When a run went to a worker, the master's collect-only delegate prompt was
queued at once. ComfyUI's single executor then sat on that prompt waiting
for the worker, so every full workflow queued behind it waited too: with
one worker and a participating master, the master GPU only started once
the worker's first job finished.
On a participating master the delegate prompt is now held back and queued
only once the worker posts its final result (job_complete is_last), so the
master executor keeps pulling full workflows meanwhile. If the worker is
seen idle or unreachable for several probes without delivering, the
delegate is queued anyway so the Collector's timeout path reports it. Both
the immediate dispatch to an idle worker and dispatcher claims use this;
an orchestrator-only master, which has nothing else to run, still queues
the delegate immediately so the run stays visible in its queue.
Co-Authored-By: Claude Fable 5.1 <noreply@anthropic.com>
