* Add @vercel/agent-readability dependency
* Add AI agent detection via @vercel/agent-readability
* Fix md-tracking types, add Vary header and discovery options
- Update TrackMdRequestParams to include 'agent-rewrite' requestType and detectionMethod
- Import DetectionMethod type from @vercel/agent-readability
- Include detectionMethod in tracking fetch body
- Add Vary: Accept header on agent-rewrite responses
- Add discovery options (sitemapUrl, indexUrl) to generateNotFoundMarkdown
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
* Update pnpm-lock.yaml
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
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Co-authored-by: Claude Opus 4.6 (1M context) <noreply@anthropic.com>