Greg Brown developed a Sentry SDK v2 integration for Temporal workflows and activities in the temporalio/samples-python repository. He refactored error interceptors to ensure accurate error capture and reporting across both workflows and activities, addressing observability needs for distributed systems. Using Python and Temporal, Greg updated dependencies and enhanced documentation to guide users through the new Sentry V2 features. He also expanded the sample set with new activity and workflow definitions, providing a comprehensive demonstration of end-to-end error monitoring. The work was delivered as a focused, single-commit change, reflecting a deep understanding of error monitoring and observability practices.