Create changelog generation workflow

[db-tycoon-stephen]

Summary

Auto-generate CHANGELOG.md from commit messages using conventional commits.

Requirements

• Parse conventional commits (feat:, fix:, etc.)
• Group by type (Features, Fixes, Breaking Changes)
• Link to PRs and issues
• Include contributor credits

Technical Details

• File: .github/workflows/changelog.yml
• Triggers on release or manually
• May use conventional-changelog or similar

Acceptance Criteria

• Changelog generated from commits
• Proper grouping by type
• Links to related PRs/issues
• Works with semantic versioning

References

• v0.2 Proposal - Feature 3.2

[db-tycoon-stephen]

Dependencies

This feature depends on:

1. Branch strategy decision - affects how changelog tracks changes
2. Conventional commits adoption - need team buy-in on commit format

No Major Blockers

This is a safe feature that doesn't require Snowflake credentials.
Can proceed once branch strategy is decided.

[db-tycoon-stephen]

✅ Blockers Resolved

Branch strategy decided (v0.2 release branch). Ready for implementation.

[db-tycoon-stephen]

Completed in PR #11