StimProd,DevReattacher: use CDaemon nonviral nursery coro

We ported these two daemons over to the new nursery mechanism and
they work nicely.

stimBuffApis/livoxGen1/pcloudStimulusProducer.cpp

@@ -428,28 +428,16 @@ PcloudStimulusProducer::getOrCreateAttachedStimulusBuffer(
 	}
 }
 
-struct AllowNextStimulusFrameGuard
-{
-	PcloudStimulusProducer& producer;
-
-	explicit AllowNextStimulusFrameGuard(PcloudStimulusProducer& _producer)
-	: producer(_producer)
-	{}
-
-	~AllowNextStimulusFrameGuard()
-		{ producer.allowNextStimulusFrame(); }
-};
-
 /**	EXPLANATION:
  * productionCDaemon co_awaits this viral timeslice and passes its
- * nursery-slot canceler. Cooperative shutdown uses that canceler between
- * co_await steps; do not use execUncancelableSegmentOrAbort here.
+ * nursery-slot canceler. Cadence (timeslice stamp, residue sleep, overrun
+ * detection) is owned by StimulusProducer::productionCDaemon. Cooperative
+ * shutdown uses the canceler between co_await steps.
  */
 sscl::co::ViralNonPostingInvoker<void>
 PcloudStimulusProducer::stimFrameProductionTimesliceCInd(
 	sscl::SyncCancelerForAsyncWork &canceler)
 {
-	AllowNextStimulusFrameGuard allowNextGuard(*this);
 	StimulusFrame& stimulusFrame = tempStimulusFrame;
 	sscl::AsynchronousLoop frameAssemblyResult(0);
 	std::optional<std::reference_wrapper<StimulusFrame>> intensityStimFrame;
@@ -459,11 +447,6 @@ PcloudStimulusProducer::stimFrameProductionTimesliceCInd(
 	auto& resumeIoContext = device->componentThread->getIoContext();
 
 	// produceFrameReq1_doAssemble_posted
-	/**	EXPLANATION:
-	 * productionCDaemon co_awaits this timeslice outside its uncancelable
-	 * rate-limiter segment; use isCancellationRequested() here, not
-	 * execUncancelableSegmentOrAbort.
-     */
 	if (canceler.isCancellationRequested())
 		{ co_return; }