Audit PRs #38 #39 #41 #42 GitHub metadata cleanup

[cbusillo]

Current Status

Created from parent audit plan #63.

Scope

Review the GitHub metadata/docs cleanup stack for intent, current necessity, and whether only .github/github.json should be carried forward. Parent: #63. PRs: #38 #39 #41 #42

Review Checklist

• Intent: why did this PR/group exist?
• Surface: what files and runtime paths changed?
• Risk: compaction, token pressure, agent behavior, auth, repo workflow, or other?
• Verdict: keep as-is, keep with rewrite, defer, or drop.
• Validation evidence recorded.