During June 2025, TheFrog focused on improving the reliability of Web Platform Tests in the mozilla/gecko-dev repository. They addressed missed references to the addCookieAndSessionCleanup function, refactoring the test cleanup logic to streamline session and cookie management. Working primarily with HTML and leveraging their expertise in web platform testing, TheFrog ensured that the refactored cleanup process maintained existing core functionality while enhancing maintainability. Their approach involved validating all changes against the current test suite to confirm no regressions occurred. This work contributed to more robust and maintainable test infrastructure, though it did not introduce new features during the period.