[UIPKGE] 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
pnpm dlx shadcn@latest add "https://registry.directory/r/uday-a/tailwind.json"