A station engaged above startLevel computes a real demand, but if no machine
group is registered (e.g. the Port 2 parent↔group registration was dropped by a
partial redeploy) the demand is silently forwarded nowhere and the pumps never
react — invisible to the operator. levelBased now warns once when engaged with
an empty machineGroups map (throttled via host._warnedNoMachineGroup, re-arms
when a group reappears); manual.forwardDemand warns when neither a group nor a
direct machine is registered.
Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
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