Wayne Peng worked on stabilizing the Android InstrumentationTestRunner APEX install flow in the facebook/buck2-prelude repository, focusing on improving CI reliability and test consistency. He implemented a rebootless installation method by enabling the --force-non-staged flag for APEX package installs, leveraging Java and build system expertise. When a vrruntimeservice restart issue arose, Wayne introduced a pre_test.sh script to manage device reboots and executed a controlled rollback to maintain system stability. His work resulted in more consistent test runs and faster feedback cycles, demonstrating a thoughtful approach to CI/CD and testing challenges within Android development environments over the course of the month.