When PS commanded turnOffAllMachines, executeSequence's interruptible
abort path triggered transitionToState('operational'), which auto-picked
up the queued delayedMove and re-started the pump. Pump bounced
accelerating ↔ decelerating forever and never reached idle.
Clear state.delayedMove at the top of shutdown/emergencystop sequences
so a user-commanded stop cancels any pending move.
Observed live: in pumpingstation-complete-example the basin drained
past stopLevel and equilibrated at ~0.3 m with one pump stuck at min
flow. With this fix pumps shut down cleanly at stopLevel.
Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
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