Fix workflow bugs and enhance automation

[AR21SM]

Description of Changes

Related Issue

Closes #360 #81

Checklist

• I have searched open pull requests to avoid duplicates.
• I have built the book locally using the build instructions and verified my changes work as expected.
• I have written clear, conventional commit messages, as per the Pull Request Guidelines.

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[AR21SM]

hi @aterrel @OriolAbril could you please review this PR

testing :

• https://github.com/AR21SM/DISCOVER-Cookbook/pull/7/commits
• https://github.com/AR21SM/DISCOVER-Cookbook/actions/runs/17349547579/job/49253842505
• https://github.com/AR21SM/DISCOVER-Cookbook/actions/runs/17349585076/job/49253929403
• https://github.com/AR21SM/DISCOVER-Cookbook/actions/runs/17349706242/job/49254178935
• https://github.com/AR21SM/DISCOVER-Cookbook/actions/runs/17349727315/job/49254221290
• https://github.com/AR21SM/DISCOVER-Cookbook/actions/runs/17349766708/job/49254299795

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• another test AR21SM/test-repo-#36

[github-actions]

This pull request has been inactive for 30 days. It will be closed in 14 days if no further activity occurs.

[AR21SM]

@aterrel, could you please review this when you get a chance?

[github-actions]

This pull request has been inactive for 30 days. It will be closed in 14 days if no further activity occurs.