Worked on stabilizing Buck2 UI test integration within the facebook/buck2-prelude repository, focusing on adapting Apple build rules to support Xcode 16.3 changes. Addressed framework resolution for XCUIAutomation by updating build logic to locate frameworks in both Frameworks and PrivateFrameworks directories, ensuring reliable builds across Xcode versions. Enhanced the UITest-Runner test harness to align with new framework discovery, reducing flaky test runs and improving CI stability. Collaborated across projects to synchronize Apple build rules and test workflows. Utilized skills in Apple Development, Xcode, and Python to deliver a targeted bug fix that maintained build reliability for Apple platform UI testing.