. Topics: color palette, accessibility, animation, layout, typography, font pairing, spacing, hover, shadow, gradient.

Guide for creating, validating, and managing Claude Code plugin marketplaces with schema validation tools

Guide for choosing between Server Components and Client Components in Next.js App Router. CRITICAL for useSearchParams (requires Suspense + 'use client'), navigation (Link, redirect, useRouter), cookies/headers access, and 'use client' directive. Activates when prompt mentions useSearchParams, Suspense, navigation, routing, Link component, redirect, pathname, searchParams, cookies, headers, async components, or 'use client'. Essential for avoiding mixing server/client APIs.

Modern React 19+ patterns with TypeScript

Tailwind CSS 4.1+ patterns. Use when styling components, responsive design, container queries, masks, shadows, or animations. (project)

Controlled batch execution of implementation plans with review checkpoints between phases. Loads plan, critically reviews for issues, executes tasks in batches, then pauses for architect feedback before continuing. Use when you have a complete implementation plan from brainstorming/writing-plans and want structured execution with quality gates. Do NOT use for ad-hoc implementation, exploratory coding, or when you don't have a formal plan - just implement directly with code review at the end.

Patterns for implementing Toolsmith library functions. Covers pragmatic internal approach using raw operators with exception documentation, monadic behavior patterns (Result/Validation/plain value), predicate special rules, and the distinction between building Toolsmith vs consuming it. Use when implementing functions FOR the Toolsmith library itself.

Automatically validate Moodle templates, JavaScript, and CSS for WCAG 2.1 Level AA accessibility compliance. Checks semantic HTML, ARIA patterns, keyboard navigation, color contrast, and screen reader compatibility. Activates when working with Mustache templates, AMD modules, or discussing accessibility, a11y, WCAG, screen readers, or keyboard navigation.

Use when styling UI components or layouts with Tailwind CSS - mobile-first design, responsive utilities, custom themes, or component styling.NOT when plain CSS, CSS-in-JS (styled-components), or non-Tailwind frameworks are involved.Triggers: "style component", "responsive design", "mobile-first", "dark theme", "tailwind classes", "dashboard grid".

Unit testing patterns with Vitest. Use when writing tests for TypeScript code.

Generate Svelte components with TypeScript and scoped styles. Triggers on "create svelte component", "generate svelte file", "svelte module", ".svelte component".

Create distinctive, production-grade frontend interfaces with high design quality. Use this skill when the user asks to build web components, pages, or applications. Generates creative, polished code that avoids generic AI aesthetics.