Worked on the temporalio/temporal repository to deliver a cross-cluster workflow deletion replication feature, enabling reliable propagation of workflow deletions from active to passive clusters. The solution introduced a feature-flag-gated DeleteExecutionReplicationTask, leveraging Go for backend development and distributed systems design. Archetype-based routing was implemented to support forward compatibility for non-workflow archetypes, while detailed, throttled retry logging improved diagnosability of transient replication failures. The work included expanding unit and functional test coverage to validate the new replication path and routing logic, ensuring robust behavior and preventing workflow resurrection during failover scenarios. No bugs were reported or fixed during this period.