## What does this PR do?

<!-- Brief description of the changes -->

## Type of change

- [ ] Bug fix
- [ ] Enhancement
- [ ] Documentation

## Testing

- [ ] Tested on macOS (version: ___)
- [ ] Binary runs without errors: `./stepsecurity-dev-machine-guard --verbose`
- [ ] JSON output is valid: `./stepsecurity-dev-machine-guard --json | python3 -m json.tool`
- [ ] No secrets or credentials included
- [ ] Lint passes: `make lint`
- [ ] Tests pass: `make test`

## Related Issues

<!-- Link any related issues: Fixes #123, Closes #456 -->
