During June 2025, Qsolo825 enhanced error diagnostics in the python/mypy repository by implementing a feature that displays the fully qualified name for imported base classes when reporting incompatible overrides. This update, developed using Python and leveraging static analysis and type checking expertise, addressed ambiguity in error messages and streamlined root-cause analysis for type mismatches in large codebases. Qsolo825 expanded test coverage to ensure robust handling of various import scenarios and base-class hierarchies, and updated documentation to support developer onboarding. The work demonstrated depth in both technical implementation and validation, focusing on maintainability and clarity in the type-checking workflow.