refactor(cli): early return and improve test coverage

[bearomorphism]

Checklist

• I have read the contributing guidelines

Code Changes

• Add test cases to all the changes you introduce
• Run poetry all locally to ensure this change passes linter check and tests
• Manually test the changes:
  • Verify the feature/bug fix works as expected in real-world scenarios
  • Test edge cases and error conditions
  • Ensure backward compatibility is maintained
  • Document any manual testing steps performed
• Update the documentation for the changes

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Please upload report for BASE (refactors@a8094ae). Learn more about missing BASE report.

Additional details and impacted files

@@             Coverage Diff              @@
##             refactors    #1449   +/-   ##
============================================
  Coverage             ?   97.82%           
============================================
  Files                ?       57           
  Lines                ?     2618           
  Branches             ?        0           
============================================
  Hits                 ?     2561           
  Misses               ?       57           
  Partials             ?        0           

Flag	Coverage Δ
unittests	97.82% <100.00%> (?)

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[Lee-W]

Overall, looks good. One minor question