Worked on enhancing automated refactoring in the bmuschko/rewrite repository, focusing on improving the ChangeType recipe to address variable-name conflicts with class names. Applied Java development and code refactoring skills to refine the renaming logic, ensuring variables are only renamed when their type changes, which prevents unintended conflicts during type-based transformations. Added comprehensive testing to validate that variables sharing a name with a class are not incorrectly renamed, thereby increasing the reliability of automated refactoring. This work reduced the risk of rename-induced regressions and improved confidence in type-aware code modifications, demonstrating a careful and test-driven approach to Java code quality.