PumpingStation Function Anchor

Preparation baseline map. Keep this topology in sync with `ANCHOR-pumpingStation.md` and runtime contracts.

input: registerChild / calibrate* / q_in / changemode output[0]: process output[1]: influx output[2]: registerChild
pumpingStation machine / machineGroupControl measurement (level/flow/pressure) dashboard / manual control parent process / orchestrator flow.predicted.* / control handoff *.measured.<position> q_in / calibrate / mode registerChild + process/influx consumers