Worked on enhancing test reliability for the pmndrs/zustand repository by addressing issues related to multi-API workflows. Focused on improving the accuracy of the test suite by updating test parameters to validate state expectations across multiple API instances, which reduced flaky test failures and improved continuous integration stability. Utilized TypeScript and testing frameworks to refine the test logic, ensuring that the suite more accurately reflected real-world usage scenarios. These targeted changes lowered the risk associated with releases by minimizing CI noise and clarifying test outcomes, contributing to a more robust and maintainable codebase without introducing new features during the period.