Runs a full technical SEO audit on a single web page. Composes our /preflight + /url-metadata + /url-links endpoint data into a structured pass/ warn/ fail report. Verify redirects, canonicals, and indexability. No black-box scoring; just deterministic, composable signal you can act on. Every threshold is documented at https://minifetch.com/skills/seo-page-audit/SKILL.md