Avoid CodeQL false positives for Path_* types

[mauvilsa]

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[greptile-apps]

Confidence Score: 5/5

The PR appears safe to merge with no actionable correctness, security, or maintainability issues identified.

Summary

This PR refactors registered-type lookups to avoid CodeQL false positives while preserving existing caching and duplicate-registration behavior.

• Uses an explicit None result when extend_base_type has no registration key.
• Replaces separate membership and indexed lookups with .get() for keyed registrations.
• Preserves Path_* type identity reuse.

_{Reviews (1) · Last reviewed commit: "Avoid CodeQL false positives for Path_* ..."}

[sonarqubecloud]

Quality Gate passed

Issues
0 New issues
0 Accepted issues

Measures
0 Security Hotspots
100.0% Coverage on New Code
0.0% Duplication on New Code

See analysis details on SonarQube Cloud

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 100.00%. Comparing base (53947c6) to head (ab0a55c).
✅ All tests successful. No failed tests found.

Additional details and impacted files

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  Coverage   100.00%   100.00%           
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  Files           27        27           
  Lines         9077      9078    +1     
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+ Hits          9077      9078    +1     

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