Making a Nuxt site agent-ready: from Level 1 to Level 4 on isitagentready.com

AI agents are starting to operate websites, not just cite them. What it took to move a production Nuxt site on Cloudflare Workers from a score of 21 to Level 4 on the isitagentready scanner: markdown negotiation, API catalogs, agent-skills indexes, WebMCP, and the traps nobody documents.