8848 UI Docs

MDX is wired up (@next/mdx). Component pages live here as .mdx files.

Next MDX pages to write

• form — Form, FormField, RHF + Zod usage
• progress — determinate progress
• toggle — press state, variants
• accordion, popover, hover-card, sheet, skeleton, navigation-menu

See the live registry at /components for interactive previews.