ENH: Auto Populate Changelog

[Malmahrouqi3]

Pull request type

• Code changes (bugfix, features)

Checklist

• Tests for the changes have been added (if needed)
• Docs have been reviewed and added / updated
• CHANGELOG.md has been updated (if relevant)

Current behavior

#905 where contributors have to write down manually their PRs' title in the changelog.

New behavior

POC: Simply put, multiple branches (changelog-update{6-10}) were create with negligible changes, then merged into the main branch (changelog-update). The CHANGELOG.md was populated as requested in (IS #905), see the CHANGELOG.md. With bare titles and assigned labels, they were put into their corresponding sections along with prefixes.

Breaking change

• Yes
• No

Additional information

The only observed issue is concurrency of the workflow runs, where some might fail even though each run is ~10s to resolve just trigger re-run or do not merge at 10 PR/s. Further, this can also be resolved with concurrency to sequence the runs but not needed whatsoever. Lastly, please leave a clearance line between the section title and the top PR.

[Copilot]

Pull request overview

This PR introduces an automated workflow to populate the CHANGELOG.md file when pull requests are merged to the develop branch, addressing issue #905 where contributors previously had to manually add their PR titles to the changelog. The automation uses GitHub Actions to detect merged PRs, categorize them based on labels, and insert appropriately formatted entries into the correct CHANGELOG sections.

Key changes:

• Automated CHANGELOG.md updates via GitHub Actions workflow triggered on PR merge
• Updated documentation to reflect the new automated process and clarify PR naming conventions
• Self-documenting entry in CHANGELOG.md for this enhancement

Reviewed changes

Copilot reviewed 4 out of 4 changed files in this pull request and generated 9 comments.

File	Description
.github/workflows/changelog.yml	New GitHub Actions workflow that automatically updates CHANGELOG.md based on PR labels, adding entries to appropriate sections (Added/Changed/Fixed) with correct prefixes (ENH/BUG/MNT/DOC/TST)
docs/development/style_guide.rst	Updated PR naming guidelines to clarify that PR titles should not include acronym prefixes, as the workflow adds them automatically based on labels
docs/development/first_pr.rst	Updated CHANGELOG documentation to inform contributors that entries are auto-generated from PR titles when merged, rather than manually added
CHANGELOG.md	Added self-referential entry for this PR demonstrating the new automated format with "ENH:" prefix

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 81.08%. Comparing base (9cf3dd4) to head (d152aad).
⚠️ Report is 24 commits behind head on develop.

Additional details and impacted files

@@             Coverage Diff             @@
##           develop     #919      +/-   ##
===========================================
+ Coverage    80.27%   81.08%   +0.80%     
===========================================
  Files          104      107       +3     
  Lines        12769    13812    +1043     
===========================================
+ Hits         10250    11199     +949     
- Misses        2519     2613      +94     

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[Malmahrouqi3]

Note to Self: improve documentation to explicitly re-route contributors on how to compose PRs.