feat: add Trace Reviews docs page

[Radu-Raicea]

Changes

• add a new Trace Reviews LLM Analytics docs page
• document the Reviews workflow, including scorers, review queues, saved reviews, and how trace reviews relate to evaluations

Testing

• Not run

Checklist

• I've read the docs and/or content style guides.
• Words are spelled using American English
• Use relative URLs for internal links
• I've checked the pages added or changed in the Vercel preview build
• If I moved a page, I added a redirect in vercel.json

[github-actions]

Deploy preview

Status	Details	Updated (UTC)
🟢 Ready	View preview	Apr 01, 2026 08:06PM

[github-actions]

Vale prose linter → found 0 errors, 2 warnings, 0 suggestions in your markdown

Full report → Copy the linter results into an LLM to batch-fix issues.

Linter being weird? Update the rules!

contents/docs/llm-analytics/trace-reviews.mdx — 0 errors, 2 warnings, 0 suggestions

Line	Severity	Message	Rule
7:136	warning	'learnings' is a possible misspelling.	PostHogBase.Spelling
66:15	warning	Avoid trivializing words. 'easy to' can sound dismissive to the reader.	PostHogDocs.Trivializers