In April 2026, Jiechen Zhong developed a cross-cluster workflow deletion replication feature for the temporalio/temporal repository, focusing on improving replication reliability and forward compatibility. Jiechen designed and implemented the DeleteExecutionReplicationTask, enabling workflow deletions to be replicated from active to passive clusters and preventing workflow resurrection during failover. The solution introduced archetype-based routing for delete replication tasks, supporting future extensibility beyond workflows. Jiechen enhanced diagnosability by adding throttled retry logging in the replication pipeline and ensured robust test coverage through new unit and functional tests. The work leveraged Go, API design, and distributed systems expertise for backend development.