What are Remix's meta and links exports?

Remix routes can export meta and links functions to manage document head tags. meta: returns array of meta objects for the route: export function meta({ data, params }) { return [{ title: data?.post.title + " | My Blog" }, { name: "description", content: data?.post.excerpt }, { property: "og:image", content: data?.post.image }]; }. Meta from parent routes is merged with child routes (parent first, child can override). links: returns stylesheets, preloads, and other <link> elements: export function links() { return [{ rel: "stylesheet", href: styles }, { rel: "preload", as: "image", href: heroImage }]; }. Route-specific CSS: each route can load its own stylesheet, which is removed when the route is unmounted. This enables code-splitting CSS by route — only load the CSS for the current route. No helmet library needed — Remix manages the document head natively through these exports.