Design tokens are the atomic values of a design system - the smallest pieces that define visual style. They bridge the gap between design and development by providing a single source of truth for colors, typography, spacing, and other design decisions. Use it to give an agent explicit responsibilities, steps and constraints.

Well-architected components are reusable, composable, and maintainable. This guide covers patterns for building flexible component APIs that scale across design systems. Use it to give an agent explicit responsibilities, steps and constraints.

The Web Content Accessibility Guidelines (WCAG) 2.2 provide recommendations for making web content more accessible. They are organized into four principles (POUR): Perceivable, Operable, Understandable, and Robust. Use it to give an agent explicit responsibilities, steps and constraints.

Mobile accessibility ensures apps work for users with disabilities on iOS and Android devices. This includes support for screen readers (VoiceOver, TalkBack), motor impairments, and various visual disabilities. Use it to give an agent explicit responsibilities, steps and constraints.

accessibility-compliance — detailed patterns and worked examples captures reusable agent playbook guidance for accessibility & mobile ux. Use it to give an agent explicit responsibilities, steps and constraints.

ARIA (Accessible Rich Internet Applications) provides attributes to enhance accessibility when native HTML semantics are insufficient. The first rule of ARIA is: don't use ARIA if native HTML can do the job. Use it to give an agent explicit responsibilities, steps and constraints.

Initialize a design system with design tokens, component patterns, and documentation. Creates a foundation for consistent UI development. Use it to give an agent explicit responsibilities, steps and constraints.

Review existing UI code for design issues, usability problems, and improvement opportunities. Provides actionable recommendations. Use it to give an agent explicit responsibilities, steps and constraints.

Guided workflow for creating new UI components following established patterns and best practices. Use it to give an agent explicit responsibilities, steps and constraints.

You are an expert design system architect specializing in building scalable, maintainable design systems that bridge design and development. Use it to give an agent explicit responsibilities, steps and constraints.

You are an expert accessibility specialist dedicated to creating inclusive digital experiences that work for all users regardless of ability. Use it to give an agent explicit responsibilities, steps and constraints.

You MUST follow these rules exactly. Violating any of them is a failure. Use it to give an agent explicit responsibilities, steps and constraints.

You are a UI/UX design expert specializing in user-centered design, modern design systems, and accessible interface creation. Use it to give an agent explicit responsibilities, steps and constraints.

For advanced animation and dark mode patterns, see references/advanced-patterns.md:. Use it to give an agent explicit responsibilities, steps and constraints.

Advanced Tailwind CSS v4 patterns including animations, dark mode theming, custom utilities, theme modifiers, namespace overrides, and the v3-to-v4 migration checklist. Use it to give an agent explicit responsibilities, steps and constraints.

react-state-management — detailed patterns and worked examples captures reusable agent playbook guidance for accessibility & mobile ux. Use it to give an agent explicit responsibilities, steps and constraints.

react-native-architecture — detailed patterns and worked examples captures reusable agent playbook guidance for accessibility & mobile ux. Use it to give an agent explicit responsibilities, steps and constraints.

nextjs-app-router-patterns — detailed patterns and worked examples captures reusable agent playbook guidance for accessibility & mobile ux. Use it to give an agent explicit responsibilities, steps and constraints.

You are a React component architecture expert specializing in scaffolding production-ready, accessible, and performant components. Generate complete component implementations with TypeScript, tests, styles, and documentation following modern best practices. Use it to give an agent explicit responsibilities, steps and constraints.

Master React version upgrades, class to hooks migration, concurrent features adoption, and codemods for automated transformation. Use it to give an agent explicit responsibilities, steps and constraints.