fix: remove trace instrumentation + update tests for corrected curve bounds

The bogus machineCurve default at pressure "1" (fixed in generalFunctions
086e5fe) made fValues.min=1, which let sub-curve differentials pass
unclamped. With the fix, fValues.min=70000 (the real curve minimum) and
low differentials get clamped. Three tests that accidentally depended on
the bogus min=1 behavior are updated:

- coolprop test: expects fDimension clamped to curve minimum when
  differential < curve range
- pressure-initialization test: uses pressures whose differential falls
  WITHIN the curve range (900 mbar = 90000 Pa > 70000 Pa minimum)
- sequences test: tests upper-bound constraint with setpoint > max,
  then confirms a valid setpoint is applied as-is (was incorrectly
  asserting any setpoint would be clamped to max)

Trace instrumentation from debugging session removed.

91/91 tests green.

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

src/specificClass.js

@@ -967,11 +967,8 @@ _callMeasurementHandler(measurementType, value, position, context) {
         return 0;
       }
 
-      // Clamp: at position ≤ 0 the pump isn't rotating — physical flow is 0.
-      // Without this, curve extrapolation at ctrl=0 + high backpressure
-      // produces large negative values (backflow through a stopped pump)
-      // that confuse dashboards and downstream consumers.
       const rawFlow = this.predictFlow.y(x);
+      // Clamp: at position ≤ 0 the pump isn't rotating — physical flow is 0.
       const cFlow = (x <= 0) ? 0 : Math.max(0, rawFlow);
       this.measurements.type("flow").variant("predicted").position("downstream").value(cFlow,Date.now(),this.unitPolicy.canonical.flow);
       this.measurements.type("flow").variant("predicted").position("atEquipment").value(cFlow,Date.now(),this.unitPolicy.canonical.flow);