refactor(seo): delegate Agent discovery to nuxt-ai-ready

[harlan-zw]

🔗 Linked issue

Related to #639.

❓ Type of change

• 📖 Documentation
• 🐞 Bug fix
• 👌 Enhancement
• ✨ New feature
• 🧹 Chore
• ⚠️ Breaking change

📚 Description

The site duplicated discovery routing, sitemap parsing, caching, and formatting to work around gaps in nuxt-ai-ready.
Version 3.3.1 now handles those paths, so this change removes the duplicate implementation and configures the module instead.
It preserves setup links, named Skills and demo files, Markdown links, and the retired sitemap exclusion.

🤖 AI disclosure: Harlan Agent Kit modified this description. My AI open-source policy.

[harlan-zw]

🤖 Harlan Agent Kit checked the built Cloudflare Worker against migrated local D1.

All four Agent discovery HTTP tests passed.
An independent review crawled every root and child link: all 98 returned direct HTTP 200.
The three generated files stayed within 80,000 characters, with a measured maximum of 6,730.
HEAD returned empty plain-text responses. POST returned 405, and an unknown discovery file returned 404.
Repeated root and child reads were byte-identical after crawling their page links.
Retired sitemap references and full-content links were absent. The old full-content URL retained its 302 redirect.

This verifies the released module inside the site's real Worker build.
The production deployment and large live sitemap data remain to be checked after merge.

[harlan-github-agent]

🤖 MERGED

Harlan Agent Kit posted this automated review. It is not Harlan's personal review or approval. AI open source policy. Last updated: 2026-10-13 18:27 UTC.

GitHub merged this pull request.

No material findings were recorded.

Review completed. No finding above 80/100.

[harlan-zw]

🤖 Harlan Agent Kit verified the merged migration on live skilld.dev.

A paced crawl resolved all 194 discovery links with direct HTTP 200.
The root and two child files measured 5,489, 29,370, and 14,631 characters.
HEAD, POST rejection, missing-file 404, and the old full-content redirect passed.
Retired sitemap and full-content references were absent from discovery.

Cloudflare serves version 34abb1d3-efb5-47ca-9a0f-c24c8b9b758e, deployed at 2026-10-13T16:53:51Z.
CI and the service review gate passed for head 00dc5f8, with no findings.
The service's mergeability gate stayed pending because the PR merged during review.