Fix: Accept text/markdown content negotiation returns markdown

Web-audit fix skill for the accept-markdown check (Content for agents, SHOULD).

Goal

Honor Accept text/markdown on content URLs with raw markdown, not HTML chrome.

Fix

Honor Accept: text/markdown on content URLs and return raw markdown rather than HTML chrome. Agents parse markdown far more reliably than a JS-rendered page. Serve the markdown twin at the same URL via content negotiation, invisibly to crawlers.

Resources

Copy-paste prompt

Paste this into your coding agent, replacing the Issue line with the Result line from your audit:

Verify

Re-run the audit at https://anc.dev/web-audit or call the audit_website MCP tool; the accept-markdown check should report pass.