Accessibility (a11y) for the Next.js/React/shadcn-ui stack this collection scaffolds — native semantics over ARIA-patched divs, focus management for Base UI-backed Dialog/Sheet/Select, Next.js App Router route-announcer gotchas, next/image alt text, color-contrast checks for the CSS-variable token system, and prefers-reduced-motion handling for Tailwind's animate-* utilities. Cross-references ts-forms for label/error-announcement patterns and ts-testing-playwright for accessible-role-based locators instead of duplicating either.
