Jinshensheng worked on maintaining the APM SDK within the CocoaPods/Specs repository, focusing on a targeted upgrade to version 2.0.11. This patch-level update was implemented in Ruby and centered on SDK management, ensuring that downstream Pod specifications remained aligned with the latest performance monitoring features. By adhering to semantic versioning, Jinshensheng minimized API surface changes, reducing the risk of integration issues for CocoaPods consumers. The work involved updating repository metadata and carefully managing dependencies to support ongoing compatibility. Over the one-month period, the scope was limited to this feature, reflecting a focused and incremental approach to SDK maintenance.