docs: add BATON_DIRECT_COLLABORATORS_ONLY to self-hosted PAT env vars (CXP-579)

[carolinaroncaglia]

Summary

• The --direct-collaborators-only flag was introduced in v0.0.13 (baton-github v0.3.3).
• docs/connector.mdx was partially updated: the Cloud-hosted tab and the Self-hosted GitHub App section already document this option, but the Self-hosted PAT section's optional environment variables table was missing BATON_DIRECT_COLLABORATORS_ONLY.
• This PR adds the missing row to the Self-hosted > Option 1 (PAT) env vars table.

Closes CXP-579 / relates to CXP-562.

Test plan

• Review the Self-hosted > Option 1 (PAT) section in docs/connector.mdx — BATON_DIRECT_COLLABORATORS_ONLY row now appears after BATON_OMIT_ARCHIVED_REPOSITORIES.
• Confirm no other occurrences of the flag are missing across the doc.

🤖 Generated with Claude Code

[linear-code]

CXP-579

CXP-562

[github-actions]

Connector PR Review: docs: add BATON_DIRECT_COLLABORATORS_ONLY to self-hosted PAT env vars (CXP-579)

Blocking Issues: 0 | Suggestions: 0 | Threads Resolved: 0
Review mode: incremental since f348300
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Review Summary

New commits parameterize the CI workflow by replacing hardcoded test values (BATON_ENTERPRISES, BATON_ORGS, BATON_INSTANCE_URL, and sync-test inputs) with GitHub Actions repository variables (${{ vars.* }}). This also removes the BATON_ENTERPRISES env var from CI, so enterprise role syncing will only run if BATON_ENTERPRISES is configured as a repository variable. No security or correctness issues found.

Security Issues

None found.

Correctness Issues

None found.

Suggestions

None.

[github-actions]

No blocking issues found.

[github-actions]

No blocking issues found.