Tailwind v4 design tokens (light + dark), motion tokens, base layer styling, and shadow utilities. Identical token set to the Vue/Nuxt registry — tokens are framework-neutral. Ships the full canonical tailwind.css as `files` content; the cssVars block stays as a merge safety net for consumers with a pre-existing globals.css.
npx shadcn@latest add https://uipkge.dev/r/react/tailwind.jsontailwind