During February 2025, Dongyan Su enhanced the facebook/buck2-prelude repository by developing features to improve test instrumentation tracking and stability in remote execution pipelines. Leveraging Starlark and expertise in build system configuration and testing infrastructure, Dongyan introduced dynamic use case IDs for Android instrumentation tests, enabling granular tracking by execution context. Additionally, Dongyan implemented configurable device setup parameters for Buck tests, allowing for deterministic device states and reducing flakiness in remote test runs. These changes provided more reliable test signals and improved data quality for CI performance reviews, reflecting a focused and thoughtful approach to engineering for test reliability.