change(ps): emit output flow in m³/s

Set UnitPolicy output flow/netFlowRate to m³/s (was m³/h).

NOTE: this reverts the output-unit half of e041877 ("keep canonical
flow in m³/s, emit output in m³/h"). Committed at user direction during
dev-lzm → development integration; flagged for review against the
documented PS units decision.

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>

src/specificClass.js

@@ -32,7 +32,7 @@ class PumpingStation extends BaseDomain {
   static unitPolicy = UnitPolicy.declare({
     canonical: { flow: 'm3/s', pressure: 'Pa', power: 'W', temperature: 'K' },
     output:    {
-      flow: 'm3/h', netFlowRate: 'm3/h', level: 'm', volume: 'm3',
+      flow: 'm3/s', netFlowRate: 'm3/s', level: 'm', volume: 'm3',
       overflowVolume: 'm3', underflowVolume: 'm3',
     },
     requireUnitForTypes: [],