blodemd@0.2.1

Patch Changes

• af075cc: Accept seo.siteUrl in docs.json, so a site proxied behind your own domain
  can declare where it is actually published. Canonical tags, og:url, JSON-LD,
  the sitemap, llms.txt and the .md alternates are all built from that value
  instead of being inferred from the request, which a proxy makes impossible.

  Validation now distinguishes authoring from serving: blodemd validate still
  rejects unknown keys so typos fail before they ship, while a published site
  renders through them rather than being replaced by an error page.