Level-armed shift, derived dryRunLevel, side-panel editor + manual q_out

Runtime (specificClass.js):
- Replace direction-based hysteresis with level-armed _shiftArmed state.
  Arms when level rises past shiftLevel; disarms when level drops below
  startLevel. While armed, ramp foot moves to startLevel and ramp top
  to shiftLevel — both ends shift left, then saturate at 100 % up to
  maxLevel.
- _scaleLevelToFlowPercent now takes (rampStartLevel, rampTopLevel) so
  the saturation point follows the shift state.
- New setManualOutflow mirroring setManualInflow.

Adapter (nodeClass.js):
- Pipe enableShiftedRamp / shiftLevel through to control.levelbased.
- New q_out topic handler.

Editor (pumpingStation.html + new src/editor/ modules):
- Split monolithic <script> into modules: index.js (helpers),
  basin-diagram.js, mode-preview.js, hover-couple.js, oneditprepare.js,
  oneditsave.js — served via /pumpingStation/editor/:file.
- Mode preview redrawn per the SVG diagrams: OFF tier below 0 %, 0 %
  flat from start→inlet, ramp inlet→max, optional shifted-down curve
  start→shift with 100 % saturation past shift.
- Mode preview gains zone bands (dryRun / safetyLow / safe / safetyHigh /
  overflow), level markers (dryRun derived, start, inlet, max, shift,
  overflow), validation ribbon that blocks save on bad ordering.
- Auto-default shiftLevel to 0.9 × maxLevel on enable so the marker is
  always visible.
- All level inputs moved to a side panel left of each diagram, color-
  coded to match line strokes; hover-couple highlights the paired SVG
  line on input focus / mouseover.
- Removed UI for non-static parameters: minHeightBasedOn,
  pipelineLength, maxDischargeHead, staticHead, defaultFluid,
  maxInflowRate, temperatureReferenceDegC,
  timeleftToFullOrEmptyThresholdSeconds, inletPipeDiameter,
  outletPipeDiameter, minLevel (now derived = dryRunLevel).
- foreignObject inputs in basin SVG removed (single source of truth in
  side panel).

Dashboard example (examples/basic-dashboard.flow.json):
- Add manual Q_OUT slider + q_out builder mirroring the existing q_in
  trio so the basin can be exercised end-to-end without a connected
  rotating-machine downstream.

Tests (test/basic/specificClass.test.js):
- Replace direction-shift test with two new cases covering shift-disabled
  hold-zone behaviour and shift-armed/disarmed transitions through
  shiftLevel and startLevel boundaries. 53/53 tests pass.

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

pumpingStation.js

@@ -1,4 +1,5 @@
 const nameOfNode = 'pumpingStation'; // this is the name of the node, it should match the file name and the node type in Node-RED
+const path = require('path');
 const nodeClass = require('./src/nodeClass.js'); // this is the specific node class
 const { MenuManager, configManager } = require('generalFunctions');
 
@@ -37,4 +38,16 @@ module.exports = function(RED) {
     }
   });
 
+  // Editor JS modules — loaded by pumpingStation.html via <script src=...> tags.
+  // Files live in src/editor/. Filename is restricted to a safe charset to
+  // prevent path-traversal.
+  RED.httpAdmin.get(`/${nameOfNode}/editor/:file`, (req, res) => {
+    const safe = String(req.params.file || '').replace(/[^a-zA-Z0-9._-]/g, '');
+    if (!safe.endsWith('.js')) return res.status(400).send('// invalid');
+    res.type('application/javascript');
+    res.sendFile(path.join(__dirname, 'src', 'editor', safe), (err) => {
+      if (err && !res.headersSent) res.status(404).send('// editor module not found');
+    });
+  });
+
 };