Bring detective noop-on-no-failure changes onto updated branch

[strawgate]

Summary

• Merge the detective workflow updates from PR Noop on no failure in detective workflows #606 into this branch.
• Keep the branch updated with latest origin/main and preserve regenerated detective lockfiles.
• Include the prompt/README behavior where detective workflows explicitly noop when no jobs are failing.

Test plan

• make compile

Made with Cursor

[coderabbitai]

Caution

Review failed

Pull request was closed or merged during review

📝 Walkthrough

Walkthrough

Multiple GitHub Actions Detective workflow files were updated to include an early no-op guard that triggers when a workflow run has no jobs with failure conclusions. When triggered, the system emits noop with the message "No failed jobs in workflow run; nothing to report" and halts further processing. Documentation for the detective workflows was also updated to reflect noop as a supported Safe Output.

Possibly related PRs

• Add branch-actions-detective for failed main CI runs #372: Directly modifies the branch-actions-detective workflow file that receives the early noop guard addition in this PR.
• Replace backwards compat symlinks with copies #341: Both PRs adjust noop handling and early-exit control flow across the Actions detective workflow manifests, including gh-aw-pr-ci-detective.lock.yml.

Suggested labels

medium_boom

✨ Finishing Touches

🧪 Generate unit tests (beta)

• Create PR with unit tests
• Post copyable unit tests in a comment
• Commit unit tests in branch fix/pr-labeler-on-the-fence

• 🛠️ Update Documentation: Commit on current branch
• 🛠️ Update Documentation: Create PR

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