Fix Concurrency & Spans

[kraftp]

• Port Fix a Regression in Duplicate Workflow Detection dbos-transact-ts#1207
• Close Emit queue name with OTEL logs and traces #539

[dosubot]

Documentation Updates

1 document(s) were updated by changes in this PR:

System Database Schema

View Changes

@@ -468,7 +468,7 @@
 
 ### Step Results
 
-Individual operation results are recorded by [`record_operation_result`](https://github.com/dbos-inc/dbos-transact-py/blob/12049d833dddbcaaea18d921149e2c33aad37ecf/dbos/_sys_db.py#L1378-L1388), which calls [`_record_operation_result_txn`](https://github.com/dbos-inc/dbos-transact-py/blob/12049d833dddbcaaea18d921149e2c33aad37ecf/dbos/_sys_db.py#L1311-L1377) to insert into `operation_outputs` using INSERT ... ON CONFLICT DO NOTHING.
+Individual operation results are recorded by [`record_operation_result`](https://github.com/dbos-inc/dbos-transact-py/blob/12049d833dddbcaaea18d921149e2c33aad37ecf/dbos/_sys_db.py#L1378-L1388), which calls [`_record_operation_result_txn`](https://github.com/dbos-inc/dbos-transact-py/blob/12049d833dddbcaaea18d921149e2c33aad37ecf/dbos/_sys_db.py#L1311-L1377) to insert into `operation_outputs` using INSERT ... ON CONFLICT DO UPDATE. When a conflict occurs on the composite primary key `(workflow_uuid, function_id)`, the system updates the `completed_at_epoch_ms` timestamp to ensure the completion time is properly recorded even when the same operation result is inserted multiple times due to retries or concurrent workflow execution.
 
 ### Queue Management
 

^{How did I do? Any feedback?}