fix: don't fail checks when the PR comment cannot be posted (fork PRs)

[JarbasAl]

Fork PRs run the shared workflows with a read-only GITHUB_TOKEN. The sticky "OVOS PR Checks" comment update then fails with HTTP 403 and takes the whole job down with it, even when all tests passed — currently making every fork PR in every org show 7 red checks (e.g. JarbasHiveMind/HiveMind-core#138/#139/#143).

This treats 401/403 on the comment POST/PATCH as a warning: the comment is cosmetic and must never fail the check itself. All other HTTP errors still propagate.

🤖 Generated with Claude Code

Summary by CodeRabbit

• Bug Fixes
  • Workflows now continue successfully when pull request comments cannot be updated due to read-only permissions.
  • Other HTTP errors continue to be reported for troubleshooting.

[coderabbitai]

Caution

Review failed

The pull request is closed.

ℹ️ Recent review info

⚙️ Run configuration

Configuration used: defaults

Review profile: CHILL

Plan: Pro

Run ID: 66b8a82f-f353-46e4-943d-90e5944d7805

📥 Commits

Reviewing files that changed from the base of the PR and between 02b4bf4 and 37e3817.

📒 Files selected for processing (1)

• scripts/update_pr_comment.py

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📝 Walkthrough

Walkthrough

The PR comment update workflow moves into _update_comment, while main() handles HTTP 401 and 403 responses by warning and returning; other HTTP errors continue to propagate.

Changes

PR comment update

Layer / File(s)	Summary
Comment update delegation and HTTP handling scripts/update_pr_comment.py	main() calls _update_comment(args, content) and suppresses HTTP 401/403 errors with a stderr warning while re-raising other HTTP errors.

Estimated code review effort: 2 (Simple) | ~10 minutes

✨ Finishing Touches

📝 Generate docstrings

• Create stacked PR
• Commit on current branch

🧪 Generate unit tests (beta)

• Create PR with unit tests
• Commit unit tests in branch fix/fork-pr-comment-403

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