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>

src/editor/hover-couple.js

@@ -0,0 +1,29 @@
+// PumpingStation editor — hover-coupling between side-panel input rows
+// and the SVG markers they control. Each .ps-row that carries
+// data-couples-line="<svg-element-id>" highlights that SVG line on
+// mouseenter and clears the highlight on mouseleave.
+
+(function () {
+  const ns = window.PSEditor = window.PSEditor || {};
+
+  ns.hoverCouple = {
+    init() {
+      document.querySelectorAll('.ps-diag-side .ps-row[data-couples-line]').forEach((row) => {
+        const targetId = row.getAttribute('data-couples-line');
+        const target = document.getElementById(targetId);
+        if (!target) return;
+        const enter = () => target.classList.add('ps-line-highlight');
+        const leave = () => target.classList.remove('ps-line-highlight');
+        row.addEventListener('mouseenter', enter);
+        row.addEventListener('mouseleave', leave);
+        // Also highlight while the input inside the row has focus, so
+        // the user keeps the visual feedback while typing.
+        const input = row.querySelector('input');
+        if (input) {
+          input.addEventListener('focus', enter);
+          input.addEventListener('blur', leave);
+        }
+      });
+    },
+  };
+})();