P5 wave 1: extract rotatingMachine concerns into focused modules

src/curves/         loader + normalizer (with cross-pressure anomaly
                      detection) + reverseCurve helper
  src/prediction/     predictors (predictFlow/Power/Ctrl) +
                      groupPredictors (lazy group-scope views) +
                      OperatingPoint (pressure-driven prediction setpoints)
  src/drift/          DriftAssessor (per-metric drift) + PredictionHealth
                      (composes flow/power/pressure into HealthStatus +
                      confidence sibling — see OPEN_QUESTIONS 2026-05-10)
  src/pressure/       VirtualPressureChildren (dashboard-sim) +
                      PressureInitialization (real-vs-virtual tracking) +
                      PressureRouter (dispatches by position)
  src/state/          stateBindings (state.emitter listener helper) +
                      isOperationalState
  src/measurement/    measurementHandlers (dispatcher for flow/power/temp/pressure)
  src/flow/           flowController (handleInput body — execSequence,
                      execMovement, flowMovement, emergencystop)
  src/display/        workingCurves (showWorkingCurves + showCoG admin)
  src/commands/       canonical names: set.mode, cmd.startup/shutdown/estop,
                      set.setpoint, set.flow-setpoint,
                      data.simulate-measurement, query.curves, query.cog,
                      child.register. execSequence demuxes by payload.action
                      to canonical cmd.* handlers.
  CONTRACT.md         inputs/outputs/events/children surface

110 basic tests pass (100 new + 10 pre-existing).
specificClass.js / nodeClass.js untouched — integration in P5 wave 2.

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

test/basic/curveNormalizer.basic.test.js

@@ -0,0 +1,88 @@
+const test = require('node:test');
+const assert = require('node:assert/strict');
+
+const { UnitPolicy } = require('generalFunctions');
+const {
+  normalizeMachineCurve,
+  normalizeCurveSection,
+  convertUnitValue,
+} = require('../../src/curves/curveNormalizer');
+
+function makePolicy() {
+  return UnitPolicy.declare({
+    canonical: { pressure: 'Pa', flow: 'm3/s', power: 'W', temperature: 'K' },
+    output: { pressure: 'mbar', flow: 'm3/h', power: 'kW', temperature: 'C' },
+    curve: { pressure: 'mbar', flow: 'm3/h', power: 'kW', control: '%' },
+  });
+}
+
+function captureLogger() {
+  const warns = [];
+  return {
+    warn: (m) => warns.push(m),
+    warns,
+  };
+}
+
+test('normalizeMachineCurve: rejects raw without nq/np', () => {
+  const policy = makePolicy();
+  assert.throws(() => normalizeMachineCurve(null, policy), /missing required nq\/np/);
+  assert.throws(() => normalizeMachineCurve({ nq: { 700: { x: [0], y: [0] } } }, policy), /missing required nq\/np/);
+  assert.throws(() => normalizeMachineCurve({ np: { 700: { x: [0], y: [0] } } }, policy), /missing required nq\/np/);
+});
+
+test('normalizeMachineCurve: converts pressure mbar -> Pa and flow m3/h -> m3/s', () => {
+  const policy = makePolicy();
+  const raw = {
+    nq: {
+      1000: { x: [0, 100], y: [0, 3600] }, // 3600 m3/h = 1 m3/s
+    },
+    np: {
+      1000: { x: [0, 100], y: [0, 1] }, // 1 kW = 1000 W
+    },
+  };
+  const out = normalizeMachineCurve(raw, policy);
+  // 1000 mbar = 100000 Pa
+  const pressureKey = Object.keys(out.nq)[0];
+  assert.equal(Number(pressureKey), 100000);
+  assert.ok(Math.abs(out.nq[pressureKey].y[1] - 1) < 1e-9, `expected 1 m3/s got ${out.nq[pressureKey].y[1]}`);
+  assert.ok(Math.abs(out.np[pressureKey].y[1] - 1000) < 1e-6, `expected 1000 W got ${out.np[pressureKey].y[1]}`);
+});
+
+test('normalizeCurveSection: warns on cross-pressure median > 3x jump', () => {
+  const logger = captureLogger();
+  const section = {
+    1000: { x: [0, 50, 100], y: [0, 5, 10] },     // median 5
+    1100: { x: [0, 50, 100], y: [0, 50, 100] },   // median 50 (10x jump)
+  };
+  normalizeCurveSection(section, 'm3/h', 'm3/h', 'mbar', 'mbar', 'nq', logger);
+  const hit = logger.warns.find((w) => /Curve anomaly/.test(w));
+  assert.ok(hit, `expected a Curve anomaly warning, got: ${JSON.stringify(logger.warns)}`);
+  assert.match(hit, /pressure 1100/);
+});
+
+test('normalizeCurveSection: does not warn on smooth progressions', () => {
+  const logger = captureLogger();
+  const section = {
+    1000: { x: [0, 50, 100], y: [0, 5, 10] },
+    1100: { x: [0, 50, 100], y: [0, 6, 11] },
+  };
+  normalizeCurveSection(section, 'm3/h', 'm3/h', 'mbar', 'mbar', 'nq', logger);
+  assert.equal(logger.warns.filter((w) => /Curve anomaly/.test(w)).length, 0);
+});
+
+test('normalizeCurveSection: throws when x/y length mismatch', () => {
+  assert.throws(
+    () => normalizeCurveSection({ 1000: { x: [0, 50], y: [0, 5, 10] } }, 'm3/h', 'm3/s', 'mbar', 'Pa', 'nq', null),
+    /Invalid nq section/
+  );
+});
+
+test('convertUnitValue: identity when units match or missing', () => {
+  assert.equal(convertUnitValue(42, 'm3/h', 'm3/h'), 42);
+  assert.equal(convertUnitValue(42, null, null), 42);
+});
+
+test('convertUnitValue: throws on non-finite input', () => {
+  assert.throws(() => convertUnitValue('not-a-number', 'm3/h', 'm3/s', 'test'), /not finite/);
+});