Test: Verify shared template works with /close-issue command

## 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`:

```markdown

```

## 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.

Start with knowledge/procedures/git-workflow.md and inspect the existing document structure. Run the /close-issue workflow described in the issue, then verify the requested comment is present and that the worktree, PR references, and post-PR retro steps complete successfully.

Written by the indexing model from the issue text.