Test Issue for /close-issue Command

This is a simple test to verify the new shared template structure works correctly.

Task

Add a test comment to the end of knowledge/procedures/git-workflow.md:

<!-- Test: /close-issue with shared template verified on 2025-08-04 -->

Success Criteria

• The /close-issue command works with the new shared template
• Worktree is created properly
• Comment is added to the file
• PR is created with proper references
• Post-PR retro happens

This tests PR #1185's changes to ensure the shared universal template works correctly.