During September 2025, Xu enhanced the kuzudb/kuzu repository by improving the robustness and integration of the FSM Leak Checker for end-to-end testing. Xu introduced a SKIP_FSM_LEAK_CHECK token, allowing selective bypass of leak checks in specific tests, and refactored the FSMLeakChecker for greater reliability and maintainability. By integrating the leak checker directly into the test runner, Xu ensured comprehensive coverage across all relevant e2e tests, which reduced flaky outcomes and accelerated feedback cycles. This work leveraged C++ development, CI/CD practices, and knowledge of database internals, resulting in deeper test stability and more controlled, efficient release processes.