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Rene De Ren dc27a569d9 handlePressureChange: mirror aggregate flow onto DOWNSTREAM

PS subscribes to MGC's flow.predicted.downstream and uses it as the
outflow estimate for net-flow computation. MGC was only writing to
DOWNSTREAM inside optimalControl (the optimizer's bestFlow TARGET, not
the achieved aggregate), and to AT_EQUIPMENT in handlePressureChange.

During transients — e.g. demand dropping to dead-band keep-alive while
pumps are still ramping down from full throttle — PS saw a stale 25 m³/h
target on DOWNSTREAM while pumps were physically delivering 500+ m³/h.
NetFlow looked small and stable when the basin was actually draining
fast.

flow.act = sum of every pump's current predicted output = achieved
aggregate. Mirror it onto DOWNSTREAM so PS gets a live signal on every
pump flow/pressure update, not just every MGC.handleInput.

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

2026-05-08 17:20:21 +02:00