Auto-label PRs based on pre-commit check results for better visibility of code quality status.

Changes

• Added label automation step to pre-commit job in .github/workflows/ci-cd.yml
• Labels applied:
  • pre-commit: passed (green #0e8a16) on success
  • pre-commit: failed (red #e74c3c) on failure
• Auto-removes stale pre-commit labels when status changes
• Creates labels on-demand if missing from repository

Implementation

Uses github-script@v7 to manage labels via GitHub API, following the same pattern as existing label workflows (add-files-changed-label.yml, add-comment-count-label.yml). Runs only on pull_request events after pre-commit step completes.

- name: Add pre-commit status label
  if: github.event_name == 'pull_request'
  uses: actions/github-script@v7
  with:
    script: |
      const preCommitOutcome = '${{ steps.pre-commit.outcome }}';
      const newLabel = preCommitOutcome === 'success' 
        ? 'pre-commit: passed' 
        : 'pre-commit: failed';
      // ... label management logic

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