update: migrate to GitHub Releases with simplified labels

[ichoosetoaccept]

Part 1 of 3: Migrate to GitHub Releases (#27)

This PR sets up the foundation for using GitHub's native release notes system with a simplified labeling approach.

Changes

1. Added .github/release.yml with three categories:

   • 📚 Content: Documentation and content changes
   • 🛠 Maintenance: Repository and workflow changes
   • Other Changes: Everything else

2. Updated CHANGELOG.md:

   • Added transition notice
   • Updated versioning info to CalVer
   • Kept for historical purposes

3. Updated CONTRIBUTING.md:

   • Simplified PR labeling system
   • Updated release process documentation

4. Updated package.json:

   • Removed auto-changelog dependency
   • Removed related scripts

Next Steps

• Part 2: Version management changes (removing auto-release.yml, adding tag creation)
• Part 3: Final cleanup (remaining automation, hooks)

Resolves #27 (1/3)

[ichoosetoaccept]

Testing Plan for GitHub Release Categories:

1. First, we'll merge this PR (update: migrate to GitHub Releases with simplified labels #28) to set up the base release configuration
2. Then we'll merge test PR test: verify GitHub Release labels #31 which contains a documentation change
3. This will help us verify that:
   • Release notes are generated correctly
   • The documentation change appears under "📚 Content" category
   • Labels are working as expected

Once we confirm everything works as intended with the base setup, we can proceed with:

• PR update: simplify release workflows (part 2) #29: Release workflow changes
• PR update: final cleanup for GitHub Releases (part 3) #30: Final cleanup

[github-actions]

🎉 This PR is included in version 1.0.0 🎉

The release is available on GitHub release

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