P2 wave 1: extract concerns from pumpingStation specificClass

Splits pumpingStation/src/ into focused concern modules. specificClass.js
will be slimmed to an orchestrator in P2.9 (integration); for now both
the inlined logic AND the new modules coexist so tests stay green
throughout.

  src/basin/         BasinGeometry + thresholdValidator (pure)
  src/measurement/   flowAggregator + measurementRouter + calibration
  src/control/       levelBased + flowBased(stub) + manual + index dispatcher
  src/safety/        safetyController split into dryRun + overfill rules
  src/commands/      registry array + handlers (canonical names from start)
  src/editor.js      260 lines of SVG basin-diagram redraw, was inline in .html
  examples/standalone-demo.js  was if(require.main===module) at bottom of specificClass.js
  CONTRACT.md        canonical inputs + outputs + emitted events

Modified:
  src/specificClass.js  removed the 170-line standalone demo block
  pumpingStation.html   oneditprepare/oneditsave delegate to editor.{init,save}
  pumpingStation.js     added admin endpoint serving src/editor.js

102 basic tests pass (60 new + 42 existing).
specificClass.js itself is unchanged in behaviour — integration is P2.9.

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

examples/standalone-demo.js

@@ -0,0 +1,57 @@
+/**
+ * Standalone PumpingStation demo — run with `node examples/standalone-demo.js`.
+ * Builds a station + one pump, calibrates predicted volume, ticks once.
+ * Useful for sanity-checking the orchestrator without Node-RED.
+ */
+const PumpingStation = require('../src/specificClass');
+const RotatingMachine = require('../../rotatingMachine/src/specificClass');
+
+function createPumpingStationConfig(name) {
+  return {
+    general: {
+      logging: { enabled: true, logLevel: 'debug' },
+      name,
+      id: `${name}-${Date.now()}`,
+      flowThreshold: 1e-4,
+    },
+    functionality: { softwareType: 'pumpingStation', role: 'stationcontroller' },
+    basin: { volume: 43.75, height: 10, inflowLevel: 3, outflowLevel: 0.2, overflowLevel: 3.2 },
+    hydraulics: { refHeight: 'NAP', basinBottomRef: 0 },
+    safety: { enableDryRunProtection: false, enableOverfillProtection: false },
+  };
+}
+
+function createMachineConfig(name, position) {
+  return {
+    general: { name, logging: { enabled: false, logLevel: 'debug' } },
+    functionality: { softwareType: 'machine', positionVsParent: position },
+    asset: { supplier: 'Hydrostal', type: 'pump', category: 'centrifugal', model: 'hidrostal-H05K-S03R' },
+  };
+}
+
+function createMachineStateConfig() {
+  return {
+    general: { logging: { enabled: true, logLevel: 'debug' } },
+    movement: { speed: 1 },
+    time: { starting: 2, warmingup: 3, stopping: 2, coolingdown: 3 },
+  };
+}
+
+(async function demo() {
+  const station = new PumpingStation(createPumpingStationConfig('PumpingStationDemo'));
+  const pump1 = new RotatingMachine(createMachineConfig('Pump1', 'downstream'), createMachineStateConfig());
+
+  station.childRegistrationUtils.registerChild(pump1, 'machine');
+
+  setInterval(() => station.tick(), 1000);
+  await new Promise((resolve) => setTimeout(resolve, 10));
+
+  console.log('Initial state:', station.state);
+  station.setManualInflow(300, Date.now(), 'l/s');
+  station.calibratePredictedVolume(3.4);
+
+  console.log('Station state:', station.state);
+  console.log('Station output:', station.getOutput());
+})().catch((err) => {
+  console.error('Demo failed:', err);
+});