What problem does it solve? AI-generated interfaces often look generic, ignore accessibility requirements, and lack proper loading, error, and empty states. This Skill enforces production-quality UI engineering practices so components are accessible, responsive, and consistent with the project's design system. ## Core Features & Use Cases - Component Architecture Guidance: Enforces composition over configuration, colocated file structures, and separation of data fetching from presentation. - Accessibility Compliance: Applies WCAG 2.1 AA standards including keyboard navigation, ARIA labels, focus management, and meaningful empty/error states. - Design System Adherence: Avoids the generic "AI aesthetic" by enforcing consistent spacing scales, semantic color tokens, and proper typography hierarchy. - Use Case: When building a new task management page, use this Skill to generate a responsive TaskList component with skeleton loading states, optimistic updates via React Query, keyboard-accessible controls, and mobile-first breakpoints. ## Quick Start Ask the agent to build a responsive, accessible task list component with loading, error, and empty states following the project's design system.