Three things a pause and an interval were quietly losing:
- A rebuild builds a fresh pipeline, so nothing is paused any more and no
resume ever comes for what the old one parked. Release it on rebuild.
- POST /flows/{name}/step takes the oldest parked item and runs that one wave
while the flow stays paused, so a held-back cascade can be walked through.
Nothing parked answers plainly rather than failing.
- A per-port interval was leading-edge only: a producer going quiet inside the
window left the consumer on the value before it. The held value is kept and
a flush item scheduled on the queue's existing timer, so the window ends with
a delivery. One timer in flight per node, and none without a queue to run it.
stroblme
f05ec47869