Card 1.0

Required: botcentral ("1.0"), domain, canonical, name, summary, topics, allow_bots, allow, deny, pointers (robots, sitemap, llms on that domain), pages, updated, verification.

Optional: profiles.iso20022 for financial enterprises. Message defs must be real families (pain.001, pacs.008, camt.053, head.001). Access defaults to authenticated.