frontend▌

Comprehensive guide for building modern, accessible, and composable UI components. \n \n Covers component taxonomy (primitives, components, blocks, templates), core design principles, and accessibility implementation including ARIA, keyboard navigation, and WCAG compliance \n Includes patterns for composable APIs, polymorphism, controlled/uncontrolled state, and the as-child pattern for flexible element composition \n Provides guidance on design tokens, theming systems, styling approaches, and u

ui-ux-designer

Modern React 19 patterns for Server Components, Actions, concurrent features, and TypeScript development. \n \n Covers core hooks (useState, useEffect, useRef, useMemo, useCallback) with TypeScript typing and custom hook extraction patterns \n Includes React 19 features: use() hook, useOptimistic, useFormStatus, useFormState, Server Actions, and Server Components with mixed architecture examples \n React Compiler automatic optimization eliminates manual memoization; includes setup, configuration

Comprehensive guide for applying 200+ VueUse composables to Vue.js and Nuxt projects. \n \n Covers 14 functional categories: state management, DOM elements, browser APIs, sensors, networking, animations, components, watchers, reactivity, arrays, time utilities, and integrations with Firebase, Electron, RxJS, and more. \n Each composable includes an invocation rule (AUTO, EXTERNAL, or EXPLICIT_ONLY) to guide when and how to use it; consult detailed references for usage patterns and type declarati

Vue Router 4 patterns, navigation guards, and route-lifecycle best practices. \n \n Covers five navigation guard patterns including async/await handling, deprecated next() function migration, infinite redirect loops, and param-change detection \n Addresses route-lifecycle gotchas like stale data when navigating between same routes and event listener cleanup on component unmount \n Includes guidance on beforeRouteEnter guard limitations, component instance access, and param-triggered navigation b

Use this skill when the user wants to reverse-engineer a public website's design primitives into project-local starter token files.

High-level system architecture design, decision documentation, and technology trade-off evaluation for distributed systems. \n \n Guides full architecture workflows from requirements gathering through stakeholder review, with explicit trade-off analysis and failure mode planning \n Produces architecture diagrams (Mermaid format), Architecture Decision Records (ADRs), and technology recommendations with documented rationale \n Covers architectural patterns, microservices structuring, scalability

CLI tools for Svelte 5 documentation lookup and code analysis with built-in autofixer. \n \n Three core commands: list-sections to browse available docs, get-documentation to fetch full documentation for specific topics, and svelte-autofixer to analyze code and suggest fixes \n Autofixer supports Svelte 4 and 5 targeting via --svelte-version flag and async mode via --async option \n Accepts both inline code (with escaped $ characters) and file paths for analysis \n Designed for use within the sv

Fundamental design principles for writing maintainable, testable Python code. \n \n Covers five core patterns: KISS (Keep It Simple), Single Responsibility Principle, Separation of Concerns, Composition Over Inheritance, and the Rule of Three \n Includes practical code examples contrasting anti-patterns with recommended approaches for each principle \n Provides layered architecture guidance (API, Service, Repository layers) with dependency injection patterns for testability \n Emphasizes explici

Transform threat analysis into actionable security requirements. \n \n Converts STRIDE threat categories into functional, non-functional, and constraint requirements with automatic priority calculation based on impact and likelihood \n Generates security user stories, acceptance criteria, and test cases directly from threats; includes traceability matrices linking threats to requirements \n Maps requirements to compliance frameworks (PCI-DSS, HIPAA, GDPR, SOC2, NIST, ISO 27001, OWASP) and identi