Harden GitHub Pages deploy job against transient deploy-pages failures

[Copilot]

The deploy job in the Hugo docs workflow was failing intermittently on actions/deploy-pages@v4 with Deployment failed, try again later. This change adds a single conditional retry path so transient Pages backend errors do not fail the workflow on first attempt.

• What changed

  • Updated .github/workflows/pages.yml in jobs.deploy.
  • Kept the existing primary deploy step.
  • Added continue-on-error: true to the primary deploy step so a retry can run.
  • Added a second deploy step that runs only when the first attempt outcome is failure.

• Behavioral impact

  • First deploy attempt remains the default path.
  • Retry executes only on primary failure (not on success).
  • Permanent failures still surface if retry also fails.

deploy:
  steps:
    - name: Deploy to GitHub Pages
      id: deployment
      uses: actions/deploy-pages@v4
      continue-on-error: true

    - name: Retry GitHub Pages deploy (transient failure)
      id: deployment_retry
      if: steps.deployment.outcome == 'failure'
      uses: actions/deploy-pages@v4