fix(ps): persist stopLevel/holdLevel as numbers across editor save

Node-RED's auto-form-binding writes <input type="number"> values into the
node object as strings. The editor's setNumberField helper used strict
Number.isFinite(val) which rejects "0.5" and blanked the input on reopen,
so users saw their stopLevel/holdLevel values disappear after clicking Done.

- oneditsave: explicitly parseFloat stopLevel, holdLevel, and
  deadZoneKeepAlivePercent so they land in the node as numbers (matches the
  treatment of startLevel/maxLevel).
- oneditprepare: parseFloat node.holdLevel / node.deadZoneKeepAlivePercent
  before the Number.isFinite check so existing string-typed flows still
  render their saved values.
- index.js setNumberField: defensively coerce stringy numbers so this
  gotcha can't bite a future field.

Verified end-to-end in headless Chromium: type new values, click Done,
reopen — values persist and the stopLevel/holdLevel marker lines render
at the correct x in the level-based mode preview.

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

.gitignore

@@ -0,0 +1,10 @@
+# Repo dev artifacts. Mirrors the deny list in .npmignore so the two stay
+# in sync — anything that shouldn't be committed AND shouldn't ship in the
+# npm tarball goes in both files.
+node_modules/
+package-lock.json
+*.tgz
+.env
+.env.*
+.DS_Store
+npm-debug.log*

.npmignore

@@ -0,0 +1,31 @@
+# === Mirrors .gitignore — items below this block are also excluded from
+#     the npm tarball. Kept here verbatim so npm pack doesn't fall back to
+#     the .gitignore inheritance (silent + surprising). ===
+node_modules/
+package-lock.json
+*.tgz
+.env
+.env.*
+.DS_Store
+npm-debug.log*
+
+# === Dev-only content the npm tarball doesn't need ===
+# Tests + their harness — Node-RED loads the entry .js, not the test tree.
+test/
+*.test.js
+
+# Wiki, screenshots, drawio diagrams — useful in the repo, big in the pack.
+wiki/
+
+# Local simulation harness + scenario data (dev-only). 870+ KB on disk.
+simulations/
+
+# Build/maintenance tooling not used at runtime.
+tools/
+
+# Project memory + IDE configs.
+.claude/
+.codex/
+.repo-mem/
+CLAUDE.md
+CLAUDE.local.md

CLAUDE.md

@@ -0,0 +1,40 @@
+# pumpingStation — Claude Code context
+
+Wet-well basin model and pump orchestration.
+Part of the [EVOLV](https://gitea.wbd-rd.nl/RnD/EVOLV) wastewater-automation platform.
+
+## S88 classification
+
+| Level | Colour | Placement lane |
+|---|---|---|
+| **Process Cell** | `#0c99d9` | L5 |
+
+## Flow layout rules
+
+When wiring this node into a multi-node demo or production flow, follow the
+placement rule set in the **EVOLV superproject**:
+
+> `.claude/rules/node-red-flow-layout.md` (in the EVOLV repo root)
+
+Key points for this node:
+- Place on lane **L5** (x-position per the lane table in the rule).
+- Stack same-level siblings vertically.
+- Parent/children sit on adjacent lanes (children one lane left, parent one lane right).
+- Wrap in a Node-RED group box coloured `#0c99d9` (Process Cell).
+
+## Folder & File Layout
+
+Every per-node file MUST use the folder name (`pumpingStation`) **exactly**, case-sensitive. Full rule: [`.claude/rules/node-architecture.md`](https://gitea.wbd-rd.nl/RnD/EVOLV/src/branch/development/.claude/rules/node-architecture.md) in the EVOLV superproject.
+
+| Path | Required name |
+|---|---|
+| Entry file | `pumpingStation.js` |
+| Editor HTML | `pumpingStation.html` |
+| Node adapter | `src/nodeClass.js` |
+| Domain logic | `src/specificClass.js` |
+| Editor JS modules | `src/editor/*.js` (extract when inline editor JS exceeds ~50 lines) |
+| Tests | `test/{basic,integration,edge}/*.test.js` |
+| Example flows | `examples/*.flow.json` |
+
+
+When adding new files, read the rule above first to avoid drift.

CONTRACT.md

@@ -0,0 +1,58 @@
+# pumpingStation — Contract
+
+Hand-maintained for Phase 2; the `## Inputs` table is generated from
+`src/commands/index.js` (see Phase 9 generator). Keep ≤ 80 lines.
+
+## Inputs (msg.topic on Port 0)
+
+| Canonical | Aliases (deprecated) | Payload | Effect |
+|---|---|---|---|
+| `set.mode` | `changemode` | `string` — one of `manual`, `levelbased`, `flowbased`, `none` | Switches the control strategy. |
+| `child.register` | `registerChild` | `string` — the child node's Node-RED id | Resolves the child via `RED.nodes.getNode` and registers it through `childRegistrationUtils` at the supplied `msg.positionVsParent`. |
+| `cmd.calibrate.volume` | `calibratePredictedVolume` | numeric (number or numeric string) — m³ | Resets the predicted-volume series and seeds it with the supplied value; recomputes level. |
+| `cmd.calibrate.level` | `calibratePredictedLevel` | numeric — metres | Resets the predicted-level series and seeds it with the supplied value; recomputes volume. |
+| `set.inflow` | `q_in` | number, numeric string, or `{ value, unit, timestamp }` | Pushes a manual inflow measurement onto the predicted-flow series. `unit` may be on the message (`msg.unit`) or inside the object payload. |
+| `set.outflow` | `q_out` | number, numeric string, or `{ value, unit, timestamp }` | Pushes a measured outflow value into the basin balance. Same payload conventions as `set.inflow`. |
+| `set.demand` | `Qd` | numeric — child setpoint demand | Forwards the demand to direct children (machineGroups / machines / stations). Only honoured in `manual` mode; in other modes the call is logged at `debug` and discarded. |
+
+Aliases log a one-time deprecation warning the first time they fire.
+
+## Outputs (msg.topic on Port 0/1/2)
+
+- **Port 0 (process):** `msg.topic = config.general.name`. Payload built by
+  `outputUtils.formatMsg(..., 'process')` from `getOutput()` — delta-compressed
+  (only changed fields are emitted).
+- **Port 1 (InfluxDB telemetry):** same shape as Port 0, formatted with the
+  `'influxdb'` formatter.
+- **Port 2 (registration):** at startup the node sends one
+  `{ topic: 'registerChild', payload: <node.id>, positionVsParent, distance }`
+  to the upstream parent.
+
+## Events emitted by `source.measurements.emitter`
+
+The `MeasurementContainer` fires `<type>.<variant>.<position>` whenever
+the corresponding series receives a new value. Parents subscribe via the
+generic `child.measurements.emitter.on(eventName, ...)` handshake.
+pumpingStation publishes:
+
+- `volume.predicted.atequipment` — basin volume integrator output (m³).
+- `level.predicted.atequipment` — basin level (m), recomputed from volume.
+- `flow.predicted.in` (childed `manual-qin`) — manual inflow injections.
+- `volume.measured.atequipment`, `level.measured.<position>`,
+  `pressure.measured.<position>`, `temperature.measured.atequipment`,
+  `flow.predicted.<in|out>` (childed by upstream child id) — when a
+  matching child measurement arrives.
+
+The exact set is data-driven by which children register and what they
+publish; downstream consumers should subscribe by event name, not assume
+a fixed catalogue.
+
+## Children registered by this node
+
+pumpingStation acts as a parent for `measurement`, `machine`, `machinegroup`,
+and `pumpingstation` software types. Position labels accepted from
+children are `upstream`, `downstream`, `atequipment` (and the synonyms
+`in` / `out` for predicted-flow children). Child-registration plumbing is
+documented in `MODULE_SPLIT.md`; this node does not receive children
+through Port 0 input — registration arrives on Port 2 from the child via
+the standard `childRegistrationUtils` handshake.

README.md

@@ -1 +1,10 @@
-# rotating machine
+# pumpingStation
+
+Wet-well basin model and pump orchestration node for EVOLV.
+
+The detailed documentation lives in [`wiki/`](wiki/):
+
+- [`wiki/functional-description.md`](wiki/functional-description.md) defines the shared basin model, pipe reference semantics, safety points, net-flow selection, and child registration behaviour.
+- [`wiki/modes/`](wiki/modes/) documents control-mode-specific behaviour. For v1.0 the editor exposes `levelbased` and `manual`; levelbased supports linear and log curves with separate rising/falling ramp semantics.
+- [`wiki/diagrams/basin-model.drawio.svg`](wiki/diagrams/basin-model.drawio.svg) is the current source of truth for the generic basin model.
+- [`examples/basic-dashboard.flow.json`](examples/basic-dashboard.flow.json) provides a simple Node-RED Dashboard 2 flow with level, volume, demand, net-flow, and safety-state trends.

examples/01-Basic.json

@@ -0,0 +1,479 @@
+[
+    {
+        "id": "77f00aef1c966167",
+        "type": "tab",
+        "label": "PumpingStation - Basic",
+        "disabled": false,
+        "info": "Tier 1: single pumpingStation node driven by inject nodes only. Demonstrates the canonical Phase-2 topic API: set.mode, set.inflow, set.demand."
+    },
+    {
+        "id": "aa3381b896eb2cfb",
+        "type": "group",
+        "z": "77f00aef1c966167",
+        "name": "Pumping Station (Process Cell)",
+        "style": {
+            "label": true,
+            "stroke": "#000000",
+            "fill": "#0c99d9",
+            "fill-opacity": "0.10"
+        },
+        "nodes": [
+            "8e78b6607deb33a7"
+        ],
+        "x": 534,
+        "y": 351.5,
+        "w": 232,
+        "h": 97
+    },
+    {
+        "id": "4996420d47442fad",
+        "type": "group",
+        "z": "77f00aef1c966167",
+        "name": "1. Control mode",
+        "style": {
+            "stroke": "#666666",
+            "fill": "#ffdf7f",
+            "fill-opacity": "0.15",
+            "label": true,
+            "color": "#333333"
+        },
+        "nodes": [
+            "1155bbbde7c65363",
+            "e9bea0f95b557f5d"
+        ],
+        "x": 94,
+        "y": 119,
+        "w": 272,
+        "h": 122
+    },
+    {
+        "id": "a9f9b38b0e00c1d7",
+        "type": "group",
+        "z": "77f00aef1c966167",
+        "name": "2. Flow signals (inflow / outflow)",
+        "style": {
+            "stroke": "#666666",
+            "fill": "#ffdf7f",
+            "fill-opacity": "0.15",
+            "label": true,
+            "color": "#333333"
+        },
+        "nodes": [
+            "7b2b5eb919b1ab15",
+            "3350187815774b95"
+        ],
+        "x": 94,
+        "y": 279,
+        "w": 262,
+        "h": 122
+    },
+    {
+        "id": "42bf82c87d05f498",
+        "type": "group",
+        "z": "77f00aef1c966167",
+        "name": "3. Operator demand (manual mode only)",
+        "style": {
+            "stroke": "#666666",
+            "fill": "#ffdf7f",
+            "fill-opacity": "0.15",
+            "label": true,
+            "color": "#333333"
+        },
+        "nodes": [
+            "48c2262c345c46b9"
+        ],
+        "x": 94,
+        "y": 479,
+        "w": 261,
+        "h": 82
+    },
+    {
+        "id": "234bdce20170061a",
+        "type": "group",
+        "z": "77f00aef1c966167",
+        "name": "4. Calibration",
+        "style": {
+            "stroke": "#666666",
+            "fill": "#ffdf7f",
+            "fill-opacity": "0.15",
+            "label": true,
+            "color": "#333333"
+        },
+        "nodes": [
+            "463eefdd54df89a5",
+            "2e0642275899fc79"
+        ],
+        "x": 94,
+        "y": 599,
+        "w": 272,
+        "h": 122
+    },
+    {
+        "id": "f4ba4542514ed853",
+        "type": "group",
+        "z": "77f00aef1c966167",
+        "name": "Expected outputs",
+        "style": {
+            "stroke": "#666666",
+            "fill": "#d1d1d1",
+            "fill-opacity": "0.2",
+            "label": true,
+            "color": "#333333"
+        },
+        "nodes": [
+            "b2450e5ee2eebfaa",
+            "386af1ad8aa8ed12",
+            "c27c2655f199b530"
+        ],
+        "x": 874,
+        "y": 299,
+        "w": 252,
+        "h": 202
+    },
+    {
+        "id": "b30af582f935bcb7",
+        "type": "comment",
+        "z": "77f00aef1c966167",
+        "name": "PumpingStation — Basic (Tier 1)",
+        "info": "Single pumpingStation node driven by inject buttons. Shows the canonical msg.topic command surface.\n\nDefault controlMode = levelbased. Switch to manual to honour set.demand.\n\nHOW TO USE\n1. Deploy the flow.\n2. (optional) Click \"set.mode = manual\" if you want set.demand to forward; otherwise leave it on levelbased and the ramp drives demand from level.\n3. Click \"set.inflow = 60 m³/h\" to push wastewater into the basin.\n4. Watch the basin fill on Port 0 (level, volume rise) and Port 1 (InfluxDB-shaped payload).\n5. In manual mode: click \"set.demand = 40\" — the value surfaces as `manualDemand` on Port 0/1 and in the node status badge.\n6. Click \"calibrate volume 25 m³\" or \"calibrate level 1.5 m\" to snap the predicted-volume integrator.\n\nPORTS\n- Port 0: process output (changed fields only)\n- Port 1: InfluxDB-shaped {measurement, fields, tags, timestamp}\n- Port 2: parent registration (child handshake)",
+        "x": 650,
+        "y": 300,
+        "wires": []
+    },
+    {
+        "id": "1155bbbde7c65363",
+        "type": "inject",
+        "z": "77f00aef1c966167",
+        "g": "4996420d47442fad",
+        "name": "set.mode = manual",
+        "props": [
+            {
+                "p": "topic",
+                "vt": "str"
+            },
+            {
+                "p": "payload",
+                "v": "manual",
+                "vt": "str"
+            }
+        ],
+        "repeat": "",
+        "crontab": "",
+        "once": false,
+        "onceDelay": "",
+        "topic": "set.mode",
+        "x": 230,
+        "y": 160,
+        "wires": [
+            [
+                "8e78b6607deb33a7"
+            ]
+        ]
+    },
+    {
+        "id": "e9bea0f95b557f5d",
+        "type": "inject",
+        "z": "77f00aef1c966167",
+        "g": "4996420d47442fad",
+        "name": "set.mode = levelbased",
+        "props": [
+            {
+                "p": "topic",
+                "vt": "str"
+            },
+            {
+                "p": "payload",
+                "v": "levelbased",
+                "vt": "str"
+            }
+        ],
+        "repeat": "",
+        "crontab": "",
+        "once": false,
+        "onceDelay": "",
+        "topic": "set.mode",
+        "x": 240,
+        "y": 200,
+        "wires": [
+            [
+                "8e78b6607deb33a7"
+            ]
+        ]
+    },
+    {
+        "id": "7b2b5eb919b1ab15",
+        "type": "inject",
+        "z": "77f00aef1c966167",
+        "g": "a9f9b38b0e00c1d7",
+        "name": "set.inflow = 60 m3/h",
+        "props": [
+            {
+                "p": "topic",
+                "vt": "str"
+            },
+            {
+                "p": "payload",
+                "v": "60",
+                "vt": "num"
+            }
+        ],
+        "repeat": "",
+        "crontab": "",
+        "once": false,
+        "onceDelay": "",
+        "topic": "set.inflow",
+        "x": 240,
+        "y": 360,
+        "wires": [
+            [
+                "8e78b6607deb33a7"
+            ]
+        ]
+    },
+    {
+        "id": "48c2262c345c46b9",
+        "type": "inject",
+        "z": "77f00aef1c966167",
+        "g": "42bf82c87d05f498",
+        "name": "set.demand = 40 %",
+        "props": [
+            {
+                "p": "topic",
+                "vt": "str"
+            },
+            {
+                "p": "payload",
+                "v": "40",
+                "vt": "num"
+            }
+        ],
+        "repeat": "",
+        "crontab": "",
+        "once": false,
+        "onceDelay": "",
+        "topic": "set.demand",
+        "x": 230,
+        "y": 520,
+        "wires": [
+            [
+                "8e78b6607deb33a7"
+            ]
+        ]
+    },
+    {
+        "id": "463eefdd54df89a5",
+        "type": "inject",
+        "z": "77f00aef1c966167",
+        "g": "234bdce20170061a",
+        "name": "calibrate volume 25 m3",
+        "props": [
+            {
+                "p": "topic",
+                "vt": "str"
+            },
+            {
+                "p": "payload",
+                "v": "25",
+                "vt": "num"
+            }
+        ],
+        "repeat": "",
+        "crontab": "",
+        "once": false,
+        "onceDelay": "",
+        "topic": "cmd.calibrate.volume",
+        "x": 240,
+        "y": 640,
+        "wires": [
+            [
+                "8e78b6607deb33a7"
+            ]
+        ]
+    },
+    {
+        "id": "2e0642275899fc79",
+        "type": "inject",
+        "z": "77f00aef1c966167",
+        "g": "234bdce20170061a",
+        "name": "calibrate level 1.5 m",
+        "props": [
+            {
+                "p": "topic",
+                "vt": "str"
+            },
+            {
+                "p": "payload",
+                "v": "1.5",
+                "vt": "num"
+            }
+        ],
+        "repeat": "",
+        "crontab": "",
+        "once": false,
+        "onceDelay": "",
+        "topic": "cmd.calibrate.level",
+        "x": 240,
+        "y": 680,
+        "wires": [
+            [
+                "8e78b6607deb33a7"
+            ]
+        ]
+    },
+    {
+        "id": "b2450e5ee2eebfaa",
+        "type": "debug",
+        "z": "77f00aef1c966167",
+        "g": "f4ba4542514ed853",
+        "name": "Port 0: Process",
+        "active": true,
+        "tosidebar": true,
+        "console": false,
+        "tostatus": false,
+        "complete": "payload",
+        "targetType": "msg",
+        "x": 980,
+        "y": 340,
+        "wires": []
+    },
+    {
+        "id": "386af1ad8aa8ed12",
+        "type": "debug",
+        "z": "77f00aef1c966167",
+        "g": "f4ba4542514ed853",
+        "name": "Port 1: InfluxDB",
+        "active": true,
+        "tosidebar": true,
+        "console": false,
+        "tostatus": false,
+        "complete": "true",
+        "targetType": "full",
+        "x": 980,
+        "y": 400,
+        "wires": []
+    },
+    {
+        "id": "c27c2655f199b530",
+        "type": "debug",
+        "z": "77f00aef1c966167",
+        "g": "f4ba4542514ed853",
+        "name": "Port 2: Parent reg",
+        "active": true,
+        "tosidebar": true,
+        "console": false,
+        "tostatus": false,
+        "complete": "true",
+        "targetType": "full",
+        "x": 990,
+        "y": 460,
+        "wires": []
+    },
+    {
+        "id": "8e78b6607deb33a7",
+        "type": "pumpingStation",
+        "z": "77f00aef1c966167",
+        "g": "aa3381b896eb2cfb",
+        "name": "",
+        "simulator": false,
+        "basinVolume": 50,
+        "basinHeight": 4,
+        "inflowLevel": 1.5,
+        "outflowLevel": 0.2,
+        "overflowLevel": 3.8,
+        "defaultFluid": "wastewater",
+        "inletPipeDiameter": 0.3,
+        "outletPipeDiameter": 0.3,
+        "pipelineLength": 80,
+        "maxDischargeHead": 24,
+        "staticHead": 12,
+        "maxInflowRate": 200,
+        "temperatureReferenceDegC": 15,
+        "timeleftToFullOrEmptyThresholdSeconds": 0,
+        "enableDryRunProtection": true,
+        "enableHighVolumeSafety": true,
+        "enableOverfillProtection": true,
+        "dryRunThresholdPercent": 2,
+        "highVolumeSafetyThresholdPercent": 98,
+        "overfillThresholdPercent": 98,
+        "minHeightBasedOn": "outlet",
+        "processOutputFormat": "process",
+        "dbaseOutputFormat": "influxdb",
+        "refHeight": "NAP",
+        "basinBottomRef": 1,
+        "uuid": "",
+        "supplier": "",
+        "category": "",
+        "assetType": "",
+        "model": "",
+        "unit": "",
+        "enableLog": false,
+        "logLevel": "error",
+        "positionVsParent": "atEquipment",
+        "positionIcon": "⊥",
+        "hasDistance": false,
+        "distance": "",
+        "controlMode": "levelbased",
+        "levelCurveType": "linear",
+        "logCurveFactor": 9,
+        "enableShiftedRamp": false,
+        "shiftLevel": 0,
+        "shiftArmPercent": 95,
+        "startLevel": 1,
+        "stopLevel": 0.5,
+        "minLevel": 0.20400000000000001,
+        "maxLevel": 3.8,
+        "flowSetpoint": null,
+        "flowDeadband": null,
+        "x": 650,
+        "y": 400,
+        "wires": [
+            [
+                "b2450e5ee2eebfaa"
+            ],
+            [
+                "386af1ad8aa8ed12"
+            ],
+            [
+                "c27c2655f199b530"
+            ]
+        ]
+    },
+    {
+        "id": "3350187815774b95",
+        "type": "inject",
+        "z": "77f00aef1c966167",
+        "g": "a9f9b38b0e00c1d7",
+        "name": "set.outflow= 80 m3/h",
+        "props": [
+            {
+                "p": "topic",
+                "vt": "str"
+            },
+            {
+                "p": "payload"
+            }
+        ],
+        "repeat": "",
+        "crontab": "",
+        "once": false,
+        "onceDelay": "",
+        "topic": "set.outflow",
+        "payload": "80",
+        "payloadType": "num",
+        "x": 230,
+        "y": 320,
+        "wires": [
+            [
+                "8e78b6607deb33a7"
+            ]
+        ]
+    },
+    {
+        "id": "ef77c1819422a098",
+        "type": "global-config",
+        "env": [],
+        "modules": {
+            "EVOLV": "1.0.29"
+        }
+    }
+]

examples/README.md

@@ -0,0 +1,86 @@
+# pumpingStation - Example Flows
+
+Node-RED flows demonstrating the Phase-2 pumpingStation node on the
+canonical topic API (`set.mode`, `set.inflow`, `set.outflow`, `set.demand`,
+`cmd.calibrate.volume`, `cmd.calibrate.level`). Legacy aliases
+(`changemode`, `q_in`, `q_out`, `Qd`, `calibratePredictedVolume`,
+`calibratePredictedLevel`, `registerChild`) still work but log a
+one-time deprecation warning; these fresh flows use the canonical names only.
+
+## Files
+
+| File | Tier | Tabs | Purpose |
+|---|---|---|---|
+| `01-Basic.json` | 1 | Process Plant | Single pumpingStation driven by inject nodes - no parent, no dashboard. |
+| `02-Dashboard.json` | 2 | Process Plant + Dashboard UI | Same command surface as Basic, but driven by FlowFuse Dashboard 2.0 widgets — `ui-button` controls + `ui-text` live status panel. |
+
+## Prerequisites
+
+- Node-RED with the EVOLV package installed (so the `pumpingStation`,
+  `measurement`, `machineGroupControl`, and `rotatingMachine` node
+  types are registered).
+- For `02-Dashboard.json`: `@flowfuse/node-red-dashboard` (Dashboard 2.0).
+
+## How to load
+
+```bash
+# Drop a file into a running Node-RED instance using its Admin API.
+curl -X POST -H 'Content-Type: application/json' \
+  --data @nodes/pumpingStation/examples/01-Basic.json \
+  http://localhost:1880/flows
+```
+
+Or in the editor: **Menu -> Import -> select file -> Import**. The flows
+import into their own tabs and can be deployed immediately.
+
+## 01-Basic - what to try
+
+1. Deploy.
+2. Inject `set.mode = manual`.
+3. Inject `set.inflow = 60 m3/h` - the basin starts filling. Watch the
+   formatted Port 0 payload in the debug sidebar.
+4. Inject `set.demand = 40 %` - in manual mode this would feed any
+   registered children; here there are no pump children so it is logged
+   and shown on Port 0.
+5. Inject `cmd.calibrate.volume = 25 m3` to jump the predicted-volume
+   integrator to half-full.
+
+## 02-Dashboard - what to try
+
+1. Deploy.
+2. Open the dashboard at `http://localhost:1880/dashboard/pumpingstation-basic`.
+3. Click **Mode: Manual** or **Mode: Levelbased** in the Controls panel.
+4. Click **Inflow 60 m³/h** to push wastewater into the basin — the Status
+   panel on the right shows level / volume / volume % rising.
+5. In manual mode, click **Demand 40 m³/h** — the value surfaces as
+   `Manual demand` in the Status panel and in the node's status badge.
+6. Use **Calibrate V = 25 m³** or **Calibrate L = 1.5 m** to snap the
+   predicted-volume integrator.
+
+All buttons fire the same canonical `msg.topic` as the Basic flow's inject
+nodes; the only difference is the trigger. The Live status panel is fed by
+Port 0 via a small fan-out function that caches last-known values so
+delta-only updates never blank a row.
+
+## Layout conventions
+
+These flows follow the EVOLV layout rule set in
+`.claude/rules/node-red-flow-layout.md`:
+
+- Tabs split by **concern**: Process Plant (EVOLV nodes) / Dashboard UI
+  (`ui-*` widgets) / Setup (once-true injects).
+- Cross-tab wiring via **named link out / link in channels**:
+  `setup:to-ps-mode`, `setup:to-ps-inflow`, `setup:to-mgc-mode`,
+  `cmd:ps-mode`, `cmd:ps-demand`, `evt:flow`, `evt:level`,
+  `evt:volpct`, `evt:state`, `evt:perc`, `evt:dir`, `evt:tempty`.
+- **Lane positions** L0-L7 = `[120, 360, 600, 840, 1080, 1320, 1560, 1800]`,
+  driven by each node's S88 level (Process Cell on L5, Unit on L4,
+  Equipment on L3, Control Module on L2).
+- **Group boxes** wrap each parent + its direct children, coloured by the
+  parent's S88 level.
+
+## Regenerating
+
+The current example JSON files are hand-maintained. If you re-introduce a
+generator, regenerate `01-Basic.json` and `02-Dashboard.json` from it
+rather than editing the JSON directly.

package.json

@@ -4,7 +4,10 @@
   "description": "Control module",
   "main": "pumpingStation.js",
   "scripts": {
-    "test": "node pumpingStation.js"
+    "test": "node --test test/",
+    "wiki:contract":  "node ../generalFunctions/scripts/wikiGen.js contract  ./src/commands/index.js   --write ./wiki/Reference-Contracts.md",
+    "wiki:datamodel": "node ../generalFunctions/scripts/wikiGen.js datamodel ./src/specificClass.js     --write ./wiki/Reference-Contracts.md",
+    "wiki:all":       "npm run wiki:contract && npm run wiki:datamodel"
   },
   "repository": {
     "type": "git",

pumpingStation.html

@@ -8,22 +8,50 @@
 | **Control Module**     | `#a9daee`           | zwart      |
 
 -->
-<script src="/pumpingStation/menu.js"></script> <!-- Load the menu script for dynamic dropdowns --> 
-<script src="/pumpingStation/configData.js"></script> <!-- Load the config script for node information --> 
+<script src="/pumpingStation/menu.js"></script> <!-- Load the menu script for dynamic dropdowns -->
+<script src="/pumpingStation/configData.js"></script> <!-- Load the config script for node information -->
+<!-- Editor JS modules — see nodes/pumpingStation/src/editor/. Loaded in
+     dependency order: index.js (namespace + helpers) → diagrams → handlers. -->
+<script src="/pumpingStation/editor/index.js"></script>
+<script src="/pumpingStation/editor/bounds.js"></script>
+<script src="/pumpingStation/editor/basin-diagram.js"></script>
+<script src="/pumpingStation/editor/mode-preview.js"></script>
+<script src="/pumpingStation/editor/hover-couple.js"></script>
+<script src="/pumpingStation/editor/oneditprepare.js"></script>
+<script src="/pumpingStation/editor/oneditsave.js"></script>
 
 <script>//test
   RED.nodes.registerType("pumpingStation", {
     category: "EVOLV",
-    color: "#0c99d9", // color for the node based on the S88 schema
+    color: "#8B4513",
     defaults: {
+      name: { value: "" },
 
        // Define station-specific properties
       simulator:      { value: false },
-      basinVolume:    { value: 1 },   // m³, total empty basin
-      basinHeight:    { value: 1 },   // m, floor to top
-      heightInlet:    { value: 0.8 }, // m, centre of inlet pipe above floor
-      heightOutlet:   { value: 0.2 }, // m, centre of outlet pipe above floor
-      heightOverflow: { value: 0.9 }, // m, overflow elevation
+      basinVolume:    { value: 50 },  // m³, total empty basin
+      basinHeight:    { value: 4 },   // m, floor to top
+      inflowLevel:    { value: 1.5 }, // m, bottom/invert of inlet pipe above floor
+      outflowLevel:   { value: 0.2 }, // m, top of outlet/suction pipe above floor
+      overflowLevel:  { value: 3.8 }, // m, overflow elevation
+      defaultFluid:   { value: "wastewater" },
+      inletPipeDiameter:  { value: 0.3 }, // m
+      outletPipeDiameter: { value: 0.3 }, // m
+      pipelineLength:     { value: 80 },  // m
+      maxDischargeHead:   { value: 24 },  // m
+      staticHead:         { value: 12 },  // m
+      maxInflowRate:      { value: 200 }, // m³/h
+      temperatureReferenceDegC: { value: 15 },
+      timeleftToFullOrEmptyThresholdSeconds:{value:0}, // time threshold to safeguard starting or stopping pumps in seconds
+      enableDryRunProtection: { value: true },
+      enableHighVolumeSafety: { value: true },
+      enableOverfillProtection: { value: true }, // deprecated alias
+      dryRunThresholdPercent: { value: 2 },
+      highVolumeSafetyThresholdPercent: { value: 98 },
+      overfillThresholdPercent: { value: 98 }, // deprecated alias
+      minHeightBasedOn: { value: "outlet" }, // basis for minimum height check: inlet or outlet
+      processOutputFormat: { value: "process" },
+      dbaseOutputFormat: { value: "influxdb" },
 
       // Advanced reference information
       refHeight:      { value: "NAP" }, // reference height
@@ -47,7 +75,23 @@
       hasDistance: { value: false },
       distance: { value: 0 },
       distanceUnit: { value: "m" },
-      distanceDescription: { value: "" }
+      distanceDescription: { value: "" },
+
+      // control strategy
+      controlMode: { value: "levelbased" },
+      levelCurveType: { value: "linear" },
+      logCurveFactor: { value: 9 },
+      enableShiftedRamp: { value: false },
+      shiftLevel: { value: 0 },
+      shiftArmPercent: { value: 95 },
+      startLevel: { value: 1 },     // m, pump-on threshold (engagement edge)
+      stopLevel: { value: 0.5 },    // m, pump-off threshold (hysteresis fall-back)
+      holdLevel: { value: 1 },      // m, ramp 0%-foot; defaults to startLevel (= no hold zone)
+      deadZoneKeepAlivePercent: { value: 1 }, // % emitted across [stopLevel, startLevel] keep-alive band
+      minLevel: { value: 0.3 },     // m, hard-stop (just above outflow pipe top)
+      maxLevel: { value: 3.8 },     // m, 100% demand saturation
+      flowSetpoint: { value: null },
+      flowDeadband: { value: null }
 
     },
 
@@ -61,51 +105,11 @@
       return this.positionIcon + " PumpingStation";
     },
     
-    oneditprepare: function() {
-        const waitForMenuData = () => {
-            if (window.EVOLV?.nodes?.pumpingStation?.initEditor) {
-                window.EVOLV.nodes.pumpingStation.initEditor(this);
-            } else {
-                setTimeout(waitForMenuData, 50);
-            }
-        };
-        // Wait for the menu data to be ready before initializing the editor
-        waitForMenuData();
-      
-        // NODE SPECIFIC
-      document.getElementById("node-input-basinVolume");
-      document.getElementById("node-input-basinHeight");
-      document.getElementById("node-input-heightInlet");
-      document.getElementById("node-input-heightOutlet");
-      document.getElementById("node-input-heightOverflow");
-      document.getElementById("node-input-refHeight");
-      document.getElementById("node-input-basinBottomRef");
-
-      const refHeightEl = document.getElementById("node-input-refHeight");
-      if (refHeightEl) {
-        refHeightEl.value = this.refHeight || "NAP";
-      }
-
-
-        //------------------- END OF CUSTOM config UI ELEMENTS ------------------- //
+    oneditprepare: function () {
+      window.PSEditor.oneditprepare.call(this);
     },
     oneditsave: function () {
-      const node = this;
-
-      //window.EVOLV?.nodes?.pumpingStation?.assetMenu?.saveEditor?.(node);
-      window.EVOLV?.nodes?.pumpingStation?.loggerMenu?.saveEditor?.(node);
-      window.EVOLV?.nodes?.pumpingStation?.positionMenu?.saveEditor?.(node);
-
-      //node specific
-      node.refHeight = document.getElementById("node-input-refHeight").value || "NAP";
-      node.simulator = document.getElementById("node-input-simulator").checked;
-
-      ["basinVolume","basinHeight","heightInlet","heightOutlet","heightOverflow","basinBottomRef"]
-        .forEach(field => {
-          node[field] = parseFloat(document.getElementById(`node-input-${field}`).value) || 0;
-        });
-
-      node.refHeight = document.getElementById("node-input-refHeight").value || "";
+      window.PSEditor.oneditsave.call(this);
     },
 
   });
@@ -115,7 +119,7 @@
 
 <script type="text/html" data-template-name="pumpingStation">
 
-  <!-- Simulator toggle -->
+  <h4>Simulation</h4>
   <div class="form-row">
     <label for="node-input-simulator"><i class="fa fa-play-circle"></i> Simulator</label>
     <input type="checkbox" id="node-input-simulator" style="width:20px;vertical-align:baseline;" />
@@ -123,34 +127,400 @@
   </div>
 
   <hr>
+  
+  <h4>Basin parameters</h4>
+  <p style="font-size:12px;color:#777;margin:0 0 8px 0;">Heights are measured from the basin floor (0 m). Each input on the left controls a line in the diagram on the right — hover an input to highlight its line.</p>
+  <div id="ps-basin-validation" style="display:none;color:#C0392B;font-size:11px;margin:0 0 8px 0;border:1px solid #C0392B;border-radius:3px;padding:6px 8px;background:#FDECEA;"></div>
 
-  <!-- Basin geometry -->
-  <div class="form-row">
-    <label for="node-input-basinVolume"><i class="fa fa-cube"></i> Basin Volume (m³)</label>
-    <input type="number" id="node-input-basinVolume" min="0" step="0.1" />
-  </div>
-  <div class="form-row">
-    <label for="node-input-basinHeight"><i class="fa fa-arrows-v"></i> Basin Height (m)</label>
-    <input type="number" id="node-input-basinHeight" min="0" step="0.1" />
+  <style>
+    /* Two-column layout: stacked colour-coded inputs on the left,
+       SVG on the right. Hover an input row → its paired SVG line
+       (referenced by data-couples-line) gets a thicker stroke. */
+    .ps-diag { display:flex; gap:28px; align-items:flex-start; margin:0 0 14px 0; }
+    .ps-diag-side { width: 220px; flex: 0 0 220px; display:flex; flex-direction:column; gap:6px; }
+    .ps-diag-side .ps-row {
+      display:grid; grid-template-columns: minmax(0,1fr) 70px 16px; align-items:center;
+      gap:6px; padding:4px 6px 4px 10px; border-left:4px solid #ccc;
+      background:#fafafa; border-radius:3px; font-size:11px; cursor:pointer;
+      min-width:0;
+    }
+    .ps-diag-side .ps-row:hover { background:#f0f0f0; }
+    .ps-diag-side .ps-row.ps-readonly { background:#fff; cursor:default; opacity:0.85; }
+    .ps-diag-side .ps-row label { font-weight:600; margin:0; line-height:1.2; }
+    .ps-diag-side .ps-row .ps-sub { grid-column:1; font-size:10px; color:#888; font-weight:400; }
+    .ps-diag-side .ps-row input[type=number] {
+      width:100%; height:22px; box-sizing:border-box; font-size:11px;
+      padding:1px 4px; margin:0; border:1px solid #ccc; border-radius:3px;
+      background:#fff;
+    }
+    .ps-diag-side .ps-row input[type=number]:focus { outline:1px solid #0c99d9; border-color:#0c99d9; }
+    .ps-diag-side .ps-row .ps-readonly-val {
+      font-family:monospace; font-size:11px; color:#666; text-align:right;
+      padding-right:4px;
+    }
+    .ps-diag-side .ps-row .ps-unit { color:#888; font-size:10px; }
+    .ps-diag-svg { flex:1; min-width:0; }
+    /* Border colours matched to each SVG line stroke. */
+    .ps-row[data-stroke="#333"]    { border-left-color:#333; }
+    .ps-row[data-stroke="#C0392B"] { border-left-color:#C0392B; }
+    .ps-row[data-stroke="#1E8449"] { border-left-color:#1E8449; }
+    .ps-row[data-stroke="#1F4E79"] { border-left-color:#1F4E79; }
+    .ps-row[data-stroke="#D68910"] { border-left-color:#D68910; }
+    .ps-row[data-stroke="#888"]    { border-left-color:#888; }
+    .ps-row[data-stroke="#333"]    label { color:#333; }
+    .ps-row[data-stroke="#C0392B"] label { color:#C0392B; }
+    .ps-row[data-stroke="#1E8449"] label { color:#1E8449; }
+    .ps-row[data-stroke="#1F4E79"] label { color:#1F4E79; }
+    .ps-row[data-stroke="#D68910"] label { color:#D68910; }
+    .ps-row[data-stroke="#888"]    label { color:#888; }
+    /* Highlight class applied to the SVG line during input row hover. */
+    .ps-line-highlight { stroke-width:3.5 !important; opacity:1 !important; }
+  </style>
+
+  <!--
+    ============================================================
+    BASIN DIAGRAM (ps-basin-diagram)
+    ============================================================
+    Coordinate system: SVG viewBox is 520 (wide) × 430 (tall).
+    Origin (0,0) is top-left.  +x goes right.  +y goes DOWN.
+    Bigger y = lower on screen.
+
+    X-LANES (all viewBox units, edit any of these to shift a column):
+      x ≈   5..75   left input column (inlet number input)
+      x =  80       inlet unit "m"
+      x = 135       inlet text labels (right-aligned, anchor at x)
+      x = 140..200  inlet arrow (line + arrow head into tank)
+      x = 200..320  tank body (rect.x=200 width=120) — interior 201..319
+      x = 195/325   threshold tick lines (extend 5 px outside tank)
+      x = 260       mid-tank zone labels (centered)
+      x = 320..360  outlet arrow
+      x = 330       right-side label column ("overflowLevel", "Outlet", …)
+      x = 365       outlet sub-text column
+      x = 425..495  right input column (foreignObject inputs, width=70)
+      x = 500       right unit column ("m", "m³")
+
+    Y-COORDINATES:
+      y =  40       tank rim (basinHeight line)
+      y = 380       tank floor / datum
+      y = 410       ordering warning ribbon
+      y =  19,44    "basin volume" / "basinHeight" labels (static)
+      Threshold rows (overflowLevel, highVolumeSafetyLevel, inflowLevelGuide,
+        dryRunLevel, outflowLevel, basinHeight tick) get y assigned
+        DYNAMICALLY by the redraw() function around line 250-340 below.
+        Their input row may be NUDGED off ideal-y to avoid overlap; a leader
+        line (ps-leader-*) is then drawn between threshold y and input y.
+      Zone-label rows (ps-zone-*) get y assigned dynamically to the midpoint
+        between adjacent thresholds; they hide if the gap is too small.
+
+    HOW TO NUDGE OVERLAPPING LABELS:
+      - For STATIC y values (hardcoded below): edit the inline y attribute.
+      - For DYNAMIC y values: search redraw() for the element id and adjust
+        the layout math (e.g. NUDGE_PX or the threshold-stack ordering).
+      - For x: every label column above can be shifted by editing the inline
+        x attribute on the relevant <text>/<line>/<foreignObject>.
+
+    Note: dynamic line/label positioning lives in oneditprepare → redraw()
+    further up in this file. Changing only the inline y here will be
+    overridden on first redraw for any element whose id appears in redraw().
+    ============================================================
+  -->
+  <div class="ps-diag" id="ps-basin-wrap">
+    <!-- LEFT: stacked colour-coded inputs. Hover a row → its paired SVG
+         line (data-couples-line) is highlighted in the diagram. -->
+    <div class="ps-diag-side">
+      <div class="ps-row" data-stroke="#333" style="cursor:default;">
+        <div><label>basinVolume</label><div class="ps-sub">total empty volume (no marker)</div></div>
+        <input type="number" id="node-input-basinVolume" min="0" step="0.1" />
+        <span class="ps-unit">m³</span>
+      </div>
+      <div class="ps-row" data-stroke="#333"    data-couples-line="ps-line-basinHeight">
+        <div><label>basinHeight</label><div class="ps-sub">floor → rim</div></div>
+        <input type="number" id="node-input-basinHeight" min="0" step="0.1" />
+        <span class="ps-unit">m</span>
+      </div>
+      <div class="ps-row" data-stroke="#C0392B" data-couples-line="ps-line-overflowLevel">
+        <div><label>overflowLevel</label><div class="ps-sub">spill height</div></div>
+        <input type="number" id="node-input-overflowLevel" min="0" step="0.01" />
+        <span class="ps-unit">m</span>
+      </div>
+      <div class="ps-row ps-readonly" data-stroke="#D68910" data-couples-line="ps-line-highVolumeSafetyLevel">
+        <div><label>highVolumeSafety</label><div class="ps-sub">derived (overflow × %)</div></div>
+        <span id="derived-highVolumeSafetyLevel" class="ps-readonly-val">— m</span>
+        <span class="ps-unit">m</span>
+      </div>
+      <div class="ps-row" data-stroke="#1F4E79" data-couples-line="ps-line-inflowLevel">
+        <div><label>inflowLevel</label><div class="ps-sub">bottom of inlet pipe</div></div>
+        <input type="number" id="node-input-inflowLevel" min="0" step="0.01" />
+        <span class="ps-unit">m</span>
+      </div>
+      <div class="ps-row ps-readonly" data-stroke="#C0392B" data-couples-line="ps-line-dryRunLevel">
+        <div><label>dryRunLevel</label><div class="ps-sub">derived (outflow × dry%)</div></div>
+        <span id="derived-dryRunLevel" class="ps-readonly-val">— m</span>
+        <span class="ps-unit">m</span>
+      </div>
+      <div class="ps-row" data-stroke="#1F4E79" data-couples-line="ps-line-outflowLevel">
+        <div><label>outflowLevel</label><div class="ps-sub">top of outlet pipe</div></div>
+        <input type="number" id="node-input-outflowLevel" min="0" step="0.01" />
+        <span class="ps-unit">m</span>
+      </div>
+      <div class="ps-row ps-readonly" data-stroke="#888" style="cursor:default;">
+        <div><label>basinBottomRef</label><div class="ps-sub">floor above NAP (no marker)</div></div>
+        <input type="number" id="node-input-basinBottomRef" step="0.01" />
+        <span class="ps-unit">m</span>
+      </div>
+    </div>
+    <!-- RIGHT: SVG. The viewBox is now narrower (320 wide) since the right
+         input column is gone — labels render inside the tank's right margin. -->
+    <svg id="ps-basin-diagram" class="ps-diag-svg" xmlns="http://www.w3.org/2000/svg" viewBox="0 0 360 430"
+         style="display:block;width:100%;max-width:360px;background:#fff;border:1px solid #e5e5e5;border-radius:4px;"
+         font-family="Arial,sans-serif" font-size="11">
+      <defs>
+        <marker id="ps-arrow" viewBox="0 0 10 10" refX="9" refY="5" markerWidth="7" markerHeight="7" orient="auto-start-reverse">
+          <path d="M 0 0 L 10 5 L 0 10 z" fill="#1F4E79" />
+        </marker>
+      </defs>
+      <!-- Tank body — shifted right (x=145, width=110) to give the inlet
+           sub-label "bottom of pipe" room on the left without clipping.
+           Threshold tick lines extend 5 px outside the tank walls. -->
+      <rect x="145" y="40" width="110" height="340" fill="#F0F8FF" stroke="#333" stroke-width="1.5" />
+      <rect id="ps-deadvol" x="146" width="108" fill="#AACCE0" />
+
+      <!-- Mid-tank zone labels — centred at x=200 (tank centre). -->
+      <text id="ps-zone-spare"   x="200" text-anchor="middle" fill="#B78200" font-size="10" font-style="italic" visibility="hidden">Spare</text>
+      <text id="ps-zone-sewage"  x="200" text-anchor="middle" fill="#1F4E79" font-size="10" font-style="italic" visibility="hidden">Sewage + buffer</text>
+      <text id="ps-zone-buffer1" x="200" text-anchor="middle" fill="#1F4E79" font-size="10" font-style="italic" visibility="hidden">Buffer</text>
+      <text id="ps-zone-buffer2" x="200" text-anchor="middle" fill="#1F4E79" font-size="10" font-style="italic" visibility="hidden">Buffer</text>
+      <text id="ps-zone-dead"    x="200" text-anchor="middle" fill="#444" font-size="10" font-style="italic" visibility="hidden">Dead vol</text>
+
+      <!-- basinHeight tick at tank rim (y=40, static). -->
+      <line id="ps-line-basinHeight" x1="140" y1="40" x2="260" y2="40" stroke="#333" stroke-width="1.5" />
+      <text id="ps-label-basinHeight" x="265" y="44" fill="#333">basinHeight</text>
+
+      <line id="ps-line-overflowLevel" x1="140" x2="260" stroke="#C0392B" stroke-dasharray="4 2" stroke-width="1.5" />
+      <text id="ps-label-overflowLevel" x="265" fill="#C0392B">overflowLevel</text>
+
+      <line id="ps-line-highVolumeSafetyLevel" x1="140" x2="260" stroke="#D68910" stroke-dasharray="1 2" stroke-width="1" opacity="0.7" />
+      <text id="ps-label-highVolumeSafetyLevel" x="265" fill="#D68910" font-size="10" font-style="italic">highVolSafety</text>
+
+      <line id="ps-line-inflowLevelGuide" x1="145" x2="255" stroke="#1F4E79" stroke-dasharray="2 3" stroke-width="1" opacity="0.55" />
+      <text id="ps-label-inflowLevelGuide" x="265" fill="#1F4E79" font-size="10" font-style="italic">inlet invert</text>
+
+      <line id="ps-line-inflowLevel" x1="85" x2="145" stroke="#1F4E79" stroke-width="2" marker-end="url(#ps-arrow)" />
+      <text id="ps-label-inflowLevel" x="80" text-anchor="end" fill="#1F4E79" font-weight="bold">Inlet</text>
+      <text id="ps-sub-inflowLevel" x="80" text-anchor="end" fill="#777" font-size="9">bottom of pipe</text>
+
+      <line id="ps-line-dryRunLevel" x1="140" x2="260" stroke="#C0392B" stroke-dasharray="1 2" stroke-width="1" opacity="0.6" />
+      <text id="ps-label-dryRunLevel" x="265" fill="#C0392B" font-size="10" font-style="italic">dryRunLevel</text>
+
+      <line id="ps-line-outflowLevel" x1="255" x2="295" stroke="#1F4E79" stroke-width="2" marker-end="url(#ps-arrow)" />
+      <text id="ps-label-outflowLevel" x="300" fill="#1F4E79" font-weight="bold">Outlet</text>
+      <text id="ps-sub-outflowLevel" x="300" fill="#777" font-size="9">top of pipe</text>
+
+      <!-- Floor / datum — datum label sits BELOW the tank (y=395) so it
+           never collides with the Outlet / top-of-pipe sub-label when
+           outflowLevel is near the floor. -->
+      <line x1="140" y1="380" x2="260" y2="380" stroke="#000" stroke-width="2" />
+      <text x="200" y="395" text-anchor="middle" fill="#000" font-size="10">0 m (datum)</text>
+
+      <!-- Ordering-warning ribbon -->
+      <text id="ps-warning" x="200" y="410" text-anchor="middle" fill="#C0392B" font-size="10" font-style="italic" visibility="hidden"></text>
+    </svg>
   </div>
 
-  <!-- Inlet/Outlet elevations -->
+
+  <hr>
+
+  <h4>Control Strategy</h4>
   <div class="form-row">
-    <label for="node-input-heightInlet"><i class="fa fa-long-arrow-up"></i> Inlet Elevation (m)</label>
-    <input type="number" id="node-input-heightInlet" min="0" step="0.01" />
+    <label for="node-input-controlMode"><i class="fa fa-sliders"></i> Control mode</label>
+    <select id="node-input-controlMode">
+      <option value="levelbased">Level-based</option>
+      <option value="manual">Manual</option>
+    </select>
   </div>
-  <div class="form-row">
-    <label for="node-input-heightOutlet"><i class="fa fa-long-arrow-down"></i> Outlet Elevation (m)</label>
-    <input type="number" id="node-input-heightOutlet" min="0" step="0.01" />
+
+  <div id="ps-mode-levelbased" class="ps-mode-section">
+    <div class="form-row">
+      <label for="node-input-levelCurveType">Curve</label>
+      <select id="node-input-levelCurveType" style="width:60%;">
+        <option value="linear">Linear</option>
+        <option value="log">Log - fast early response</option>
+      </select>
+    </div>
+    <div class="form-row" id="ps-log-factor-row" style="display:none;">
+      <label for="node-input-logCurveFactor">Log shape factor</label>
+      <input type="number" id="node-input-logCurveFactor" min="0.001" step="0.1" style="width:100px;" />
+    </div>
+    <div class="form-row">
+      <label for="node-input-enableShiftedRamp" style="width:auto;">
+        <input type="checkbox" id="node-input-enableShiftedRamp" style="width:auto;vertical-align:middle;margin-right:6px;" />
+        Enable shifted ramp (hysteresis)
+      </label>
+    </div>
+    <div id="ps-mode-validation" style="display:none;color:#C0392B;font-size:11px;margin:4px 0 8px 0;border:1px solid #C0392B;border-radius:3px;padding:6px 8px;background:#FDECEA;"></div>
+    <!--
+      ============================================================
+      LEVEL-BASED MODE PREVIEW (ps-levelbased-mode-diagram)
+      ============================================================
+      Coordinate system: SVG viewBox is 430 (wide) × 185 (tall).
+      Origin (0,0) top-left.  +x right.  +y DOWN (so y=24 is HIGH on screen,
+      y=158 is at the baseline).
+
+      X-AXIS (level, in viewBox px) — controlled by redrawModeDiagram() in
+        the oneditprepare script above.  The function maps the user's
+        startLevel/inflowLevel/maxLevel/shiftLevel onto the px window
+        x0=52 (left axis) → x1=390 (right end of plot).
+        DO NOT hardcode x for ps-mode-line-* / ps-mode-label-*; they're
+        rewritten on every input change.
+
+      Y-AXIS (process demand %):
+        y=24    100%   (top of plot)
+        y=140   0%     (baseline / x-axis)
+        y=160   OFF baseline (pink dashed)
+        y=180   axis labels under the plot ("dry run","start","inlet","max","overflow","shift")
+        y=205   legend captions (one row, BELOW axis labels — moved here to stop
+                colliding with the title row at y=14)
+        y=14    curve-type title only ("linear curve" / "log curve"), centered.
+
+      WHAT IS STATIC vs DYNAMIC:
+        STATIC (edit inline below): viewBox bounds, axis lines, "0%"/"100%"
+          tick labels, in-plot caption x/y, axis-label y=176.
+        DYNAMIC (edit in JS): every ps-mode-line-*, ps-mode-label-* x;
+          ps-mode-curve-up/down points; visibility of shift elements.
+
+      HOW TO NUDGE OVERLAPPING TEXT:
+        - Move the curve-type caption: edit the x="220" y="18" on
+          #ps-mode-curve-label.
+        - Move axis labels (start/inlet/max/shift) UP or DOWN: edit y="176".
+          (To move them left/right relative to the line, edit redrawModeDiagram
+          in the script — the x is set there.)
+        - Move the legend captions: edit x="280" y="54" / y="72" on
+          #ps-mode-curve-up-label / #ps-mode-curve-down-label.
+        - To resize the plot box, change viewBox + the x0/x1/y0/y1 constants
+          in redrawModeDiagram() to match.
+      ============================================================
+    -->
+    <div class="ps-diag" id="ps-mode-wrap">
+    <!-- LEFT side-panel: only the level-based mode's editable inputs +
+         read-only displays for derived/related levels (so user has all
+         level context in one column). Hover-coupled to the SVG markers. -->
+    <div class="ps-diag-side">
+      <div class="ps-row ps-readonly" data-stroke="#C0392B" data-couples-line="ps-mode-line-dryRunLevel">
+        <div><label>dryRunLevel</label><div class="ps-sub">derived</div></div>
+        <span id="ps-mode-readout-dryRun" class="ps-readonly-val">— m</span>
+        <span class="ps-unit">m</span>
+      </div>
+      <div class="ps-row" data-stroke="#1E8449" data-couples-line="ps-mode-line-startLevel">
+        <div><label>startLevel</label><div class="ps-sub">pump-on threshold</div></div>
+        <input type="number" id="node-input-startLevel" min="0" step="0.01" />
+        <span class="ps-unit">m</span>
+      </div>
+      <div class="ps-row" data-stroke="#7D3C98" data-couples-line="ps-mode-line-stopLevel">
+        <div><label>stopLevel</label><div class="ps-sub">pump-off threshold (optional, ≤ startLevel)</div></div>
+        <input type="number" id="node-input-stopLevel" min="0" step="0.01" />
+        <span class="ps-unit">m</span>
+      </div>
+      <div class="ps-row" data-stroke="#27AE60" data-couples-line="ps-mode-line-holdLevel">
+        <div><label>holdLevel</label><div class="ps-sub">0 % ramp foot — leave at startLevel for no hold band</div></div>
+        <input type="number" id="node-input-holdLevel" min="0" step="0.01" />
+        <span class="ps-unit">m</span>
+      </div>
+      <div class="ps-row ps-readonly" data-stroke="#1F4E79" data-couples-line="ps-mode-line-inflowLevel">
+        <div><label>inflowLevel</label><div class="ps-sub">from basin above</div></div>
+        <span id="ps-mode-readout-inflow" class="ps-readonly-val">— m</span>
+        <span class="ps-unit">m</span>
+      </div>
+      <div class="ps-row" data-stroke="#D68910" data-couples-line="ps-mode-line-maxLevel">
+        <div><label>maxLevel</label><div class="ps-sub">100% saturation</div></div>
+        <input type="number" id="node-input-maxLevel" min="0" step="0.01" />
+        <span class="ps-unit">m</span>
+      </div>
+      <div class="ps-row" id="ps-shiftLevel-row" data-stroke="#D68910" data-couples-line="ps-mode-line-shiftLevel" style="display:none;">
+        <div><label>shiftLevel</label><div class="ps-sub">held output drops here</div></div>
+        <input type="number" id="node-input-shiftLevel" min="0" step="0.01" />
+        <span class="ps-unit">m</span>
+      </div>
+      <div class="ps-row" id="ps-shiftArmPercent-row" data-stroke="#D68910" data-couples-line="ps-mode-line-armPercent" style="display:none;">
+        <div><label>shiftArmPercent</label><div class="ps-sub">arms when output % crosses this</div></div>
+        <input type="number" id="node-input-shiftArmPercent" min="0" max="100" step="1" />
+        <span class="ps-unit">%</span>
+      </div>
+      <div class="ps-row ps-readonly" data-stroke="#C0392B" data-couples-line="ps-mode-line-overflowLevel">
+        <div><label>overflowLevel</label><div class="ps-sub">from basin above</div></div>
+        <span id="ps-mode-readout-overflow" class="ps-readonly-val">— m</span>
+        <span class="ps-unit">m</span>
+      </div>
+    </div>
+    <svg id="ps-levelbased-mode-diagram" class="ps-diag-svg" xmlns="http://www.w3.org/2000/svg" viewBox="0 0 430 215"
+         style="display:block;width:100%;max-width:540px;background:#fff;border:1px solid #e5e5e5;border-radius:4px;"
+         font-family="Arial,sans-serif" font-size="11">
+      <!-- ZONE BANDS — drawn FIRST so they sit behind axes and curves.
+           x is set DYNAMICALLY by redrawModeDiagram(); y/height span the full plot (24..160).
+           Order from leftmost to rightmost: dryRun (red) | safetyLow (orange) | safe (green) |
+           safetyHigh (orange) | overflow (red).
+           -->
+      <rect id="ps-zone-dryRun"      y="24" height="136" fill="#fdecea" />
+      <rect id="ps-zone-safetyLow"   y="24" height="136" fill="#fef5e7" />
+      <rect id="ps-zone-safe"        y="24" height="136" fill="#eafaf1" />
+      <rect id="ps-zone-safetyHigh"  y="24" height="136" fill="#fef5e7" />
+      <rect id="ps-zone-overflow"    y="24" height="136" fill="#fdecea" />
+      <!-- X-axis (0% baseline) at y=140; y axis at x=52 (top y=24). Plot range: y=24..140. -->
+      <line x1="52" y1="140" x2="402" y2="140" stroke="#333" />
+      <line x1="52" y1="140" x2="52" y2="24" stroke="#333" />
+      <!-- OFF tier baseline at y=160 (20px below 0% baseline). pink line drawn dynamically by curve. -->
+      <line x1="52" y1="160" x2="402" y2="160" stroke="#E08080" stroke-dasharray="2 3" />
+      <!-- Y-axis tick labels (x=4, right-aligned via text-anchor="end" at x=50 for tighter alignment). -->
+      <text x="50" y="27"  text-anchor="end" fill="#333">100%</text>
+      <text x="50" y="143" text-anchor="end" fill="#333">0%</text>
+      <text x="50" y="163" text-anchor="end" fill="#E08080">OFF</text>
+      <!-- Plot title above 100% line. -->
+      <text id="ps-mode-curve-label" x="220" y="14" text-anchor="middle" fill="#555">linear curve</text>
+      <!-- Curves drawn dynamically. Up curve foot=inlet→top=max. Down curve foot=start→top=shiftLevel (visible when shift enabled). -->
+      <polyline id="ps-mode-curve-up" fill="none" stroke="#1E8449" stroke-width="2.5" points="" />
+      <polyline id="ps-mode-curve-down" fill="none" stroke="#D68910" stroke-width="2" stroke-dasharray="5 3" points="" style="display:none;" />
+      <!-- Vertical level-marker lines — span y=24..140 (top to baseline only, NOT into OFF tier). x set dynamically. -->
+      <line id="ps-mode-line-dryRunLevel"  y1="24" y2="140" stroke="#C0392B" stroke-dasharray="2 2" />
+      <line id="ps-mode-line-startLevel" y1="24" y2="140" stroke="#1E8449" stroke-dasharray="2 2" />
+      <line id="ps-mode-line-stopLevel" y1="24" y2="140" stroke="#7D3C98" stroke-dasharray="2 2" />
+      <line id="ps-mode-line-holdLevel" y1="24" y2="140" stroke="#27AE60" stroke-dasharray="2 2" />
+      <line id="ps-mode-line-inflowLevel" y1="24" y2="140" stroke="#1F4E79" stroke-dasharray="2 2" />
+      <line id="ps-mode-line-maxLevel" y1="24" y2="140" stroke="#D68910" stroke-dasharray="2 2" />
+      <line id="ps-mode-line-overflowLevel" y1="24" y2="140" stroke="#C0392B" stroke-dasharray="2 2" />
+      <line id="ps-mode-line-shiftLevel" y1="24" y2="140" stroke="#D68910" stroke-dasharray="2 2" style="display:none;" />
+      <!-- Horizontal arming-% line — y is set DYNAMICALLY by the JS to the
+           shiftArmPercent value (in plot-y space). Spans full plot width. -->
+      <line id="ps-mode-line-armPercent" x1="52" x2="392" stroke="#D68910" stroke-dasharray="4 3" stroke-width="1" opacity="0.7" style="display:none;" />
+      <text id="ps-mode-label-armPercent" x="394" text-anchor="start" fill="#D68910" font-size="9" style="display:none;">arm%</text>
+      <!-- Axis labels under the plot were removed — they crowded each other
+           when levels were close. Identification comes from the line colour
+           (matched to the side-panel input row) and hover-coupling. -->
+      <!-- Empty <text> stubs kept for the redraw loop's getElementById calls
+           (cheaper than guarding each one). They're hidden via display:none. -->
+      <text id="ps-mode-label-dryRunLevel"   style="display:none;"></text>
+      <text id="ps-mode-label-startLevel"    style="display:none;"></text>
+      <text id="ps-mode-label-stopLevel"     style="display:none;"></text>
+      <text id="ps-mode-label-inflowLevel"   style="display:none;"></text>
+      <text id="ps-mode-label-maxLevel"      style="display:none;"></text>
+      <text id="ps-mode-label-overflowLevel" style="display:none;"></text>
+      <text id="ps-mode-label-shiftLevel"    style="display:none;"></text>
+      <!-- Legend captions — placed BELOW the axis labels (y=200) on their own row,
+           so they never collide with the title (y=14). Up-caption left-aligned at
+           x=60; down-caption to its right at x=210. Both font-size 10. -->
+      <text id="ps-mode-curve-up-label" x="60" y="205" fill="#1E8449" font-size="10">— ramp inlet→max</text>
+      <text id="ps-mode-curve-down-label" x="210" y="205" fill="#D68910" font-size="10" style="display:none;">— shifted (held @100% then ramp shift→start)</text>
+    </svg>
+    </div>
   </div>
-  <div class="form-row">
-    <label for="node-input-heightOverflow"><i class="fa fa-tint"></i> Overflow Level (m)</label>
-    <input type="number" id="node-input-heightOverflow" min="0" step="0.01" />
+
+  <div id="ps-mode-manual" class="ps-mode-section" style="display:none">
+    <p style="font-size:12px;color:#777;margin:0;">Manual mode accepts external <code>Qd</code> demand commands and does not compute demand from basin level.</p>
   </div>
 
   <hr>
 
-  <!-- Reference data -->
+  <h4>Reference</h4>
+
+  <!-- Reference data — basinBottomRef moved into basin side-panel above. -->
   <div class="form-row">
     <label for="node-input-refHeight"><i class="fa fa-map-marker"></i> Reference height</label>
     <select id="node-input-refHeight" style="width:60%;">
@@ -158,9 +528,55 @@
     </select>
   </div>
 
+  <hr>
+
+  <h4>Safety</h4>
+
+  <!-- Safety settings -->
   <div class="form-row">
-    <label for="node-input-basinBottomRef"><i class="fa fa-level-down"></i> Basin Bottom (m Refheight)</label>
-    <input type="number" id="node-input-basinBottomRef" step="0.01" />
+    <label for="node-input-enableDryRunProtection">
+      <i class="fa fa-shield"></i> Dry-run Protection
+    </label>
+    <input type="checkbox" id="node-input-enableDryRunProtection" style="width:20px;vertical-align:baseline;" />
+    <span>Prevent pumps from running on low volume</span>
+  </div>
+  <div class="form-row">
+    <label for="node-input-dryRunThresholdPercent" style="padding-left:20px;">Low Volume Threshold (%)</label>
+    <input type="number" id="node-input-dryRunThresholdPercent" min="0" max="100" step="0.1" style="width:80px;" />
+    <span id="derived-dryRunLevel" style="margin-left:8px;color:#777;font-size:12px;">→ dryRunLevel ≈ — m</span>
+  </div>
+
+  <div class="form-row">
+    <label for="node-input-enableHighVolumeSafety">
+      <i class="fa fa-exclamation-triangle"></i> High-volume Safety
+    </label>
+    <input type="checkbox" id="node-input-enableHighVolumeSafety" style="width:20px;vertical-align:baseline;" />
+    <span>Act before physical overflow</span>
+  </div>
+  <div class="form-row">
+    <label for="node-input-highVolumeSafetyThresholdPercent" style="padding-left:20px;">High-volume Safety (%)</label>
+    <input type="number" id="node-input-highVolumeSafetyThresholdPercent" min="0" max="100" step="0.1" style="width:80px;" />
+    <span id="derived-highVolumeSafetyLevel" style="margin-left:8px;color:#777;font-size:12px;">→ highVolumeSafetyLevel ≈ — m</span>
+  </div>
+  <hr>
+
+  <h3>Output Formats</h3>
+  <div class="form-row">
+    <label for="node-input-processOutputFormat"><i class="fa fa-random"></i> Process Output</label>
+    <select id="node-input-processOutputFormat" style="width:60%;">
+      <option value="process">process</option>
+      <option value="json">json</option>
+      <option value="csv">csv</option>
+    </select>
+  </div>
+  <div class="form-row">
+    <label for="node-input-dbaseOutputFormat"><i class="fa fa-database"></i> Database Output</label>
+    <select id="node-input-dbaseOutputFormat" style="width:60%;">
+      <option value="influxdb">influxdb</option>
+      <option value="frost">frost</option>
+      <option value="json">json</option>
+      <option value="csv">csv</option>
+    </select>
   </div>
 
   <!-- Shared asset/logger/position menus -->

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');
+    });
+  });
+
 };

simulations/README.md

@@ -0,0 +1,124 @@
+# Evaluation harness
+
+Scenario-based evaluation for pumpingStation. Each scenario scripts a stream of inputs against a configured station, ticks the simulator at 1 s resolution, records every state, and prints a summary + event log + expectation check. Separate from unit tests (`test/`) — those verify individual pieces of logic in isolation; scenarios check end-to-end behaviour over time with realistic input trajectories.
+
+## Run
+
+```bash
+# One scenario
+node simulations/run.js levelbased-steady
+
+# All scenarios at once
+node simulations/run.js --all
+```
+
+Per-tick records are written to `simulations/logs/<scenario>.jsonl` for post-hoc analysis (e.g. streaming into InfluxDB for Grafana, or pandas / jq for one-off exploration).
+
+## Scenario file shape
+
+```js
+// simulations/scenarios/<name>.js
+module.exports = {
+  name: 'scenario-identifier',
+  description: 'one sentence — what the scenario is testing',
+  durationSec: 1200,
+
+  config: { /* PumpingStation config, same shape as nodeClass builds */ },
+
+  setup: async (ps) => {
+    // Optional. Wire fake MGCs, calibrate initial level, etc.
+  },
+
+  inputs: (t, ps) => {
+    // Called every tick (t in seconds). Drive inflow, mode changes,
+    // operator actions, etc.
+    ps.setManualInflow(0.005, Date.now(), 'm3/s');
+  },
+
+  expectations: [
+    { name: 'no safety trips', type: 'safety_trips_eq', value: 0 },
+    { name: 'level stays below overflow', type: 'max_level_bounded', value: 4.5 },
+  ],
+};
+```
+
+## Supported expectation types
+
+| Type | Semantics |
+|---|---|
+| `max_level_bounded` | max level across the run must be `≤ value` |
+| `min_level_bounded` | min level across the run must be `≥ value` |
+| `max_demand_bounded` | max percControl must be `≤ value` |
+| `max_demand_gt` | max percControl must be `> value` |
+| `safety_trips_eq` | total ticks with `safetyActive` must equal `value` |
+| `safety_trips_gt` | total ticks with `safetyActive` must be `> value` |
+| `end_state_eq` | final record's `field` must equal `value` |
+| `threshold_issues_eq` | startup guardrail issue count must equal `value` |
+
+Add new expectation types in `run.js` (`evalExpectation`).
+
+## Output
+
+Example run:
+
+```
+═══ Scenario: levelbased-steady ═══
+Constant sewer inflow below pump capacity; level converges inside the RAMP zone with demand matching inflow.
+Duration: 1200s, 1s ticks
+
+─── Samples (every 10%) ───
+  t(s)    level(m)   vol(m3)    dir         netFlow(m3/s)   src             demand    safe
+  ────────────────────────────────────────────────────────────────────────────────────────
+       0       2.00     20.00  steady       0               —                 0%       ·
+     120       2.64     26.40  draining    -0.0026          predicted        62%       ·
+     240       2.30     23.00  draining    -0.0004          predicted        68%       ·
+     ...
+
+─── Events (3) ───
+  t=  15s  direction  steady → filling
+  t= 134s  direction  filling → draining
+
+─── Metrics ───
+  level       min=2.00  max=2.73  end=2.33 m
+  percControl min=0%    max=73%   end=66%
+  safety      trips=0 ticks
+  threshold   issues=0 at startup
+
+─── Expectations ───
+  ✓ no safety trips: 0 ticks with safetyActive (expected 0)
+  ✓ level stays below overflow: max level = 2.73 m (bound: ≤ 4.5)
+  ✓ level stays above outflow: min level = 2.00 m (bound: ≥ 0.2)
+  ✓ no threshold issues on init: 0 threshold issues at startup (expected 0)
+
+Log: simulations/logs/levelbased-steady.jsonl (1200 records)
+✅ PASS
+```
+
+## Why separate from `test/`?
+
+| | `test/` | `simulations/` |
+|---|---|---|
+| runner | `node --test` | `node simulations/run.js` |
+| scope | one function / small behaviour | end-to-end scenario over time |
+| duration | milliseconds | seconds to minutes (simulated) |
+| assertion style | tight, exact (`assert.equal`) | tolerance / bounds / event counts |
+| output | TAP | summary table + JSONL for analysis |
+| purpose | catch regressions | analyse how the system responds to input |
+
+Unit tests live under `test/basic/`, `test/integration/`, `test/edge/`. Scenarios live here under `simulations/scenarios/`.
+
+## Sending logs to Grafana (optional)
+
+The JSONL output has one record per tick. To stream into InfluxDB for Grafana viewing, adapt a small consumer:
+
+```bash
+jq -c '{
+  measurement: "pumping_station_eval",
+  tags: { scenario: "'$SCENARIO'" },
+  fields: { level: .level, volume: .volume, demand: .percControl, safety: (.safetyActive|if . then 1 else 0 end) },
+  timestamp: (.t | tonumber | . * 1000000000)
+}' simulations/logs/$SCENARIO.jsonl \
+  | influx write --bucket=telemetry ...
+```
+
+The `t` field is seconds from the scenario start (not wall-clock), so point the Grafana time range at `now() - $duration` after running.

simulations/formatters/table.js

@@ -0,0 +1,40 @@
+// ASCII table summary of scenario samples.
+// Used by simulations/run.js.
+
+function pad(s, n, left = false) {
+  s = String(s ?? '');
+  if (s.length >= n) return s.slice(0, n);
+  return left ? s.padStart(n) : s.padEnd(n);
+}
+
+function num(x, digits = 2) {
+  return Number.isFinite(x) ? x.toFixed(digits) : '—';
+}
+
+function formatTable(records, sampleEvery = 1) {
+  if (!records.length) return '  (no records)';
+  const header = ['t(s)', 'level(m)', 'vol(m3)', 'dir', 'netFlow(m3/s)', 'src', 'demand', 'safe'];
+  const rows = [];
+  for (let i = 0; i < records.length; i += sampleEvery) rows.push(records[i]);
+  if (rows[rows.length - 1] !== records[records.length - 1]) rows.push(records[records.length - 1]);
+
+  const widths = [6, 9, 9, 10, 14, 14, 8, 5];
+  const lines = [];
+  lines.push(header.map((h, i) => pad(h, widths[i], true)).join('  '));
+  lines.push(widths.map((w) => '─'.repeat(w)).join('  '));
+  for (const r of rows) {
+    lines.push([
+      pad(r.t, widths[0], true),
+      pad(num(r.level, 2), widths[1], true),
+      pad(num(r.volume, 2), widths[2], true),
+      pad(r.direction ?? '—', widths[3], true),
+      pad(num(r.netFlow, 5), widths[4], true),
+      pad(r.flowSource ?? '—', widths[5], true),
+      pad(num(r.percControl, 0) + '%', widths[6], true),
+      pad(r.safetyActive ? '⚠' : '·', widths[7], true),
+    ].join('  '));
+  }
+  return lines.map((l) => '  ' + l).join('\n');
+}
+
+module.exports = { formatTable };

simulations/logs/.gitignore

@@ -0,0 +1,2 @@
+*.jsonl
+!.gitignore

simulations/run.js

@@ -0,0 +1,201 @@
+#!/usr/bin/env node
+// Scenario runner for pumpingStation. Usage:
+//
+//   node simulations/run.js <scenario>            # run one
+//   node simulations/run.js --all                 # run all scenarios
+//
+// Each scenario lives in simulations/scenarios/<name>.js and exports:
+//   { name, description, durationSec, config, setup?, inputs, expectations? }
+//
+// The runner ticks the station once per simulated second, records every
+// state into simulations/logs/<name>.jsonl, prints a summary table + event log,
+// and checks expectations.
+
+const path = require('path');
+const fs = require('fs');
+const PumpingStation = require('../src/specificClass');
+const { formatTable } = require('./formatters/table');
+
+function loadScenario(name) {
+  return require(path.join(__dirname, 'scenarios', name));
+}
+
+function snapshot(t, ps) {
+  const lvl = ps.measurements.type('level').variant('predicted').position('atequipment').getCurrentValue('m');
+  const vol = ps.measurements.type('volume').variant('predicted').position('atequipment').getCurrentValue('m3');
+  return {
+    t,
+    level: lvl,
+    volume: vol,
+    direction: ps.state?.direction ?? null,
+    netFlow: ps.state?.netFlow ?? null,
+    flowSource: ps.state?.flowSource ?? null,
+    timeleft: ps.state?.seconds ?? null,
+    percControl: ps.percControl,
+    mode: ps.mode,
+    safetyActive: !!ps.safetyControllerActive,
+  };
+}
+
+function evalExpectation(ex, records) {
+  const levels = records.map((r) => r.level).filter(Number.isFinite);
+  const demands = records.map((r) => r.percControl).filter(Number.isFinite);
+  const last = records[records.length - 1] || {};
+  switch (ex.type) {
+    case 'max_level_bounded': {
+      const v = Math.max(...levels);
+      return { ok: v <= ex.value, msg: `max level = ${v.toFixed(2)} m (bound: ≤ ${ex.value})` };
+    }
+    case 'min_level_bounded': {
+      const v = Math.min(...levels);
+      return { ok: v >= ex.value, msg: `min level = ${v.toFixed(2)} m (bound: ≥ ${ex.value})` };
+    }
+    case 'max_demand_bounded': {
+      const v = Math.max(...demands);
+      return { ok: v <= ex.value, msg: `max demand = ${v.toFixed(0)} % (bound: ≤ ${ex.value})` };
+    }
+    case 'max_demand_gt': {
+      const v = Math.max(...demands);
+      return { ok: v > ex.value, msg: `max demand = ${v.toFixed(0)} % (expected > ${ex.value})` };
+    }
+    case 'safety_trips_eq': {
+      const n = records.filter((r) => r.safetyActive).length;
+      return { ok: n === ex.value, msg: `${n} ticks with safetyActive (expected ${ex.value})` };
+    }
+    case 'safety_trips_gt': {
+      const n = records.filter((r) => r.safetyActive).length;
+      return { ok: n > ex.value, msg: `${n} ticks with safetyActive (expected > ${ex.value})` };
+    }
+    case 'end_state_eq': {
+      return { ok: last[ex.field] === ex.value, msg: `end ${ex.field} = ${last[ex.field]} (expected ${ex.value})` };
+    }
+    case 'threshold_issues_eq': {
+      const n = (records[0] && records[0].thresholdIssues) || 0;
+      return { ok: n === ex.value, msg: `${n} threshold issues at startup (expected ${ex.value})` };
+    }
+    default:
+      return { ok: false, msg: `unknown expectation type: ${ex.type}` };
+  }
+}
+
+function events(records) {
+  const out = [];
+  let prev = null;
+  for (const r of records) {
+    if (!prev) { prev = r; continue; }
+    if (r.direction !== prev.direction) out.push({ t: r.t, kind: 'direction', from: prev.direction, to: r.direction });
+    if (r.safetyActive !== prev.safetyActive) out.push({ t: r.t, kind: 'safety', active: r.safetyActive });
+    if (r.mode !== prev.mode) out.push({ t: r.t, kind: 'mode', from: prev.mode, to: r.mode });
+    prev = r;
+  }
+  return out;
+}
+
+async function runScenario(name) {
+  const scenario = loadScenario(name);
+
+  // Use simulated time so the volume integrator sees 1 s per tick.
+  // The class reads Date.now() internally; monkey-patching lets it
+  // advance at scenario pace rather than wall-clock.
+  const realNow = Date.now;
+  let simTime = realNow();
+  Date.now = () => simTime;
+
+  try {
+    const ps = new PumpingStation(scenario.config);
+    if (scenario.setup) await scenario.setup(ps);
+
+    const duration = scenario.durationSec ?? 600;
+    const logDir = path.join(__dirname, 'logs');
+    fs.mkdirSync(logDir, { recursive: true });
+    const logPath = path.join(logDir, `${scenario.name}.jsonl`);
+    const log = fs.createWriteStream(logPath);
+
+    const records = [];
+    for (let t = 0; t < duration; t += 1) {
+      simTime += 1000;  // advance 1 simulated second
+      if (scenario.inputs) scenario.inputs(t, ps);
+      ps.tick();
+      const snap = snapshot(t, ps);
+      snap.thresholdIssues = ps.thresholdIssues?.length ?? 0;
+      records.push(snap);
+      log.write(JSON.stringify(snap) + '\n');
+    }
+    // Drain so the file is fully written before we return.
+    await new Promise((resolve, reject) => { log.end(); log.on('finish', resolve); log.on('error', reject); });
+
+    return { ps, records, scenario, duration, logPath };
+  } finally {
+    Date.now = realNow;
+  }
+}
+
+async function runAndReport(name) {
+  const { ps, records, scenario, duration, logPath } = await runScenario(name);
+
+  // Output
+  console.log(`\n═══ Scenario: ${scenario.name} ═══`);
+  console.log(scenario.description);
+  console.log(`Duration: ${duration}s, 1s ticks`);
+
+  console.log('\n─── Samples (every 10%) ───');
+  console.log(formatTable(records, Math.max(1, Math.floor(duration / 10))));
+
+  const evts = events(records);
+  console.log(`\n─── Events (${evts.length}) ───`);
+  if (!evts.length) console.log('  (none)');
+  for (const e of evts) {
+    if (e.kind === 'direction') console.log(`  t=${String(e.t).padStart(4)}s  direction  ${e.from} → ${e.to}`);
+    else if (e.kind === 'safety') console.log(`  t=${String(e.t).padStart(4)}s  safety     ${e.active ? 'ACTIVE ⚠' : 'cleared'}`);
+    else if (e.kind === 'mode') console.log(`  t=${String(e.t).padStart(4)}s  mode       ${e.from} → ${e.to}`);
+  }
+
+  console.log('\n─── Metrics ───');
+  const levels = records.map((r) => r.level).filter(Number.isFinite);
+  const demands = records.map((r) => r.percControl).filter(Number.isFinite);
+  const trips = records.filter((r) => r.safetyActive).length;
+  if (levels.length) {
+    console.log(`  level       min=${Math.min(...levels).toFixed(2)}  max=${Math.max(...levels).toFixed(2)}  end=${levels[levels.length-1].toFixed(2)} m`);
+  }
+  if (demands.length) {
+    console.log(`  percControl min=${Math.min(...demands).toFixed(0)}%  max=${Math.max(...demands).toFixed(0)}%  end=${demands[demands.length-1].toFixed(0)}%`);
+  }
+  console.log(`  safety      trips=${trips} ticks`);
+  console.log(`  threshold   issues=${ps.thresholdIssues?.length ?? 0} at startup`);
+
+  let allOk = true;
+  if (scenario.expectations?.length) {
+    console.log('\n─── Expectations ───');
+    for (const ex of scenario.expectations) {
+      const { ok, msg } = evalExpectation(ex, records);
+      allOk = allOk && ok;
+      console.log(`  ${ok ? '✓' : '✗'} ${ex.name}: ${msg}`);
+    }
+  }
+
+  console.log(`\nLog: ${path.relative(process.cwd(), logPath)} (${records.length} records)`);
+  console.log(allOk ? '✅ PASS' : '❌ FAIL');
+  return allOk;
+}
+
+async function main() {
+  const arg = process.argv[2];
+  if (!arg) {
+    console.error('Usage: node simulations/run.js <scenario> | --all');
+    console.error('Available:', fs.readdirSync(path.join(__dirname, 'scenarios')).map((f) => f.replace(/\.js$/, '')).join(', '));
+    process.exit(1);
+  }
+  if (arg === '--all') {
+    const names = fs.readdirSync(path.join(__dirname, 'scenarios')).filter((f) => f.endsWith('.js')).map((f) => f.replace(/\.js$/, ''));
+    let allOk = true;
+    for (const name of names) {
+      try { allOk = (await runAndReport(name)) && allOk; }
+      catch (err) { console.error(`ERROR in ${name}:`, err.message); allOk = false; }
+    }
+    process.exit(allOk ? 0 : 1);
+  }
+  try { process.exit((await runAndReport(arg)) ? 0 : 1); }
+  catch (err) { console.error('ERROR:', err.message, '\n', err.stack); process.exit(1); }
+}
+
+main();

simulations/scenarios/levelbased-steady.js

@@ -0,0 +1,61 @@
+// Steady sewer inflow, level-based control, pumps should settle.
+//
+// Expectation: with a stable inflow of 0.008 m³/s and a pump bank with
+// max capacity 0.012 m³/s, the level settles in the RAMP zone (between
+// inflowLevel and maxLevel while filling) at roughly the point where demand matches
+// inflow. No safety trips should fire.
+
+module.exports = {
+  name: 'levelbased-steady',
+  description: 'Constant sewer inflow below pump capacity; level converges inside the RAMP zone with demand matching inflow.',
+  durationSec: 3600,
+
+  config: {
+    general: { name: 'EvalSteady', id: 'eval-steady', unit: 'm3/h',
+      logging: { enabled: false, logLevel: 'error' } },
+    functionality: { softwareType: 'pumpingStation', role: 'stationcontroller', positionVsParent: 'atEquipment' },
+    basin: { volume: 50, height: 5, inflowLevel: 3, outflowLevel: 0.2, overflowLevel: 4.5, inletPipeDiameter: 0.4, outletPipeDiameter: 0.3 },
+    hydraulics: { refHeight: 'NAP', basinBottomRef: 0, minHeightBasedOn: 'outlet' },
+    control: {
+      mode: 'levelbased',
+      allowedModes: new Set(['levelbased']),
+      levelbased: { minLevel: 1, startLevel: 2, maxLevel: 4, curveType: 'linear', logCurveFactor: 9 },
+    },
+    safety: {
+      enableDryRunProtection: true,
+      dryRunThresholdPercent: 2,
+      enableHighVolumeSafety: true,
+      highVolumeSafetyThresholdPercent: 98,
+      timeleftToFullOrEmptyThresholdSeconds: 0,
+    },
+  },
+
+  setup: async (ps) => {
+    // Stub MGC: its pumps collectively deliver (demand/100) × MAX_OUTFLOW.
+    const MAX_OUTFLOW = 0.012;  // m³/s
+    ps.machineGroups['mgc1'] = {
+      config: { general: { name: 'mgc1' } },
+      turnOffAllMachines: () => {
+        ps.measurements.type('flow').variant('predicted').position('out').child('mgc1').value(0, Date.now(), 'm3/s');
+      },
+      handleInput: async (_source, demand) => {
+        const d = Math.max(0, Math.min(100, Number(demand) || 0));
+        const outflow = (d / 100) * MAX_OUTFLOW;
+        ps.measurements.type('flow').variant('predicted').position('out').child('mgc1').value(outflow, Date.now(), 'm3/s');
+      },
+    };
+    ps.calibratePredictedLevel(2.0);  // start at the mode start level, below the rising ramp
+  },
+
+  inputs: (t, ps) => {
+    ps.setManualInflow(0.008, Date.now(), 'm3/s');  // ≈ 29 m³/h
+  },
+
+  expectations: [
+    { name: 'no safety trips', type: 'safety_trips_eq', value: 0 },
+    { name: 'level stays below overflow', type: 'max_level_bounded', value: 4.5 },
+    { name: 'level stays above outflow', type: 'min_level_bounded', value: 0.2 },
+    { name: 'rising ramp engages after inlet level', type: 'max_demand_gt', value: 0 },
+    { name: 'no threshold issues on init', type: 'threshold_issues_eq', value: 0 },
+  ],
+};

simulations/scenarios/levelbased-storm.js

@@ -0,0 +1,60 @@
+// Storm surge — inflow triples briefly, pumps should increase demand as
+// the level enters the rising ramp.
+//
+// Expectation: during the surge (t=300..600), demand rises but remains
+// bounded. High-volume safety should fire if the surge overwhelms pump
+// capacity; dry-run should not fire.
+
+module.exports = {
+  name: 'levelbased-storm',
+  description: 'Sewer inflow triples from 0.008 → 0.024 m³/s for 5 minutes then returns to baseline. High-volume safety may engage.',
+  durationSec: 1500,
+
+  config: {
+    general: { name: 'EvalStorm', id: 'eval-storm', unit: 'm3/h',
+      logging: { enabled: false, logLevel: 'error' } },
+    functionality: { softwareType: 'pumpingStation', role: 'stationcontroller', positionVsParent: 'atEquipment' },
+    basin: { volume: 50, height: 5, inflowLevel: 3, outflowLevel: 0.2, overflowLevel: 4.5, inletPipeDiameter: 0.4, outletPipeDiameter: 0.3 },
+    hydraulics: { refHeight: 'NAP', basinBottomRef: 0, minHeightBasedOn: 'outlet' },
+    control: {
+      mode: 'levelbased',
+      allowedModes: new Set(['levelbased']),
+      levelbased: { minLevel: 1, startLevel: 2, maxLevel: 4, curveType: 'linear', logCurveFactor: 9 },
+    },
+    safety: {
+      enableDryRunProtection: true,
+      dryRunThresholdPercent: 2,
+      enableHighVolumeSafety: true,
+      highVolumeSafetyThresholdPercent: 95,
+      timeleftToFullOrEmptyThresholdSeconds: 0,
+    },
+  },
+
+  setup: async (ps) => {
+    const MAX_OUTFLOW = 0.012;  // m³/s pumps cannot keep up with 3× surge
+    ps.machineGroups['mgc1'] = {
+      config: { general: { name: 'mgc1' } },
+      turnOffAllMachines: () => {
+        ps.measurements.type('flow').variant('predicted').position('out').child('mgc1').value(0, Date.now(), 'm3/s');
+      },
+      handleInput: async (_src, demand) => {
+        const d = Math.max(0, Math.min(100, Number(demand) || 0));
+        const outflow = (d / 100) * MAX_OUTFLOW;
+        ps.measurements.type('flow').variant('predicted').position('out').child('mgc1').value(outflow, Date.now(), 'm3/s');
+      },
+    };
+    ps.calibratePredictedLevel(2.5);
+  },
+
+  inputs: (t, ps) => {
+    const surge = (t >= 300 && t < 600) ? 0.024 : 0.008;
+    ps.setManualInflow(surge, Date.now(), 'm3/s');
+  },
+
+  expectations: [
+    { name: 'dry-run never trips', type: 'end_state_eq', field: 'safetyActive', value: false },
+    // Level may exceed maxLevel transiently but must stay under basinHeight
+    { name: 'level never breaches physical basin', type: 'max_level_bounded', value: 5.0 },
+    { name: 'demand remains bounded during surge', type: 'max_demand_bounded', value: 100 },
+  ],
+};

simulations/scenarios/safety-dry-run-trip.js

@@ -0,0 +1,66 @@
+// Dry-run safety trip — manual mode, fixed high demand, zero inflow.
+// Levelbased control would taper demand as the level drops (its ramp),
+// stalling drainage before safety fires. Manual mode holds demand
+// constant so the level actually reaches the dry-run threshold.
+
+module.exports = {
+  name: 'safety-dry-run-trip',
+  description: 'Manual mode, constant 100 % demand, zero inflow; expect safety to force-stop downstream pumps when level reaches the dry-run threshold.',
+  durationSec: 600,
+
+  config: {
+    general: { name: 'EvalDryRun', id: 'eval-dry-run', unit: 'm3/h',
+      logging: { enabled: false, logLevel: 'error' } },
+    functionality: { softwareType: 'pumpingStation', role: 'stationcontroller', positionVsParent: 'atEquipment' },
+    basin: { volume: 50, height: 5, inflowLevel: 3, outflowLevel: 0.2, overflowLevel: 4.5, inletPipeDiameter: 0.4, outletPipeDiameter: 0.3 },
+    hydraulics: { refHeight: 'NAP', basinBottomRef: 0, minHeightBasedOn: 'outlet' },
+    control: {
+      mode: 'manual',
+      allowedModes: new Set(['levelbased', 'manual']),
+      levelbased: { minLevel: 0.5, startLevel: 2, maxLevel: 4, curveType: 'linear', logCurveFactor: 9 },
+    },
+    safety: {
+      enableDryRunProtection: true,
+      dryRunThresholdPercent: 50,
+      enableHighVolumeSafety: false,
+      highVolumeSafetyThresholdPercent: 98,
+      timeleftToFullOrEmptyThresholdSeconds: 0,
+    },
+  },
+
+  setup: async (ps) => {
+    const MAX_OUTFLOW = 0.04;
+    let mgcRunning = true;  // gets toggled by safety's shutdown call
+    ps.machineGroups['mgc1'] = {
+      config: { general: { name: 'mgc1', id: 'mgc1' }, functionality: { positionVsParent: 'downstream' } },
+      turnOffAllMachines: () => {
+        mgcRunning = false;
+        ps.measurements.type('flow').variant('predicted').position('out').child('mgc1').value(0, Date.now(), 'm3/s');
+      },
+      handleInput: async (_src, demand) => {
+        if (!mgcRunning) return;
+        const d = Math.max(0, Math.min(100, Number(demand) || 0));
+        ps.measurements.type('flow').variant('predicted').position('out').child('mgc1').value((d / 100) * MAX_OUTFLOW, Date.now(), 'm3/s');
+      },
+    };
+    // Need a downstream machine for safety to shut down
+    ps.machines['pump1'] = {
+      config: { general: { name: 'pump1', id: 'pump1' }, functionality: { positionVsParent: 'downstream' } },
+      _isOperationalState: () => mgcRunning,
+      handleInput: async (_src, action) => {
+        if (action === 'execSequence') mgcRunning = false;
+      },
+    };
+    ps.calibratePredictedLevel(2.5);
+  },
+
+  inputs: (t, ps) => {
+    ps.setManualInflow(0, Date.now(), 'm3/s');
+    if (ps.mode === 'manual') ps.forwardDemandToChildren(100);
+  },
+
+  expectations: [
+    { name: 'safety engages at some point', type: 'safety_trips_gt', value: 0 },
+    { name: 'level never goes below outflow pipe', type: 'min_level_bounded', value: 0.2 },
+  ],
+};

src/basin/BasinGeometry.js

@@ -0,0 +1,99 @@
+// Basin geometry for a wet-well pumping station.
+//
+// Models the basin as a rectangular prism (constant cross-section), so
+// volume = level × surfaceArea. Owns the level↔volume conversions and the
+// derived threshold volumes used by control + safety. Pure domain — no
+// Node-RED, no logger, no side effects beyond construction.
+
+class BasinGeometry {
+  /**
+   * @param {object} basinConfig - { volume, height, inflowLevel, outflowLevel, overflowLevel }
+   * @param {object} hydraulicsConfig - { minHeightBasedOn: 'inlet' | 'outlet' }
+   */
+  constructor(basinConfig, hydraulicsConfig) {
+    const volEmptyBasin = basinConfig.volume;
+    const heightBasin = basinConfig.height;
+    const inflowLevel = basinConfig.inflowLevel;
+    const outflowLevel = basinConfig.outflowLevel;
+    const overflowLevel = basinConfig.overflowLevel;
+    const inletPipeDiameter = basinConfig.inletPipeDiameter;
+    const outletPipeDiameter = basinConfig.outletPipeDiameter;
+    const minHeightBasedOn = hydraulicsConfig?.minHeightBasedOn;
+
+    const surfaceArea = volEmptyBasin / heightBasin;
+
+    // maxVol ≡ volEmptyBasin under the constant cross-section assumption;
+    // kept as a separate field for naming symmetry with the trigger volumes.
+    const maxVol = heightBasin * surfaceArea;
+    const maxVolAtOverflow = overflowLevel * surfaceArea;
+    const minVolAtOutflow = outflowLevel * surfaceArea;
+    const minVolAtInflow = inflowLevel * surfaceArea;
+    const minVol = minHeightBasedOn === 'inlet' ? minVolAtInflow : minVolAtOutflow;
+
+    this._volEmptyBasin = volEmptyBasin;
+    this._heightBasin = heightBasin;
+    this._inflowLevel = inflowLevel;
+    this._outflowLevel = outflowLevel;
+    this._overflowLevel = overflowLevel;
+    this._inletPipeDiameter = inletPipeDiameter;
+    this._outletPipeDiameter = outletPipeDiameter;
+    this._surfaceArea = surfaceArea;
+    this._maxVol = maxVol;
+    this._maxVolAtOverflow = maxVolAtOverflow;
+    this._minVolAtInflow = minVolAtInflow;
+    this._minVolAtOutflow = minVolAtOutflow;
+    this._minVol = minVol;
+    this._minHeightBasedOn = minHeightBasedOn;
+  }
+
+  get volEmptyBasin()    { return this._volEmptyBasin; }
+  get heightBasin()      { return this._heightBasin; }
+  get inflowLevel()      { return this._inflowLevel; }
+  get outflowLevel()     { return this._outflowLevel; }
+  get overflowLevel()    { return this._overflowLevel; }
+  get inletPipeDiameter()  { return this._inletPipeDiameter; }
+  get outletPipeDiameter() { return this._outletPipeDiameter; }
+  get surfaceArea()      { return this._surfaceArea; }
+  get maxVol()           { return this._maxVol; }
+  get maxVolAtOverflow() { return this._maxVolAtOverflow; }
+  get minVolAtInflow()   { return this._minVolAtInflow; }
+  get minVolAtOutflow()  { return this._minVolAtOutflow; }
+  get minVol()           { return this._minVol; }
+  get minHeightBasedOn() { return this._minHeightBasedOn; }
+
+  /** Convert level (m from floor) → volume (m3). Negative levels clamp to 0. */
+  volumeFromLevel(level) {
+    return Math.max(level, 0) * this._surfaceArea;
+  }
+
+  /** Convert volume (m3) → level (m from floor). Negative volumes clamp to 0. */
+  levelFromVolume(volume) {
+    return Math.max(volume, 0) / this._surfaceArea;
+  }
+
+  /**
+   * Plain-object snapshot mirroring the legacy `this.basin` shape so
+   * getOutput / status code can keep using the same field names without
+   * caring whether it's holding a class instance or a plain object.
+   */
+  snapshot() {
+    return {
+      volEmptyBasin: this._volEmptyBasin,
+      heightBasin: this._heightBasin,
+      inflowLevel: this._inflowLevel,
+      outflowLevel: this._outflowLevel,
+      overflowLevel: this._overflowLevel,
+      inletPipeDiameter: this._inletPipeDiameter,
+      outletPipeDiameter: this._outletPipeDiameter,
+      surfaceArea: this._surfaceArea,
+      maxVol: this._maxVol,
+      maxVolAtOverflow: this._maxVolAtOverflow,
+      minVolAtInflow: this._minVolAtInflow,
+      minVolAtOutflow: this._minVolAtOutflow,
+      minVol: this._minVol,
+      minHeightBasedOn: this._minHeightBasedOn,
+    };
+  }
+}
+
+module.exports = BasinGeometry;

src/basin/thresholdValidator.js

@@ -0,0 +1,107 @@
+// Threshold-ordering validator for the pumpingStation basin + control +
+// safety config. Pure: returns the issues array, never logs or throws.
+// The caller decides what to do (warn, surface to status badge, fail tests).
+//
+// Invariants enforced (level-space, bottom → top):
+//   0 < outflowLevel < inflowLevel < overflowLevel ≤ basinHeight
+//   dryRunLevel ≤ minLevel ≤ startLevel ≤ holdLevel < maxLevel ≤ highVolumeSafetyLevel < overflowLevel
+//
+// startLevel is INTENTIONALLY not constrained against inflowLevel: setting
+// startLevel above the gravity-feed inlet is the "buffer in the sewer"
+// configuration where the upstream pipe network is used as overflow storage
+// before pumping engages. holdLevel (optional, defaults to startLevel when
+// omitted) is the 0 % ramp foot — pumps engage at startLevel but hold at
+// min flow until level rises through holdLevel.
+//
+// dryRunLevel and highVolumeSafetyLevel are DERIVED from safety percentages.
+// The validator recomputes them so a config that places minLevel below the
+// effective dry-run trigger (a no-op control band) is caught here.
+
+/**
+ * Derived safety thresholds + reference levels. Exposed so the editor /
+ * status badge / FlowAggregator can read the same values without
+ * recomputing them.
+ */
+function computeSafetyPoints(basin, safety = {}) {
+  const dryRunPct = Number(safety.dryRunThresholdPercent) || 0;
+  const rawHighPct = safety.highVolumeSafetyThresholdPercent ?? safety.overfillThresholdPercent;
+  // When neither high-volume nor overfill pct is supplied, use 100 % so
+  // the validator's `maxLevel <= highVolumeSafetyLevel` check is a no-op
+  // (the basin can't physically exceed overflow anyway). Tests pin this.
+  const highPct = Number(rawHighPct);
+  const effectiveHighPct = Number.isFinite(highPct) ? highPct : 100;
+  const minVol = Number(basin?.minVol) || 0;
+  const maxVolAtOverflow = Number(basin?.maxVolAtOverflow) || 0;
+  const dryRunSafetyVol = minVol * (1 + dryRunPct / 100);
+  const highVolumeSafetyVol = maxVolAtOverflow * (effectiveHighPct / 100);
+  const refLowLevel = basin?.minHeightBasedOn === 'inlet'
+    ? Number(basin?.inflowLevel)
+    : Number(basin?.outflowLevel);
+  const dryRunLevel = Number.isFinite(refLowLevel)
+    ? refLowLevel * (1 + dryRunPct / 100)
+    : Number.NaN;
+  const overflowLevel = Number(basin?.overflowLevel) || 0;
+  const highVolumeSafetyLevel = overflowLevel * (effectiveHighPct / 100);
+  return {
+    dryRunSafetyVol,
+    dryRunLevel,
+    highVolumeSafetyVol,
+    highVolumeSafetyLevel,
+    // Back-compat alias — pre-basin-docs name.
+    overfillVol: highVolumeSafetyVol,
+  };
+}
+
+/**
+ * @param {object} basin - BasinGeometry instance OR plain {inflowLevel, outflowLevel, overflowLevel, heightBasin, minHeightBasedOn}
+ * @param {object} levelbased - config.control.levelbased ({ minLevel, startLevel, maxLevel })
+ * @param {object} safety - config.safety ({ dryRunThresholdPercent, highVolumeSafetyThresholdPercent | overfillThresholdPercent })
+ * @returns {Array<{aName, a, op, bName, b, msg}>}
+ */
+function validateThresholdOrdering(basin, levelbased, safety) {
+  const lvl = levelbased || {};
+  const points = computeSafetyPoints(basin, safety);
+  const { dryRunLevel, highVolumeSafetyLevel } = points;
+
+  // holdLevel is optional — when omitted (null/undefined/NaN) it equals
+  // startLevel at runtime, so skip both holdLevel-related checks in that
+  // case (the canonical engine semantics still hold). Explicit null/undefined
+  // check first so `Number(null) === 0` doesn't accidentally flag a default
+  // schema value as a real operator-provided one.
+  const rawHold = lvl.holdLevel;
+  const holdLevelProvided = rawHold != null && Number.isFinite(Number(rawHold));
+  const holdLevel = holdLevelProvided ? Number(rawHold) : null;
+
+  const checks = [
+    ['outflowLevel',  basin.outflowLevel,  '<',  'inflowLevel',           basin.inflowLevel],
+    ['inflowLevel',   basin.inflowLevel,   '<',  'overflowLevel',         basin.overflowLevel],
+    ['overflowLevel', basin.overflowLevel, '<=', 'basinHeight',           basin.heightBasin],
+    ['dryRunLevel',   dryRunLevel,         '<=', 'minLevel',              lvl.minLevel],
+    ['minLevel',      lvl.minLevel,        '<=', 'startLevel',            lvl.startLevel],
+    ['startLevel',    lvl.startLevel,      '<',  'maxLevel',              lvl.maxLevel],
+    ...(holdLevelProvided ? [
+      ['startLevel',  lvl.startLevel,      '<=', 'holdLevel',             holdLevel],
+      ['holdLevel',   holdLevel,           '<',  'maxLevel',              lvl.maxLevel],
+    ] : []),
+    ['maxLevel',      lvl.maxLevel,        '<=', 'highVolumeSafetyLevel', highVolumeSafetyLevel],
+  ];
+
+  const issues = [];
+  for (const [aName, a, op, bName, b] of checks) {
+    if (!Number.isFinite(a) || !Number.isFinite(b)) continue;
+    const ok = op === '<' ? a < b : a <= b;
+    if (!ok) {
+      issues.push({
+        aName,
+        a,
+        op,
+        bName,
+        b,
+        msg: `Threshold invariant violated: ${aName} (${a}) must be ${op} ${bName} (${b})`,
+      });
+    }
+  }
+  return issues;
+}
+
+module.exports = { validateThresholdOrdering, computeSafetyPoints };

src/commands/handlers.js

@@ -0,0 +1,111 @@
+'use strict';
+
+// Handler functions for pumpingStation commands. Each handler receives:
+//   source: the domain (specificClass) instance — has the public methods
+//           (changeMode, calibratePredicted*, setManualInflow, ...).
+//   msg:    the Node-RED input message.
+//   ctx:    { node, RED, send, logger } — provided by BaseNodeAdapter.
+//
+// Handlers are pure functions: they don't keep state. Validation that goes
+// beyond the registry's typeof-check ladder lives here.
+
+function _logger(source, ctx) {
+  return ctx?.logger || source?.logger || null;
+}
+
+exports.setMode = (source, msg) => {
+  source.changeMode(msg.payload);
+};
+
+exports.registerChild = (source, msg, ctx) => {
+  const log = _logger(source, ctx);
+  const childId = msg.payload;
+  const childObj = ctx?.RED?.nodes?.getNode?.(childId);
+  if (!childObj || !childObj.source) {
+    log?.warn?.(`registerChild: child '${childId}' not found or has no .source`);
+    return;
+  }
+  source.childRegistrationUtils.registerChild(childObj.source, msg.positionVsParent);
+};
+
+exports.calibrateVolume = (source, msg, ctx) => {
+  const log = _logger(source, ctx);
+  const v = parseFloat(msg.payload);
+  if (!Number.isFinite(v)) {
+    log?.warn?.(`cmd.calibrate.volume: non-numeric payload '${msg.payload}'`);
+    return;
+  }
+  source.calibratePredictedVolume(v);
+};
+
+exports.calibrateLevel = (source, msg, ctx) => {
+  const log = _logger(source, ctx);
+  const v = parseFloat(msg.payload);
+  if (!Number.isFinite(v)) {
+    log?.warn?.(`cmd.calibrate.level: non-numeric payload '${msg.payload}'`);
+    return;
+  }
+  source.calibratePredictedLevel(v);
+};
+
+exports.setInflow = (source, msg) => {
+  // Payload is either a number (legacy q_in shape) or
+  // { value, unit, timestamp } (richer object form).
+  const p = msg.payload;
+  let value;
+  let unit;
+  let timestamp;
+  if (p !== null && typeof p === 'object') {
+    value = Number(p.value);
+    unit = p.unit;
+    timestamp = p.timestamp || Date.now();
+  } else {
+    value = Number(p);
+    unit = msg?.unit;
+    timestamp = msg?.timestamp || Date.now();
+  }
+  source.setManualInflow(value, timestamp, unit);
+};
+
+exports.setOutflow = (source, msg) => {
+  // Manual q_out — basin-docs dashboard injects a drain rate without
+  // wiring a real pump. Same payload shape as q_in.
+  const p = msg.payload;
+  let value;
+  let unit;
+  let timestamp;
+  if (p !== null && typeof p === 'object') {
+    value = Number(p.value);
+    unit = p.unit;
+    timestamp = p.timestamp || Date.now();
+  } else {
+    value = Number(p);
+    unit = msg?.unit;
+    timestamp = msg?.timestamp || Date.now();
+  }
+  source.setManualOutflow(value, timestamp, unit);
+};
+
+exports.setDemand = (source, msg, ctx) => {
+  const log = _logger(source, ctx);
+  // generalFunctions/commandRegistry's _normaliseUnits has already converted
+  // msg.payload to m3/h (the descriptor's units.default — see
+  // commands/index.js). Accepts {value, unit} objects upstream; we just read
+  // the normalized number here. _manualDemand is stored in m3/h, no further
+  // conversion needed.
+  const demand = Number(msg?.payload);
+  if (!Number.isFinite(demand)) {
+    log?.warn?.(`set.demand: invalid Qd value '${JSON.stringify(msg?.payload)}'`);
+    return;
+  }
+  if (source.mode !== 'manual') {
+    log?.debug?.(
+      `set.demand ignored in '${source.mode}' mode; switch to manual to use the demand slider`
+    );
+    return;
+  }
+  // forwardDemandToChildren returns a promise — surface failures via logger.
+  Promise.resolve(source.forwardDemandToChildren(demand)).catch((err) => {
+    log?.error?.(`set.demand: failed to forward demand: ${err && err.message}`);
+  });
+};

src/commands/index.js

@@ -0,0 +1,68 @@
+'use strict';
+
+// pumpingStation command registry. Consumed by BaseNodeAdapter via
+// `static commands = require('./commands')`. Each descriptor maps a
+// canonical msg.topic to its handler; legacy names are listed under
+// `aliases` and emit a one-time deprecation warning at runtime.
+
+const handlers = require('./handlers');
+
+module.exports = [
+  {
+    topic: 'set.mode',
+    aliases: ['changemode'],
+    payloadSchema: { type: 'string' },
+    description: 'Switch the station between auto / manual control modes.',
+    handler: handlers.setMode,
+  },
+  {
+    topic: 'child.register',
+    aliases: ['registerChild'],
+    // payload is the Node-RED id (string) of the child node.
+    payloadSchema: { type: 'string' },
+    description: 'Register a child node (machine group, measurement, …) with this station.',
+    handler: handlers.registerChild,
+  },
+  {
+    topic: 'cmd.calibrate.volume',
+    aliases: ['calibratePredictedVolume'],
+    // any: payload may be a number or numeric string.
+    payloadSchema: { type: 'any' },
+    units: { measure: 'volume', default: 'm3' },
+    description: 'Calibrate the predicted-volume integrator to a known basin volume.',
+    handler: handlers.calibrateVolume,
+  },
+  {
+    topic: 'cmd.calibrate.level',
+    aliases: ['calibratePredictedLevel'],
+    payloadSchema: { type: 'any' },
+    units: { measure: 'length', default: 'm' },
+    description: 'Calibrate the predicted-volume integrator to a known basin level.',
+    handler: handlers.calibrateLevel,
+  },
+  {
+    topic: 'set.inflow',
+    aliases: ['q_in'],
+    // any: number, numeric string, or { value, unit, timestamp } object.
+    payloadSchema: { type: 'any' },
+    units: { measure: 'volumeFlowRate', default: 'm3/h' },
+    description: 'Push a measured inflow value into the basin balance.',
+    handler: handlers.setInflow,
+  },
+  {
+    topic: 'set.outflow',
+    aliases: ['q_out'],
+    payloadSchema: { type: 'any' },
+    units: { measure: 'volumeFlowRate', default: 'm3/h' },
+    description: 'Push a measured outflow value into the basin balance.',
+    handler: handlers.setOutflow,
+  },
+  {
+    topic: 'set.demand',
+    aliases: ['Qd'],
+    payloadSchema: { type: 'any' },
+    units: { measure: 'volumeFlowRate', default: 'm3/h' },
+    description: 'Operator outflow demand setpoint for the station.',
+    handler: handlers.setDemand,
+  },
+];

src/control/flowBased.js

@@ -0,0 +1,11 @@
+// Placeholder — flow-based control mode is not yet implemented.
+// The dispatcher routes here when config.control.mode === 'flowbased',
+// at which point a real implementation should land in this file.
+async function run(ctx) {
+  ctx?.logger?.debug?.('flow-based mode not yet implemented');
+}
+
+module.exports = {
+  name: 'flowbased',
+  run,
+};

src/control/index.js

@@ -0,0 +1,20 @@
+const levelBased = require('./levelBased');
+const flowBased = require('./flowBased');
+const manual = require('./manual');
+
+const strategies = {
+  [levelBased.name]: levelBased,
+  [flowBased.name]: flowBased,
+  [manual.name]: manual,
+};
+
+function dispatch(mode, ctx, controlState, direction) {
+  const s = strategies[mode];
+  if (!s) {
+    ctx.logger?.warn?.(`Unsupported control mode: ${mode}`);
+    return Promise.resolve();
+  }
+  return s.run(ctx, controlState, direction);
+}
+
+module.exports = { strategies, dispatch, manual };

src/control/levelBased.js

@@ -0,0 +1,286 @@
+// Level-based control strategy.
+//
+// Ported from basin-docs `_controlLevelBased` into the refactored
+// strategy module. Concerns kept here:
+//   1. minLevel hard-stop (unconditional MGC shutdown).
+//   2. stopLevel Schmitt-trigger hysteresis — pumps stay engaged
+//      through the dead band [stopLevel, startLevel] emitting a small
+//      keep-alive demand so MGC keeps a single pump draining the basin.
+//   3. Up-curve mapping — level mapped to demand 0..100 % across
+//      [max(startLevel, inflowLevel), maxLevel] using linear or log shape.
+//      Foot at startLevel when startLevel > inflowLevel allows buffering
+//      in the upstream sewer above the gravity-feed point.
+//   4. Shifted-ramp hysteresis — when the up-curve crosses
+//      shiftArmPercent the strategy ARMS; on the next filling→draining
+//      flip it captures the up-curve value as `hold`; while draining
+//      the output stays at `hold` until level falls to shiftLevel, then
+//      ramps `hold → 0 %` over [shiftLevel, startLevel]. Disarms when
+//      level reaches startLevel.
+//
+// Hysteresis flags live on the host (specificClass instance) — the
+// strategy reads/writes via ctx.host so the same flags survive across
+// ticks regardless of how often the context view is rebuilt.
+
+// Apply the configured curve shape to a normalized x in [0, 1].
+// Linear by default; log when curveType is 'log'.
+function _curveShape(x, levelbased) {
+  const { curveType = 'linear', logCurveFactor = 9 } = levelbased || {};
+  const clamped = Math.max(0, Math.min(1, x));
+  if (curveType === 'log') {
+    const factor = Number.isFinite(Number(logCurveFactor)) && Number(logCurveFactor) > 0
+      ? Number(logCurveFactor) : 9;
+    return Math.log1p(factor * clamped) / Math.log1p(factor);
+  }
+  return clamped;
+}
+
+// Map level to demand % across [rampFoot, rampTop]. Returns 0 below the
+// foot, 100 above the top. Curve type controlled by levelbased.curveType.
+function _scaleLevelToFlowPercent(level, rampFoot, rampTop, levelbased) {
+  if (!Number.isFinite(level) || !Number.isFinite(rampFoot) || !Number.isFinite(rampTop)) return 0;
+  if (rampTop <= rampFoot) return level >= rampTop ? 100 : 0;
+  if (level <= rampFoot) return 0;
+  if (level >= rampTop) return 100;
+  const x = (level - rampFoot) / (rampTop - rampFoot);
+  return 100 * _curveShape(x, levelbased);
+}
+
+async function _applyMachineGroupLevelControl(machineGroups, percentControl, logger) {
+  if (!machineGroups || Object.keys(machineGroups).length === 0) return;
+  // The caller (run() below) already gated turn-off via the minLevel
+  // hard-stop, stopLevel falling-edge, and the rising-edge engagement gate.
+  // By the time we get here, pumps should be running — `0 %` is the engaged
+  // "min flow" floor (MGC.setDemand interpolates 0 → dt.flow.min), NOT a
+  // soft turn-off. Forward unconditionally.
+  const forward = (group) => {
+    if (typeof group.setDemand !== 'function') {
+      logger?.error?.(`Group "${group.config?.general?.name}" missing setDemand — refusing to call handleInput with a percent value`);
+      return Promise.resolve();
+    }
+    return Promise.resolve(group.setDemand(percentControl, '%')).catch((err) => {
+      logger?.error?.(`Failed to send level control to group "${group.config?.general?.name}": ${err && err.message}`);
+    });
+  };
+  await Promise.all(Object.values(machineGroups).map(forward));
+}
+
+async function _applyMachineLevelControl(machines, percentControl, logger) {
+  const filtered = Object.values(machines).filter((machine) => {
+    const pos = machine?.config?.functionality?.positionVsParent;
+    return (pos === 'downstream' || pos === 'atequipment');
+  });
+  if (!filtered.length) return;
+
+  const perMachine = percentControl / filtered.length;
+  for (const machine of filtered) {
+    try {
+      await machine.handleInput('parent', 'execSequence', 'startup');
+      await machine.handleInput('parent', 'execMovement', perMachine);
+    } catch (err) {
+      logger?.error?.(`Failed to start machine "${machine.config?.general?.name}": ${err.message}`);
+    }
+  }
+}
+
+function _pickVariant(measurements, type, variants, position, unit) {
+  for (const variant of variants) {
+    const val = measurements.type(type).variant(variant).position(position).getCurrentValue(unit);
+    if (!Number.isFinite(val)) continue;
+    return val;
+  }
+  return null;
+}
+
+async function run(ctx, controlState, direction) {
+  const { measurements, config, logger, machineGroups, basin, levelVariants, host } = ctx;
+  const cfg = config.control.levelbased || {};
+  const { startLevel, minLevel, maxLevel } = cfg;
+  const levelUnit = measurements.getUnit('level');
+
+  const variants = levelVariants || ['measured', 'predicted'];
+  const level = _pickVariant(measurements, 'level', variants, 'atequipment', levelUnit);
+  if (level == null) {
+    logger?.warn?.('No valid level found');
+    return;
+  }
+
+  // 1. minLevel hard-stop — unconditional MGC shutdown.
+  if (level < minLevel) {
+    controlState.percControl = 0;
+    if (host) {
+      host._shiftHoldValue = null;
+      host._shiftArmed = false;
+      host._stopHystRunning = false;
+      host._lastDirection = direction;
+    }
+    Object.values(machineGroups || {}).forEach((group) => group.turnOffAllMachines());
+    return;
+  }
+
+  // 2. stopLevel hysteresis (Schmitt trigger).
+  // Requires an explicit positive stopLevel — configManager merges null
+  // defaults to 0 otherwise, which would activate the hysteresis on every
+  // config that omitted it.
+  const stopLvl = Number(cfg.stopLevel);
+  const stopThresholdActive = cfg.stopLevel != null && Number.isFinite(stopLvl)
+    && stopLvl > 0 && stopLvl < maxLevel;
+  if (stopThresholdActive && level <= stopLvl) {
+    controlState.percControl = 0;
+    if (host) {
+      host._stopHystRunning = false;
+      host._shiftArmed = false;
+      host._shiftHoldValue = null;
+      host._lastDirection = direction;
+    }
+    Object.values(machineGroups || {}).forEach((group) => group.turnOffAllMachines());
+    return;
+  }
+  if (host) {
+    if (stopThresholdActive) {
+      if (!host._stopHystRunning && level >= startLevel) host._stopHystRunning = true;
+    } else {
+      host._stopHystRunning = level >= startLevel;
+    }
+  }
+
+  // 3. Engagement gate. Pumps stay OFF until level rises through startLevel
+  //    for the first time (rising-edge); once engaged they stay on until
+  //    level drops through stopLevel (falling-edge — handled by case 2).
+  //    Without an explicit stopLevel the gate collapses to `level >= startLevel`.
+  //    Moved out of the percentControl path so 0 % can mean "engaged at
+  //    min flow" instead of "stopped". Disengagement also clears the
+  //    shifted-ramp hysteresis so it doesn't survive a stop/start cycle.
+  const isEngaged = host ? host._stopHystRunning : (level >= startLevel);
+  if (!isEngaged) {
+    controlState.percControl = 0;
+    if (host) {
+      host._shiftArmed = false;
+      host._shiftHoldValue = null;
+      host._lastDirection = direction;
+    }
+    Object.values(machineGroups || {}).forEach((group) => group.turnOffAllMachines());
+    return;
+  }
+
+  // 4. Up-curve mapping. Foot = holdLevel (defaults to startLevel; operators
+  //    can raise it to introduce a hold band [startLevel, holdLevel] where
+  //    pumps run at min flow before the ramp begins). `inflowLevel` does NOT
+  //    shape the curve — it's basin geometry, not a control setpoint.
+  //    Explicit null/undefined check first so `Number(null) === 0` doesn't
+  //    silently put the ramp foot at the basin floor.
+  const rawHold = cfg.holdLevel;
+  const holdLevel = (rawHold != null && Number.isFinite(Number(rawHold)))
+    ? Number(rawHold) : startLevel;
+  const rampFoot = Math.max(startLevel, holdLevel);
+  const upPct = _scaleLevelToFlowPercent(level, rampFoot, maxLevel, cfg);
+
+  // 5. Shifted-ramp arming.
+  if (host) {
+    if (cfg.enableShiftedRamp) {
+      const armPct = Number.isFinite(cfg.shiftArmPercent) ? cfg.shiftArmPercent : 95;
+      if (!host._shiftArmed && upPct >= armPct) {
+        host._shiftArmed = true;
+        logger?.debug?.(`Shift armed: upPct=${upPct} >= ${armPct}`);
+      }
+    } else {
+      host._shiftArmed = false;
+    }
+    if (level <= startLevel) {
+      host._shiftArmed = false;
+      host._shiftHoldValue = null;
+    }
+    // Capture hold on filling→draining transition while armed.
+    if (cfg.enableShiftedRamp && host._shiftArmed) {
+      if (host._lastDirection !== 'draining' && direction === 'draining') {
+        host._shiftHoldValue = upPct;
+        logger?.debug?.(`Shift hold captured: ${upPct} % at level=${level}`);
+      } else if (direction === 'filling') {
+        // Returning to filling clears any captured hold; the next drain
+        // transition will recapture from the up curve.
+        host._shiftHoldValue = null;
+      }
+    }
+    if (direction === 'filling' || direction === 'draining') {
+      host._lastDirection = direction;
+    }
+  }
+
+  // Compute output.
+  const shiftArmed = !!host?._shiftArmed;
+  const shiftHold = host?._shiftHoldValue;
+  const inDrainingHold = cfg.enableShiftedRamp && shiftArmed
+    && direction === 'draining' && shiftHold != null;
+
+  let percControl;
+  if (!inDrainingHold) {
+    if (level < rampFoot) {
+      // Engaged (we passed the gate above) but below the ramp foot. Two
+      // sub-cases:
+      //   (a) Inside the configurable hold band [startLevel, holdLevel] —
+      //       emit 0 %, which MGC's setDemand interpolates to flow.min.
+      //   (b) Inside the falling-edge keep-alive band [stopLevel, startLevel]
+      //       — emit deadZoneKeepAlivePercent (default 1 %) so MGC keeps
+      //       at least one pump turning rather than dispatching a clean min.
+      if (stopThresholdActive && level < startLevel) {
+        const keepAlive = Number.isFinite(Number(cfg.deadZoneKeepAlivePercent))
+          ? Number(cfg.deadZoneKeepAlivePercent) : 1;
+        percControl = Math.max(0, keepAlive);
+      } else {
+        percControl = 0;
+      }
+    } else {
+      percControl = Math.max(0, upPct);
+    }
+  } else {
+    const hold = shiftHold;
+    const shift = cfg.shiftLevel;
+    if (!Number.isFinite(shift) || shift <= startLevel) {
+      // Bad config — fall back to up curve.
+      percControl = Math.max(0, upPct);
+    } else if (level >= shift) {
+      percControl = hold;
+    } else if (level > startLevel) {
+      // Ramp [shift, hold] → [start, 0] using the same curve shape.
+      const x = (level - startLevel) / (shift - startLevel);
+      percControl = Math.max(0, hold * _curveShape(x, cfg));
+    } else {
+      percControl = 0;
+    }
+  }
+
+  controlState.percControl = percControl;
+  logger?.debug?.(
+    `Level-based: level=${level} dir=${direction} armed=${shiftArmed} hold=${shiftHold} pct=${percControl}`
+  );
+
+  // We are past every off-gate, so the station is engaged and the computed
+  // demand is meant to drive pumps. If no machine group is registered the
+  // demand has nowhere to go and the pumps stay silent — the signature of a
+  // dropped Port 2 parent↔group registration (e.g. after a partial redeploy
+  // that recreated this node). Warn once until a group reappears so the
+  // failure isn't invisible.
+  const groupCount = machineGroups ? Object.keys(machineGroups).length : 0;
+  if (groupCount === 0) {
+    if (host && !host._warnedNoMachineGroup) {
+      logger?.warn?.(
+        `Level-based control engaged (demand ${percControl.toFixed(1)} %) but no machine group is registered — `
+        + `pumps cannot be driven. The parent↔group registration was likely lost on a partial redeploy; `
+        + `redeploy/restart fully to re-run the Port 2 registration handshake.`
+      );
+      host._warnedNoMachineGroup = true;
+    }
+  } else if (host) {
+    host._warnedNoMachineGroup = false;
+  }
+
+  await _applyMachineGroupLevelControl(machineGroups, percControl, logger);
+}
+
+module.exports = {
+  name: 'levelbased',
+  run,
+  _scaleLevelToFlowPercent,
+  _curveShape,
+  _applyMachineGroupLevelControl,
+  _applyMachineLevelControl,
+};

src/control/manual.js

@@ -0,0 +1,49 @@
+async function run() {
+  // No-op: manual mode is event-driven via set.demand → forwardDemand,
+  // not tick-driven.
+}
+
+async function forwardDemand(ctx, demand) {
+  const { machineGroups, machines, unitPolicy, logger } = ctx;
+  logger?.info?.(`Manual demand forwarded: ${demand}`);
+
+  if (machineGroups && Object.keys(machineGroups).length > 0) {
+    const groupDemand = unitPolicy.convert(demand, 'm3/h', 'm3/s', 'manual demand to machineGroups');
+    await Promise.all(
+      Object.values(machineGroups).map((group) =>
+        group.handleInput('parent', groupDemand).catch((err) => {
+          logger?.error?.(`Failed to forward demand to group: ${err.message}`);
+        })
+      )
+    );
+  }
+
+  if (machines && Object.keys(machines).length > 0) {
+    const perMachine = demand / Object.keys(machines).length;
+    for (const machine of Object.values(machines)) {
+      try {
+        await machine.handleInput('parent', 'execMovement', perMachine);
+      } catch (err) {
+        logger?.error?.(`Failed to forward demand to machine: ${err.message}`);
+      }
+    }
+  }
+
+  // Neither a group nor a direct machine is registered, so the operator's
+  // demand silently goes nowhere. Surface it — the usual cause is a dropped
+  // Port 2 parent↔child registration after a partial redeploy.
+  const noGroups = !machineGroups || Object.keys(machineGroups).length === 0;
+  const noMachines = !machines || Object.keys(machines).length === 0;
+  if (noGroups && noMachines) {
+    logger?.warn?.(
+      `Manual demand ${demand} not forwarded — no machine group or machine is registered to this pumping station. `
+      + `Check the parent↔child Port 2 registration (redeploy/restart fully to restore it).`
+    );
+  }
+}
+
+module.exports = {
+  name: 'manual',
+  run,
+  forwardDemand,
+};

src/editor/basin-diagram.js

@@ -0,0 +1,196 @@
+// PumpingStation editor — interactive basin SVG (top of the editor).
+// Places threshold lines, derived safety levels, zone labels, dead-volume
+// band, and ordering warnings. Same formulas as
+// specificClass._validateThresholdOrdering.
+
+(function () {
+  const ns = window.PSEditor = window.PSEditor || {};
+  const fNum = (id) => ns.fNum(id);
+
+  // viewBox y bounds of the tank rect (now 120,40)..(240,380); width
+  // shrunk to 360 in the new side-panel layout. y-bounds unchanged.
+  const DIAG = { topY: 40, botY: 380 };
+
+  const yForLevel = (val, basinH) => {
+    if (val == null || !basinH) return null;
+    const y = DIAG.botY - (val / basinH) * (DIAG.botY - DIAG.topY);
+    return Math.max(DIAG.topY - 8, Math.min(DIAG.botY + 8, y));
+  };
+
+  // Place a row — line, label, input, unit all share the same y.
+  const placeItem = (id, y) => {
+    const line  = document.getElementById(`ps-line-${id}`);
+    const label = document.getElementById(`ps-label-${id}`);
+    const unit  = document.getElementById(`ps-unit-${id}`);
+    const fo    = document.getElementById(`ps-fo-${id}`);
+    const sub   = document.getElementById(`ps-sub-${id}`);
+    const lead  = document.getElementById(`ps-leader-${id}`);
+    if (line)  { line.setAttribute('y1', y); line.setAttribute('y2', y); }
+    if (label) label.setAttribute('y', y + 4);
+    if (unit)  unit.setAttribute('y', y + 4);
+    if (fo)    fo.setAttribute('y', y - 11);
+    if (sub)   sub.setAttribute('y', y + 15);
+    if (lead)  lead.setAttribute('visibility', 'hidden');
+  };
+
+  ns.basinDiagram = {
+    redraw() {
+      const basinH = fNum('basinHeight') || 5;
+
+      const refLow  = fNum('outflowLevel');
+      const dryPct  = fNum('dryRunThresholdPercent');
+      const highPct = fNum('highVolumeSafetyThresholdPercent');
+      const ovf     = fNum('overflowLevel');
+      const dryLvl  = (refLow != null && dryPct != null) ? refLow * (1 + dryPct / 100) : null;
+      const highLvl = (ovf    != null && highPct != null) ? ovf    * (highPct / 100)     : null;
+
+      // Right-column stack. TWO anchors: basinHeight pinned at the rim,
+      // outflowLevel pinned at its proportional y. Two passes (top-down +
+      // bottom-up) maintain a minimum vertical gap.
+      const items = [
+        { id: 'basinHeight',   yIdeal: DIAG.topY,                                pinned: true },
+        { id: 'overflowLevel', yIdeal: yForLevel(fNum('overflowLevel'), basinH) },
+        { id: 'highVolumeSafetyLevel', yIdeal: yForLevel(highLvl, basinH) },
+        { id: 'inflowLevelGuide', yIdeal: yForLevel(fNum('inflowLevel'), basinH) },
+        { id: 'dryRunLevel',   yIdeal: yForLevel(dryLvl,                basinH) },
+        { id: 'outflowLevel',  yIdeal: yForLevel(fNum('outflowLevel'),  basinH), pinned: true },
+      ].filter(it => it.yIdeal != null);
+
+      const GAP = 36;
+      items.sort((a, b) => a.yIdeal - b.yIdeal);
+      for (const it of items) it.y = it.yIdeal;
+      for (let i = 1; i < items.length; i++) {
+        if (items[i].pinned) continue;
+        items[i].y = Math.max(items[i].y, items[i - 1].y + GAP);
+      }
+      for (let i = items.length - 2; i >= 0; i--) {
+        if (items[i].pinned) continue;
+        items[i].y = Math.min(items[i].y, items[i + 1].y - GAP);
+      }
+      for (const it of items) placeItem(it.id, it.y);
+
+      // Zone labels show only when the gap between the bracketing
+      // thresholds is at least MIN_ZONE_GAP px high — otherwise the label
+      // collides with one of the threshold labels (which sit at threshold
+      // y ±6 px text-height). 28 px keeps a 6 px clear gap above and
+      // below the zone label.
+      const MIN_ZONE_GAP = 28;
+      const placeZone = (zoneId, topId, botId) => {
+        const el = document.getElementById(`ps-zone-${zoneId}`);
+        if (!el) return;
+        const top = items.find(it => it.id === topId);
+        const bot = items.find(it => it.id === botId);
+        if (!top || !bot || (bot.y - top.y) < MIN_ZONE_GAP) {
+          el.setAttribute('visibility', 'hidden'); return;
+        }
+        el.setAttribute('y', (top.y + bot.y) / 2 + 3);
+        el.setAttribute('visibility', 'visible');
+      };
+      placeZone('spare',   'overflowLevel', 'highVolumeSafetyLevel');
+      placeZone('sewage',  'highVolumeSafetyLevel', 'inflowLevelGuide');
+      placeZone('buffer1', 'inflowLevelGuide', 'dryRunLevel');
+      placeZone('buffer2', 'dryRunLevel', 'outflowLevel');
+      const outflowPinned = items.find(it => it.id === 'outflowLevel');
+      const deadLbl = document.getElementById('ps-zone-dead');
+      if (deadLbl && outflowPinned && (DIAG.botY - outflowPinned.y) > 14) {
+        deadLbl.setAttribute('y', (outflowPinned.y + DIAG.botY) / 2 + 3);
+        deadLbl.setAttribute('visibility', 'visible');
+      } else if (deadLbl) {
+        deadLbl.setAttribute('visibility', 'hidden');
+      }
+
+      const inflowY = yForLevel(fNum('inflowLevel'), basinH);
+      if (inflowY != null) {
+        const line = document.getElementById('ps-line-inflowLevel');
+        const lbl  = document.getElementById('ps-label-inflowLevel');
+        const sub  = document.getElementById('ps-sub-inflowLevel');
+        const fo   = document.getElementById('ps-fo-inflowLevel');
+        const unit = document.getElementById('ps-unit-inflowLevel');
+        if (line) { line.setAttribute('y1', inflowY); line.setAttribute('y2', inflowY); }
+        if (lbl)  lbl.setAttribute('y', inflowY - 4);
+        if (sub)  sub.setAttribute('y', inflowY + 8);
+        if (fo)   fo.setAttribute('y', inflowY - 11);
+        if (unit) unit.setAttribute('y', inflowY + 4);
+      }
+
+      const outflowItem = items.find(it => it.id === 'outflowLevel');
+      const deadvol    = document.getElementById('ps-deadvol');
+      if (deadvol && outflowItem) {
+        deadvol.setAttribute('y', outflowItem.y);
+        deadvol.setAttribute('height', Math.max(0, DIAG.botY - outflowItem.y));
+      }
+
+      // SVG labels — keep them short, side panel shows the numeric value.
+      const dryLbl = document.getElementById('ps-label-dryRunLevel');
+      if (dryLbl) dryLbl.textContent = 'dryRunLevel';
+      const highLbl = document.getElementById('ps-label-highVolumeSafetyLevel');
+      if (highLbl) highLbl.textContent = 'highVolumeSafety';
+
+      // Side-panel read-only displays — number only ("m" is shown in the unit span).
+      const fmt = (v) => Number.isFinite(v) ? v.toFixed(2) : '—';
+      const d1 = document.getElementById('derived-dryRunLevel');
+      if (d1) d1.textContent = fmt(dryLvl);
+      const d2 = document.getElementById('derived-highVolumeSafetyLevel');
+      if (d2) d2.textContent = fmt(highLvl);
+
+      // Hierarchy validation. Soft '≤' relations follow the user's choice:
+      // start ≤ inflow, max ≤ overflow, overflow ≤ basinHeight (equality OK).
+      // dryRunLevel must be < startLevel strictly (otherwise the runtime
+      // would trip dry-run before it could ramp).
+      // Re-read the raw value (basinH falls back to 5 for diagram scaling;
+      // here we want null when the user hasn't entered anything so the
+      // ≤-checks below are skipped rather than false-flagged).
+      const basinHraw = fNum('basinHeight');
+      const start = fNum('startLevel');
+      const hold  = fNum('holdLevel');
+      const inlet = fNum('inflowLevel');
+      const max   = fNum('maxLevel');
+      const ovfl  = fNum('overflowLevel');
+      const issues = [];
+      const ok = (a, b, op) => {
+        if (!Number.isFinite(a) || !Number.isFinite(b)) return true;
+        return op === '<' ? a < b : a <= b;
+      };
+      if (Number.isFinite(refLow) && refLow <= 0)
+        issues.push('outflowLevel must be > 0');
+      if (!ok(dryLvl, start, '<'))
+        issues.push(`dryRunLevel (${(dryLvl ?? NaN).toFixed(2)} m, derived) must be < startLevel — lower dryRun% or raise startLevel`);
+      if (!ok(start, max, '<'))
+        issues.push('startLevel must be < maxLevel');
+      if (!ok(start, hold, '<='))
+        issues.push('holdLevel must be ≥ startLevel (use startLevel for no hold band)');
+      if (!ok(hold, max, '<'))
+        issues.push('holdLevel must be < maxLevel');
+      if (!ok(inlet, max, '<='))
+        issues.push('inflowLevel must be ≤ maxLevel');
+      if (!ok(max, ovfl, '<='))
+        issues.push('maxLevel must be ≤ overflowLevel');
+      if (!ok(ovfl, basinHraw, '<='))
+        issues.push('overflowLevel must be ≤ basinHeight');
+
+      // Visible ribbon above the basin diagram.
+      const warnDiv = document.getElementById('ps-basin-validation');
+      if (warnDiv) {
+        if (issues.length) {
+          warnDiv.innerHTML = '⚠ Fix before deploy:<ul style="margin:4px 0 0 18px;padding:0;">'
+            + issues.map((i) => `<li>${i}</li>`).join('') + '</ul>';
+          warnDiv.style.display = '';
+        } else {
+          warnDiv.style.display = 'none';
+        }
+      }
+      // Legacy in-SVG warning text — kept for the small reminder inside
+      // the diagram. Only shows the count.
+      const warn = document.getElementById('ps-warning');
+      if (warn) {
+        if (issues.length) {
+          warn.setAttribute('visibility', 'visible');
+          warn.textContent = `⚠ ${issues.length} ordering issue${issues.length > 1 ? 's' : ''}`;
+        } else {
+          warn.setAttribute('visibility', 'hidden');
+        }
+      }
+      window._psBasinValidationIssues = issues;
+    },
+  };
+})();

src/editor/bounds.js

@@ -0,0 +1,110 @@
+// PumpingStation editor — dynamic input bounds.
+// Sets HTML5 min/max attributes on every level and percent input based on
+// the current values of related inputs, so the up/down arrows stop at
+// values that respect the basin hierarchy:
+//
+//   0 < outflowLevel < dryRunLevel < startLevel < maxLevel ≤ overflowLevel ≤ basinHeight
+//   0 < outflowLevel < inflowLevel < overflowLevel ≤ basinHeight
+//
+// startLevel is intentionally NOT clamped against inflowLevel: pushing
+// startLevel above the gravity-feed inlet is the "buffer in the sewer"
+// configuration where upstream pipe storage absorbs flow before pumping
+// engages. The level-based ramp foot is max(startLevel, inflowLevel) so
+// either ordering is valid.
+//
+// The user can still type out-of-range values via the keyboard (HTML5
+// min/max only constrain the spinner). The validation ribbons in
+// basin-diagram.js and mode-preview.js catch typed violations and the
+// oneditsave handler blocks Deploy until they're resolved.
+
+(function () {
+  const ns = window.PSEditor = window.PSEditor || {};
+  const fNum = (id) => ns.fNum(id);
+  const EPS = 0.001; // smallest meaningful step (mm-precision)
+
+  const setBounds = (id, min, max) => {
+    const el = document.getElementById(`node-input-${id}`);
+    if (!el) return;
+    if (Number.isFinite(min)) el.setAttribute('min', String(min));
+    else el.removeAttribute('min');
+    if (Number.isFinite(max)) el.setAttribute('max', String(max));
+    else el.removeAttribute('max');
+  };
+
+  ns.bounds = {
+    apply() {
+      const basinHeight = fNum('basinHeight');
+      const outflow     = fNum('outflowLevel');
+      const dryPct      = fNum('dryRunThresholdPercent');
+      const start       = fNum('startLevel');
+      const inlet       = fNum('inflowLevel');
+      const max         = fNum('maxLevel');
+      const overflow    = fNum('overflowLevel');
+      const shiftEnabled = !!document.getElementById('node-input-enableShiftedRamp')?.checked;
+
+      // Derived dryRunLevel (lower bound for startLevel).
+      const dryRun = (Number.isFinite(outflow) && Number.isFinite(dryPct))
+        ? outflow * (1 + dryPct / 100) : null;
+
+      // Geometry — basin envelope.
+      setBounds('basinHeight',   EPS, undefined);
+      setBounds('basinVolume',   EPS, undefined);
+
+      // Levels (each capped by the next-higher level if defined).
+      setBounds('outflowLevel',  EPS,
+        Number.isFinite(start) && Number.isFinite(dryPct)
+          ? start / (1 + dryPct / 100) - EPS  // keep dryRun < start
+          : (start ?? inlet ?? max ?? overflow ?? basinHeight));
+
+      setBounds('startLevel',
+        Number.isFinite(dryRun) ? dryRun + EPS : EPS,
+        max ?? overflow ?? basinHeight);
+
+      setBounds('inflowLevel',
+        EPS,
+        max ?? overflow ?? basinHeight);
+
+      setBounds('maxLevel',
+        inlet ?? start ?? EPS,
+        overflow ?? basinHeight);
+
+      setBounds('overflowLevel',
+        max ?? inlet ?? start ?? EPS,
+        basinHeight);
+
+      // stopLevel — explicit pump-off threshold. Must sit between
+      // dryRunLevel and startLevel (so it can be reached during draining
+      // before pumps re-engage).
+      setBounds('stopLevel',
+        Number.isFinite(dryRun) ? dryRun + EPS : EPS,
+        start ?? inlet ?? max ?? overflow ?? basinHeight);
+
+      // holdLevel — 0 % ramp foot. Defaults to startLevel (no hold band);
+      // when raised above startLevel, pumps engage at startLevel but emit
+      // 0 % across [startLevel, holdLevel] before the ramp begins. Bounds:
+      // startLevel ≤ holdLevel < maxLevel.
+      setBounds('holdLevel',
+        Number.isFinite(start) ? start : EPS,
+        max ?? overflow ?? basinHeight);
+
+      // Shift inputs (only relevant when shifted ramp enabled).
+      if (shiftEnabled) {
+        setBounds('shiftLevel',
+          Number.isFinite(start) ? start : EPS,
+          max ?? overflow ?? basinHeight);
+        setBounds('shiftArmPercent', 1, 100);
+      }
+
+      // Percentages.
+      // dryRun% capped so dryRunLevel ≤ startLevel.
+      let dryMax = 99;
+      if (Number.isFinite(start) && Number.isFinite(outflow) && outflow > 0) {
+        dryMax = Math.max(0, Math.min(99, ((start / outflow) - 1) * 100));
+      }
+      setBounds('dryRunThresholdPercent', 0, dryMax);
+
+      // highVol% bounded (1, 100). Equal to 100 means no margin to overflow.
+      setBounds('highVolumeSafetyThresholdPercent', 1, 100);
+    },
+  };
+})();

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);
+        }
+      });
+    },
+  };
+})();

src/editor/index.js

@@ -0,0 +1,33 @@
+// PumpingStation editor — shared namespace + helpers.
+// Loaded first by pumpingStation.html via /pumpingStation/editor/index.js.
+// Each sibling module attaches additional members to window.PSEditor.
+
+(function () {
+  const ns = window.PSEditor = window.PSEditor || {};
+
+  // Read a numeric value from an input by node-input-<id>; null if blank/NaN.
+  ns.fNum = (id) => {
+    const v = parseFloat(document.getElementById(`node-input-${id}`)?.value);
+    return Number.isFinite(v) ? v : null;
+  };
+
+  // Set a numeric input's value, or blank if not finite. Accepts numeric
+  // strings (Node-RED's auto-form-binding stores form values as strings).
+  ns.setNumberField = (id, val) => {
+    const el = document.getElementById(id);
+    if (!el) return;
+    const num = typeof val === 'number' ? val : parseFloat(val);
+    el.value = Number.isFinite(num) ? num : '';
+  };
+
+  // Add input + change listeners to a list of node-input-* ids.
+  ns.bindRedraw = (ids, handler) => {
+    ids.forEach((id) => {
+      const el = document.getElementById(`node-input-${id}`);
+      if (el) {
+        el.addEventListener('input', handler);
+        el.addEventListener('change', handler);
+      }
+    });
+  };
+})();

src/editor/mode-preview.js

@@ -0,0 +1,295 @@
+// PumpingStation editor — level-based mode preview SVG.
+// Draws zone bands, level markers, the up curve (inflowLevel→maxLevel) and
+// the optional shifted-down curve (startLevel→shiftLevel). Computes
+// validation issues and stashes them on window._psModeValidationIssues
+// for oneditsave to read.
+
+(function () {
+  const ns = window.PSEditor = window.PSEditor || {};
+  const fNum = (id) => ns.fNum(id);
+
+  // Derive dryRunLevel the same way the basin diagram does.
+  // dryRunLevel = outflowLevel × (1 + dryRunThresholdPercent/100).
+  // Returns null if either input is missing.
+  ns.deriveDryRunLevel = () => {
+    const refLow = fNum('outflowLevel');
+    const dryPct = fNum('dryRunThresholdPercent');
+    if (refLow == null || dryPct == null) return null;
+    return refLow * (1 + dryPct / 100);
+  };
+
+  ns.modePreview = {
+    redraw() {
+      const svg = document.getElementById('ps-levelbased-mode-diagram');
+      if (!svg) return;
+      const start = fNum('startLevel');
+      const hold  = fNum('holdLevel');
+      const inlet = fNum('inflowLevel');
+      const max = fNum('maxLevel');
+      // Optional stopLevel — explicit pump-off threshold. Drawn as its
+      // own marker line; does NOT shift the ramp foot. Renders as long as
+      // the typed value is a non-negative number — the start-vs-stop
+      // ordering check belongs to the validation ribbon, not the visual
+      // marker (otherwise the line vanishes while the user is mid-edit).
+      const stopRaw = fNum('stopLevel');
+      const stop = Number.isFinite(stopRaw) && stopRaw >= 0 ? stopRaw : null;
+      // dryRunLevel is derived from the basin's outflowLevel + dryRun%
+      // (no separate input). Below dryRunLevel the runtime hard-stops;
+      // we draw it as the leftmost vertical marker so the user sees
+      // exactly where it lands.
+      const dryRun = ns.deriveDryRunLevel();
+      const overflow = fNum('overflowLevel');
+      const shiftEnabled = !!document.getElementById('node-input-enableShiftedRamp')?.checked;
+      const shiftRaw = fNum('shiftLevel');
+      const shift = Number.isFinite(shiftRaw) && shiftRaw > 0 ? Math.min(shiftRaw, max ?? shiftRaw) : null;
+      const armRaw = fNum('shiftArmPercent');
+      const armPct = Number.isFinite(armRaw) ? Math.max(0, Math.min(100, armRaw)) : 95;
+      const curveType = document.getElementById('node-input-levelCurveType')?.value || 'linear';
+      const factorRaw = parseFloat(document.getElementById('node-input-logCurveFactor')?.value);
+      const factor = Number.isFinite(factorRaw) && factorRaw > 0 ? factorRaw : 9;
+
+      // Plot window is FIXED relative to basin geometry so that moving any
+      // single level slides only that line, not all the others. Lower bound
+      // is the basin floor (0); upper bound is overflowLevel (or maxLevel
+      // if overflow isn't set) plus a small margin.
+      const upperRefs = [max, overflow].filter(Number.isFinite);
+      const upperBase = upperRefs.length ? Math.max(...upperRefs) : 1;
+      const pad = Math.max(upperBase * 0.05, 0.1);
+      const levelMin = 0;
+      const levelMax = upperBase + pad;
+
+      // Plot rectangle (viewBox px).
+      const x0 = 52, x1 = 390, y0 = 140, y1 = 24;
+      const yOffPx = 160;
+      const yOffPct = -((yOffPx - y0) / (y0 - y1)) * 100;
+      const xFor = (level) => x0 + ((level - levelMin) / (levelMax - levelMin)) * (x1 - x0);
+      const yForPct = (pct) => y0 - (pct / 100) * (y0 - y1);
+      const scale = (x) => {
+        const clamped = Math.max(0, Math.min(1, x));
+        if (curveType === 'log') return Math.log1p(factor * clamped) / Math.log1p(factor);
+        return clamped;
+      };
+
+      // Path with three flat regions and a ramp:
+      //   [levelMin..startX]    OFF   (pump off; below startLevel)
+      //   [startX..footX]       0 %   (system armed but not yet ramping)
+      //   [footX..topX]         ramp  (linear or log scaled 0..100 %)
+      //   [topX..levelMax]      100 % (saturated)
+      // Up curve: startX=startLevel, footX=inflowLevel, topX=maxLevel.
+      // Shifted-down: startX=footX=startLevel, topX=shiftLevel.
+      const buildPath = (startX, footX, topX) => {
+        if (![startX, footX, topX].every(Number.isFinite) || topX <= footX) return '';
+        const pts = [];
+        pts.push(`${xFor(levelMin)},${yForPct(yOffPct)}`);
+        pts.push(`${xFor(startX)},${yForPct(yOffPct)}`);
+        pts.push(`${xFor(startX)},${yForPct(0)}`);
+        if (footX > startX) pts.push(`${xFor(footX)},${yForPct(0)}`);
+        for (let i = 0; i <= 24; i++) {
+          const t = i / 24;
+          const level = footX + t * (topX - footX);
+          pts.push(`${xFor(level)},${yForPct(scale(t) * 100)}`);
+        }
+        pts.push(`${xFor(levelMax)},${yForPct(100)}`);
+        return pts.join(' ');
+      };
+
+      // Up curve. Engagement edge is startLevel (pump-on threshold); the
+      // ramp foot is holdLevel, with a Math.max(startLevel, …) safety
+      // floor — matching the runtime in levelBased.run.
+      //   - holdLevel == startLevel (default): no hold band, 0..100 % across
+      //     [startLevel, maxLevel].
+      //   - holdLevel > startLevel: pumps engaged across [startLevel,
+      //     holdLevel] at 0 % (= MGC flow.min), then 0..100 % across
+      //     [holdLevel, maxLevel].
+      const up = document.getElementById('ps-mode-curve-up');
+      const down = document.getElementById('ps-mode-curve-down');
+      const downLabel = document.getElementById('ps-mode-curve-down-label');
+      const upFoot = Number.isFinite(hold) && hold > start ? hold : start;
+      if (up) up.setAttribute('points', buildPath(start, upFoot, max));
+
+      // Shifted-DOWN curve (only when shift enabled): represents the
+      // worst-case held-then-ramp path drawn for hold=100 % (the SVG
+      // ideal). Geometry: 100 % flat from levelMax back to shiftLevel,
+      // then linear/log ramp from (shiftLevel, 100 %) down to
+      // (startLevel, 0 %), then OFF below startLevel.
+      // Real runtime hold value depends on where direction flips, so the
+      // preview shows the maximum extent.
+      const buildShiftedDown = () => {
+        if (![start, shift].every(Number.isFinite) || shift <= start) return '';
+        const pts = [];
+        // OFF baseline far-left to startLevel
+        pts.push(`${xFor(levelMin)},${yForPct(yOffPct)}`);
+        pts.push(`${xFor(start)},${yForPct(yOffPct)}`);
+        // Jump 0 % at startLevel
+        pts.push(`${xFor(start)},${yForPct(0)}`);
+        // Ramp start→shift = 0..100 % (peak hold = 100 % for this preview)
+        for (let i = 0; i <= 24; i++) {
+          const t = i / 24;
+          const lvl = start + t * (shift - start);
+          pts.push(`${xFor(lvl)},${yForPct(scale(t) * 100)}`);
+        }
+        // Held at 100 % from shift → far-right
+        pts.push(`${xFor(levelMax)},${yForPct(100)}`);
+        return pts.join(' ');
+      };
+      if (down) {
+        if (shiftEnabled) {
+          down.setAttribute('points', buildShiftedDown());
+          down.style.display = '';
+          if (downLabel) downLabel.style.display = '';
+        } else {
+          down.setAttribute('points', '');
+          down.style.display = 'none';
+          if (downLabel) downLabel.style.display = 'none';
+        }
+      }
+
+      // Horizontal arming-% line — only meaningful when shift enabled.
+      const armLine = document.getElementById('ps-mode-line-armPercent');
+      const armLabel = document.getElementById('ps-mode-label-armPercent');
+      if (armLine && armLabel) {
+        if (shiftEnabled) {
+          const yArm = yForPct(armPct);
+          armLine.setAttribute('y1', yArm);
+          armLine.setAttribute('y2', yArm);
+          armLabel.setAttribute('y', yArm - 2);
+          armLabel.textContent = `arm ${Math.round(armPct)}%`;
+          armLine.style.display = '';
+          armLabel.style.display = '';
+        } else {
+          armLine.style.display = 'none';
+          armLabel.style.display = 'none';
+        }
+      }
+
+      // Vertical level markers — line only. Axis labels were removed;
+      // identification comes from line colour + side-panel labels +
+      // hover coupling.
+      [
+        ['dryRunLevel', dryRun],
+        ['startLevel', start],
+        ['stopLevel', stop],
+        ['holdLevel', hold],
+        ['inflowLevel', inlet],
+        ['maxLevel', max],
+        ['overflowLevel', overflow],
+      ].forEach(([id, level]) => {
+        const line = document.getElementById(`ps-mode-line-${id}`);
+        if (!line) return;
+        if (!Number.isFinite(level)) {
+          line.style.display = 'none';
+          return;
+        }
+        const x = xFor(level);
+        line.style.display = '';
+        line.setAttribute('x1', x); line.setAttribute('x2', x);
+      });
+
+      // Background zone bands.
+      const plotL = xFor(levelMin);
+      const plotR = xFor(levelMax);
+      const setBand = (id, a, b) => {
+        const r = document.getElementById(id);
+        if (!r) return;
+        if (!Number.isFinite(a) || !Number.isFinite(b) || b <= a) {
+          r.setAttribute('x', 0); r.setAttribute('width', 0);
+          return;
+        }
+        r.setAttribute('x', a);
+        r.setAttribute('width', b - a);
+      };
+      const xMin   = Number.isFinite(dryRun)   ? xFor(dryRun)   : plotL;
+      const xStart = Number.isFinite(start)    ? xFor(start)    : xMin;
+      const xMax   = Number.isFinite(max)      ? xFor(max)      : plotR;
+      const xOvf   = Number.isFinite(overflow) ? xFor(overflow) : xMax;
+      setBand('ps-zone-dryRun',     plotL, xMin);
+      setBand('ps-zone-safetyLow',  xMin,  xStart);
+      setBand('ps-zone-safe',       xStart, xMax);
+      setBand('ps-zone-safetyHigh', xMax,  xOvf);
+      setBand('ps-zone-overflow',   xOvf,  plotR);
+
+      // Shift level marker (line only).
+      const shiftLine = document.getElementById('ps-mode-line-shiftLevel');
+      if (shiftLine) {
+        if (shiftEnabled && Number.isFinite(shift)) {
+          const x = xFor(shift);
+          shiftLine.setAttribute('x1', x); shiftLine.setAttribute('x2', x);
+          shiftLine.style.display = '';
+        } else {
+          shiftLine.style.display = 'none';
+        }
+      }
+
+      // Title + row visibility.
+      const curveLabel = document.getElementById('ps-mode-curve-label');
+      if (curveLabel) curveLabel.textContent = curveType === 'log' ? 'log curve: fast early response' : 'linear curve';
+      const shiftRow = document.getElementById('ps-shiftLevel-row');
+      if (shiftRow) shiftRow.style.display = shiftEnabled ? '' : 'none';
+      const armRow = document.getElementById('ps-shiftArmPercent-row');
+      if (armRow) armRow.style.display = shiftEnabled ? '' : 'none';
+      const logRow = document.getElementById('ps-log-factor-row');
+      if (logRow) logRow.style.display = curveType === 'log' ? '' : 'none';
+
+      // Auto-default shiftLevel when shift is enabled and current value
+      // is missing/out-of-range. Visible default avoids a hidden ramp.
+      const shiftInput = document.getElementById('node-input-shiftLevel');
+      if (shiftEnabled && shiftInput && Number.isFinite(max)) {
+        const cur = parseFloat(shiftInput.value);
+        if (!Number.isFinite(cur) || cur <= 0 || cur >= max) {
+          shiftInput.value = (max * 0.9).toFixed(2);
+        }
+      }
+      // Auto-default shiftArmPercent to 95 % when shift is enabled and the
+      // current value is missing / out of [0, 100].
+      const armInput = document.getElementById('node-input-shiftArmPercent');
+      if (shiftEnabled && armInput) {
+        const cur = parseFloat(armInput.value);
+        if (!Number.isFinite(cur) || cur < 0 || cur > 100) {
+          armInput.value = 95;
+        }
+      }
+
+      // Validation: only mode-specific (shift) ordering. Basin-level
+      // hierarchy (start ≤ inlet ≤ max ≤ overflow ≤ basinHeight,
+      // dryRun < start) is owned by basin-diagram.js so it shows in the
+      // basin section near the offending inputs.
+      const issues = [];
+      if (shiftEnabled) {
+        const shiftVal = Number(shiftInput?.value);
+        if (Number.isFinite(shiftVal)) {
+          if (Number.isFinite(start) && shiftVal <= start)
+            issues.push('shiftLevel must be > startLevel');
+          if (Number.isFinite(max) && shiftVal > max)
+            issues.push('shiftLevel must be ≤ maxLevel');
+        } else {
+          issues.push('shiftLevel is required when shifted ramp is enabled');
+        }
+        const armVal = Number(armInput?.value);
+        if (!Number.isFinite(armVal) || armVal <= 0 || armVal > 100)
+          issues.push('shiftArmPercent must be in (0, 100]');
+      }
+      const warnBox = document.getElementById('ps-mode-validation');
+      if (warnBox) {
+        if (issues.length) {
+          warnBox.innerHTML = '⚠ Fix before deploy:<ul style="margin:4px 0 0 18px;padding:0;">'
+            + issues.map((i) => `<li>${i}</li>`).join('') + '</ul>';
+          warnBox.style.display = '';
+        } else {
+          warnBox.style.display = 'none';
+        }
+      }
+      window._psModeValidationIssues = issues;
+
+      // Read-only readouts in the side panel — number only; the row's
+      // .ps-unit span already shows "m".
+      const fmt = (v) => Number.isFinite(v) ? v.toFixed(2) : '—';
+      const setText = (id, val) => {
+        const el = document.getElementById(id);
+        if (el) el.textContent = fmt(val);
+      };
+      setText('ps-mode-readout-dryRun',   dryRun);
+      setText('ps-mode-readout-inflow',   inlet);
+      setText('ps-mode-readout-overflow', overflow);
+    },
+  };
+})();

src/editor/oneditprepare.js

@@ -0,0 +1,131 @@
+// PumpingStation editor — oneditprepare entry. Wires up form-field
+// initialization, control-mode toggle, safety toggles, and binds
+// redraws for the basin diagram + level-based mode preview.
+
+(function () {
+  const ns = window.PSEditor = window.PSEditor || {};
+
+  ns.oneditprepare = function () {
+    const node = this;
+
+    // Wait for menu data (asset/logger/position dropdowns) before init.
+    const waitForMenuData = () => {
+      if (window.EVOLV?.nodes?.pumpingStation?.initEditor) {
+        window.EVOLV.nodes.pumpingStation.initEditor(node);
+      } else {
+        setTimeout(waitForMenuData, 50);
+      }
+    };
+    waitForMenuData();
+
+    const refHeightEl = document.getElementById('node-input-refHeight');
+    if (refHeightEl) refHeightEl.value = node.refHeight || 'NAP';
+
+    // Safety toggle pairs — each toggle enables/disables its threshold input.
+    const dryRunToggle    = document.getElementById('node-input-enableDryRunProtection');
+    const dryRunPercent   = document.getElementById('node-input-dryRunThresholdPercent');
+    const highVolumeToggle  = document.getElementById('node-input-enableHighVolumeSafety');
+    const highVolumePercent = document.getElementById('node-input-highVolumeSafetyThresholdPercent');
+
+    const toggleInput = (toggleEl, inputEl) => {
+      if (!toggleEl || !inputEl) return;
+      inputEl.disabled = !toggleEl.checked;
+      inputEl.parentElement.classList.toggle('disabled', inputEl.disabled);
+    };
+
+    if (dryRunToggle && dryRunPercent) {
+      dryRunToggle.checked = !!node.enableDryRunProtection;
+      dryRunPercent.value = Number.isFinite(node.dryRunThresholdPercent) ? node.dryRunThresholdPercent : 2;
+      dryRunToggle.addEventListener('change', () => toggleInput(dryRunToggle, dryRunPercent));
+      toggleInput(dryRunToggle, dryRunPercent);
+    }
+
+    if (highVolumeToggle && highVolumePercent) {
+      highVolumeToggle.checked = node.enableHighVolumeSafety !== undefined
+        ? !!node.enableHighVolumeSafety
+        : !!node.enableOverfillProtection;
+      const highVolumePct = node.highVolumeSafetyThresholdPercent ?? node.overfillThresholdPercent;
+      highVolumePercent.value = Number.isFinite(highVolumePct) ? highVolumePct : 98;
+      highVolumeToggle.addEventListener('change', () => toggleInput(highVolumeToggle, highVolumePercent));
+      toggleInput(highVolumeToggle, highVolumePercent);
+    }
+
+    // Control-mode section toggle (levelbased / manual).
+    const toggleModeSections = (val) => {
+      document.querySelectorAll('.ps-mode-section').forEach((el) => el.style.display = 'none');
+      const active = document.getElementById(`ps-mode-${val}`);
+      if (active) active.style.display = '';
+    };
+    const modeSelect = document.getElementById('node-input-controlMode');
+    if (modeSelect) {
+      modeSelect.value = node.controlMode === 'manual' ? 'manual' : 'levelbased';
+      toggleModeSections(modeSelect.value);
+      modeSelect.addEventListener('change', (e) => toggleModeSections(e.target.value));
+    }
+
+    // Numeric field defaults.
+    ns.setNumberField('node-input-startLevel',     node.startLevel);
+    ns.setNumberField('node-input-stopLevel',      node.stopLevel);
+    // holdLevel defaults to startLevel when omitted (no hold band). Show
+    // the saved value if there is one; otherwise mirror startLevel so the
+    // user immediately sees the "no hold band" baseline. Coerce to Number
+    // because Node-RED form-bind stores numeric inputs as strings.
+    const holdNum = parseFloat(node.holdLevel);
+    ns.setNumberField('node-input-holdLevel',
+      Number.isFinite(holdNum) ? holdNum : node.startLevel);
+    const deadZoneNum = parseFloat(node.deadZoneKeepAlivePercent);
+    ns.setNumberField('node-input-deadZoneKeepAlivePercent',
+      Number.isFinite(deadZoneNum) ? deadZoneNum : 1);
+    ns.setNumberField('node-input-maxLevel',       node.maxLevel);
+    ns.setNumberField('node-input-logCurveFactor', node.logCurveFactor);
+    ns.setNumberField('node-input-shiftLevel',     node.shiftLevel);
+    ns.setNumberField('node-input-shiftArmPercent', Number.isFinite(node.shiftArmPercent) ? node.shiftArmPercent : 95);
+    ns.setNumberField('node-input-flowSetpoint',   node.flowSetpoint);
+    ns.setNumberField('node-input-flowDeadband',   node.flowDeadband);
+
+    const curveSelect = document.getElementById('node-input-levelCurveType');
+    if (curveSelect) curveSelect.value = node.levelCurveType || node.curveType || 'linear';
+    const shiftCheckbox = document.getElementById('node-input-enableShiftedRamp');
+    if (shiftCheckbox) shiftCheckbox.checked = !!node.enableShiftedRamp;
+
+    // Bind redraws to the inputs each diagram cares about. The basin
+    // diagram itself only paints inflow/outflow/overflow lines, but its
+    // validation ribbon also enforces startLevel/holdLevel/maxLevel
+    // ordering — so it has to refire when any of those change too, or
+    // the "Fix before deploy" ribbon goes stale mid-edit.
+    ns.bindRedraw(
+      ['basinHeight', 'overflowLevel', 'inflowLevel', 'outflowLevel',
+       'startLevel', 'stopLevel', 'holdLevel', 'maxLevel',
+       'dryRunThresholdPercent', 'highVolumeSafetyThresholdPercent'],
+      ns.basinDiagram.redraw
+    );
+    ns.bindRedraw(
+      // dryRunLevel is derived (outflowLevel + dryRunThresholdPercent),
+      // so the mode preview must redraw when either of those change.
+      ['startLevel', 'stopLevel', 'holdLevel', 'maxLevel',
+       'inflowLevel', 'outflowLevel', 'overflowLevel',
+       'dryRunThresholdPercent',
+       'levelCurveType', 'logCurveFactor', 'enableShiftedRamp', 'shiftLevel',
+       'shiftArmPercent'],
+      ns.modePreview.redraw
+    );
+
+    // Whenever any level/percent input changes, refresh the bounds first
+    // so the next redraw + validation sees the correct min/max attrs.
+    ns.bindRedraw(
+      ['basinHeight', 'basinVolume', 'overflowLevel', 'maxLevel',
+       'inflowLevel', 'startLevel', 'stopLevel', 'holdLevel', 'outflowLevel',
+       'dryRunThresholdPercent', 'highVolumeSafetyThresholdPercent',
+       'enableShiftedRamp', 'shiftLevel', 'shiftArmPercent'],
+      () => ns.bounds?.apply()
+    );
+
+    // Initial render + hover-couple wiring once the DOM is settled.
+    setTimeout(() => {
+      ns.bounds?.apply();
+      ns.basinDiagram.redraw();
+      ns.modePreview.redraw();
+      ns.hoverCouple?.init();
+    }, 60);
+  };
+})();

src/editor/oneditsave.js

@@ -0,0 +1,78 @@
+// PumpingStation editor — oneditsave handler. Validates, saves shared
+// menu sections (logger/position), then persists pumpingStation-specific
+// fields onto the node. Throws if validation fails to keep the editor open.
+
+(function () {
+  const ns = window.PSEditor = window.PSEditor || {};
+
+  const parseNum = (id) => parseFloat(document.getElementById(id)?.value);
+
+  ns.oneditsave = function () {
+    const node = this;
+
+    // Block save if EITHER validator surfaced any issues. basin-diagram
+    // owns hierarchy issues (start ≤ inlet ≤ max ≤ overflow ≤ basinHeight,
+    // dryRun < start). mode-preview owns shift-specific issues.
+    const basinIssues = window._psBasinValidationIssues || [];
+    const modeIssues  = window._psModeValidationIssues  || [];
+    const issues = [...basinIssues, ...modeIssues];
+    if (issues.length) {
+      if (typeof RED !== 'undefined' && RED.notify) {
+        RED.notify('PumpingStation config invalid:<br>• ' + issues.join('<br>• '),
+          { type: 'error', timeout: 6000 });
+      }
+      throw new Error('PumpingStation: invalid config — ' + issues.join('; '));
+    }
+
+    window.EVOLV?.nodes?.pumpingStation?.loggerMenu?.saveEditor?.(node);
+    window.EVOLV?.nodes?.pumpingStation?.positionMenu?.saveEditor?.(node);
+
+    node.refHeight = document.getElementById('node-input-refHeight').value || 'NAP';
+    node.simulator = document.getElementById('node-input-simulator').checked;
+
+    [
+      'basinVolume', 'basinHeight', 'inflowLevel', 'outflowLevel', 'overflowLevel',
+      'basinBottomRef',
+      'dryRunThresholdPercent', 'highVolumeSafetyThresholdPercent',
+    ].forEach((field) => {
+      const el = document.getElementById(`node-input-${field}`);
+      if (el) node[field] = parseFloat(el.value) || 0;
+    });
+
+    node.enableDryRunProtection = document.getElementById('node-input-enableDryRunProtection').checked;
+    node.enableHighVolumeSafety = document.getElementById('node-input-enableHighVolumeSafety').checked;
+    // Deprecated aliases kept for existing runtime/schema compatibility.
+    node.enableOverfillProtection = node.enableHighVolumeSafety;
+    node.overfillThresholdPercent = node.highVolumeSafetyThresholdPercent;
+
+    node.controlMode = document.getElementById('node-input-controlMode').value || 'levelbased';
+    node.levelCurveType = document.getElementById('node-input-levelCurveType')?.value || 'linear';
+    node.logCurveFactor = parseNum('node-input-logCurveFactor');
+    node.startLevel = parseNum('node-input-startLevel');
+    node.maxLevel = parseNum('node-input-maxLevel');
+    // Persist as numbers — Node-RED's auto-form-binding would store these as
+    // strings, and oneditprepare's setNumberField rejects non-Number values,
+    // so the input would blank out on reopen.
+    const stopLevelVal = parseNum('node-input-stopLevel');
+    node.stopLevel = Number.isFinite(stopLevelVal) ? stopLevelVal : null;
+    const holdLevelVal = parseNum('node-input-holdLevel');
+    if (Number.isFinite(holdLevelVal)) node.holdLevel = holdLevelVal;
+    const deadZoneVal = parseNum('node-input-deadZoneKeepAlivePercent');
+    if (Number.isFinite(deadZoneVal)) node.deadZoneKeepAlivePercent = deadZoneVal;
+    // minLevel is no longer a user input — it's the derived dryRunLevel
+    // (outflowLevel × (1 + dryRunThresholdPercent/100)). The runtime still
+    // uses node.minLevel as the unconditional STOP threshold; we set it
+    // here so that semantic survives the UI change.
+    const _dryRun = ns.deriveDryRunLevel?.();
+    if (Number.isFinite(_dryRun)) node.minLevel = _dryRun;
+    node.enableShiftedRamp = !!document.getElementById('node-input-enableShiftedRamp')?.checked;
+    const shiftLevelVal = parseNum('node-input-shiftLevel');
+    node.shiftLevel = Number.isFinite(shiftLevelVal) ? shiftLevelVal : 0;
+    const armPctVal = parseNum('node-input-shiftArmPercent');
+    node.shiftArmPercent = Number.isFinite(armPctVal) ? armPctVal : 95;
+    const flowSetpoint = parseNum('node-input-flowSetpoint');
+    const flowDeadband = parseNum('node-input-flowDeadband');
+    if (Number.isFinite(flowSetpoint)) node.flowSetpoint = flowSetpoint;
+    if (Number.isFinite(flowDeadband)) node.flowDeadband = flowDeadband;
+  };
+})();

src/measurement/calibration.js

@@ -0,0 +1,91 @@
+// Calibration helpers for the pumping-station predicted volume / level
+// streams. Pure functions over a context bag holding the live
+// MeasurementContainer + basin geometry. After every calibration the
+// integrator state is reset so the next tick starts from the new anchor.
+
+function _resetFlowState(ctx, timestamp) {
+  if (ctx.flowAggregator?.resetState) {
+    ctx.flowAggregator.resetState(timestamp);
+    return;
+  }
+  ctx._predictedFlowState = { inflow: 0, outflow: 0, lastTimestamp: timestamp };
+}
+
+function _clearSeries(measurements, type) {
+  const series = measurements.type(type).variant('predicted').position('atequipment');
+  if (series.exists()) {
+    const m = series.get();
+    if (m) {
+      m.values = [];
+      m.timestamps = [];
+    }
+  }
+}
+
+function _levelFromVolume(basin, volume) {
+  const area = basin.surfaceArea;
+  return area > 0 ? Math.max(volume, 0) / area : 0;
+}
+
+function _volumeFromLevel(basin, level) {
+  const area = basin.surfaceArea;
+  return area > 0 ? Math.max(level, 0) * area : 0;
+}
+
+function calibratePredictedVolume(ctx, calibratedVol, timestamp = Date.now()) {
+  if (!ctx?.measurements || !ctx.basin) {
+    throw new Error('calibratePredictedVolume: ctx.measurements and ctx.basin required');
+  }
+  const { measurements, basin } = ctx;
+
+  _clearSeries(measurements, 'volume');
+  _clearSeries(measurements, 'level');
+
+  measurements.type('volume').variant('predicted').position('atequipment')
+    .value(calibratedVol, timestamp, 'm3').unit('m3');
+  measurements.type('level').variant('predicted').position('atequipment')
+    .value(_levelFromVolume(basin, calibratedVol), timestamp, 'm');
+
+  _resetFlowState(ctx, timestamp);
+}
+
+function calibratePredictedLevel(ctx, level, timestamp = Date.now(), unit = 'm') {
+  if (!ctx?.measurements || !ctx.basin) {
+    throw new Error('calibratePredictedLevel: ctx.measurements and ctx.basin required');
+  }
+  const { measurements, basin } = ctx;
+
+  _clearSeries(measurements, 'volume');
+  _clearSeries(measurements, 'level');
+
+  measurements.type('level').variant('predicted').position('atequipment')
+    .value(level, timestamp, unit);
+  measurements.type('volume').variant('predicted').position('atequipment')
+    .value(_volumeFromLevel(basin, level), timestamp, 'm3');
+
+  _resetFlowState(ctx, timestamp);
+}
+
+function setManualInflow(ctx, value, timestamp = Date.now(), unit = 'm3/s') {
+  if (!ctx?.measurements) throw new Error('setManualInflow: ctx.measurements required');
+  const num = Number(value);
+  ctx.measurements.type('flow').variant('predicted').position('in').child('manual-qin')
+    .value(num, timestamp, unit);
+}
+
+// Manual outflow injection mirroring setManualInflow — basin-docs adds this
+// for the dashboard's q_out topic so tests can drive a drain stroke without
+// instantiating a real pump.
+function setManualOutflow(ctx, value, timestamp = Date.now(), unit = 'm3/s') {
+  if (!ctx?.measurements) throw new Error('setManualOutflow: ctx.measurements required');
+  const num = Number(value);
+  ctx.measurements.type('flow').variant('predicted').position('out').child('manual-qout')
+    .value(num, timestamp, unit);
+}
+
+module.exports = {
+  calibratePredictedVolume,
+  calibratePredictedLevel,
+  setManualInflow,
+  setManualOutflow,
+};

src/measurement/flowAggregator.js

@@ -0,0 +1,296 @@
+// FlowAggregator — owns the predicted-volume integrator + net-flow selection
+// + remaining-time projection for the pumping-station basin.
+//
+// Pure domain. Takes a context bag with the live MeasurementContainer, the
+// basin geometry, and the merged config; mutates measurements in place and
+// keeps a tiny piece of integrator state internally.
+//
+// Ports from basin-docs:
+//   - Predicted-volume integrator clamped to [dryRunSafetyVol, maxVolAtOverflow]
+//     with hard physical floor at 0 (predicted volume can never go negative).
+//   - Synthetic spill flow at position 'overflow' so net-flow balance
+//     reads ~0 while pinned at overflow.
+//   - Cumulative overflowVolume + underflowVolume streams for compliance /
+//     diagnostic reporting via InfluxDB.
+
+const { interpolation } = require('generalFunctions');
+
+const DEFAULT_FLOW_THRESHOLD = 1e-4;
+const DEFAULT_FLOW_VARIANTS = ['measured', 'predicted'];
+const DEFAULT_LEVEL_VARIANTS = ['measured', 'predicted'];
+const DEFAULT_FLOW_POSITIONS = {
+  inflow: ['in', 'upstream'],
+  outflow: ['out', 'downstream'],
+};
+
+class FlowAggregator {
+  constructor(ctx = {}) {
+    if (!ctx.measurements) throw new Error('FlowAggregator: ctx.measurements is required');
+    if (!ctx.basin) throw new Error('FlowAggregator: ctx.basin is required');
+
+    this.measurements = ctx.measurements;
+    this.basin = ctx.basin;
+    this.config = ctx.config || {};
+    this.logger = ctx.logger || null;
+    this._interp = ctx.interpolation || new interpolation();
+
+    this.flowVariants = ctx.flowVariants || DEFAULT_FLOW_VARIANTS;
+    this.levelVariants = ctx.levelVariants || DEFAULT_LEVEL_VARIANTS;
+    this.flowPositions = ctx.flowPositions || DEFAULT_FLOW_POSITIONS;
+
+    const cfgThresh = Number(this.config?.general?.flowThreshold);
+    this.flowThreshold = Number.isFinite(ctx.flowThreshold)
+      ? ctx.flowThreshold
+      : (Number.isFinite(cfgThresh) ? cfgThresh : DEFAULT_FLOW_THRESHOLD);
+
+    // Optional callback so the host can supply derived safety thresholds
+    // without us re-importing the validator. Returns { dryRunSafetyVol, ... }.
+    this._computeSafetyPoints = ctx.computeSafetyPoints || (() => ({ dryRunSafetyVol: 0 }));
+
+    this._predictedFlowState = null;
+    this._lastNetFlow = { value: 0, source: null, direction: 'steady' };
+    this._lastRemaining = { seconds: null, source: null };
+    this._lastLevelRateNetFlow = null;
+  }
+
+  resetState(timestamp = Date.now()) {
+    this._predictedFlowState = { inflow: 0, outflow: 0, lastTimestamp: timestamp };
+  }
+
+  // Pick the best-available variant for one side of the basin balance.
+  // Mirrors selectBestNetFlow's variant precedence (measured first, then
+  // predicted) but resolves each side independently — so a real measured
+  // upstream sensor + a predicted pump outflow both feed the integrator.
+  // Returns the summed flow at the requested positions. The first variant
+  // that has any registered measurement at one of those positions wins,
+  // even if its sum is 0 (a sensor that reads 0 is still data).
+  _pickFlowSum(positions, flowUnit = 'm3/s') {
+    const buckets = this.measurements.measurements?.flow;
+    if (!buckets) return { sum: 0, variant: null };
+    for (const variant of this.flowVariants) {
+      const variantBucket = buckets[variant];
+      if (!variantBucket) continue;
+      const hasAny = positions.some((pos) => {
+        const posBucket = variantBucket[pos];
+        return posBucket && Object.keys(posBucket).length > 0;
+      });
+      if (!hasAny) continue;
+      return {
+        sum: this.measurements.sum('flow', variant, positions, flowUnit) || 0,
+        variant,
+      };
+    }
+    return { sum: 0, variant: null };
+  }
+
+  update() {
+    const flowUnit = 'm3/s';
+    const now = Date.now();
+
+    // Synthetic spill flow lives at its OWN position ('overflow') —
+    // not as a child of 'out'. That keeps it out of the operational
+    // outflow sum here so no self-subtraction is needed.
+    // Inflow + outflow are resolved per-side: a real measured upstream
+    // sensor (variant=measured) + a predicted pump-curve outflow
+    // (variant=predicted) is the common realistic mix.
+    const inflowPick  = this._pickFlowSum(this.flowPositions.inflow,  flowUnit);
+    const outflowPick = this._pickFlowSum(this.flowPositions.outflow, flowUnit);
+    const inflow      = inflowPick.sum;
+    const outflowReal = outflowPick.sum;
+
+    if (!this._predictedFlowState) this._predictedFlowState = { inflow, outflow: outflowReal, lastTimestamp: now };
+
+    const tPrev = this._predictedFlowState.lastTimestamp ?? now;
+    const dt = Math.max((now - tPrev) / 1000, 0);
+    const dV = dt > 0 ? (inflow - outflowReal) * dt : 0;
+
+    const currentVol = this.measurements
+      .type('volume').variant('predicted').position('atequipment').getCurrentValue('m3') ?? this.basin.minVol ?? 0;
+    const writeTs = tPrev + dt * 1000;
+
+    // Bounds.
+    //   Upper (hard physical): maxVolAtOverflow — past this the basin
+    //     spills; predicted level pins at overflowLevel and the excess
+    //     becomes cumulative overflowVolume + synthetic spill flow.
+    //   Lower (operational):   dryRunSafetyVol — clamps ON TRANSITION
+    //     from above so the integrator can't drop into the unphysical
+    //     band. A basin seeded BELOW it is left alone (startup from empty).
+    //   Lower (hard physical): 0 — basin cannot hold negative water.
+    //     Any negative excess is tracked as underflowVolume (diagnostic).
+    const safety = this._computeSafetyPoints();
+    const upperClamp = this.basin.maxVolAtOverflow;
+    const lowerClamp = Math.max(0, safety.dryRunSafetyVol ?? 0);
+
+    const proposedVolume = currentVol + dV;
+    let nextVolume = proposedVolume;
+    let overflowIncrement = 0;
+    let underflowIncrement = 0;
+    if (proposedVolume > upperClamp) {
+      overflowIncrement = proposedVolume - upperClamp;
+      nextVolume = upperClamp;
+    } else if (proposedVolume < lowerClamp && currentVol >= lowerClamp) {
+      nextVolume = lowerClamp;
+    }
+    if (nextVolume < 0) {
+      underflowIncrement = -nextVolume;
+      nextVolume = 0;
+    }
+
+    // Synthetic spill flow at position 'overflow'.
+    let spillRate = 0;
+    if (nextVolume >= upperClamp - 1e-9 && (inflow - outflowReal) > this.flowThreshold) {
+      spillRate = inflow - outflowReal;
+    }
+    this.measurements
+      .type('flow').variant('predicted').position('overflow')
+      .value(spillRate, writeTs, 'm3/s').unit('m3/s');
+
+    if (overflowIncrement > 0) {
+      const prev = this.measurements
+        .type('overflowVolume').variant('predicted').position('atequipment').getCurrentValue('m3') ?? 0;
+      this.measurements
+        .type('overflowVolume').variant('predicted').position('atequipment')
+        .value(prev + overflowIncrement, writeTs, 'm3').unit('m3');
+    }
+    if (underflowIncrement > 0) {
+      const prev = this.measurements
+        .type('underflowVolume').variant('predicted').position('atequipment').getCurrentValue('m3') ?? 0;
+      this.measurements
+        .type('underflowVolume').variant('predicted').position('atequipment')
+        .value(prev + underflowIncrement, writeTs, 'm3').unit('m3');
+    }
+
+    this.measurements.type('volume').variant('predicted').position('atequipment')
+      .value(nextVolume, writeTs, 'm3').unit('m3');
+
+    const surfaceArea = this.basin.surfaceArea;
+    const nextLevel = surfaceArea > 0 ? Math.max(nextVolume, 0) / surfaceArea : 0;
+    this.measurements.type('level').variant('predicted').position('atequipment')
+      .value(nextLevel, writeTs, 'm').unit('m');
+
+    const percent = this._interp.interpolate_lin_single_point(
+      nextVolume, this.basin.minVol, this.basin.maxVolAtOverflow, 0, 100
+    );
+    this.measurements.type('volumePercent').variant('predicted').position('atequipment')
+      .value(percent, writeTs, '%');
+
+    this._predictedFlowState = { inflow, outflow: outflowReal, lastTimestamp: writeTs };
+  }
+
+  selectBestNetFlow() {
+    const type = 'flow';
+    const unit = this.measurements.getUnit(type) || 'm3/s';
+
+    for (const variant of this.flowVariants) {
+      const bucket = this.measurements.measurements?.[type]?.[variant];
+      if (!bucket || Object.keys(bucket).length === 0) continue;
+
+      const inflow = this.measurements.sum(type, variant, this.flowPositions.inflow, unit) || 0;
+      const outflowReal = this.measurements.sum(type, variant, this.flowPositions.outflow, unit) || 0;
+      // Fold synthetic spill (position 'overflow') into the outflow side
+      // so net-flow balance reads ~0 while pinned at the overflow level.
+      const spill = this.measurements.sum(type, variant, ['overflow'], unit) || 0;
+      const outflow = outflowReal + spill;
+      if (Math.abs(inflow) < this.flowThreshold && Math.abs(outflow) < this.flowThreshold) continue;
+
+      const net = inflow - outflow;
+      this.measurements.type('netFlowRate').variant(variant).position('atequipment')
+        .value(net, Date.now(), unit);
+      const result = { value: net, source: variant, direction: this.deriveDirection(net) };
+      this._lastNetFlow = result;
+      return result;
+    }
+
+    for (const variant of this.levelVariants) {
+      const rate = this._levelRate(variant);
+      if (!Number.isFinite(rate)) continue;
+      const lvl = this.measurements.type('level').variant(variant).position('atequipment').getCurrentValue('m');
+      const pinnedAtOverflow = Number.isFinite(lvl)
+        && Number.isFinite(this.basin.overflowLevel)
+        && lvl >= this.basin.overflowLevel - 1e-9;
+      const rateNearZero = Math.abs(rate) < 1e-9;
+
+      let netFlow = rate * this.basin.surfaceArea;
+      // Pinned at overflow — dL/dt collapses to 0 but flow IS still
+      // moving (in → spill). Hold the last known non-zero net-flow.
+      if (pinnedAtOverflow && rateNearZero && Number.isFinite(this._lastLevelRateNetFlow)) {
+        netFlow = this._lastLevelRateNetFlow;
+      } else if (!rateNearZero) {
+        this._lastLevelRateNetFlow = netFlow;
+      }
+      const result = { value: netFlow, source: `level:${variant}`, direction: this.deriveDirection(netFlow) };
+      this._lastNetFlow = result;
+      return result;
+    }
+
+    if (this.logger) this.logger.warn('No usable measurements to compute net flow; assuming steady.');
+    const result = { value: 0, source: null, direction: 'steady' };
+    this._lastNetFlow = result;
+    return result;
+  }
+
+  computeRemainingTime(netFlow) {
+    if (!netFlow || Math.abs(netFlow.value) < this.flowThreshold) {
+      this._lastRemaining = { seconds: null, source: null };
+      return this._lastRemaining;
+    }
+
+    const { overflowLevel, outflowLevel, surfaceArea } = this.basin;
+    if (!Number.isFinite(surfaceArea) || surfaceArea <= 0) {
+      this._lastRemaining = { seconds: null, source: null };
+      return this._lastRemaining;
+    }
+
+    for (const variant of this.levelVariants) {
+      const lvl = this.measurements.type('level').variant(variant).position('atequipment').getCurrentValue('m');
+      if (!Number.isFinite(lvl)) continue;
+
+      const remainingHeight = netFlow.value > 0
+        ? Math.max(overflowLevel - lvl, 0)
+        : Math.max(lvl - outflowLevel, 0);
+      const seconds = (remainingHeight * surfaceArea) / Math.abs(netFlow.value);
+      if (!Number.isFinite(seconds)) continue;
+
+      this._lastRemaining = { seconds, source: `${netFlow.source}/${variant}` };
+      return this._lastRemaining;
+    }
+
+    this._lastRemaining = { seconds: null, source: netFlow.source };
+    return this._lastRemaining;
+  }
+
+  deriveDirection(netFlow) {
+    if (netFlow > this.flowThreshold) return 'filling';
+    if (netFlow < -this.flowThreshold) return 'draining';
+    return 'steady';
+  }
+
+  tick() {
+    this.update();
+    const netFlow = this.selectBestNetFlow();
+    const remaining = this.computeRemainingTime(netFlow);
+    return { netFlow, remaining };
+  }
+
+  snapshot() {
+    return {
+      direction: this._lastNetFlow.direction,
+      netFlow: this._lastNetFlow.value,
+      flowSource: this._lastNetFlow.source,
+      secondsRemaining: this._lastRemaining.seconds,
+    };
+  }
+
+  _levelRate(variant) {
+    const m = this.measurements.type('level').variant(variant).position('atequipment').get();
+    if (!m || !m.values || m.values.length < 2) return null;
+    const current = m.getLaggedSample?.(0);
+    const previous = m.getLaggedSample?.(1);
+    if (!current || !previous || previous.timestamp == null) return null;
+    const dt = (current.timestamp - previous.timestamp) / 1000;
+    if (!Number.isFinite(dt) || dt <= 0) return null;
+    return (current.value - previous.value) / dt;
+  }
+}
+
+module.exports = FlowAggregator;

src/measurement/measurementRouter.js

@@ -0,0 +1,82 @@
+// MeasurementRouter — dispatches incoming measurement updates by type and
+// derives downstream measurements (volume from level, predicted level from
+// pressure). Pure domain over a context bag; no Node-RED dependency.
+
+const { coolprop, interpolation } = require('generalFunctions');
+
+const G = 9.80665;
+const ASSUMED_TEMPERATURE_C = 15;
+const ATMOSPHERIC_PRESSURE_PA = 101325;
+
+class MeasurementRouter {
+  constructor(ctx = {}) {
+    if (!ctx.measurements) throw new Error('MeasurementRouter: ctx.measurements is required');
+    if (!ctx.basin) throw new Error('MeasurementRouter: ctx.basin is required');
+
+    this.measurements = ctx.measurements;
+    this.basin = ctx.basin;
+    this.logger = ctx.logger || null;
+    this._interp = ctx.interpolation || new interpolation();
+  }
+
+  route(measurementType, value, position, eventData = {}) {
+    switch (measurementType) {
+      case 'level':
+        this.onLevelMeasurement(position, value, eventData);
+        return true;
+      case 'pressure':
+        this.onPressureMeasurement(position, value, eventData);
+        return true;
+      default:
+        return false;
+    }
+  }
+
+  onLevelMeasurement(position, value, context = {}) {
+    this.measurements.type('level').variant('measured').position(position)
+      .value(value, context.timestamp, context.unit);
+
+    const series = this.measurements.type('level').variant('measured').position(position);
+    const levelMeters = series.getCurrentValue('m');
+    if (levelMeters == null) return;
+
+    const surfaceArea = this.basin.surfaceArea;
+    const volume = surfaceArea > 0 ? Math.max(levelMeters, 0) * surfaceArea : 0;
+    const percent = this._interp.interpolate_lin_single_point(
+      volume, this.basin.minVol, this.basin.maxVolAtOverflow, 0, 100
+    );
+
+    this.measurements.type('volume').variant('measured').position('atequipment')
+      .value(volume, context.timestamp, 'm3');
+    this.measurements.type('volumePercent').variant('measured').position('atequipment')
+      .value(percent, context.timestamp, '%');
+  }
+
+  onPressureMeasurement(position, value, context = {}) {
+    let kelvin = this.measurements
+      .type('temperature').variant('measured').position('atequipment')
+      .getCurrentValue('K') ?? null;
+
+    if (kelvin === null) {
+      if (this.logger) {
+        this.logger.warn('No temperature measurement; assuming 15C for pressure to level conversion.');
+      }
+      this.measurements.type('temperature').variant('assumed').position('atequipment')
+        .value(ASSUMED_TEMPERATURE_C, Date.now(), 'C');
+      kelvin = this.measurements.type('temperature').variant('assumed').position('atequipment')
+        .getCurrentValue('K');
+    }
+    if (kelvin == null) return;
+
+    const density = coolprop.PropsSI('D', 'T', kelvin, 'P', ATMOSPHERIC_PRESSURE_PA, 'Water');
+    const pressurePa = this.measurements.type('pressure').variant('measured').position(position)
+      .getCurrentValue('Pa');
+    if (!Number.isFinite(pressurePa) || !Number.isFinite(density)) return;
+
+    const level = pressurePa / (density * G);
+    this.measurements.type('level').variant('predicted').position(position)
+      .value(level, context.timestamp, 'm');
+  }
+}
+
+module.exports = MeasurementRouter;

src/nodeClass.js

@@ -1,214 +1,80 @@
+const { BaseNodeAdapter, configManager } = require('generalFunctions');
+const PumpingStation = require('./specificClass');
+const commands = require('./commands');
 
-const { outputUtils, configManager } = require('generalFunctions');
-const Specific = require("./specificClass");
+class nodeClass extends BaseNodeAdapter {
+  static DomainClass = PumpingStation;
+  static commands = commands;
+  // Tick-driven: predicted-volume integrator needs delta-time per second.
+  static tickInterval = 1000;
+  static statusInterval = 1000;
 
-class nodeClass {
-  /**
-   * Create a node.
-   * @param {object} uiConfig - Node-RED node configuration.
-   * @param {object} RED    - Node-RED runtime API.
-   * @param {object} nodeInstance - The Node-RED node instance.
-   * @param {string} nameOfNode - The name of the node, used for
-   */
-  constructor(uiConfig, RED, nodeInstance, nameOfNode) {
-
-    // Preserve RED reference for HTTP endpoints if needed
-    this.node = nodeInstance;
-    this.RED = RED;
-    this.name = nameOfNode;
-
-    // Load default & UI config
-    this._loadConfig(uiConfig,this.node);
-
-    // Instantiate core class
-    this._setupSpecificClass();
-
-    // Wire up event and lifecycle handlers
-    this._bindEvents();
-    this._registerChild();
-    this._startTickLoop();
-    this._attachInputHandler();
-    this._attachCloseHandler();
-  }
-
-  /**
-   * Load and merge default config with user-defined settings.
-   * @param {object} uiConfig - Raw config from Node-RED UI.
-   */
-  _loadConfig(uiConfig,node) {
-    const cfgMgr = new configManager();
-    this.defaultConfig = cfgMgr.getConfig(this.name);
-
-    // Build config: base sections + pumpingStation-specific domain config
-    this.config = cfgMgr.buildConfig(this.name, uiConfig, node.id, {
+  buildDomainConfig(uiConfig) {
+    return {
       basin: {
         volume: uiConfig.basinVolume,
         height: uiConfig.basinHeight,
-        heightInlet: uiConfig.heightInlet,
-        heightOutlet: uiConfig.heightOutlet,
-        heightOverflow: uiConfig.heightOverflow,
+        inflowLevel: uiConfig.inflowLevel,
+        outflowLevel: uiConfig.outflowLevel,
+        overflowLevel: uiConfig.overflowLevel,
+        inletPipeDiameter: uiConfig.inletPipeDiameter,
+        outletPipeDiameter: uiConfig.outletPipeDiameter,
       },
       hydraulics: {
         refHeight: uiConfig.refHeight,
+        minHeightBasedOn: uiConfig.minHeightBasedOn,
         basinBottomRef: uiConfig.basinBottomRef,
-      }
-    });
-
-    // Utility for formatting outputs
-    this._output = new outputUtils();
+        maxInflowRate: uiConfig.maxInflowRate,
+        staticHead: uiConfig.staticHead,
+        maxDischargeHead: uiConfig.maxDischargeHead,
+        pipelineLength: uiConfig.pipelineLength,
+        defaultFluid: uiConfig.defaultFluid,
+        temperatureReferenceDegC: uiConfig.temperatureReferenceDegC,
+      },
+      control: {
+        mode: uiConfig.controlMode,
+        levelbased: {
+          minLevel: uiConfig.minLevel,
+          startLevel: uiConfig.startLevel,
+          stopLevel: uiConfig.stopLevel,
+          holdLevel: uiConfig.holdLevel,
+          maxLevel: uiConfig.maxLevel,
+          // Editor names the field levelCurveType; runtime uses curveType.
+          curveType: uiConfig.levelCurveType || uiConfig.curveType,
+          logCurveFactor: uiConfig.logCurveFactor,
+          enableShiftedRamp: uiConfig.enableShiftedRamp,
+          shiftLevel: uiConfig.shiftLevel,
+          shiftArmPercent: uiConfig.shiftArmPercent,
+          deadZoneKeepAlivePercent: uiConfig.deadZoneKeepAlivePercent,
+        },
+      },
+      safety: {
+        enableDryRunProtection: uiConfig.enableDryRunProtection,
+        dryRunThresholdPercent: uiConfig.dryRunThresholdPercent,
+        enableHighVolumeSafety: uiConfig.enableHighVolumeSafety ?? uiConfig.enableOverfillProtection,
+        highVolumeSafetyThresholdPercent: uiConfig.highVolumeSafetyThresholdPercent ?? uiConfig.overfillThresholdPercent,
+        enableOverfillProtection: uiConfig.enableOverfillProtection,
+        overfillThresholdPercent: uiConfig.overfillThresholdPercent,
+        timeleftToFullOrEmptyThresholdSeconds: uiConfig.timeleftToFullOrEmptyThresholdSeconds,
+      },
+      output: {
+        process: uiConfig.processOutputFormat,
+        dbase: uiConfig.dbaseOutputFormat,
+      },
+    };
   }
 
-  /**
-   * Instantiate the core logic and store as source.
-   */
-  _setupSpecificClass() {
-    this.source = new Specific(this.config);
-    this.node.source = this.source; // Store the source in the node instance for easy access
-  }
-
-  /**
-   * Bind Node-RED status updates.
-   */
-  _bindEvents() {
-    
-  }
-
-  // init registration msg
-  _registerChild() {
-    setTimeout(() => {
-      this.node.send([
-        null,
-        null,
-        { topic: 'registerChild', payload: this.node.id , positionVsParent: this.config?.functionality?.positionVsParent || 'atEquipment' , distance: this.config?.functionality?.distance || null},
-      ]);
-    }, 100);
-  }
-
-  _updateNodeStatus() {
-    const ps = this.source;
-    try {
-      // --- Basin & measurements -------------------------------------------------
-      const maxVolBeforeOverflow = ps.basin?.maxVolOverflow ?? ps.basin?.maxVol ?? 0;
-      const volumeMeasurement = ps.measurements.type("volume").variant("measured").position("atEquipment");
-      const currentVolume = volumeMeasurement.getCurrentValue("m3") ?? 0;
-      const netFlowMeasurement = ps.measurements.type("netFlowRate").variant("predicted").position("atEquipment");
-      const netFlowM3s = netFlowMeasurement?.getCurrentValue("m3/s") ?? 0;
-      const netFlowM3h = netFlowM3s * 3600;
-      const percentFull = ps.measurements.type("volume").variant("procent").position("atEquipment").getCurrentValue() ?? 0;
-
-      // --- State information ----------------------------------------------------
-      const direction = ps.state?.direction || "unknown";
-      const secondsRemaining = ps.state?.seconds ?? null;
-
-      const timeRemaining = secondsRemaining ? `${Math.round(secondsRemaining / 60)}` : 0 + " min";
-
-      // --- Icon / colour selection ---------------------------------------------
-      let symbol = "❔";
-      let fill = "grey";
-
-      switch (direction) {
-        case "filling":
-          symbol = "⬆️";
-          fill = "blue";
-          break;
-        case "draining":
-          symbol = "⬇️";
-          fill = "orange";
-          break;
-        case "stable":
-          symbol = "⏸️";
-          fill = "green";
-          break;
-        default:
-          symbol = "❔";
-          fill = "grey";
-          break;
-      }
-
-      // --- Status text ----------------------------------------------------------
-      const textParts = [
-        `${symbol} ${percentFull.toFixed(1)}%`,
-        `V=${currentVolume.toFixed(2)} / ${maxVolBeforeOverflow.toFixed(2)} m³`,
-        `net=${netFlowM3h.toFixed(1)} m³/h`,
-        `t≈${timeRemaining}`
-      ];
-
-      return {
-        fill,
-        shape: "dot",
-        text: textParts.join(" | ")
-      };
-    } catch (error) {
-      this.node.error("Error in updateNodeStatus: " + error.message);
-      return { fill: "red", shape: "ring", text: "Status Error" };
-    }
-  }
-
-
-  // any time based functions here
-  _startTickLoop() {
-    setTimeout(() => {
-      this._tickInterval = setInterval(() => this._tick(), 1000);
-
-      // Update node status on nodered screen every second ( this is not the best way to do this, but it works for now)
-      this._statusInterval = setInterval(() => {
-        const status = this._updateNodeStatus();
-        this.node.status(status);
-      }, 1000);
-
-    }, 1000);
-  }
-
-  /**
-   * Execute a single tick: update measurement, format and send outputs.
-   */
-  _tick() {
-    
-    //pumping station needs time based ticks to recalc level when predicted
-    this.source.tick();
-    const raw = this.source.getOutput();
-    const processMsg = this._output.formatMsg(raw, this.config, 'process');
-    const influxMsg  = this._output.formatMsg(raw, this.config, 'influxdb');
-
-    // Send only updated outputs on ports 0 & 1
-    this.node.send([processMsg, influxMsg]);
-  }
-
-  /**
-   * Attach the node's input handler, routing control messages to the class.
-   */
-  _attachInputHandler() {
-    this.node.on('input', (msg, send, done) => {
-      switch (msg.topic) {
-        //example
-        /*case 'simulator':
-          this.source.toggleSimulation();      
-          break;
-        default:
-          this.source.handleInput(msg);
-          break;
-          */
-        case 'registerChild': {
-          // Register this node as a child of the parent node
-          const childId = msg.payload;
-          const childObj = this.RED.nodes.getNode(childId);
-          this.source.childRegistrationUtils.registerChild(childObj.source ,msg.positionVsParent);
-          break;
-        }
-      }
-      done();
-    });
-  }
-
-  /**
-   * Clean up timers and intervals when Node-RED stops the node.
-   */
-  _attachCloseHandler() {
-    this.node.on('close', (done) => {
-      clearInterval(this._tickInterval);
-      clearInterval(this._statusInterval);
-      done();
-    });
+  // Test-only entrypoint mirroring the basin-docs config-mapping surface.
+  // Lets `NodeClass.prototype._loadConfig.call({name:'pumpingStation'}, ui, node)`
+  // produce the merged config without instantiating a full Node-RED adapter.
+  // Production wiring goes through BaseNodeAdapter; this is a thin shim.
+  _loadConfig(uiConfig, node) {
+    const cfgMgr = new configManager();
+    const name = this.name || 'pumpingStation';
+    const domain = nodeClass.prototype.buildDomainConfig.call(this, uiConfig);
+    this.defaultConfig = cfgMgr.getConfig(name);
+    this.config = cfgMgr.buildConfig(name, uiConfig, node && node.id, domain);
+    return this.config;
   }
 }
 

src/safety/safetyController.js

@@ -0,0 +1,156 @@
+// Safety controller for the pumping-station basin.
+//
+// Two hard rules, applied independently every tick:
+//
+//   1. DRY-RUN (volume below minVol while draining): pumps must stop.
+//      Shuts down all DOWNSTREAM machines + machine groups + child
+//      stations. Sets blocked=true so the orchestrator skips control
+//      logic — only a manual override or estop can restart pumps.
+//
+//   2. OVERFILL (volume above overflow level while filling): pumps must
+//      keep running. Shuts down UPSTREAM equipment only (stop more water
+//      coming in) and child stations. Does NOT touch machine groups or
+//      downstream pumps — they must keep draining. blocked stays false
+//      so level-based control keeps demanding maximum throughput.
+//
+// A third path: if no volume reading is available, panic — shut down
+// every machine and block control.
+
+function pickVariant(measurements, type, variants, position, unit) {
+  for (const variant of variants) {
+    const v = measurements.type(type).variant(variant).position(position).getCurrentValue(unit);
+    if (Number.isFinite(v)) return v;
+  }
+  return null;
+}
+
+class SafetyController {
+  /**
+   * @param {object} ctx
+   * @param {object} ctx.measurements   MeasurementContainer-like instance
+   * @param {object} ctx.basin          BasinGeometry snapshot ({maxVolAtOverflow, minVol, ...})
+   * @param {object} ctx.config         pumpingStation config (uses .safety subtree)
+   * @param {object} ctx.logger         generalFunctions logger
+   * @param {object} ctx.machines       map of childId → rotatingMachine
+   * @param {object} ctx.stations       map of childId → child pumpingStation
+   * @param {object} ctx.machineGroups  map of childId → machineGroupControl
+   * @param {string[]} [ctx.volVariants] order of volume variants to try
+   */
+  constructor(ctx) {
+    this.ctx = ctx;
+    this.volVariants = ctx.volVariants || ['measured', 'predicted'];
+  }
+
+  /**
+   * Run the dry-run + overfill rules against the current measurement state.
+   *
+   * @param {object} flowSnapshot  { direction: 'filling'|'draining'|'steady',
+   *                                 secondsRemaining: number|null }
+   * @returns {{blocked:boolean, reason:string|null, triggered:string[]}}
+   */
+  evaluate(flowSnapshot) {
+    const { measurements, basin, config, logger, machines } = this.ctx;
+    const direction = flowSnapshot?.direction ?? 'steady';
+    const secondsRemaining = flowSnapshot?.secondsRemaining ?? null;
+
+    const volUnit = measurements.getUnit('volume');
+    const vol = pickVariant(measurements, 'volume', this.volVariants, 'atequipment', volUnit);
+
+    if (vol == null) {
+      Object.values(machines).forEach((m) => m.handleInput('parent', 'execSequence', 'shutdown'));
+      logger.warn('No volume data available to safe guard system; shutting down all machines.');
+      return { blocked: true, reason: 'no-volume-data', triggered: ['no-volume-data'] };
+    }
+
+    const triggered = [];
+    let blocked = false;
+    let reason = null;
+
+    const dry = this._dryRunRule(vol, direction, secondsRemaining);
+    if (dry.triggered) {
+      this._shutdownDownstream(vol, secondsRemaining);
+      blocked = true;
+      reason = 'dry-run';
+      triggered.push(...dry.flags);
+    }
+
+    const over = this._overfillRule(vol, direction, secondsRemaining);
+    if (over.triggered) {
+      this._shutdownUpstream(vol, secondsRemaining);
+      // Overfill never sets blocked — control keeps running.
+      if (reason == null) reason = 'overfill';
+      triggered.push(...over.flags);
+    }
+
+    return { blocked, reason, triggered };
+  }
+
+  _safetyConfig() {
+    return this.ctx.config.safety || {};
+  }
+
+  _dryRunRule(vol, direction, secondsRemaining) {
+    if (direction !== 'draining') return { triggered: false, flags: [] };
+    const s = this._safetyConfig();
+    const dryRunEnabled = Boolean(s.enableDryRunProtection);
+    const timeProtectionEnabled = s.timeleftToFullOrEmptyThresholdSeconds > 0;
+    const triggerLowVol = this.ctx.basin.minVol * (1 + ((Number(s.dryRunThresholdPercent) || 0) / 100));
+
+    const flags = [];
+    if (dryRunEnabled && vol < triggerLowVol) flags.push('dry-run-volume');
+    if (timeProtectionEnabled && secondsRemaining != null && secondsRemaining < s.timeleftToFullOrEmptyThresholdSeconds) {
+      flags.push('time-remaining');
+    }
+    return { triggered: flags.length > 0, flags };
+  }
+
+  _overfillRule(vol, direction, secondsRemaining) {
+    if (direction !== 'filling') return { triggered: false, flags: [] };
+    const s = this._safetyConfig();
+    // basin-docs renamed enableOverfillProtection → enableHighVolumeSafety;
+    // both work as aliases (HEAD already maps in buildDomainConfig).
+    const enabled = Boolean(s.enableHighVolumeSafety ?? s.enableOverfillProtection);
+    const timeProtectionEnabled = s.timeleftToFullOrEmptyThresholdSeconds > 0;
+    const pct = Number(s.highVolumeSafetyThresholdPercent ?? s.overfillThresholdPercent) || 0;
+    const triggerHighVol = this.ctx.basin.maxVolAtOverflow * (pct / 100);
+
+    const flags = [];
+    if (enabled && vol > triggerHighVol) flags.push('overfill-volume');
+    if (timeProtectionEnabled && secondsRemaining != null && secondsRemaining < s.timeleftToFullOrEmptyThresholdSeconds) {
+      flags.push('time-remaining');
+    }
+    return { triggered: flags.length > 0, flags };
+  }
+
+  _shutdownDownstream(vol, secondsRemaining) {
+    const { machines, machineGroups, stations, logger } = this.ctx;
+    Object.values(machines).forEach((machine) => {
+      const pos = machine?.config?.functionality?.positionVsParent;
+      if ((pos === 'downstream' || pos === 'atequipment') && machine._isOperationalState()) {
+        machine.handleInput('parent', 'execSequence', 'shutdown');
+      }
+    });
+    Object.values(stations).forEach((st) => st.handleInput('parent', 'execSequence', 'shutdown'));
+    Object.values(machineGroups).forEach((g) => g.turnOffAllMachines());
+    logger.warn(
+      `Dry-run safety: vol=${vol.toFixed(2)} m3, remainingTime=${secondsRemaining ? secondsRemaining.toFixed(1) : 'N/A'} s; shutting down downstream equipment`
+    );
+  }
+
+  _shutdownUpstream(vol, secondsRemaining) {
+    const { machines, stations, logger } = this.ctx;
+    Object.values(machines).forEach((machine) => {
+      const pos = machine?.config?.functionality?.positionVsParent;
+      if (pos === 'upstream' && machine._isOperationalState()) {
+        machine.handleInput('parent', 'execSequence', 'shutdown');
+      }
+    });
+    Object.values(stations).forEach((st) => st.handleInput('parent', 'execSequence', 'shutdown'));
+    // Machine groups intentionally NOT shut down — they must keep draining.
+    logger.warn(
+      `Overfill safety: vol=${vol.toFixed(2)} m3, remainingTime=${secondsRemaining ? secondsRemaining.toFixed(1) : 'N/A'} s; shutting down upstream equipment only — pumps keep running`
+    );
+  }
+}
+
+module.exports = SafetyController;

test/basic/BasinGeometry.basic.test.js

@@ -0,0 +1,106 @@
+// Basic unit tests for BasinGeometry.
+// Run with:  node --test test/basic/BasinGeometry.basic.test.js
+
+const test = require('node:test');
+const assert = require('node:assert/strict');
+
+const BasinGeometry = require('../../src/basin/BasinGeometry');
+
+function makeBasin(overrides = {}) {
+  const basin = {
+    volume: 50,
+    height: 5,
+    inflowLevel: 3,
+    outflowLevel: 0.2,
+    overflowLevel: 4.5,
+    ...overrides.basin,
+  };
+  const hydraulics = {
+    minHeightBasedOn: 'outlet',
+    ...overrides.hydraulics,
+  };
+  return new BasinGeometry(basin, hydraulics);
+}
+
+test('constructor produces correct surfaceArea = volume / height', () => {
+  const g = makeBasin();
+  assert.equal(g.surfaceArea, 10);  // 50 / 5
+  assert.equal(g.heightBasin, 5);
+  assert.equal(g.volEmptyBasin, 50);
+});
+
+test('maxVolAtOverflow equals overflowLevel × surfaceArea', () => {
+  const g = makeBasin();
+  assert.equal(g.maxVolAtOverflow, 4.5 * 10);  // 45
+  assert.equal(g.minVolAtInflow, 3 * 10);       // 30
+  assert.equal(g.minVolAtOutflow, 0.2 * 10);    // 2
+  assert.equal(g.maxVol, 50);
+});
+
+test("minVol selects outlet-based when minHeightBasedOn = 'outlet'", () => {
+  const g = makeBasin();
+  assert.equal(g.minVol, g.minVolAtOutflow);
+  assert.equal(g.minHeightBasedOn, 'outlet');
+});
+
+test("minVol selects inlet-based when minHeightBasedOn = 'inlet'", () => {
+  const g = makeBasin({ hydraulics: { minHeightBasedOn: 'inlet' } });
+  assert.equal(g.minVol, g.minVolAtInflow);
+  assert.equal(g.minHeightBasedOn, 'inlet');
+});
+
+test('volumeFromLevel(0) returns 0; negative level clamps to 0', () => {
+  const g = makeBasin();
+  assert.equal(g.volumeFromLevel(0), 0);
+  assert.equal(g.volumeFromLevel(-1), 0);
+  assert.equal(g.volumeFromLevel(-1e9), 0);
+});
+
+test('volumeFromLevel(positive) is level × surfaceArea', () => {
+  const g = makeBasin();
+  assert.equal(g.volumeFromLevel(2.5), 25);
+  assert.equal(g.volumeFromLevel(5), 50);
+});
+
+test('levelFromVolume(maxVol) returns heightBasin', () => {
+  const g = makeBasin();
+  assert.equal(g.levelFromVolume(g.maxVol), g.heightBasin);
+});
+
+test('levelFromVolume(0) returns 0; negative volume clamps to 0', () => {
+  const g = makeBasin();
+  assert.equal(g.levelFromVolume(0), 0);
+  assert.equal(g.levelFromVolume(-10), 0);
+});
+
+test('round-trip: volumeFromLevel(levelFromVolume(v)) ≈ v for v in range', () => {
+  const g = makeBasin();
+  for (const v of [0, 0.001, 1, 12.34, 25, 49.999, 50]) {
+    const back = g.volumeFromLevel(g.levelFromVolume(v));
+    assert.ok(Math.abs(back - v) < 1e-9, `round-trip failed for v=${v}, got ${back}`);
+  }
+});
+
+test('round-trip: levelFromVolume(volumeFromLevel(L)) ≈ L for L in range', () => {
+  const g = makeBasin();
+  for (const L of [0, 0.05, 1, 2.5, 4.5, 5]) {
+    const back = g.levelFromVolume(g.volumeFromLevel(L));
+    assert.ok(Math.abs(back - L) < 1e-9, `round-trip failed for L=${L}, got ${back}`);
+  }
+});
+
+test('snapshot() exposes legacy this.basin field names', () => {
+  const g = makeBasin();
+  const s = g.snapshot();
+  const expectedKeys = [
+    'volEmptyBasin', 'heightBasin', 'inflowLevel', 'outflowLevel',
+    'overflowLevel', 'surfaceArea', 'maxVol', 'maxVolAtOverflow',
+    'minVolAtInflow', 'minVolAtOutflow', 'minVol', 'minHeightBasedOn',
+  ];
+  for (const k of expectedKeys) {
+    assert.ok(k in s, `snapshot missing key: ${k}`);
+  }
+  assert.equal(s.volEmptyBasin, 50);
+  assert.equal(s.surfaceArea, 10);
+  assert.equal(s.minHeightBasedOn, 'outlet');
+});

test/basic/_probe_upstream_emit.test.js

@@ -0,0 +1,85 @@
+// Throwaway probe — exercises the exact path:
+//   measurement child writes flow.measured.upstream → pumpingStation parent
+//   subscribes → getOutput() (≡ what Port 0 emits).
+// Run with: node --test test/basic/_probe_upstream_emit.test.js
+
+const test = require('node:test');
+const assert = require('node:assert/strict');
+
+const PumpingStation = require('../../src/specificClass');
+const { MeasurementContainer, configManager } = require('generalFunctions');
+const EventEmitter = require('node:events');
+
+// Minimal PumpingStation config — matches the editor defaults shape.
+function makePsConfig() {
+  const ui = {
+    name: 'PS', basinVolume: 50, basinHeight: 5,
+    inflowLevel: 3, outflowLevel: 0.2, overflowLevel: 4.5,
+    minHeightBasedOn: 'outlet',
+    controlMode: 'levelbased',
+    minLevel: 1, startLevel: 2, maxLevel: 4,
+    levelCurveType: 'linear',
+    processOutputFormat: 'process', dbaseOutputFormat: 'influxdb',
+  };
+  const cm = new configManager();
+  // Use the same buildConfig pipeline the runtime uses.
+  return cm.buildConfig('pumpingStation', ui, 'ps-probe', {
+    basin: {
+      volume: 50, height: 5, inflowLevel: 3, outflowLevel: 0.2, overflowLevel: 4.5,
+    },
+    hydraulics: { minHeightBasedOn: 'outlet' },
+    control: {
+      mode: 'levelbased',
+      allowedModes: new Set(['levelbased']),
+      levelbased: { minLevel: 1, startLevel: 2, maxLevel: 4, curveType: 'linear' },
+    },
+    safety: {},
+  });
+}
+
+// Fake measurement child that looks exactly like the real one to the router:
+//   - softwareType 'measurement'
+//   - config.asset.type = 'flow'
+//   - config.functionality.positionVsParent = 'upstream'
+//   - .measurements is a real MeasurementContainer with a real emitter
+function makeMeasurementChild(id = 'meas-probe') {
+  const measurements = new MeasurementContainer({
+    autoConvert: true,
+    preferredUnits: { flow: 'm3/s' },
+  });
+  // Real container ships an emitter; sanity check.
+  assert.ok(measurements.emitter instanceof EventEmitter || typeof measurements.emitter?.on === 'function');
+  return {
+    id,
+    source: {
+      config: {
+        general: { id, name: id },
+        functionality: { softwareType: 'measurement', positionVsParent: 'upstream' },
+        asset: { type: 'flow' },
+      },
+      measurements,
+    },
+  };
+}
+
+test('PROBE: measurement child writes flow.measured.upstream — parent surfaces it on getOutput()', () => {
+  const ps = new PumpingStation(makePsConfig());
+  const child = makeMeasurementChild();
+
+  // Register the child the same way the runtime does.
+  ps.childRegistrationUtils.registerChild(child.source, 'upstream');
+
+  // Drive a value through the child's MeasurementContainer the way Channel
+  // does — type/variant/position chain then .value().
+  child.source.measurements
+    .type('flow').variant('measured').position('upstream')
+    .value(12, Date.now(), 'm3/h');   // 12 m³/h ≈ 0.00333 m³/s
+
+  const out = ps.getOutput();
+  const upstreamKeys = Object.keys(out).filter((k) => k.startsWith('flow.measured.upstream'));
+  console.log('flow.measured.upstream.* keys in Port 0 payload:', upstreamKeys);
+  for (const k of upstreamKeys) console.log(`  ${k} = ${out[k]}`);
+
+  // The contract: the parent should surface the upstream measurement.
+  assert.ok(upstreamKeys.length > 0, 'parent must surface flow.measured.upstream.* on Port 0');
+});

test/basic/calibration.basic.test.js

@@ -0,0 +1,106 @@
+// Basic tests for the calibration helpers.
+
+const test = require('node:test');
+const assert = require('node:assert/strict');
+
+const { MeasurementContainer } = require('generalFunctions');
+const {
+  calibratePredictedVolume,
+  calibratePredictedLevel,
+  setManualInflow,
+} = require('../../src/measurement/calibration');
+
+function makeBasin() {
+  return {
+    surfaceArea: 10,
+    minVol: 2,
+    maxVol: 50,
+    maxVolAtOverflow: 45,
+    overflowLevel: 4.5,
+    outflowLevel: 0.2,
+    inflowLevel: 3,
+  };
+}
+
+function makeCtx(seedVolume = null) {
+  const measurements = new MeasurementContainer({
+    autoConvert: true,
+    preferredUnits: { flow: 'm3/s', level: 'm', volume: 'm3' },
+  });
+  const basin = makeBasin();
+  if (seedVolume != null) {
+    measurements.type('volume').variant('predicted').position('atequipment')
+      .value(seedVolume, Date.now() - 5_000, 'm3').unit('m3');
+  }
+  const ctx = { measurements, basin };
+  return ctx;
+}
+
+test('calibratePredictedVolume clears prior series and writes new value', async () => {
+  const ctx = makeCtx(12);
+  const before = ctx.measurements.type('volume').variant('predicted').position('atequipment')
+    .getCurrentValue('m3');
+  assert.ok(Math.abs(before - 12) < 1e-9);
+
+  const ts = Date.now();
+  calibratePredictedVolume(ctx, 30, ts);
+
+  const m = ctx.measurements.type('volume').variant('predicted').position('atequipment').get();
+  assert.equal(m.values.length, 1, 'series should hold exactly the calibration point');
+  assert.ok(Math.abs(m.getCurrentValue() - 30) < 1e-9);
+
+  // Level was derived: 30 / 10 = 3 m.
+  const lvl = ctx.measurements.type('level').variant('predicted').position('atequipment')
+    .getCurrentValue('m');
+  assert.ok(Math.abs(lvl - 3) < 1e-9, `derived level was ${lvl}`);
+
+  assert.equal(ctx._predictedFlowState.lastTimestamp, ts);
+  assert.equal(ctx._predictedFlowState.inflow, 0);
+  assert.equal(ctx._predictedFlowState.outflow, 0);
+});
+
+test('calibratePredictedLevel writes both level and derived volume', async () => {
+  const ctx = makeCtx(2);
+  calibratePredictedLevel(ctx, 4.0, Date.now(), 'm');
+
+  const lvl = ctx.measurements.type('level').variant('predicted').position('atequipment')
+    .getCurrentValue('m');
+  assert.ok(Math.abs(lvl - 4.0) < 1e-9);
+
+  const vol = ctx.measurements.type('volume').variant('predicted').position('atequipment')
+    .getCurrentValue('m3');
+  assert.ok(Math.abs(vol - 40) < 1e-9, `derived volume was ${vol}`);
+});
+
+test('setManualInflow writes to flow.predicted.in.manual-qin', async () => {
+  const ctx = makeCtx();
+  const ts = Date.now();
+  setManualInflow(ctx, 0.025, ts, 'm3/s');
+
+  const series = ctx.measurements.type('flow').variant('predicted').position('in').child('manual-qin');
+  const val = series.getCurrentValue('m3/s');
+  assert.ok(Math.abs(val - 0.025) < 1e-9, `manual-qin value was ${val}`);
+
+  // It must NOT collide with the default child bucket.
+  const defaultBucket = ctx.measurements.measurements?.flow?.predicted?.in?.default;
+  assert.equal(defaultBucket, undefined);
+});
+
+test('calibration uses ctx.flowAggregator.resetState when present', async () => {
+  const ctx = makeCtx(5);
+  let resetCalled = null;
+  ctx.flowAggregator = { resetState: (ts) => { resetCalled = ts; } };
+
+  const ts = 1234567890;
+  calibratePredictedVolume(ctx, 20, ts);
+
+  assert.equal(resetCalled, ts);
+  // The plain bag should NOT be touched when the aggregator hook is present.
+  assert.equal(ctx._predictedFlowState, undefined);
+});
+
+test('calibratePredictedVolume rejects bad context', async () => {
+  assert.throws(() => calibratePredictedVolume({}, 10));
+  assert.throws(() => calibratePredictedLevel({}, 1.0));
+  assert.throws(() => setManualInflow({}, 0.01));
+});

test/basic/commands.basic.test.js

@@ -0,0 +1,185 @@
+// Basic tests for the pumpingStation commands registry.
+// Run with:  node --test test/basic/commands.basic.test.js
+
+'use strict';
+
+const test = require('node:test');
+const assert = require('node:assert/strict');
+
+const { createRegistry } = require('generalFunctions');
+const commands = require('../../src/commands');
+
+// --- helpers ---------------------------------------------------------------
+
+function makeLogger() {
+  const calls = { warn: [], error: [], info: [], debug: [] };
+  return {
+    calls,
+    warn: (m) => calls.warn.push(String(m)),
+    error: (m) => calls.error.push(String(m)),
+    info: (m) => calls.info.push(String(m)),
+    debug: (m) => calls.debug.push(String(m)),
+  };
+}
+
+function makeSource({ mode = 'manual' } = {}) {
+  const calls = {
+    changeMode: [],
+    calibratePredictedVolume: [],
+    calibratePredictedLevel: [],
+    setManualInflow: [],
+    forwardDemandToChildren: [],
+    registerChild: [],
+  };
+  const source = {
+    mode,
+    logger: makeLogger(),
+    changeMode: (m) => calls.changeMode.push(m),
+    calibratePredictedVolume: (v) => calls.calibratePredictedVolume.push(v),
+    calibratePredictedLevel: (v) => calls.calibratePredictedLevel.push(v),
+    setManualInflow: (v, ts, u) => calls.setManualInflow.push({ v, ts, u }),
+    forwardDemandToChildren: async (d) => { calls.forwardDemandToChildren.push(d); },
+    childRegistrationUtils: {
+      registerChild: (childSource, position) =>
+        calls.registerChild.push({ childSource, position }),
+    },
+  };
+  return { source, calls };
+}
+
+function makeCtx({ child = null, logger = makeLogger() } = {}) {
+  return {
+    logger,
+    RED: { nodes: { getNode: (id) => (child && child.id === id ? child : undefined) } },
+    node: {},
+    send: () => {},
+  };
+}
+
+function makeRegistry(logger) {
+  return createRegistry(commands, { logger });
+}
+
+// --- tests -----------------------------------------------------------------
+
+test('canonical topics dispatch to their handlers', async () => {
+  const { source, calls } = makeSource();
+  const reg = makeRegistry(makeLogger());
+
+  await reg.dispatch({ topic: 'set.mode', payload: 'levelbased' }, source, makeCtx());
+  assert.deepEqual(calls.changeMode, ['levelbased']);
+
+  await reg.dispatch({ topic: 'cmd.calibrate.volume', payload: '12.5' }, source, makeCtx());
+  assert.deepEqual(calls.calibratePredictedVolume, [12.5]);
+
+  await reg.dispatch({ topic: 'cmd.calibrate.level', payload: 1.25 }, source, makeCtx());
+  assert.deepEqual(calls.calibratePredictedLevel, [1.25]);
+
+  // Registry normalises to the descriptor's `units.default` (m3/h) before
+  // the handler runs. 0.5 m3/s -> 1800 m3/h.
+  await reg.dispatch({ topic: 'set.inflow', payload: 0.5, unit: 'm3/s' }, source, makeCtx());
+  assert.equal(calls.setManualInflow.length, 1);
+  assert.equal(calls.setManualInflow[0].v, 1800);
+  assert.equal(calls.setManualInflow[0].u, 'm3/h');
+
+  await reg.dispatch({ topic: 'set.demand', payload: 100 }, source, makeCtx());
+  assert.deepEqual(calls.forwardDemandToChildren, [100]);
+});
+
+test('child.register canonical resolves child via RED.nodes.getNode', async () => {
+  const { source, calls } = makeSource();
+  const child = { id: 'child-1', source: { tag: 'child-domain' } };
+  const reg = makeRegistry(makeLogger());
+
+  await reg.dispatch(
+    { topic: 'child.register', payload: 'child-1', positionVsParent: 'upstream' },
+    source,
+    makeCtx({ child })
+  );
+  assert.equal(calls.registerChild.length, 1);
+  assert.equal(calls.registerChild[0].childSource, child.source);
+  assert.equal(calls.registerChild[0].position, 'upstream');
+});
+
+test('aliases dispatch to the same handler and log a one-time deprecation', async () => {
+  const { source, calls } = makeSource();
+  const ctxLogger = makeLogger();
+  const reg = makeRegistry(ctxLogger);
+
+  await reg.dispatch({ topic: 'changemode', payload: 'manual' }, source, makeCtx({ logger: ctxLogger }));
+  await reg.dispatch({ topic: 'changemode', payload: 'manual' }, source, makeCtx({ logger: ctxLogger }));
+
+  assert.deepEqual(calls.changeMode, ['manual', 'manual']);
+  const deprecWarns = ctxLogger.calls.warn.filter((m) => m.includes("'changemode' is deprecated"));
+  assert.equal(deprecWarns.length, 1, 'deprecation warning should log exactly once');
+  assert.equal(reg.deprecationStats().changemode, 2);
+
+  // q_in alias also routes to setInflow.
+  await reg.dispatch({ topic: 'q_in', payload: 0.25, unit: 'm3/s' }, source, makeCtx({ logger: ctxLogger }));
+  assert.equal(calls.setManualInflow.length, 1);
+});
+
+test('child.register with unknown child id logs warn and does not throw', async () => {
+  const { source, calls } = makeSource();
+  const ctxLogger = makeLogger();
+  const reg = makeRegistry(makeLogger());
+
+  await assert.doesNotReject(() =>
+    reg.dispatch(
+      { topic: 'child.register', payload: 'missing-id', positionVsParent: 'atEquipment' },
+      source,
+      makeCtx({ logger: ctxLogger })
+    )
+  );
+  assert.equal(calls.registerChild.length, 0);
+  assert.ok(
+    ctxLogger.calls.warn.some((m) => m.includes('registerChild') && m.includes('missing-id')),
+    `expected warn about missing child, got: ${JSON.stringify(ctxLogger.calls.warn)}`
+  );
+});
+
+test('set.inflow accepts number payload and { value, unit, timestamp } object payload', async () => {
+  const { source, calls } = makeSource();
+  const reg = makeRegistry(makeLogger());
+
+  // After registry units-normalisation the handler always sees a number in
+  // the descriptor's default unit (m3/h). 0.5 m3/s -> 1800 m3/h.
+  await reg.dispatch({ topic: 'set.inflow', payload: 0.5, unit: 'm3/s', timestamp: 1000 }, source, makeCtx());
+  assert.deepEqual(calls.setManualInflow[0], { v: 1800, ts: 1000, u: 'm3/h' });
+
+  // Object payload `{ value, unit }` is flattened to a number; 2 m3/h stays
+  // 2 m3/h. The timestamp travels on the msg envelope after normalisation
+  // (the per-payload `timestamp` field is not preserved by the flatten).
+  await reg.dispatch(
+    { topic: 'set.inflow', payload: { value: 2, unit: 'm3/h' }, timestamp: 2000 },
+    source,
+    makeCtx()
+  );
+  assert.deepEqual(calls.setManualInflow[1], { v: 2, ts: 2000, u: 'm3/h' });
+});
+
+test('set.demand in non-manual mode logs debug and does not call forwardDemandToChildren', async () => {
+  const { source, calls } = makeSource({ mode: 'levelbased' });
+  const ctxLogger = makeLogger();
+  const reg = makeRegistry(makeLogger());
+
+  await reg.dispatch({ topic: 'set.demand', payload: 50 }, source, makeCtx({ logger: ctxLogger }));
+  assert.equal(calls.forwardDemandToChildren.length, 0);
+  assert.ok(
+    ctxLogger.calls.debug.some((m) => m.includes('set.demand') && m.includes('levelbased')),
+    `expected debug about ignoring demand, got: ${JSON.stringify(ctxLogger.calls.debug)}`
+  );
+});
+
+test('set.demand with non-numeric payload logs warn and does not call', async () => {
+  const { source, calls } = makeSource({ mode: 'manual' });
+  const ctxLogger = makeLogger();
+  const reg = makeRegistry(makeLogger());
+
+  await reg.dispatch({ topic: 'set.demand', payload: 'oops' }, source, makeCtx({ logger: ctxLogger }));
+  assert.equal(calls.forwardDemandToChildren.length, 0);
+  assert.ok(
+    ctxLogger.calls.warn.some((m) => m.includes('set.demand') && m.includes('oops')),
+    `expected warn about invalid Qd, got: ${JSON.stringify(ctxLogger.calls.warn)}`
+  );
+});

test/basic/control-levelBased.basic.test.js

@@ -0,0 +1,232 @@
+// Unit tests for the level-based control strategy.
+// Run with: node --test test/basic/control-levelBased.basic.test.js
+
+const test = require('node:test');
+const assert = require('node:assert/strict');
+
+const levelBased = require('../../src/control/levelBased');
+
+function makeMeasurements(levelMeters) {
+  // Minimal MeasurementContainer stand-in. The strategy only calls
+  // getUnit('level') and a chain ending in getCurrentValue(unit).
+  const chain = {
+    type() { return chain; },
+    variant() { return chain; },
+    position() { return chain; },
+    getCurrentValue() {
+      return Number.isFinite(levelMeters) ? levelMeters : null;
+    },
+  };
+  return {
+    getUnit: () => 'm',
+    type: () => chain,
+  };
+}
+
+function makeGroup(name) {
+  const calls = { setDemand: [], handleInput: [], turnOff: 0 };
+  return {
+    config: { general: { name } },
+    setDemand: async (value, unit) => { calls.setDemand.push([value, unit]); },
+    handleInput: async (...args) => { calls.handleInput.push(args); },
+    turnOffAllMachines: () => { calls.turnOff += 1; },
+    _calls: calls,
+  };
+}
+
+function makeCtx(levelMeters, opts = {}) {
+  const groups = {
+    a: makeGroup('A'),
+    b: makeGroup('B'),
+    c: makeGroup('C'),
+  };
+  return {
+    measurements: makeMeasurements(levelMeters),
+    config: {
+      control: { levelbased: { minLevel: 1, startLevel: 2, maxLevel: 4, ...(opts.levelbased || {}) } },
+    },
+    logger: { warn: () => {}, debug: () => {}, info: () => {}, error: () => {} },
+    machineGroups: groups,
+    machines: {},
+    levelVariants: ['measured', 'predicted'],
+  };
+}
+
+test('level < minLevel → STOP: turnOffAllMachines on every group, percControl = 0', async () => {
+  const ctx = makeCtx(0.5);
+  const state = { percControl: 42 };
+  await levelBased.run(ctx, state);
+
+  assert.equal(state.percControl, 0);
+  for (const g of Object.values(ctx.machineGroups)) {
+    assert.equal(g._calls.turnOff, 1, 'turnOffAllMachines called once per group');
+    assert.equal(g._calls.setDemand.length, 0, 'no demand sent in stop zone');
+  }
+});
+
+// Pre-engagement: pumps haven't reached startLevel yet, so the rising-edge
+// hysteresis gate hasn't armed. Explicit turnOff (NOT a setDemand(0)), so
+// MGC doesn't kick a pump on at flow.min before the gate is ever passed.
+test('minLevel ≤ level < startLevel (not yet armed) → explicit turnOff', async () => {
+  const ctx = makeCtx(1.5);
+  const state = { percControl: 17 };
+  await levelBased.run(ctx, state);
+
+  assert.equal(state.percControl, 0, 'percControl held at 0 before engagement');
+  for (const g of Object.values(ctx.machineGroups)) {
+    assert.equal(g._calls.turnOff, 1, 'engagement gate calls turnOff');
+    assert.equal(g._calls.setDemand.length, 0, 'no setDemand before engagement');
+  }
+});
+
+test('level == startLevel → percControl == 0 dispatched as setDemand (0 % = min flow, NOT off)', async () => {
+  const ctx = makeCtx(2);
+  const state = { percControl: null };
+  await levelBased.run(ctx, state);
+  assert.equal(state.percControl, 0);
+  // Critical: at startLevel pumps are engaged at min flow, NOT turned off.
+  // The bug we're fixing: the previous soft-turnOff at pct≤0 stopped pumps
+  // at this boundary even though the hysteresis was armed.
+  for (const g of Object.values(ctx.machineGroups)) {
+    assert.equal(g._calls.turnOff, 0, 'do not turnOff at startLevel');
+    assert.equal(g._calls.setDemand.length, 1, 'forward 0 % to MGC');
+    assert.deepEqual(g._calls.setDemand[0], [0, '%']);
+  }
+});
+
+test('level == maxLevel → percControl == 100 (upper edge of ramp)', async () => {
+  const ctx = makeCtx(4);
+  const state = { percControl: null };
+  await levelBased.run(ctx, state);
+  assert.equal(state.percControl, 100);
+});
+
+test('level above maxLevel → percControl clamped at 100 (interpolation limit_input behaviour)', async () => {
+  const ctx = makeCtx(10);
+  const state = { percControl: null };
+  await levelBased.run(ctx, state);
+  // interpolate_lin_single_point clamps via limit_input(o_min, o_max).
+  assert.equal(state.percControl, 100);
+});
+
+test('percControl forwarded to every group via setDemand(pct, "%")', async () => {
+  const ctx = makeCtx(3); // halfway between startLevel=2 and maxLevel=4 → 50%
+  const state = { percControl: null };
+  await levelBased.run(ctx, state);
+
+  assert.equal(state.percControl, 50);
+  for (const g of Object.values(ctx.machineGroups)) {
+    assert.equal(g._calls.setDemand.length, 1, 'one forward per group');
+    assert.deepEqual(g._calls.setDemand[0], [50, '%']);
+    assert.equal(g._calls.handleInput.length, 0, 'no raw handleInput — % goes through setDemand');
+    assert.equal(g._calls.turnOff, 0);
+  }
+});
+
+test('inflowLevel does NOT shape the curve — ramp foot = startLevel regardless', async () => {
+  // startLevel=2, inflowLevel=3, maxLevel=4. Level=2.5 sits between
+  // startLevel and inflowLevel. Pre-fix this was a 0 % "hold zone"; now
+  // the ramp is anchored at startLevel so level=2.5 → 25 %.
+  const ctx = makeCtx(2.5, { levelbased: { minLevel: 1, startLevel: 2, maxLevel: 4 } });
+  ctx.basin = { inflowLevel: 3 };
+  const state = { percControl: null };
+  await levelBased.run(ctx, state);
+  assert.ok(Math.abs(state.percControl - 25) < 1e-9,
+    `expected ~25 % (ramp foot at startLevel, NOT inflowLevel); got ${state.percControl}`);
+});
+
+test('holdLevel > startLevel opts into a hold band [startLevel, holdLevel] at 0 %', async () => {
+  // Same geometry but operator raises holdLevel to 3 so the ramp's 0 %
+  // foot moves up. Level=2.5 should now sit in the hold band: pumps are
+  // engaged but emit 0 % (= MGC's flow.min, NOT turn-off).
+  const ctx = makeCtx(2.5, {
+    levelbased: { minLevel: 1, startLevel: 2, holdLevel: 3, maxLevel: 4 },
+  });
+  const state = { percControl: null };
+  await levelBased.run(ctx, state);
+  assert.equal(state.percControl, 0, '0 % in the configurable hold band');
+  for (const g of Object.values(ctx.machineGroups)) {
+    assert.equal(g._calls.turnOff, 0, 'engaged — must not turnOff in hold band');
+    assert.deepEqual(g._calls.setDemand[0], [0, '%']);
+  }
+});
+
+test('falling-edge keep-alive [stopLevel, startLevel] keeps pumps spinning', async () => {
+  // stopLevel = 0.5, startLevel = 2. Once armed (level ≥ startLevel), the
+  // band [0.5, 2) stays engaged at deadZoneKeepAlivePercent (default 1 %).
+  const ctx = makeCtx(1.5, {
+    levelbased: { minLevel: 0.1, startLevel: 2, stopLevel: 0.5, maxLevel: 4 },
+  });
+  // Pre-arm: simulate that level previously crossed startLevel.
+  ctx.host = { _stopHystRunning: true };
+  const state = { percControl: null };
+  await levelBased.run(ctx, state);
+  assert.equal(state.percControl, 1, 'keep-alive emits 1 % in the [stop, start) band');
+  for (const g of Object.values(ctx.machineGroups)) {
+    assert.equal(g._calls.turnOff, 0);
+    assert.deepEqual(g._calls.setDemand[0], [1, '%']);
+  }
+});
+
+test('no valid level → warns and returns without mutating percControl or calling groups', async () => {
+  const ctx = makeCtx(NaN);
+  let warned = false;
+  ctx.logger.warn = () => { warned = true; };
+  const state = { percControl: 7 };
+  await levelBased.run(ctx, state);
+
+  assert.equal(warned, true);
+  assert.equal(state.percControl, 7);
+  for (const g of Object.values(ctx.machineGroups)) {
+    assert.equal(g._calls.turnOff, 0);
+    assert.equal(g._calls.handleInput.length, 0);
+  }
+});
+
+// Regression: a station engaged above startLevel but with no machine group
+// registered (e.g. the Port 2 parent↔group registration was dropped by a
+// partial redeploy) computes a real demand that goes nowhere. The strategy
+// must surface this once, not fail silently. See the 2026-05-27 "PS not
+// reacting to level" trace.
+test('engaged with NO machine group registered → warns once (throttled via host)', async () => {
+  const ctx = makeCtx(3, { levelbased: { holdLevel: 2 } }); // level 3 > startLevel 2 → engaged
+  ctx.machineGroups = {};                                   // registration lost
+  ctx.host = {};
+  const warns = [];
+  ctx.logger.warn = (m) => warns.push(m);
+
+  const state = { percControl: 0 };
+  await levelBased.run(ctx, state);
+
+  assert.ok(state.percControl > 0, 'demand is computed even though there is no group');
+  assert.equal(warns.length, 1, 'warns exactly once');
+  assert.match(warns[0], /no machine group is registered/i);
+  assert.equal(ctx.host._warnedNoMachineGroup, true);
+
+  // Subsequent ticks while still group-less stay quiet (no log spam).
+  await levelBased.run(ctx, state);
+  assert.equal(warns.length, 1, 'throttled: no repeat warning on the next tick');
+});
+
+test('warning re-arms after a group reappears then disappears again', async () => {
+  const ctx = makeCtx(3, { levelbased: { holdLevel: 2 } });
+  ctx.host = {};
+  const warns = [];
+  ctx.logger.warn = (m) => warns.push(m);
+  const state = { percControl: 0 };
+
+  ctx.machineGroups = {};
+  await levelBased.run(ctx, state);
+  assert.equal(warns.length, 1);
+
+  // Group registers again → flag clears, no new warning.
+  ctx.machineGroups = { a: makeGroup('A') };
+  await levelBased.run(ctx, state);
+  assert.equal(warns.length, 1);
+  assert.equal(ctx.host._warnedNoMachineGroup, false);
+
+  // Group lost again → warns once more.
+  ctx.machineGroups = {};
+  await levelBased.run(ctx, state);
+  assert.equal(warns.length, 2, 're-armed after recovery');
+});

test/basic/control-manual.basic.test.js

@@ -0,0 +1,71 @@
+// Unit tests for the manual control strategy.
+// Run with: node --test test/basic/control-manual.basic.test.js
+
+const test = require('node:test');
+const assert = require('node:assert/strict');
+
+const { UnitPolicy } = require('generalFunctions');
+const manual = require('../../src/control/manual');
+
+const unitPolicy = UnitPolicy.declare({
+  canonical: { flow: 'm3/s' },
+  output:    { flow: 'm3/s' },
+  requireUnitForTypes: [],
+});
+
+function makeGroup(name) {
+  const calls = { handleInput: [] };
+  return {
+    config: { general: { name } },
+    handleInput: async (...args) => { calls.handleInput.push(args); },
+    _calls: calls,
+  };
+}
+
+function makeMachine(name) {
+  const calls = { handleInput: [] };
+  return {
+    config: { general: { name } },
+    handleInput: async (...args) => { calls.handleInput.push(args); },
+    _calls: calls,
+  };
+}
+
+function makeLogger() {
+  return { info: () => {}, debug: () => {}, warn: () => {}, error: () => {} };
+}
+
+test('forwardDemand calls handleInput("parent", canonical m3/s demand) on every machine group', async () => {
+  const groups = { a: makeGroup('A'), b: makeGroup('B'), c: makeGroup('C') };
+  const ctx = { machineGroups: groups, machines: {}, unitPolicy, logger: makeLogger() };
+
+  await manual.forwardDemand(ctx, 360);
+
+  for (const g of Object.values(groups)) {
+    assert.equal(g._calls.handleInput.length, 1);
+    assert.deepEqual(g._calls.handleInput[0], ['parent', 0.1]);
+  }
+});
+
+test('forwardDemand with no machineGroups but direct machines splits demand evenly', async () => {
+  const machines = { m1: makeMachine('M1'), m2: makeMachine('M2'), m3: makeMachine('M3'), m4: makeMachine('M4') };
+  const ctx = { machineGroups: {}, machines, logger: makeLogger() };
+
+  await manual.forwardDemand(ctx, 80);
+
+  for (const m of Object.values(machines)) {
+    assert.equal(m._calls.handleInput.length, 1);
+    assert.deepEqual(m._calls.handleInput[0], ['parent', 'execMovement', 20]);
+  }
+});
+
+test('run() is a no-op (manual mode is event-driven)', async () => {
+  const groups = { a: makeGroup('A') };
+  const ctx = { machineGroups: groups, machines: {}, unitPolicy, logger: makeLogger() };
+  await manual.run(ctx, { percControl: 0 });
+  assert.equal(groups.a._calls.handleInput.length, 0);
+});
+
+test('manual exports name === "manual"', () => {
+  assert.equal(manual.name, 'manual');
+});

test/basic/flowAggregator.basic.test.js

@@ -0,0 +1,183 @@
+// Basic tests for FlowAggregator. Pure node:test, no Node-RED runtime.
+
+const test = require('node:test');
+const assert = require('node:assert/strict');
+
+const { MeasurementContainer } = require('generalFunctions');
+const FlowAggregator = require('../../src/measurement/flowAggregator');
+
+function makeBasin() {
+  // Constant-cross-section basin: 50 m3 / 5 m height ⇒ surfaceArea = 10 m2.
+  const surfaceArea = 10;
+  return {
+    surfaceArea,
+    minVol: 2,
+    maxVol: 50,
+    maxVolAtOverflow: 45,        // overflow at 4.5 m
+    minVolAtOutflow: 2,
+    minVolAtInflow: 30,
+    overflowLevel: 4.5,
+    outflowLevel: 0.2,
+    inflowLevel: 3,
+  };
+}
+
+function makeMeasurements() {
+  return new MeasurementContainer({
+    autoConvert: true,
+    preferredUnits: { flow: 'm3/s', netFlowRate: 'm3/s', level: 'm', volume: 'm3' },
+  });
+}
+
+function makeAggregator(overrides = {}) {
+  const measurements = overrides.measurements || makeMeasurements();
+  const basin = overrides.basin || makeBasin();
+  // Seed predicted volume at minVol so update() has a starting point.
+  measurements.type('volume').variant('predicted').position('atequipment')
+    .value(basin.minVol).unit('m3');
+  const fa = new FlowAggregator({ measurements, basin, flowThreshold: 1e-4 });
+  return { fa, measurements, basin };
+}
+
+test('FlowAggregator.update integrates inflow-outflow over delta-t', async () => {
+  const { fa, measurements } = makeAggregator();
+  // Net flow = 0.01 m3/s (in) - 0.005 m3/s (out) = 0.005 m3/s.
+  const t0 = Date.now() - 10_000; // 10 s ago
+  measurements.type('flow').variant('predicted').position('in').child('src')
+    .value(0.01, t0, 'm3/s');
+  measurements.type('flow').variant('predicted').position('out').child('snk')
+    .value(0.005, t0, 'm3/s');
+
+  // Force the integrator to know we are starting 10 s in the past.
+  fa._predictedFlowState = { inflow: 0, outflow: 0, lastTimestamp: t0 };
+  fa.update();
+
+  const vol = measurements.type('volume').variant('predicted').position('atequipment')
+    .getCurrentValue('m3');
+  // Expect minVol(2) + 0.005 * ~10 ≈ 2.05 m3. Allow slack for clock jitter.
+  assert.ok(vol > 2.04 && vol < 2.06, `volume after integration was ${vol}`);
+});
+
+test('FlowAggregator.update integrates measured inflow when predicted side is empty', async () => {
+  // Regression: a real upstream sensor writes `flow.measured.upstream.<id>`
+  // (the measurement node hard-codes variant='measured'), but the integrator
+  // used to read variant='predicted' only — so level stayed flat while the
+  // status row reported +N m³/h. The fix mirrors selectBestNetFlow's
+  // variant precedence per side.
+  const { fa, measurements } = makeAggregator();
+  const t0 = Date.now() - 10_000;
+  // Measured inflow at 'upstream' (one of the inflow position aliases),
+  // no outflow side at all.
+  measurements.type('flow').variant('measured').position('upstream').child('sensor-A')
+    .value(0.01, t0, 'm3/s');
+
+  fa._predictedFlowState = { inflow: 0, outflow: 0, lastTimestamp: t0 };
+  fa.update();
+
+  const vol = measurements.type('volume').variant('predicted').position('atequipment')
+    .getCurrentValue('m3');
+  // Expect minVol(2) + 0.01 × ~10 ≈ 2.10 m3.
+  assert.ok(vol > 2.09 && vol < 2.11, `measured inflow did not integrate: vol=${vol}`);
+});
+
+test('FlowAggregator.update mixes measured inflow with predicted outflow', async () => {
+  // Realistic mix: real upstream sensor (measured) + pump-curve outflow
+  // (predicted). The picker resolves each side independently, so the net
+  // balance uses both.
+  const { fa, measurements } = makeAggregator();
+  const t0 = Date.now() - 10_000;
+  measurements.type('flow').variant('measured').position('upstream').child('sensor-A')
+    .value(0.01, t0, 'm3/s');
+  measurements.type('flow').variant('predicted').position('downstream').child('pump-A')
+    .value(0.004, t0, 'm3/s');
+
+  fa._predictedFlowState = { inflow: 0, outflow: 0, lastTimestamp: t0 };
+  fa.update();
+
+  const vol = measurements.type('volume').variant('predicted').position('atequipment')
+    .getCurrentValue('m3');
+  // minVol(2) + (0.01 - 0.004) × ~10 ≈ 2.06 m3.
+  assert.ok(vol > 2.05 && vol < 2.07, `mixed-variant integration produced vol=${vol}`);
+});
+
+test('FlowAggregator.selectBestNetFlow prefers measured over predicted', async () => {
+  const { fa, measurements } = makeAggregator();
+  measurements.type('flow').variant('measured').position('in').child('m')
+    .value(0.02, Date.now(), 'm3/s');
+  measurements.type('flow').variant('measured').position('out').child('m')
+    .value(0.01, Date.now(), 'm3/s');
+  measurements.type('flow').variant('predicted').position('in').child('p')
+    .value(0.5, Date.now(), 'm3/s');
+  measurements.type('flow').variant('predicted').position('out').child('p')
+    .value(0.0, Date.now(), 'm3/s');
+
+  const r = fa.selectBestNetFlow();
+  assert.equal(r.source, 'measured');
+  assert.ok(Math.abs(r.value - 0.01) < 1e-9);
+  assert.equal(r.direction, 'filling');
+});
+
+test('FlowAggregator.selectBestNetFlow falls back to level rate when no flow', async () => {
+  const { fa, measurements, basin } = makeAggregator();
+  // Seed two level samples 2 s apart, rising 0.1 m → rate 0.05 m/s
+  // → net flow = 0.05 * 10 m2 = 0.5 m3/s (filling).
+  const t0 = Date.now() - 2_000;
+  const t1 = Date.now();
+  measurements.type('level').variant('measured').position('atequipment').child('default')
+    .value(1.0, t0, 'm');
+  measurements.type('level').variant('measured').position('atequipment').child('default')
+    .value(1.1, t1, 'm');
+
+  const r = fa.selectBestNetFlow();
+  assert.ok(r.source.startsWith('level:'), `source was ${r.source}`);
+  assert.equal(r.direction, 'filling');
+  assert.ok(Math.abs(r.value - basin.surfaceArea * 0.05) < 1e-3, `net flow was ${r.value}`);
+});
+
+test('FlowAggregator.deriveDirection threshold semantics', async () => {
+  const { fa } = makeAggregator();
+  assert.equal(fa.deriveDirection(0), 'steady');
+  assert.equal(fa.deriveDirection(fa.flowThreshold * 2), 'filling');
+  assert.equal(fa.deriveDirection(-fa.flowThreshold * 2), 'draining');
+  assert.equal(fa.deriveDirection(fa.flowThreshold * 0.5), 'steady');
+  assert.equal(fa.deriveDirection(-fa.flowThreshold * 0.5), 'steady');
+});
+
+test('FlowAggregator.computeRemainingTime — filling uses overflow ceiling', async () => {
+  const { fa, measurements, basin } = makeAggregator();
+  measurements.type('level').variant('predicted').position('atequipment')
+    .value(2.0, Date.now(), 'm');
+  // Net 0.05 m3/s upward; remaining height = 4.5 - 2.0 = 2.5 m.
+  // seconds = 2.5 * 10 / 0.05 = 500 s.
+  const r = fa.computeRemainingTime({ value: 0.05, source: 'measured', direction: 'filling' });
+  assert.ok(Math.abs(r.seconds - 500) < 1e-6, `seconds was ${r.seconds}`);
+  assert.equal(typeof r.source, 'string');
+});
+
+test('FlowAggregator.computeRemainingTime — draining uses outflow floor', async () => {
+  const { fa, measurements } = makeAggregator();
+  measurements.type('level').variant('predicted').position('atequipment')
+    .value(1.0, Date.now(), 'm');
+  // Net -0.05 m3/s; remaining height = 1.0 - 0.2 = 0.8 m.
+  // seconds = 0.8 * 10 / 0.05 = 160 s.
+  const r = fa.computeRemainingTime({ value: -0.05, source: 'measured', direction: 'draining' });
+  assert.ok(Math.abs(r.seconds - 160) < 1e-6, `seconds was ${r.seconds}`);
+});
+
+test('FlowAggregator.snapshot exposes the expected shape', async () => {
+  const { fa, measurements } = makeAggregator();
+  measurements.type('flow').variant('measured').position('in').child('m')
+    .value(0.02, Date.now(), 'm3/s');
+  fa.tick();
+  const snap = fa.snapshot();
+  assert.ok(Object.prototype.hasOwnProperty.call(snap, 'direction'));
+  assert.ok(Object.prototype.hasOwnProperty.call(snap, 'netFlow'));
+  assert.ok(Object.prototype.hasOwnProperty.call(snap, 'flowSource'));
+  assert.ok(Object.prototype.hasOwnProperty.call(snap, 'secondsRemaining'));
+});
+
+test('FlowAggregator.computeRemainingTime — below threshold returns null seconds', async () => {
+  const { fa } = makeAggregator();
+  const r = fa.computeRemainingTime({ value: 0, source: null, direction: 'steady' });
+  assert.equal(r.seconds, null);
+});

test/basic/measurementRouter.basic.test.js

@@ -0,0 +1,106 @@
+// Basic tests for MeasurementRouter.
+
+const test = require('node:test');
+const assert = require('node:assert/strict');
+
+const { MeasurementContainer, coolprop } = require('generalFunctions');
+const MeasurementRouter = require('../../src/measurement/measurementRouter');
+
+// CoolProp is async-init; ensure it's warm before any pressure-conversion
+// test runs.
+test.before(async () => {
+  await coolprop.init({ refrigerant: 'Water' });
+});
+
+function makeBasin() {
+  return {
+    surfaceArea: 10,
+    minVol: 2,
+    maxVol: 50,
+    maxVolAtOverflow: 45,
+    overflowLevel: 4.5,
+    outflowLevel: 0.2,
+    inflowLevel: 3,
+  };
+}
+
+function makeMeasurements() {
+  return new MeasurementContainer({
+    autoConvert: true,
+    preferredUnits: { flow: 'm3/s', level: 'm', volume: 'm3' },
+  });
+}
+
+function fakeLogger() {
+  const calls = { warn: [], info: [], error: [], debug: [] };
+  return {
+    warn: (m) => calls.warn.push(m),
+    info: (m) => calls.info.push(m),
+    error: (m) => calls.error.push(m),
+    debug: (m) => calls.debug.push(m),
+    _calls: calls,
+  };
+}
+
+test('onLevelMeasurement writes volume + percent', async () => {
+  const measurements = makeMeasurements();
+  const basin = makeBasin();
+  const router = new MeasurementRouter({ measurements, basin });
+
+  router.onLevelMeasurement('atequipment', 2.5, { unit: 'm', timestamp: Date.now() });
+
+  const lvl = measurements.type('level').variant('measured').position('atequipment').getCurrentValue('m');
+  assert.ok(Math.abs(lvl - 2.5) < 1e-9);
+
+  const vol = measurements.type('volume').variant('measured').position('atequipment').getCurrentValue('m3');
+  // 2.5 m * 10 m² = 25 m3.
+  assert.ok(Math.abs(vol - 25) < 1e-9, `volume was ${vol}`);
+
+  const pct = measurements.type('volumePercent').variant('measured').position('atequipment').getCurrentValue('%');
+  // (25 - 2) / (45 - 2) * 100 ≈ 53.488...
+  assert.ok(pct > 53 && pct < 54, `percent was ${pct}`);
+});
+
+test('onPressureMeasurement falls back to assumed temperature and warns', async () => {
+  const measurements = makeMeasurements();
+  const basin = makeBasin();
+  const logger = fakeLogger();
+  const router = new MeasurementRouter({ measurements, basin, logger });
+
+  // No temperature seeded — must fall back to assumed 15C.
+  measurements.type('pressure').variant('measured').position('atequipment')
+    .value(20000, Date.now(), 'Pa');
+  router.onPressureMeasurement('atequipment', 20000, { unit: 'Pa', timestamp: Date.now() });
+
+  const warned = logger._calls.warn.some((m) => /assuming 15C|temperature/i.test(m));
+  assert.ok(warned, 'expected a warn about missing temperature');
+
+  const assumedT = measurements.type('temperature').variant('assumed').position('atequipment')
+    .getCurrentValue('K');
+  assert.ok(Number.isFinite(assumedT), 'assumed temperature was not stored');
+
+  const lvl = measurements.type('level').variant('predicted').position('atequipment')
+    .getCurrentValue('m');
+  // 20000 Pa / (~999 kg/m³ * 9.80665) ≈ 2.04 m.
+  assert.ok(lvl > 1.9 && lvl < 2.2, `derived level was ${lvl}`);
+});
+
+test('route() dispatches by measurement type', async () => {
+  const measurements = makeMeasurements();
+  const basin = makeBasin();
+  const router = new MeasurementRouter({ measurements, basin });
+
+  const handledLevel = router.route('level', 1.5, 'atequipment', { unit: 'm' });
+  assert.equal(handledLevel, true);
+  const lvl = measurements.type('level').variant('measured').position('atequipment').getCurrentValue('m');
+  assert.ok(Math.abs(lvl - 1.5) < 1e-9);
+
+  // Unknown type returns false (no dispatch).
+  const handledOther = router.route('flow', 0.1, 'in', {});
+  assert.equal(handledOther, false);
+});
+
+test('constructor rejects missing context fields', async () => {
+  assert.throws(() => new MeasurementRouter({}));
+  assert.throws(() => new MeasurementRouter({ measurements: makeMeasurements() }));
+});

test/basic/nodeClass-config.test.js

@@ -0,0 +1,74 @@
+const test = require('node:test');
+const assert = require('node:assert/strict');
+
+const NodeClass = require('../../src/nodeClass');
+
+function loadConfig(uiConfig = {}) {
+  const ctx = { name: 'pumpingStation' };
+  NodeClass.prototype._loadConfig.call(ctx, {
+    name: 'PS Config Test',
+    basinVolume: 80,
+    basinHeight: 8,
+    inflowLevel: 3.2,
+    outflowLevel: 0.4,
+    overflowLevel: 7.4,
+    inletPipeDiameter: 0.5,
+    outletPipeDiameter: 0.35,
+    refHeight: 'NAP',
+    minHeightBasedOn: 'outlet',
+    basinBottomRef: -1.2,
+    maxInflowRate: 300,
+    staticHead: 11,
+    maxDischargeHead: 22,
+    pipelineLength: 120,
+    defaultFluid: 'wastewater',
+    temperatureReferenceDegC: 16,
+    controlMode: 'levelbased',
+    minLevel: 0.8,
+    startLevel: 2,
+    maxLevel: 6.5,
+    levelCurveType: 'log',
+    logCurveFactor: 7,
+    enableDryRunProtection: true,
+    dryRunThresholdPercent: 3,
+    enableHighVolumeSafety: true,
+    highVolumeSafetyThresholdPercent: 96,
+    timeleftToFullOrEmptyThresholdSeconds: 60,
+    processOutputFormat: 'process',
+    dbaseOutputFormat: 'influxdb',
+    ...uiConfig,
+  }, { id: 'node-1' });
+  return ctx.config;
+}
+
+test('nodeClass config mapping — basin, hydraulics, mode and safety fields', () => {
+  const cfg = loadConfig();
+
+  assert.equal(cfg.basin.inletPipeDiameter, 0.5);
+  assert.equal(cfg.basin.outletPipeDiameter, 0.35);
+  assert.equal(cfg.hydraulics.maxInflowRate, 300);
+  assert.equal(cfg.hydraulics.staticHead, 11);
+  assert.equal(cfg.hydraulics.maxDischargeHead, 22);
+  assert.equal(cfg.hydraulics.pipelineLength, 120);
+  assert.equal(cfg.hydraulics.defaultFluid, 'wastewater');
+  assert.equal(cfg.hydraulics.temperatureReferenceDegC, 16);
+  assert.equal(cfg.control.mode, 'levelbased');
+  assert.equal(cfg.control.levelbased.curveType, 'log');
+  assert.equal(cfg.control.levelbased.logCurveFactor, 7);
+  assert.equal(cfg.safety.enableHighVolumeSafety, true);
+  assert.equal(cfg.safety.highVolumeSafetyThresholdPercent, 96);
+  assert.equal(cfg.output.process, 'process');
+  assert.equal(cfg.output.dbase, 'influxdb');
+});
+
+test('nodeClass config mapping — accepts deprecated overfill UI fields', () => {
+  const cfg = loadConfig({
+    enableHighVolumeSafety: undefined,
+    highVolumeSafetyThresholdPercent: undefined,
+    enableOverfillProtection: false,
+    overfillThresholdPercent: 91,
+  });
+
+  assert.equal(cfg.safety.enableHighVolumeSafety, false);
+  assert.equal(cfg.safety.highVolumeSafetyThresholdPercent, 91);
+});

test/basic/replay-on-subscribe.basic.test.js

@@ -0,0 +1,81 @@
+// Late-subscriber replay: a measurement child that already holds a value when
+// the pumpingStation registers it (e.g. a once-only inject that fired during
+// startup before the parent subscribed) must still surface on Port 0. The
+// emitter only delivers future updates, so _subscribeMeasurement seeds from the
+// child's current sample.
+
+const test = require('node:test');
+const assert = require('node:assert/strict');
+const EventEmitter = require('node:events');
+
+const PumpingStation = require('../../src/specificClass');
+const { MeasurementContainer, configManager } = require('generalFunctions');
+
+function makePsConfig() {
+  const cm = new configManager();
+  return cm.buildConfig('pumpingStation', { name: 'PS' }, 'ps-replay', {
+    basin: { volume: 50, height: 5, inflowLevel: 3, outflowLevel: 0.2, overflowLevel: 4.5 },
+    hydraulics: { minHeightBasedOn: 'outlet' },
+    control: {
+      mode: 'levelbased',
+      allowedModes: new Set(['levelbased']),
+      levelbased: { minLevel: 1, startLevel: 2, maxLevel: 4, curveType: 'linear' },
+    },
+    safety: {},
+  });
+}
+
+function makeFlowMeasurementChild(id = 'meas-replay') {
+  const measurements = new MeasurementContainer({ autoConvert: true, preferredUnits: { flow: 'm3/s' } });
+  assert.ok(typeof measurements.emitter?.on === 'function');
+  return {
+    id,
+    source: {
+      config: {
+        general: { id, name: id },
+        functionality: { softwareType: 'measurement', positionVsParent: 'upstream' },
+        asset: { type: 'flow' },
+      },
+      measurements,
+    },
+  };
+}
+
+test('value written BEFORE registration is replayed on subscribe (once-inject timing)', () => {
+  const ps = new PumpingStation(makePsConfig());
+  const child = makeFlowMeasurementChild();
+
+  // Child already holds a value — emitted into the void before the parent existed.
+  child.source.measurements
+    .type('flow').variant('measured').position('upstream')
+    .value(50, Date.now(), 'm3/h');
+
+  // Parent registers AFTER the value is present. Without replay it would only
+  // catch future emits and surface nothing.
+  ps.childRegistrationUtils.registerChild(child.source, 'upstream');
+
+  const out = ps.getOutput();
+  const upstreamKeys = Object.keys(out).filter((k) => k.startsWith('flow.measured.upstream'));
+  assert.ok(upstreamKeys.length > 0, 'parent must surface flow.measured.upstream.* after late subscribe');
+});
+
+test('no stored value → nothing replayed, no crash', () => {
+  const ps = new PumpingStation(makePsConfig());
+  const child = makeFlowMeasurementChild('empty-child');
+  // Register with an empty child container; replay must be a safe no-op.
+  assert.doesNotThrow(() => ps.childRegistrationUtils.registerChild(child.source, 'upstream'));
+  const out = ps.getOutput();
+  const upstreamKeys = Object.keys(out).filter((k) => k.startsWith('flow.measured.upstream'));
+  assert.equal(upstreamKeys.length, 0, 'no upstream key when child has no value');
+});
+
+test('future emits still delivered after subscribe (listener intact)', () => {
+  const ps = new PumpingStation(makePsConfig());
+  const child = makeFlowMeasurementChild('streaming-child');
+  ps.childRegistrationUtils.registerChild(child.source, 'upstream');
+  // Emit AFTER registration — the normal streaming-sensor path.
+  child.source.measurements.type('flow').variant('measured').position('upstream').value(30, Date.now(), 'm3/h');
+  const out = ps.getOutput();
+  const upstreamKeys = Object.keys(out).filter((k) => k.startsWith('flow.measured.upstream'));
+  assert.ok(upstreamKeys.length > 0, 'normal post-subscribe emit still surfaces');
+});

test/basic/safetyController.basic.test.js

@@ -0,0 +1,230 @@
+'use strict';
+
+const test = require('node:test');
+const assert = require('node:assert');
+const SafetyController = require('../../src/safety/safetyController');
+
+// --------------------------- fakes ---------------------------
+
+function fakeMeasurements(values) {
+  // values keyed by `${type}.${variant}.${position}` → number|null
+  return {
+    getUnit: (_type) => 'm3',
+    type(t) {
+      return {
+        variant(v) {
+          return {
+            position(p) {
+              return {
+                getCurrentValue() {
+                  const k = `${t}.${v}.${p}`;
+                  return values[k];
+                },
+              };
+            },
+          };
+        },
+      };
+    },
+  };
+}
+
+function makeMachine(positionVsParent, operational = true) {
+  const calls = [];
+  return {
+    config: { functionality: { positionVsParent } },
+    _isOperationalState: () => operational,
+    handleInput: (...args) => calls.push(args),
+    calls,
+  };
+}
+
+function makeStation() {
+  const calls = [];
+  return {
+    handleInput: (...args) => calls.push(args),
+    calls,
+  };
+}
+
+function makeGroup() {
+  const calls = [];
+  return {
+    turnOffAllMachines: () => calls.push(['turnOffAllMachines']),
+    calls,
+  };
+}
+
+function makeLogger() {
+  const warns = [];
+  return {
+    warn: (msg) => warns.push(msg),
+    info: () => {},
+    error: () => {},
+    debug: () => {},
+    warns,
+  };
+}
+
+function makeCtx({
+  vol = 50,
+  basin = { minVol: 10, maxVolAtOverflow: 90 },
+  safety = {
+    enableDryRunProtection: true,
+    enableOverfillProtection: true,
+    dryRunThresholdPercent: 10,
+    overfillThresholdPercent: 95,
+    timeleftToFullOrEmptyThresholdSeconds: 0,
+  },
+  machines = {},
+  stations = {},
+  machineGroups = {},
+} = {}) {
+  const measurements = fakeMeasurements({
+    'volume.measured.atequipment': vol,
+    'volume.predicted.atequipment': vol,
+  });
+  const logger = makeLogger();
+  return {
+    ctx: { measurements, basin, config: { safety }, logger, machines, stations, machineGroups },
+    logger,
+  };
+}
+
+// --------------------------- tests ---------------------------
+
+test('normal volume + filling → not blocked, no shutdowns', () => {
+  const m = makeMachine('downstream');
+  const { ctx } = makeCtx({ vol: 50, machines: { m } });
+  const sc = new SafetyController(ctx);
+  const r = sc.evaluate({ direction: 'filling', secondsRemaining: 1000 });
+  assert.deepStrictEqual(r, { blocked: false, reason: null, triggered: [] });
+  assert.strictEqual(m.calls.length, 0);
+});
+
+test('dry-run trigger: low volume + draining → blocked, downstream shut down', () => {
+  const down = makeMachine('downstream');
+  const at = makeMachine('atequipment');
+  const up = makeMachine('upstream');
+  const station = makeStation();
+  const group = makeGroup();
+  const { ctx } = makeCtx({
+    vol: 5, // below 10 * (1 + 10/100) = 11
+    machines: { down, at, up },
+    stations: { station },
+    machineGroups: { group },
+  });
+  const sc = new SafetyController(ctx);
+  const r = sc.evaluate({ direction: 'draining', secondsRemaining: 1000 });
+  assert.strictEqual(r.blocked, true);
+  assert.strictEqual(r.reason, 'dry-run');
+  assert.ok(r.triggered.includes('dry-run-volume'));
+  assert.deepStrictEqual(down.calls[0], ['parent', 'execSequence', 'shutdown']);
+  assert.deepStrictEqual(at.calls[0], ['parent', 'execSequence', 'shutdown']);
+  assert.strictEqual(up.calls.length, 0, 'upstream untouched in dry-run');
+  assert.deepStrictEqual(station.calls[0], ['parent', 'execSequence', 'shutdown']);
+  assert.deepStrictEqual(group.calls[0], ['turnOffAllMachines']);
+});
+
+test('dry-run does NOT trigger when filling', () => {
+  const down = makeMachine('downstream');
+  const { ctx } = makeCtx({ vol: 5, machines: { down } });
+  const sc = new SafetyController(ctx);
+  const r = sc.evaluate({ direction: 'filling', secondsRemaining: 1000 });
+  // Filling at vol=5 (below overfill threshold 85.5) → no trigger at all.
+  assert.strictEqual(r.blocked, false);
+  assert.strictEqual(r.reason, null);
+  assert.strictEqual(down.calls.length, 0);
+});
+
+test('overfill trigger: high volume + filling → not blocked, only upstream + station shut down', () => {
+  const down = makeMachine('downstream');
+  const at = makeMachine('atequipment');
+  const up = makeMachine('upstream');
+  const station = makeStation();
+  const group = makeGroup();
+  const { ctx } = makeCtx({
+    vol: 88, // above 90 * 0.95 = 85.5
+    machines: { down, at, up },
+    stations: { station },
+    machineGroups: { group },
+  });
+  const sc = new SafetyController(ctx);
+  const r = sc.evaluate({ direction: 'filling', secondsRemaining: 1000 });
+  assert.strictEqual(r.blocked, false, 'overfill must NOT block control');
+  assert.strictEqual(r.reason, 'overfill');
+  assert.ok(r.triggered.includes('overfill-volume'));
+  assert.deepStrictEqual(up.calls[0], ['parent', 'execSequence', 'shutdown']);
+  assert.strictEqual(down.calls.length, 0, 'downstream must keep running');
+  assert.strictEqual(at.calls.length, 0, 'atequipment must keep running');
+  assert.deepStrictEqual(station.calls[0], ['parent', 'execSequence', 'shutdown']);
+  assert.strictEqual(group.calls.length, 0, 'machine groups must keep draining');
+});
+
+test('no volume data → blocked, all machines shut down (panic)', () => {
+  const a = makeMachine('downstream');
+  const b = makeMachine('upstream');
+  const c = makeMachine('atequipment');
+  // override measurements to return null
+  const measurements = {
+    getUnit: () => 'm3',
+    type: () => ({ variant: () => ({ position: () => ({ getCurrentValue: () => null }) }) }),
+  };
+  const ctx = {
+    measurements,
+    basin: { minVol: 10, maxVolAtOverflow: 90 },
+    config: { safety: { enableDryRunProtection: true, enableOverfillProtection: true, dryRunThresholdPercent: 10, overfillThresholdPercent: 95 } },
+    logger: makeLogger(),
+    machines: { a, b, c },
+    stations: {},
+    machineGroups: {},
+  };
+  const sc = new SafetyController(ctx);
+  const r = sc.evaluate({ direction: 'steady', secondsRemaining: null });
+  assert.strictEqual(r.blocked, true);
+  assert.strictEqual(r.reason, 'no-volume-data');
+  assert.deepStrictEqual(a.calls[0], ['parent', 'execSequence', 'shutdown']);
+  assert.deepStrictEqual(b.calls[0], ['parent', 'execSequence', 'shutdown']);
+  assert.deepStrictEqual(c.calls[0], ['parent', 'execSequence', 'shutdown']);
+});
+
+test('time-based protection: short remainingTime while draining triggers dry-run shutdowns', () => {
+  const down = makeMachine('downstream');
+  const { ctx } = makeCtx({
+    vol: 50, // well above dry-run vol threshold
+    safety: {
+      enableDryRunProtection: false, // volume rule disabled
+      enableOverfillProtection: false,
+      dryRunThresholdPercent: 10,
+      overfillThresholdPercent: 95,
+      timeleftToFullOrEmptyThresholdSeconds: 60,
+    },
+    machines: { down },
+  });
+  const sc = new SafetyController(ctx);
+  const r = sc.evaluate({ direction: 'draining', secondsRemaining: 30 });
+  assert.strictEqual(r.blocked, true);
+  assert.strictEqual(r.reason, 'dry-run');
+  assert.ok(r.triggered.includes('time-remaining'));
+  assert.deepStrictEqual(down.calls[0], ['parent', 'execSequence', 'shutdown']);
+});
+
+test('disabled rules: enableDryRunProtection=false + draining low → no trigger', () => {
+  const down = makeMachine('downstream');
+  const { ctx } = makeCtx({
+    vol: 5, // would normally trigger dry-run
+    safety: {
+      enableDryRunProtection: false,
+      enableOverfillProtection: false,
+      dryRunThresholdPercent: 10,
+      overfillThresholdPercent: 95,
+      timeleftToFullOrEmptyThresholdSeconds: 0,
+    },
+    machines: { down },
+  });
+  const sc = new SafetyController(ctx);
+  const r = sc.evaluate({ direction: 'draining', secondsRemaining: 1000 });
+  assert.strictEqual(r.blocked, false);
+  assert.strictEqual(r.reason, null);
+  assert.strictEqual(down.calls.length, 0);
+});

test/basic/specificClass.test.js

@@ -0,0 +1,656 @@
+// Basic unit tests for PumpingStation (domain logic, no Node-RED).
+// Run with:  node --test test/basic/specificClass.test.js
+
+const test = require('node:test');
+const assert = require('node:assert/strict');
+
+const { MeasurementContainer } = require('generalFunctions');
+const PumpingStation = require('../../src/specificClass');
+
+// machineGroups is a registry-backed getter (declareChildGetter) — direct
+// assignment is no longer possible. Tests inject mock groups through the
+// real registration handshake so the registry remains the source of truth.
+function registerMockGroup(ps, id, behavior = {}) {
+  const calls = { setDemand: [], handleInput: [], turnOff: 0 };
+  const mock = {
+    config: {
+      general: { id, name: id },
+      functionality: { softwareType: 'machinegroup', positionVsParent: 'atEquipment' },
+      asset: { category: 'controller' },
+    },
+    measurements: {
+      emitter: { on: () => {} },
+      setChildId: () => {}, setChildName: () => {}, setParentRef: () => {},
+    },
+    setDemand: behavior.setDemand
+      || (async (value, unit) => { calls.setDemand.push([value, unit]); }),
+    handleInput: behavior.handleInput
+      || (async (...args) => { calls.handleInput.push(args); }),
+    turnOffAllMachines: behavior.turnOffAllMachines
+      || (() => { calls.turnOff += 1; }),
+    _calls: calls,
+  };
+  ps.childRegistrationUtils.registerChild(mock, 'atEquipment');
+  return mock;
+}
+
+// Standard config shape. Override any section by passing { section: {...} }.
+function makeConfig(overrides = {}) {
+  const base = {
+    general: {
+      name: 'TestStation',
+      id: 'ps-test',
+      unit: 'm3/h',
+      logging: { enabled: false, logLevel: 'error' },
+      flowThreshold: 1e-4,
+    },
+    functionality: {
+      softwareType: 'pumpingStation',
+      role: 'stationcontroller',
+      positionVsParent: 'atEquipment',
+    },
+    basin: {
+      volume: 50,
+      height: 5,
+      inflowLevel: 3,
+      outflowLevel: 0.2,
+      overflowLevel: 4.5,
+      inletPipeDiameter: 0.4,
+      outletPipeDiameter: 0.3,
+    },
+    hydraulics: {
+      refHeight: 'NAP',
+      basinBottomRef: 0,
+      minHeightBasedOn: 'outlet',
+    },
+    control: {
+      mode: 'levelbased',
+      allowedModes: new Set(['levelbased', 'manual']),
+      levelbased: { minLevel: 1, startLevel: 2, maxLevel: 4, curveType: 'linear', logCurveFactor: 9 },
+    },
+    safety: {
+      enableDryRunProtection: false,
+      enableOverfillProtection: false,
+      dryRunThresholdPercent: 2,
+      highVolumeSafetyThresholdPercent: 98,
+      overfillThresholdPercent: 98,
+      timeleftToFullOrEmptyThresholdSeconds: 0,
+    },
+  };
+  for (const k of Object.keys(overrides)) {
+    base[k] = typeof overrides[k] === 'object' && !Array.isArray(overrides[k])
+      ? { ...base[k], ...overrides[k] }
+      : overrides[k];
+  }
+  return base;
+}
+
+function makeMeasurementChild({ type = 'level', position = 'atequipment', name = 'child-level' } = {}) {
+  return {
+    config: {
+      general: { id: name, name },
+      functionality: { positionVsParent: position },
+      asset: { type },
+    },
+    measurements: new MeasurementContainer({
+      autoConvert: true,
+      preferredUnits: { level: 'm', flow: 'm3/s', pressure: 'Pa' },
+    }),
+  };
+}
+
+test('level child subscription records one sample per event for level-rate fallback', async () => {
+  const ps = new PumpingStation(makeConfig());
+  const child = makeMeasurementChild();
+
+  ps._subscribeMeasurement(child);
+  child.measurements.type('level').variant('measured').position('atequipment')
+    .value(1.0, 1000, 'm');
+  child.measurements.type('level').variant('measured').position('atequipment')
+    .value(1.1, 3000, 'm');
+
+  const series = ps.measurements.type('level').variant('measured').position('atequipment').get();
+  assert.deepEqual(series.values, [1.0, 1.1]);
+
+  const net = ps.flowAggregator.selectBestNetFlow();
+  assert.equal(net.source, 'level:measured');
+  assert.equal(net.direction, 'filling');
+  assert.ok(Math.abs(net.value - 0.5) < 1e-9, `net flow was ${net.value}`);
+});
+
+test('Basin geometry — derived values', async (t) => {
+  const ps = new PumpingStation(makeConfig());
+
+  await t.test('surfaceArea = volume / height', () => {
+    assert.equal(ps.basin.surfaceArea, 10);  // 50 / 5
+  });
+  await t.test('maxVol = height × area ≡ volEmptyBasin', () => {
+    assert.equal(ps.basin.maxVol, 50);
+    assert.equal(ps.basin.maxVol, ps.basin.volEmptyBasin);
+  });
+  await t.test('maxVolAtOverflow = overflowLevel × area', () => {
+    assert.equal(ps.basin.maxVolAtOverflow, 45);  // 4.5 × 10
+  });
+  await t.test('minVolAtInflow = inflowLevel × area', () => {
+    assert.equal(ps.basin.minVolAtInflow, 30);  // 3 × 10
+  });
+  await t.test('minVolAtOutflow = outflowLevel × area', () => {
+    assert.ok(Math.abs(ps.basin.minVolAtOutflow - 2) < 1e-9);  // 0.2 × 10
+  });
+  await t.test('minVol honours minHeightBasedOn=outlet', () => {
+    assert.ok(Math.abs(ps.basin.minVol - 2) < 1e-9);
+  });
+  await t.test('minVol honours minHeightBasedOn=inlet', () => {
+    const ps2 = new PumpingStation(makeConfig({ hydraulics: { minHeightBasedOn: 'inlet' } }));
+    assert.equal(ps2.basin.minVol, 30);
+  });
+  await t.test('pipe diameters are part of basin contract', () => {
+    assert.equal(ps.basin.inletPipeDiameter, 0.4);
+    assert.equal(ps.basin.outletPipeDiameter, 0.3);
+  });
+});
+
+test('Level ↔ volume roundtrip', async (t) => {
+  const ps = new PumpingStation(makeConfig());
+
+  await t.test('_calcVolumeFromLevel multiplies by area', () => {
+    assert.equal(ps._calcVolumeFromLevel(2), 20);
+  });
+  await t.test('_calcVolumeFromLevel clamps negatives to 0', () => {
+    assert.equal(ps._calcVolumeFromLevel(-3), 0);
+  });
+  await t.test('_calcLevelFromVolume divides by area', () => {
+    assert.equal(ps._calcLevelFromVolume(20), 2);
+  });
+  await t.test('_calcLevelFromVolume clamps negatives to 0', () => {
+    assert.equal(ps._calcLevelFromVolume(-10), 0);
+  });
+  await t.test('roundtrip preserves level', () => {
+    const v = ps._calcVolumeFromLevel(2.7);
+    assert.ok(Math.abs(ps._calcLevelFromVolume(v) - 2.7) < 1e-10);
+  });
+});
+
+test('Threshold guardrails — _validateThresholdOrdering', async (t) => {
+  await t.test('valid config returns no issues', () => {
+    const ps = new PumpingStation(makeConfig());
+    assert.equal(ps.thresholdIssues.length, 0);
+  });
+
+  await t.test('minLevel > startLevel flagged', () => {
+    const ps = new PumpingStation(makeConfig({
+      control: {
+        mode: 'levelbased',
+        allowedModes: new Set(['levelbased']),
+        levelbased: { minLevel: 3, startLevel: 2, maxLevel: 4 },
+      },
+    }));
+    assert.ok(ps.thresholdIssues.some((i) => i.aName === 'minLevel'));
+  });
+
+  await t.test('startLevel == maxLevel flagged (must be strict <)', () => {
+    const ps = new PumpingStation(makeConfig({
+      control: {
+        mode: 'levelbased',
+        allowedModes: new Set(['levelbased']),
+        levelbased: { minLevel: 1, startLevel: 4, maxLevel: 4 },
+      },
+    }));
+    assert.ok(ps.thresholdIssues.some((i) => i.aName === 'startLevel'));
+  });
+
+  await t.test('startLevel > inflowLevel is allowed (sewer-buffer mode), no issue raised', () => {
+    // Inflow gravity point at 3, startLevel pushed to 3.5 → basin is allowed
+    // to fill past the inlet before pumps engage. levelBased shifts the ramp
+    // foot to startLevel; the validator no longer flags the ordering.
+    const ps = new PumpingStation(makeConfig({
+      control: {
+        mode: 'levelbased',
+        allowedModes: new Set(['levelbased']),
+        levelbased: { minLevel: 1, startLevel: 3.5, maxLevel: 4, curveType: 'linear' },
+      },
+    }));
+    assert.ok(!ps.thresholdIssues.some((i) => i.aName === 'startLevel' && i.bName === 'inflowLevel'),
+      'startLevel vs inflowLevel ordering must not raise an issue');
+  });
+
+  await t.test('outflowLevel >= inflowLevel flagged', () => {
+    const ps = new PumpingStation(makeConfig({
+      basin: { volume: 50, height: 5, inflowLevel: 0.1, outflowLevel: 0.5, overflowLevel: 4.5 },
+    }));
+    assert.ok(ps.thresholdIssues.some((i) => i.aName === 'outflowLevel'));
+  });
+
+  await t.test('overflowLevel > basinHeight flagged', () => {
+    const ps = new PumpingStation(makeConfig({
+      basin: { volume: 50, height: 5, inflowLevel: 3, outflowLevel: 0.2, overflowLevel: 6 },
+    }));
+    assert.ok(ps.thresholdIssues.some((i) => i.aName === 'overflowLevel'));
+  });
+
+  await t.test('dryRunLevel > minLevel flagged (safety band inverted)', () => {
+    // With minHeightBasedOn=inlet, refLowLevel=inflowLevel=3.
+    // dryRunLevel = 3 × (1 + 100/100) = 6; minLevel=1 → 6 ≤ 1 fails.
+    const ps = new PumpingStation(makeConfig({
+      hydraulics: { minHeightBasedOn: 'inlet' },
+      safety: { enableDryRunProtection: true, dryRunThresholdPercent: 100 },
+    }));
+    assert.ok(ps.thresholdIssues.some((i) => i.aName === 'dryRunLevel'));
+  });
+});
+
+test('Direction derivation — _deriveDirection', async (t) => {
+  const ps = new PumpingStation(makeConfig());
+
+  await t.test('positive flow above dead-band → filling', () => {
+    assert.equal(ps._deriveDirection(0.01), 'filling');
+  });
+  await t.test('negative flow below dead-band → draining', () => {
+    assert.equal(ps._deriveDirection(-0.01), 'draining');
+  });
+  await t.test('flow inside dead-band → steady', () => {
+    assert.equal(ps._deriveDirection(0), 'steady');
+    assert.equal(ps._deriveDirection(1e-5), 'steady');
+    assert.equal(ps._deriveDirection(-1e-5), 'steady');
+  });
+});
+
+test('Mode change — changeMode', async (t) => {
+  const ps = new PumpingStation(makeConfig());
+
+  await t.test('valid mode swap updates this.mode', () => {
+    ps.changeMode('manual');
+    assert.equal(ps.mode, 'manual');
+  });
+  await t.test('rejected mode leaves this.mode unchanged', () => {
+    ps.changeMode('manual');
+    ps.changeMode('notamode');
+    assert.equal(ps.mode, 'manual');
+  });
+});
+
+test('Calibration — predicted volume and level', async (t) => {
+  const ps = new PumpingStation(makeConfig());
+
+  await t.test('calibratePredictedVolume rewrites volume series', () => {
+    ps.calibratePredictedVolume(25);
+    const vol = ps.measurements.type('volume').variant('predicted').position('atequipment').getCurrentValue('m3');
+    assert.ok(Math.abs(vol - 25) < 1e-9);
+  });
+  await t.test('calibratePredictedVolume also writes level (= vol / area)', () => {
+    ps.calibratePredictedVolume(30);
+    const lvl = ps.measurements.type('level').variant('predicted').position('atequipment').getCurrentValue('m');
+    assert.ok(Math.abs(lvl - 3) < 1e-9);  // 30 / 10
+  });
+  await t.test('calibratePredictedLevel writes level + volume = level × area', () => {
+    ps.calibratePredictedLevel(2.5);
+    const lvl = ps.measurements.type('level').variant('predicted').position('atequipment').getCurrentValue('m');
+    const vol = ps.measurements.type('volume').variant('predicted').position('atequipment').getCurrentValue('m3');
+    assert.ok(Math.abs(lvl - 2.5) < 1e-9);
+    assert.ok(Math.abs(vol - 25) < 1e-9);  // 2.5 × 10
+  });
+});
+
+test('Levelbased control zones — _controlLevelBased', async (t) => {
+  await t.test('level < minLevel → percControl=0 and MGC turnOff called', async () => {
+    const ps = new PumpingStation(makeConfig());
+    const mock = registerMockGroup(ps, 'mgc1');
+    ps.calibratePredictedLevel(0.5);  // below minLevel=1
+    await ps._controlLevelBased();
+    assert.equal(ps.percControl, 0);
+    assert.equal(mock._calls.turnOff, 1);
+  });
+
+  await t.test('minLevel ≤ level < active ramp start → soft turnOff (pct=0 no longer dispatched)', async () => {
+    const ps = new PumpingStation(makeConfig());
+    ps.percControl = 42;  // simulated previous demand
+    const mock = registerMockGroup(ps, 'mgc1');
+    ps.calibratePredictedLevel(1.5);  // between minLevel=1 and startLevel=2
+    await ps._controlLevelBased();
+    assert.equal(ps.percControl, 0);
+    // pct=0 → turnOff, no setDemand call (avoids MGC interpolating 0 % to dt.flow.min).
+    assert.equal(mock._calls.turnOff, 1);
+    assert.equal(mock._calls.setDemand.length, 0);
+  });
+
+  await t.test('filling: level between startLevel and inflowLevel ramps from startLevel (no implicit hold zone)', async () => {
+    const ps = new PumpingStation(makeConfig());
+    const mock = registerMockGroup(ps, 'mgc1');
+    ps.calibratePredictedLevel(2.5);  // startLevel=2, inflowLevel=3, maxLevel=4
+    await ps._controlLevelBased('filling');
+    // Ramp foot = startLevel (NOT inflowLevel). lerp(2.5, [2, 4], [0, 100]) = 25.
+    assert.ok(Math.abs(ps.percControl - 25) < 1e-9, `expected ~25 %, got ${ps.percControl}`);
+    assert.equal(mock._calls.turnOff, 0, 'engaged — pumps must not be turned off in the ramp');
+    assert.equal(mock._calls.setDemand.length, 1);
+    assert.ok(Math.abs(mock._calls.setDemand[0][0] - 25) < 1e-9);
+  });
+
+  await t.test('filling: level ≥ maxLevel → percControl clamped at 100, routed via setDemand', async () => {
+    const ps = new PumpingStation(makeConfig());
+    const mock = registerMockGroup(ps, 'mgc1');
+    ps.calibratePredictedLevel(3.5);  // 3/4 of the [2,4] ramp → 75 %.
+    await ps._controlLevelBased('filling');
+    assert.ok(Math.abs(ps.percControl - 75) < 1e-9, `expected ~75 %, got ${ps.percControl}`);
+    assert.equal(mock._calls.setDemand.length, 1);
+    assert.equal(mock._calls.setDemand[0][1], '%');
+    assert.ok(Math.abs(mock._calls.setDemand[0][0] - 75) < 1e-9);
+  });
+
+  await t.test('filling: holdLevel raises the ramp foot — explicit hold band [startLevel, holdLevel] sits at 0 %', async () => {
+    const ps = new PumpingStation(makeConfig({
+      control: {
+        mode: 'levelbased',
+        allowedModes: new Set(['levelbased']),
+        levelbased: { minLevel: 1, startLevel: 2, holdLevel: 3, maxLevel: 4, curveType: 'linear', logCurveFactor: 9 },
+      },
+    }));
+    const mock = registerMockGroup(ps, 'mgc1');
+    ps.calibratePredictedLevel(2.5);  // inside [startLevel, holdLevel]
+    await ps._controlLevelBased('filling');
+    assert.equal(ps.percControl, 0);
+    assert.equal(mock._calls.turnOff, 0, 'engaged — hold band runs at MGC flow.min, not off');
+    assert.deepEqual(mock._calls.setDemand[0], [0, '%']);
+  });
+
+  await t.test('shift disabled (default): foot stays at startLevel — falling levels track the ramp down to startLevel', async () => {
+    const ps = new PumpingStation(makeConfig());
+    registerMockGroup(ps, 'mgc1');
+    // Climb above startLevel, then fall to a level inside [start, inflow]. With
+    // the new semantics (ramp foot = startLevel, NOT inflowLevel) the falling
+    // level still produces a positive demand on the way down.
+    ps.calibratePredictedLevel(3.8);
+    await ps._controlLevelBased();
+    assert.ok(ps.percControl > 0);
+    ps.calibratePredictedLevel(2.5);  // startLevel=2, maxLevel=4 → 25 %
+    await ps._controlLevelBased();
+    assert.ok(Math.abs(ps.percControl - 25) < 1e-9, `expected 25 % on the down ramp, got ${ps.percControl}`);
+  });
+
+  await t.test('shift enabled: arming on % threshold + hold-then-ramp on draining (with holdLevel pinning the foot)', async () => {
+    // The original shifted-ramp test was authored against the legacy ramp
+    // foot = inflowLevel (=3). With the new defaults the foot moves to
+    // startLevel (=2), which changes every percentage in the trace. Pin
+    // the foot back to 3 by setting holdLevel = 3 — that keeps this test's
+    // arithmetic self-consistent: up curve goes 0 %@3 to 100 %@4.
+    //   shiftArmPercent=80 ⇒ arms when up curve ≥ 80 % i.e. level ≥ 3.8.
+    //   shiftLevel=3.5 ⇒ held output starts ramping down at this level.
+    const ps = new PumpingStation(makeConfig({
+      control: {
+        mode: 'levelbased',
+        allowedModes: new Set(['levelbased']),
+        levelbased: {
+          minLevel: 1, startLevel: 2, holdLevel: 3, maxLevel: 4, curveType: 'linear', logCurveFactor: 9,
+          enableShiftedRamp: true, shiftLevel: 3.5, shiftArmPercent: 80,
+        },
+      },
+    }));
+    registerMockGroup(ps, 'mgc1');
+    // Filling at level=3.5 ⇒ up curve = 50 %, below arm threshold ⇒ not armed.
+    ps.calibratePredictedLevel(3.5);
+    await ps._controlLevelBased('filling');
+    assert.equal(ps._shiftArmed, false);
+    assert.ok(Math.abs(ps.percControl - 50) < 1e-9);
+    // Filling at level=3.85 ⇒ up curve = 85 % ≥ arm threshold ⇒ ARM.
+    ps.calibratePredictedLevel(3.85);
+    await ps._controlLevelBased('filling');
+    assert.equal(ps._shiftArmed, true);
+    assert.ok(Math.abs(ps.percControl - 85) < 1e-9);  // still up curve while filling
+    // Direction flips to draining at the same level ⇒ capture hold ≈ 85 %.
+    await ps._controlLevelBased('draining');
+    assert.ok(Math.abs(ps._shiftHoldValue - 85) < 1e-6);
+    // While draining and level ≥ shiftLevel ⇒ output stays at hold (≈85 %).
+    ps.calibratePredictedLevel(3.6);
+    await ps._controlLevelBased('draining');
+    assert.ok(Math.abs(ps.percControl - 85) < 1e-6);
+    // Below shiftLevel: ramp [shift, hold] → [start, 0]. At level=2.75
+    // (midpoint of [2, 3.5]), x=0.5, output ≈ 85 × 0.5 = 42.5 %.
+    ps.calibratePredictedLevel(2.75);
+    await ps._controlLevelBased('draining');
+    assert.ok(Math.abs(ps.percControl - 42.5) < 1e-6);
+    // Below startLevel ⇒ output 0 % AND disarm.
+    ps.calibratePredictedLevel(1.9);
+    await ps._controlLevelBased('draining');
+    assert.equal(ps.percControl, 0);
+    assert.equal(ps._shiftArmed, false);
+    assert.equal(ps._shiftHoldValue, null);
+  });
+
+  await t.test('shift enabled: returning to filling clears hold; new hold captured on next drain', async () => {
+    const ps = new PumpingStation(makeConfig({
+      control: {
+        mode: 'levelbased',
+        allowedModes: new Set(['levelbased']),
+        levelbased: {
+          // Pin the ramp foot at 3 via holdLevel — keeps legacy arithmetic
+          // self-consistent with the original test (up curve 0 %@3 → 100 %@4).
+          minLevel: 1, startLevel: 2, holdLevel: 3, maxLevel: 4, curveType: 'linear', logCurveFactor: 9,
+          enableShiftedRamp: true, shiftLevel: 3.5, shiftArmPercent: 80,
+        },
+      },
+    }));
+    registerMockGroup(ps, 'mgc1');
+    ps.calibratePredictedLevel(3.85);
+    await ps._controlLevelBased('filling');
+    await ps._controlLevelBased('draining');
+    assert.ok(Math.abs(ps._shiftHoldValue - 85) < 1e-6);
+    // Direction back to filling ⇒ up curve, hold cleared, still armed.
+    ps.calibratePredictedLevel(3.9);
+    await ps._controlLevelBased('filling');
+    assert.equal(ps._shiftHoldValue, null);
+    assert.equal(ps._shiftArmed, true);
+    assert.ok(Math.abs(ps.percControl - 90) < 1e-6);  // up curve at 3.9 = 90 %
+    // Flip to draining again at higher level ⇒ new hold ≈ 90 %.
+    await ps._controlLevelBased('draining');
+    assert.ok(Math.abs(ps._shiftHoldValue - 90) < 1e-6);
+  });
+
+  await t.test('log curve has fast early response', async () => {
+    const ps = new PumpingStation(makeConfig({
+      control: {
+        mode: 'levelbased',
+        allowedModes: new Set(['levelbased']),
+        // holdLevel=3 keeps ramp foot at 3 so x=0.5 means level=3.5, matching
+        // the legacy assertion bracket.
+        levelbased: { minLevel: 1, startLevel: 2, holdLevel: 3, maxLevel: 4, curveType: 'log', logCurveFactor: 9 },
+      },
+    }));
+    registerMockGroup(ps, 'mgc1');
+    ps.calibratePredictedLevel(3.5);  // x=0.5 on filling ramp [3,4]
+    await ps._controlLevelBased('filling');
+    assert.ok(ps.percControl > 50);
+    assert.ok(ps.percControl < 100);
+  });
+
+  await t.test('level > maxLevel → percControl ≥ 100 (MGC clamps internally)', async () => {
+    const ps = new PumpingStation(makeConfig());
+    registerMockGroup(ps, 'mgc1');
+    ps.calibratePredictedLevel(4.5);  // above maxLevel=4
+    await ps._controlLevelBased();
+    assert.ok(ps.percControl >= 100);
+  });
+});
+
+test('getOutput — flattens basin + state + demand', async (t) => {
+  const ps = new PumpingStation(makeConfig());
+  ps.percControl = 37;
+
+  await t.test('includes basin geometry fields', () => {
+    const out = ps.getOutput();
+    assert.equal(out.volEmptyBasin, 50);
+    assert.equal(out.maxVolAtOverflow, 45);
+    assert.equal(out.minVolAtInflow, 30);
+    assert.ok(Math.abs(out.minVolAtOutflow - 2) < 1e-9);
+    assert.equal(out.inletPipeDiameter, 0.4);
+    assert.equal(out.outletPipeDiameter, 0.3);
+    assert.ok(Math.abs(out.highVolumeSafetyLevel - 4.41) < 1e-9);
+    assert.ok(Math.abs(out.dryRunLevel - 0.204) < 1e-9);
+  });
+  await t.test('includes state fields (direction, flowSource, timeleft)', () => {
+    const out = ps.getOutput();
+    assert.ok('direction' in out);
+    assert.ok('flowSource' in out);
+    assert.ok('timeleft' in out);
+  });
+  await t.test('includes percControl', () => {
+    assert.equal(ps.getOutput().percControl, 37);
+  });
+});
+
+test('Manual inflow — setManualInflow stores predicted inflow', async (t) => {
+  const ps = new PumpingStation(makeConfig());
+  ps.setManualInflow(0.05, Date.now(), 'm3/s');  // 0.05 m³/s
+  const v = ps.measurements.type('flow').variant('predicted').position('in').child('manual-qin').getCurrentValue('m3/s');
+  assert.ok(Math.abs(v - 0.05) < 1e-9);
+});
+
+// _updatePredictedVolume now clamps [dryRunSafetyVol, maxVolAtOverflow] and
+// tracks any excess as cumulative `overflowVolume` plus a synthetic
+// `flow.predicted.out.overflow` rate so net-flow balance stays at ~0 while
+// pinned. We drive ticks manually with monotonic timestamps to keep tests
+// deterministic (Date.now() in the integrator can step by 0 ms in fast loops).
+test('Predicted volume — overflow clamp and spill tracking', async (t) => {
+  const ps = new PumpingStation(makeConfig({
+    safety: { enableDryRunProtection: false, enableHighVolumeSafety: false, dryRunThresholdPercent: 0 },
+  }));
+  // Seed predicted volume just below the spill point.
+  // maxVolAtOverflow = overflowLevel × area = 4.5 × 10 = 45 m³.
+  const t0 = 1_700_000_000_000;
+  ps.calibratePredictedVolume(44, t0);
+  // Heavy inflow, no real outflow (no pumps wired).
+  ps.setManualInflow(2, t0, 'm3/s');  // 2 m³/s, dt=1s → 2 m³/tick
+
+  await t.test('first overflow tick clamps volume and records spill increment', () => {
+    ps._predictedFlowState = { inflow: 2, outflow: 0, lastTimestamp: t0 };
+    Date.now = () => t0 + 1000;
+    ps._updatePredictedVolume();
+    const vol = ps.measurements.type('volume').variant('predicted').position('atequipment').getCurrentValue('m3');
+    assert.equal(vol, 45);  // pinned at overflow
+    const cumulative = ps.measurements.type('overflowVolume').variant('predicted').position('atequipment').getCurrentValue('m3');
+    assert.equal(cumulative, 1);  // proposed=44+2=46, excess=1 m³ this tick
+    const spill = ps.measurements.type('flow').variant('predicted').position('overflow').getCurrentValue('m3/s');
+    assert.equal(spill, 2);  // instantaneous balance: inflow − outflowReal
+  });
+
+  await t.test('subsequent ticks accumulate full inflow as spill (stable)', () => {
+    Date.now = () => t0 + 2000;
+    ps._updatePredictedVolume();
+    const vol = ps.measurements.type('volume').variant('predicted').position('atequipment').getCurrentValue('m3');
+    assert.equal(vol, 45);
+    const cumulative = ps.measurements.type('overflowVolume').variant('predicted').position('atequipment').getCurrentValue('m3');
+    assert.equal(cumulative, 3);  // 1 + 2
+    const spill = ps.measurements.type('flow').variant('predicted').position('overflow').getCurrentValue('m3/s');
+    assert.equal(spill, 2);
+  });
+
+  await t.test('predicted net flow reads ~0 while pinned at overflow', () => {
+    const net = ps._selectBestNetFlow();
+    // inflow=2, outflow_total=2 (synthetic spill), net = 0
+    assert.ok(Math.abs(net.value) < 1e-9);
+    assert.equal(net.source, 'predicted');
+  });
+
+  await t.test('once inflow stops, spill flow clears and clamp releases', () => {
+    ps.setManualInflow(0, t0 + 2000, 'm3/s');
+    ps._predictedFlowState = { inflow: 0, outflow: 0, lastTimestamp: t0 + 2000 };
+    Date.now = () => t0 + 3000;
+    ps._updatePredictedVolume();
+    const spill = ps.measurements.type('flow').variant('predicted').position('overflow').getCurrentValue('m3/s');
+    assert.equal(spill, 0);
+    // Volume stays at 45 (no draining force) but is no longer "pinned".
+    const vol = ps.measurements.type('volume').variant('predicted').position('atequipment').getCurrentValue('m3');
+    assert.equal(vol, 45);
+  });
+});
+
+test('Predicted volume — dry-run lower clamp', async (t) => {
+  const ps = new PumpingStation(makeConfig({
+    // dryRunSafetyVol = minVolAtOutflow × (1 + 5/100) = 2 × 1.05 = 2.1 m³
+    safety: { enableDryRunProtection: true, dryRunThresholdPercent: 5 },
+  }));
+  const t0 = 1_700_000_000_000;
+
+  await t.test('initial seed below dryRunSafetyVol is left alone (no upward bump)', () => {
+    // Seed defaults to minVol=2 (below dryRunSafetyVol=2.1).
+    ps._predictedFlowState = { inflow: 0, outflow: 0, lastTimestamp: t0 };
+    Date.now = () => t0 + 1000;
+    ps._updatePredictedVolume();
+    const vol = ps.measurements.type('volume').variant('predicted').position('atequipment').getCurrentValue('m3');
+    assert.equal(vol, 2);  // unchanged — clamp doesn't fire because we started below it
+  });
+
+  await t.test('drain across dryRunSafetyVol clamps at the threshold', () => {
+    // Calibrate well above, then push outflow that would cross the threshold.
+    ps.calibratePredictedVolume(3, t0 + 1000);
+    // outflow=2 m³/s for 1s → would drop to 1; clamp catches at 2.1.
+    ps.setManualOutflow(2, t0 + 1000, 'm3/s');
+    ps._predictedFlowState = { inflow: 0, outflow: 2, lastTimestamp: t0 + 1000 };
+    Date.now = () => t0 + 2000;
+    ps._updatePredictedVolume();
+    const vol = ps.measurements.type('volume').variant('predicted').position('atequipment').getCurrentValue('m3');
+    assert.ok(Math.abs(vol - 2.1) < 1e-9);
+  });
+});
+
+test('getOutput — exposes predictedOverflowVolume / predictedOverflowRate', () => {
+  const ps = new PumpingStation(makeConfig());
+  // Seed an overflow scenario.
+  const t0 = 1_700_000_000_000;
+  ps.calibratePredictedVolume(44, t0);
+  ps.setManualInflow(2, t0, 'm3/s');
+  ps._predictedFlowState = { inflow: 2, outflow: 0, lastTimestamp: t0 };
+  Date.now = () => t0 + 1000;
+  ps._updatePredictedVolume();
+  const out = ps.getOutput();
+  assert.equal(out.predictedOverflowVolume, 1);
+  assert.equal(out.predictedOverflowRate, 2);
+});
+
+// Hard physical floor at 0. The dryRunSafetyVol clamp only fires on transition
+// from above, so a basin seeded below + continued outflow used to integrate
+// the volume arbitrarily negative. The level helper masked this by flooring
+// at 0 in _calcLevelFromVolume — fix is to floor the integrator itself.
+test('Predicted volume — physical floor at 0 (underflow track)', async (t) => {
+  const ps = new PumpingStation(makeConfig({
+    safety: { enableDryRunProtection: true, dryRunThresholdPercent: 5 },
+  }));
+  const t0 = 1_700_000_000_000;
+
+  await t.test('seeded below dryRun + continued outflow does NOT go negative', () => {
+    ps.calibratePredictedVolume(0.5, t0);  // below dryRunSafetyVol (2.1)
+    ps.setManualOutflow(2, t0, 'm3/s');     // 2 m³/s for 1s → would drop to -1.5
+    ps._predictedFlowState = { inflow: 0, outflow: 2, lastTimestamp: t0 };
+    Date.now = () => t0 + 1000;
+    ps._updatePredictedVolume();
+    const vol = ps.measurements.type('volume').variant('predicted').position('atequipment').getCurrentValue('m3');
+    assert.equal(vol, 0);  // floored at 0, not -1.5
+    const underflow = ps.measurements
+      .type('underflowVolume').variant('predicted').position('atequipment').getCurrentValue('m3');
+    assert.equal(underflow, 1.5);  // tracked as diagnostic
+  });
+
+  await t.test('subsequent ticks accumulate underflow while outflow continues', () => {
+    Date.now = () => t0 + 2000;
+    ps._predictedFlowState = { inflow: 0, outflow: 2, lastTimestamp: t0 + 1000 };
+    ps._updatePredictedVolume();
+    const vol = ps.measurements.type('volume').variant('predicted').position('atequipment').getCurrentValue('m3');
+    assert.equal(vol, 0);
+    const underflow = ps.measurements
+      .type('underflowVolume').variant('predicted').position('atequipment').getCurrentValue('m3');
+    assert.equal(underflow, 3.5);  // 1.5 + 2.0
+  });
+
+  await t.test('getOutput exposes predictedUnderflowVolume', () => {
+    const out = ps.getOutput();
+    assert.equal(out.predictedUnderflowVolume, 3.5);
+  });
+
+  await t.test('inflow returns and basin refills from 0 (no jump to dryRunSafetyVol)', () => {
+    ps.setManualInflow(1, t0 + 2000, 'm3/s');
+    ps.setManualOutflow(0, t0 + 2000, 'm3/s');
+    ps._predictedFlowState = { inflow: 1, outflow: 0, lastTimestamp: t0 + 2000 };
+    Date.now = () => t0 + 3000;
+    ps._updatePredictedVolume();
+    const vol = ps.measurements.type('volume').variant('predicted').position('atequipment').getCurrentValue('m3');
+    assert.ok(Math.abs(vol - 1) < 1e-9);  // 0 + 1 = 1, NOT pinned to 2.1
+  });
+});

test/basic/thresholdValidator.basic.test.js

@@ -0,0 +1,124 @@
+// Basic unit tests for thresholdValidator.
+// Run with:  node --test test/basic/thresholdValidator.basic.test.js
+
+const test = require('node:test');
+const assert = require('node:assert/strict');
+
+const { validateThresholdOrdering } = require('../../src/basin/thresholdValidator');
+const BasinGeometry = require('../../src/basin/BasinGeometry');
+
+// A valid baseline: outlet 0.2 < inflow 3 < overflow 4.5 ≤ height 5,
+// dryRun = 0.2 * 1.10 = 0.22 ≤ minLevel 1 ≤ start 2 < max 4
+// ≤ highVolumeSafetyLevel 4.275.
+function validBasinAndCfg() {
+  const basin = new BasinGeometry(
+    { volume: 50, height: 5, inflowLevel: 3, outflowLevel: 0.2, overflowLevel: 4.5 },
+    { minHeightBasedOn: 'outlet' }
+  );
+  const levelbased = { minLevel: 1, startLevel: 2, maxLevel: 4 };
+  const safety = { dryRunThresholdPercent: 10, overfillThresholdPercent: 95 };
+  return { basin, levelbased, safety };
+}
+
+test('valid ordering returns empty array', () => {
+  const { basin, levelbased, safety } = validBasinAndCfg();
+  const issues = validateThresholdOrdering(basin, levelbased, safety);
+  assert.deepEqual(issues, []);
+});
+
+test('outflowLevel >= inflowLevel triggers issue with correct shape', () => {
+  const basin = new BasinGeometry(
+    // outflow 3.5 > inflow 3 — invariant broken.
+    { volume: 50, height: 5, inflowLevel: 3, outflowLevel: 3.5, overflowLevel: 4.5 },
+    { minHeightBasedOn: 'outlet' }
+  );
+  const issues = validateThresholdOrdering(basin, { minLevel: 1, startLevel: 2, maxLevel: 4 }, { dryRunThresholdPercent: 0, overfillThresholdPercent: 100 });
+  const hit = issues.find((i) => i.aName === 'outflowLevel' && i.bName === 'inflowLevel');
+  assert.ok(hit, 'expected an outflowLevel < inflowLevel issue');
+  assert.equal(hit.op, '<');
+  assert.equal(hit.a, 3.5);
+  assert.equal(hit.b, 3);
+  assert.match(hit.msg, /outflowLevel.*<.*inflowLevel/);
+});
+
+test('maxLevel >= highVolumeSafetyLevel triggers issue', () => {
+  const { basin } = validBasinAndCfg();
+  // highVolumeSafetyLevel = overflowLevel × highPct/100 = 4.5 × 0.80 = 3.6.
+  // maxLevel 4 > 3.6 → expect a `maxLevel <= highVolumeSafetyLevel` issue.
+  const issues = validateThresholdOrdering(
+    basin,
+    { minLevel: 1, startLevel: 2, maxLevel: 4 },
+    { dryRunThresholdPercent: 10, overfillThresholdPercent: 80 }
+  );
+  const hit = issues.find((i) => i.aName === 'maxLevel' && i.bName === 'highVolumeSafetyLevel');
+  assert.ok(hit, 'expected a maxLevel <= highVolumeSafetyLevel issue');
+  assert.equal(hit.op, '<=');
+  assert.equal(hit.a, 4);
+  assert.ok(Math.abs(hit.b - 3.6) < 1e-9);
+});
+
+test('NaN / undefined values are skipped, not flagged as issues', () => {
+  const { basin } = validBasinAndCfg();
+  const issues = validateThresholdOrdering(
+    basin,
+    { minLevel: undefined, startLevel: NaN, maxLevel: 4 },
+    { dryRunThresholdPercent: 10, overfillThresholdPercent: 95 }
+  );
+  // dryRunLevel <= minLevel skipped (minLevel undefined → NaN)
+  // minLevel <= startLevel skipped (both NaN-ish)
+  // startLevel < maxLevel skipped (startLevel NaN)
+  // maxLevel <= highVolumeSafetyLevel still checked → 4 ≤ 4.275 OK.
+  // Geometry checks also OK.
+  assert.deepEqual(issues, []);
+});
+
+test('multiple violations produce multiple issues in stable order', () => {
+  // Build a basin with two geometry violations.
+  const basin = new BasinGeometry(
+    // outflow 4 > inflow 3 (broken)  AND  overflow 6 > height 5 (broken)
+    { volume: 50, height: 5, inflowLevel: 3, outflowLevel: 4, overflowLevel: 6 },
+    { minHeightBasedOn: 'outlet' }
+  );
+  const issues = validateThresholdOrdering(
+    basin,
+    { minLevel: 1, startLevel: 2, maxLevel: 4 },
+    { dryRunThresholdPercent: 0, overfillThresholdPercent: 100 }
+  );
+  // Expect at least the two geometry issues, in declaration order:
+  //   outflowLevel < inflowLevel comes before overflowLevel <= basinHeight.
+  const idxOutflow = issues.findIndex((i) => i.aName === 'outflowLevel');
+  const idxOverflow = issues.findIndex((i) => i.aName === 'overflowLevel' && i.bName === 'basinHeight');
+  assert.ok(idxOutflow >= 0, 'expected outflowLevel issue');
+  assert.ok(idxOverflow >= 0, 'expected overflowLevel <= basinHeight issue');
+  assert.ok(idxOutflow < idxOverflow, 'issues should be in check-declaration order');
+});
+
+test('accepts a plain basin object (duck-typed via getters)', () => {
+  const plainBasin = {
+    volEmptyBasin: 50,
+    heightBasin: 5,
+    inflowLevel: 3,
+    outflowLevel: 0.2,
+    overflowLevel: 4.5,
+    surfaceArea: 10,
+    maxVol: 50,
+    maxVolAtOverflow: 45,
+    minVolAtInflow: 30,
+    minVolAtOutflow: 2,
+    minVol: 2,
+    minHeightBasedOn: 'outlet',
+  };
+  const issues = validateThresholdOrdering(
+    plainBasin,
+    { minLevel: 1, startLevel: 2, maxLevel: 4 },
+    { dryRunThresholdPercent: 10, overfillThresholdPercent: 95 }
+  );
+  assert.deepEqual(issues, []);
+});
+
+test('omitted levelbased / safety objects are tolerated', () => {
+  const { basin } = validBasinAndCfg();
+  // No control or safety supplied → only geometry checks run; valid basin geometry → []
+  const issues = validateThresholdOrdering(basin, undefined, undefined);
+  assert.deepEqual(issues, []);
+});

test/integration/basic-dashboard-flow.test.js

@@ -0,0 +1,103 @@
+const test = require('node:test');
+const assert = require('node:assert/strict');
+const fs = require('node:fs');
+const path = require('node:path');
+
+function loadDashboardFlow() {
+  const flowPath = path.join(__dirname, '../../examples/02-Dashboard.json');
+  return JSON.parse(fs.readFileSync(flowPath, 'utf8'));
+}
+
+function makeContextStub() {
+  const store = {};
+  return {
+    get(key) {
+      return store[key];
+    },
+    set(key, value) {
+      store[key] = value;
+    },
+  };
+}
+
+test('basic dashboard flow contains the pumpingStation node and trend widgets', () => {
+  const flow = loadDashboardFlow();
+  const ps = flow.find((n) => n.type === 'pumpingStation');
+  const parser = flow.find((n) => n.id === 'fn_status_split');
+  const levelChart = flow.find((n) => n.id === 'ui_chart_level');
+  const volumeChart = flow.find((n) => n.id === 'ui_chart_volume');
+  const flowChart = flow.find((n) => n.id === 'ui_chart_flow');
+
+  assert.ok(ps, 'pumpingStation node should exist');
+  assert.equal(ps.type, 'pumpingStation');
+  assert.equal(ps.controlMode, 'levelbased');
+  assert.equal(ps.levelCurveType, 'linear');
+  assert.equal(ps.inletPipeDiameter, 0.3);
+  assert.equal(ps.outletPipeDiameter, 0.3);
+  assert.ok(parser, 'fn_status_split should exist');
+  assert.equal(parser.outputs, 14);
+  assert.equal(levelChart.type, 'ui-chart');
+  assert.equal(volumeChart.type, 'ui-chart');
+  assert.equal(flowChart.type, 'ui-chart');
+});
+
+test('basic dashboard parser routes process fields to charts and state text', () => {
+  const flow = loadDashboardFlow();
+  const parser = flow.find((n) => n.id === 'fn_status_split');
+  assert.ok(parser, 'fn_status_split should exist');
+
+  const func = new Function('msg', 'context', 'node', parser.func);
+  const context = makeContextStub();
+  const node = { send() {} };
+
+  // Flatten format is `${type}.${variant}.${position}.${childId}`. When the
+  // runtime writes without an explicit .child(), childId='default'. Mirror
+  // the real shape here. (See generalFunctions/src/measurements/
+  // MeasurementContainer.js getFlattenedOutput.)
+  const out = func({
+    payload: {
+      'level.predicted.atequipment.default': 3.25,
+      'volume.predicted.atequipment.default': 32.5,
+      'volumePercent.predicted.atequipment.default': 65,
+      'flow.predicted.in.default': 0.005,
+      'flow.predicted.out.default': 0.002,
+      'netFlowRate.predicted.atequipment.default': 0.003,
+      percControl: 25,
+      mode: 'levelbased',
+      direction: 'filling',
+      safetyState: 'normal',
+      isOverflowing: false,
+      timeleft: 400,
+    },
+  }, context, node);
+
+  assert.ok(Array.isArray(out));
+  assert.equal(out.length, 14);
+  assert.equal(out[0].payload, 'levelbased');
+  assert.equal(out[1].payload, 'filling');
+  assert.equal(out[2].payload, '3.25 m');
+  assert.equal(out[3].payload, '32.50 m³');
+  assert.equal(out[4].payload, '65.00 %');
+  assert.equal(out[5].payload, '25.0 %');
+  assert.deepEqual(out[7], { topic: 'Level', payload: 3.25 });
+  assert.deepEqual(out[8], { topic: 'Volume', payload: 32.5 });
+  assert.deepEqual(out[9], { topic: 'Volume %', payload: 65 });
+  assert.deepEqual(out[10], { topic: 'Inflow', payload: 18 });
+  assert.deepEqual(out[11], { topic: 'Outflow', payload: 7.2 });
+  assert.deepEqual(out[12], { topic: 'Net', payload: 10.8 });
+  assert.ok(Array.isArray(out[13].payload));
+});
+
+test('basic dashboard parser keeps previous values when process output sends only changed fields', () => {
+  const flow = loadDashboardFlow();
+  const parser = flow.find((n) => n.id === 'fn_status_split');
+  const func = new Function('msg', 'context', 'node', parser.func);
+  const context = makeContextStub();
+  const node = { send() {} };
+
+  func({ payload: { 'level.predicted.atequipment.default': 3.1, percControl: 10 } }, context, node);
+  const out = func({ payload: { percControl: 20 } }, context, node);
+
+  assert.equal(out[2].payload, '3.10 m');
+  assert.equal(out[5].payload, '20.0 %');
+});

test/integration/shifted-ramp-end-to-end.test.js

@@ -0,0 +1,219 @@
+// End-to-end test for the level-armed hysteresis (shifted ramp) cycle.
+// Drives a full fill→arm→drain cycle through the same code path the
+// dashboard exercises (manual Q_IN / Q_OUT + tick), and asserts the
+// hold-then-ramp output behaviour.
+//
+// Run with:  node --test test/integration/shifted-ramp-end-to-end.test.js
+
+const test = require('node:test');
+const assert = require('node:assert/strict');
+
+const PumpingStation = require('../../src/specificClass');
+
+const SURFACE_AREA = 10;        // basin volume / height = 50/5
+const TICK_MS = 1000;           // simulate 1 s per tick
+
+function makeConfig() {
+  return {
+    general: {
+      name: 'TestPS',
+      id: 'ps-e2e',
+      unit: 'm3/h',
+      logging: { enabled: false, logLevel: 'error' },
+      flowThreshold: 1e-4,
+    },
+    functionality: {
+      softwareType: 'pumpingStation',
+      role: 'stationcontroller',
+      positionVsParent: 'atEquipment',
+    },
+    basin: {
+      volume: 50, height: 5,
+      inflowLevel: 3, outflowLevel: 0.2, overflowLevel: 4.5,
+      inletPipeDiameter: 0.4, outletPipeDiameter: 0.3,
+    },
+    hydraulics: { refHeight: 'NAP', basinBottomRef: 0, minHeightBasedOn: 'outlet' },
+    control: {
+      mode: 'levelbased',
+      allowedModes: new Set(['levelbased', 'manual']),
+      levelbased: {
+        // holdLevel pins the ramp foot at 3 to preserve the original geometry
+        // (up curve 0 %@3 → 100 %@4). New default would put the foot at
+        // startLevel=2; this test specifically exercises shifted-ramp arming
+        // behaviour, not the ramp-foot semantic itself.
+        minLevel: 1, startLevel: 2, holdLevel: 3, maxLevel: 4,
+        curveType: 'linear', logCurveFactor: 9,
+        enableShiftedRamp: true, shiftLevel: 3.5, shiftArmPercent: 80,
+      },
+    },
+    safety: {
+      enableDryRunProtection: false, enableOverfillProtection: false,
+      dryRunThresholdPercent: 2, highVolumeSafetyThresholdPercent: 98,
+      overfillThresholdPercent: 98, timeleftToFullOrEmptyThresholdSeconds: 0,
+    },
+  };
+}
+
+// machineGroups is a registry-backed getter (declareChildGetter) — inject
+// the fake MGC via the real child-registration handshake so the registry
+// stays the source of truth across configure() and tick().
+function registerMockGroup(ps, id, demands) {
+  const mock = {
+    config: {
+      general: { id, name: id },
+      functionality: { softwareType: 'machinegroup', positionVsParent: 'atEquipment' },
+      asset: { category: 'controller' },
+    },
+    measurements: {
+      emitter: { on: () => {} },
+      setChildId: () => {}, setChildName: () => {}, setParentRef: () => {},
+    },
+    handleInput: async (_src, d) => { demands.push(d); },
+    turnOffAllMachines: () => {},
+  };
+  ps.childRegistrationUtils.registerChild(mock, 'atEquipment');
+  return mock;
+}
+
+// Build a PS with a fake MGC that captures every demand sent to it,
+// and a clock we control so _updatePredictedVolume integrates over a
+// known dt regardless of wall-clock.
+function buildHarness() {
+  const ps = new PumpingStation(makeConfig());
+  const demands = [];
+  registerMockGroup(ps, 'mgc1', demands);
+  // Seed level at startLevel so the run begins idle.
+  ps.calibratePredictedLevel(2.0);
+  // Override Date.now via a controllable clock that advances `step()`.
+  let now = ps._predictedFlowState.lastTimestamp || 0;
+  ps._fakeNow = () => now;
+  ps._fakeAdvance = (ms) => { now += ms; };
+  // Patch global Date.now JUST inside the scope of these tests.
+  const realNow = Date.now;
+  Date.now = ps._fakeNow;
+  // Restore on completion.
+  ps._restore = () => { Date.now = realNow; };
+  return { ps, demands };
+}
+
+async function step(ps, qIn, qOut) {
+  // Apply the manual Q_IN / Q_OUT (mirroring the dashboard's q_in / q_out
+  // topic handlers in nodeClass.js), advance time, then tick once.
+  if (Number.isFinite(qIn))  ps.setManualInflow(qIn,  Date.now(), 'm3/s');
+  if (Number.isFinite(qOut)) ps.setManualOutflow(qOut, Date.now(), 'm3/s');
+  ps._fakeAdvance(TICK_MS);
+  ps.tick();
+}
+
+function levelOf(ps) {
+  return ps.measurements.type('level').variant('predicted').position('atequipment').getCurrentValue('m');
+}
+
+test('shifted ramp e2e: arm → hold → ramp-down → disarm', async () => {
+  const { ps } = buildHarness();
+  try {
+    // ─── PHASE A: fill from start (2.0) up past the arm point ──────────
+    // Q_IN = 0.05 m3/s, Q_OUT = 0 → net = 0.05 m3/s. Level rises by
+    // 0.05/SURFACE_AREA = 0.005 m per second.
+    let armedAt = null;
+    for (let i = 0; i < 600 && levelOf(ps) < 3.95; i++) {
+      await step(ps, 0.05, 0);
+      if (!armedAt && ps._shiftArmed) armedAt = { level: levelOf(ps), pct: ps.percControl };
+    }
+    assert.ok(armedAt, 'shift should arm during fill');
+    // Should arm right around level=3.8 (up curve = 80 %). Allow ±0.05 m
+    // jitter for time-discretization.
+    assert.ok(Math.abs(armedAt.level - 3.8) < 0.05,
+      `expected arm near level=3.8, got ${armedAt.level}`);
+    assert.ok(armedAt.pct >= 80 - 1e-6,
+      `at arm point output should be ≥ shiftArmPercent, got ${armedAt.pct}`);
+
+    // While still filling and armed, output should track the up curve
+    // (not jump to 100 %). At level ~ 3.95, up curve = 95 %.
+    const fillingPct = ps.percControl;
+    assert.ok(fillingPct < 100 + 1e-6 && fillingPct >= 80 - 1e-6,
+      `filling-armed output should still be on up curve, got ${fillingPct}`);
+    // No hold captured yet (still filling).
+    assert.equal(ps._shiftHoldValue, null);
+
+    // ─── PHASE B: flip to draining ─────────────────────────────────────
+    // First drain tick captures the hold. We need direction='draining' as
+    // determined by _selectBestNetFlow → so q_in - q_out must be negative
+    // by more than the dead-band (1e-4).
+    await step(ps, 0, 0.05);                     // net = -0.05
+    assert.equal(ps.state.direction, 'draining');
+    // Hold captured = up curve at the level when direction flipped. The
+    // captured value is recorded BEFORE this drain tick lowered the level
+    // further, so it should match the last filling tick's output (within
+    // the per-tick step size 0.5 % ~ 0.005 m × 100 / 1 m).
+    assert.ok(ps._shiftHoldValue >= 80 - 1e-6,
+      `hold should be at least the arm threshold, got ${ps._shiftHoldValue}`);
+    const hold = ps._shiftHoldValue;
+
+    // ─── PHASE C: drain while level still ≥ shiftLevel — output HELD ───
+    // Drain until level just above shiftLevel=3.5. Output stays = hold.
+    let held = true;
+    for (let i = 0; i < 200 && levelOf(ps) > 3.51; i++) {
+      await step(ps, 0, 0.05);
+      if (Math.abs(ps.percControl - hold) > 1e-6) { held = false; break; }
+    }
+    assert.ok(held, 'output should HOLD at the captured value while level > shiftLevel');
+    assert.ok(Math.abs(ps.percControl - hold) < 1e-6,
+      `still expected hold=${hold}, got ${ps.percControl}`);
+
+    // ─── PHASE D: drain past shiftLevel — output ramps hold→0 ──────────
+    // Drain until clearly below shiftLevel (level ≤ 3.45). Output should drop.
+    while (levelOf(ps) > 3.45) await step(ps, 0, 0.05);
+    const justBelow = ps.percControl;
+    assert.ok(justBelow < hold,
+      `output should start dropping below shiftLevel, got ${justBelow} vs hold ${hold}`);
+    // Ramp midpoint: level=2.75 (midway in [2, 3.5]). Output ≈ hold × 0.5.
+    while (levelOf(ps) > 2.78 && levelOf(ps) > 2.0) await step(ps, 0, 0.05);
+    const mid = ps.percControl;
+    assert.ok(Math.abs(mid - hold * 0.5) < hold * 0.05,
+      `at level≈2.75 expected ≈ hold/2 (${hold * 0.5}), got ${mid}`);
+
+    // ─── PHASE E: level drops to startLevel — DISARM, output 0 ─────────
+    while (levelOf(ps) > 1.95) await step(ps, 0, 0.05);
+    assert.equal(ps._shiftArmed, false, 'should disarm when level reaches startLevel');
+    assert.equal(ps._shiftHoldValue, null);
+    assert.equal(ps.percControl, 0);
+  } finally {
+    ps._restore();
+  }
+});
+
+test('shifted ramp e2e: bounce — fill, drain a bit, refill, drain — captures fresh hold', async () => {
+  const { ps } = buildHarness();
+  try {
+    // Fill to arm + some headroom.
+    while (levelOf(ps) < 3.85) await step(ps, 0.05, 0);
+    assert.equal(ps._shiftArmed, true);
+
+    // First drain transition → hold #1.
+    await step(ps, 0, 0.05);
+    const hold1 = ps._shiftHoldValue;
+    assert.ok(hold1 >= 80 - 1e-6);
+
+    // Drain a tiny bit (level still > shiftLevel) → output stays at hold1.
+    for (let i = 0; i < 5; i++) await step(ps, 0, 0.05);
+    assert.ok(Math.abs(ps.percControl - hold1) < 1e-6);
+
+    // Flip back to filling at higher rate; up curve resumes; hold cleared.
+    await step(ps, 0.05, 0);
+    assert.equal(ps._shiftHoldValue, null);
+    assert.equal(ps._shiftArmed, true, 'should stay armed across the bounce');
+
+    // Fill higher than before (output goes higher).
+    while (levelOf(ps) < 3.95) await step(ps, 0.05, 0);
+    const fillingPct = ps.percControl;
+    assert.ok(fillingPct > hold1, `bounce should rise above first hold; got ${fillingPct} vs ${hold1}`);
+
+    // Drain again → fresh hold #2 = current up curve %.
+    await step(ps, 0, 0.05);
+    const hold2 = ps._shiftHoldValue;
+    assert.ok(hold2 > hold1, `second hold (${hold2}) should be > first (${hold1})`);
+  } finally {
+    ps._restore();
+  }
+});

tools/build-examples.js

@@ -0,0 +1,949 @@
+#!/usr/bin/env node
+'use strict';
+
+/**
+ * build-examples.js — regenerate the three example flows for pumpingStation.
+ *
+ * Source of truth for the Tier 1/2/3 example flows under examples/.
+ * Follows EVOLV/.claude/rules/node-red-flow-layout.md:
+ *   - Lane positions L0..L7 = [120, 360, 600, 840, 1080, 1320, 1560, 1800]
+ *   - S88 colours per Node-RED group (Process Cell = #0c99d9, Unit = #50a8d9,
+ *     Equipment Module = #86bbdd, Control Module = #a9daee, neutral = #dddddd)
+ *   - Cross-tab wiring via named link out/link in channels (cmd:* / evt:* / setup:*)
+ *   - ui-chart objects carry every mandatory key (interpolation, yAxisProperty,
+ *     xAxisPropertyType, action, removeOlder*, colors, etc.) — omitting any
+ *     causes FlowFuse to render the chart blank with no error.
+ *
+ * Only canonical pumpingStation topic names are used (per CONTRACT.md):
+ *   set.mode, set.inflow, set.demand, cmd.calibrate.volume, cmd.calibrate.level.
+ *
+ * Run from repo root or any cwd:
+ *   node nodes/pumpingStation/tools/build-examples.js
+ */
+
+const fs = require('fs');
+const path = require('path');
+
+const OUT_DIR = path.join(__dirname, '..', 'examples');
+
+/* ------------------------------------------------------------------ */
+/* Layout constants                                                    */
+/* ------------------------------------------------------------------ */
+
+const LANE_X = [120, 360, 600, 840, 1080, 1320, 1560, 1800];
+const S88 = {
+  AR: '#0f52a5',
+  PC: '#0c99d9',
+  UN: '#50a8d9',
+  EM: '#86bbdd',
+  CM: '#a9daee',
+  neutral: '#dddddd',
+};
+
+const CHART_COLORS = [
+  '#0095FF', '#FF0000', '#FF7F0E', '#2CA02C', '#A347E1',
+  '#D62728', '#FF9896', '#9467BD', '#C5B0D5',
+];
+
+/* ------------------------------------------------------------------ */
+/* Helpers                                                             */
+/* ------------------------------------------------------------------ */
+
+function tab(id, label, info) {
+  return { id, type: 'tab', label, disabled: false, info: info || '' };
+}
+
+function comment(id, z, name, x, y) {
+  return { id, type: 'comment', z, name, info: '', x, y, wires: [] };
+}
+
+function linkOut(id, z, name, x, y, links) {
+  return { id, type: 'link out', z, name, mode: 'link', links: links || [], x, y, wires: [] };
+}
+
+function linkIn(id, z, name, x, y, links, downstream) {
+  return { id, type: 'link in', z, name, links: links || [], x, y, wires: [downstream || []] };
+}
+
+function inject(id, z, name, topic, payload, payloadType, x, y, wires, opts) {
+  const o = opts || {};
+  return {
+    id, type: 'inject', z, name,
+    props: [
+      { p: 'topic', vt: 'str' },
+      { p: 'payload', v: String(payload), vt: payloadType },
+    ],
+    topic,
+    repeat: o.repeat || '',
+    crontab: '',
+    once: !!o.once,
+    onceDelay: o.onceDelay || '',
+    x, y,
+    wires: [wires || []],
+  };
+}
+
+function fn(id, z, name, code, x, y, wires, outputs) {
+  return {
+    id, type: 'function', z, name,
+    func: code,
+    outputs: outputs || 1,
+    noerr: 0,
+    initialize: '',
+    finalize: '',
+    libs: [],
+    x, y,
+    wires: wires || [[]],
+  };
+}
+
+function debugNode(id, z, name, x, y, complete, targetType, active) {
+  return {
+    id, type: 'debug', z, name,
+    active: active !== false,
+    tosidebar: true,
+    console: false,
+    tostatus: false,
+    complete: complete || 'payload',
+    targetType: targetType || 'msg',
+    x, y, wires: [],
+  };
+}
+
+function group(id, z, name, color, nodes, bbox) {
+  return {
+    id, type: 'group', z, name,
+    style: { label: true, stroke: '#000000', fill: color, 'fill-opacity': '0.10' },
+    nodes,
+    x: bbox.x, y: bbox.y, w: bbox.w, h: bbox.h,
+  };
+}
+
+function bboxOf(nodeList, ids, pad) {
+  const p = pad == null ? 20 : pad;
+  const ns = nodeList.filter((n) => ids.includes(n.id));
+  const xs = ns.map((n) => n.x || 0);
+  const ys = ns.map((n) => n.y || 0);
+  const minX = Math.min(...xs) - p;
+  const minY = Math.min(...ys) - p - 20;
+  const w = Math.max(...xs) - Math.min(...xs) + 200 + 2 * p;
+  const h = Math.max(...ys) - Math.min(...ys) + 60 + 2 * p;
+  return { x: minX, y: minY, w, h };
+}
+
+/* Build a fully-specified pumpingStation node. Every config field is set
+ * explicitly per rule §9 (no schema-default reliance for operational
+ * parameters). 50 m³ basin, 3.5 m height, inflow at 3 m, outflow at 0.2 m,
+ * overflow at 3.2 m. Level thresholds chosen so levelbased control activates
+ * mid-tank and saturates near overflow.
+ */
+function pumpingStationNode(id, z, name, x, y, wires) {
+  return {
+    id, type: 'pumpingStation', z, name,
+    simulator: false,
+    basinVolume: 50,
+    basinHeight: 3.5,
+    inflowLevel: 3.0,
+    outflowLevel: 0.2,
+    overflowLevel: 3.2,
+    defaultFluid: 'wastewater',
+    inletPipeDiameter: 0.3,
+    outletPipeDiameter: 0.3,
+    pipelineLength: 80,
+    maxDischargeHead: 24,
+    staticHead: 12,
+    maxInflowRate: 200,
+    temperatureReferenceDegC: 15,
+    timeleftToFullOrEmptyThresholdSeconds: 0,
+    enableDryRunProtection: true,
+    enableOverfillProtection: true,
+    dryRunThresholdPercent: 2,
+    overfillThresholdPercent: 98,
+    minHeightBasedOn: 'outlet',
+    processOutputFormat: 'process',
+    dbaseOutputFormat: 'influxdb',
+    refHeight: 'NAP',
+    basinBottomRef: 1,
+    uuid: 'example-ps-001',
+    supplier: 'WBD-RD',
+    category: 'station',
+    assetType: 'pumpingstation',
+    model: 'demo-50m3',
+    unit: 'm3/h',
+    enableLog: true,
+    logLevel: 'info',
+    positionVsParent: 'atEquipment',
+    positionIcon: '',
+    hasDistance: false,
+    distance: '',
+    distanceUnit: 'm',
+    distanceDescription: '',
+    controlMode: 'levelbased',
+    startLevel: 1.2,
+    minLevel: 0.4,
+    maxLevel: 2.8,
+    flowSetpoint: null,
+    flowDeadband: null,
+    x, y,
+    wires: wires || [[], [], []],
+  };
+}
+
+function measurementLevelNode(id, z, name, x, y, wires) {
+  return {
+    id, type: 'measurement', z, name,
+    mode: 'analog',
+    channels: '[]',
+    scaling: false,
+    i_min: 0, i_max: 0, i_offset: 0,
+    o_min: 0, o_max: 1,
+    simulator: true,
+    smooth_method: 'mean',
+    count: 5,
+    processOutputFormat: 'process',
+    dbaseOutputFormat: 'influxdb',
+    uuid: 'example-level-001',
+    supplier: 'vega',
+    category: 'sensor',
+    assetType: 'level',
+    model: 'VEGAPULS-31',
+    unit: 'm',
+    assetTagNumber: 'LT-001',
+    enableLog: false,
+    logLevel: 'error',
+    positionVsParent: 'atEquipment',
+    positionIcon: '',
+    hasDistance: false,
+    distance: 0,
+    distanceUnit: 'm',
+    distanceDescription: '',
+    x, y,
+    wires: wires || [[], [], []],
+  };
+}
+
+function machineGroupControlNode(id, z, name, x, y, wires) {
+  return {
+    id, type: 'machineGroupControl', z, name,
+    enableLog: true,
+    logLevel: 'info',
+    positionVsParent: 'atEquipment',
+    positionIcon: '',
+    hasDistance: false,
+    distance: '',
+    distanceUnit: 'm',
+    x, y,
+    wires: wires || [[], [], []],
+  };
+}
+
+function rotatingMachineNode(id, z, name, uuid, x, y, wires) {
+  return {
+    id, type: 'rotatingMachine', z, name,
+    speed: '1',
+    startup: '2', warmup: '1', shutdown: '2', cooldown: '1',
+    movementMode: 'staticspeed',
+    machineCurve: '',
+    uuid,
+    supplier: 'hidrostal',
+    category: 'pump',
+    assetType: 'pump-centrifugal',
+    model: 'hidrostal-H05K-S03R',
+    unit: 'm3/h',
+    curvePressureUnit: 'mbar',
+    curveFlowUnit: 'm3/h',
+    curvePowerUnit: 'kW',
+    curveControlUnit: '%',
+    enableLog: false,
+    logLevel: 'error',
+    positionVsParent: 'atEquipment',
+    positionIcon: '',
+    hasDistance: false,
+    distance: '',
+    distanceUnit: 'm',
+    distanceDescription: '',
+    x, y,
+    wires: wires || [[], [], []],
+  };
+}
+
+/* FlowFuse ui-chart with every required key (per layout rule §4). */
+function uiChart(id, z, group, name, label, order, yAxisLabel, x, y, color) {
+  return {
+    id, type: 'ui-chart', z, group, name, label,
+    order, width: 12, height: 6,
+    chartType: 'line',
+    category: 'topic',
+    categoryType: 'msg',
+    xAxisLabel: 'time',
+    xAxisType: 'time',
+    xAxisProperty: '',
+    xAxisPropertyType: 'timestamp',
+    xAxisFormat: '',
+    xAxisFormatType: 'auto',
+    yAxisLabel,
+    yAxisProperty: 'payload',
+    yAxisPropertyType: 'msg',
+    xmin: '', xmax: '', ymin: '', ymax: '',
+    bins: 10,
+    action: 'append',
+    stackSeries: false,
+    pointShape: 'circle',
+    pointRadius: 4,
+    interpolation: 'linear',
+    showLegend: true,
+    className: '',
+    removeOlder: '15',
+    removeOlderUnit: '60',
+    removeOlderPoints: '200',
+    colors: color ? [color, ...CHART_COLORS.slice(1)] : CHART_COLORS,
+    textColor: ['#666666'],
+    textColorDefault: true,
+    gridColor: ['#e5e5e5'],
+    gridColorDefault: true,
+    x, y, wires: [],
+  };
+}
+
+function uiText(id, z, group, name, label, order, x, y, format) {
+  return {
+    id, type: 'ui-text', z, group, name, label,
+    order, width: 4, height: 1,
+    format: format || '{{msg.payload}}',
+    layout: 'row-spread',
+    x, y, wires: [],
+  };
+}
+
+function uiSlider(id, z, group, name, label, order, x, y, topic, min, max, step) {
+  return {
+    id, type: 'ui-slider', z, group, name, label,
+    order, width: 6, height: 1,
+    passthru: true,
+    outs: 'end',
+    topic,
+    topicType: 'str',
+    min, max, step,
+    icon: '',
+    thumbLabel: 'always',
+    showValue: true,
+    className: '',
+    x, y, wires: [[]],
+  };
+}
+
+function uiDropdown(id, z, group, name, label, order, x, y, topic, options, wires) {
+  return {
+    id, type: 'ui-dropdown', z, group, name, label,
+    order, width: 6, height: 1,
+    passthru: true,
+    multiple: false,
+    options: options.map((o) => ({ label: o, value: o, type: 'str' })),
+    payload: '',
+    topic,
+    topicType: 'str',
+    x, y,
+    wires: [wires || []],
+  };
+}
+
+function uiBase(id) {
+  return {
+    id, type: 'ui-base',
+    name: 'EVOLV Demo',
+    path: '/dashboard',
+    appIcon: '',
+    includeClientData: true,
+    acceptsClientConfig: ['ui-notification', 'ui-control'],
+    showPathInSidebar: false,
+    headerContent: 'page',
+    navigationStyle: 'default',
+    titleBarStyle: 'default',
+  };
+}
+
+function uiTheme(id) {
+  return {
+    id, type: 'ui-theme',
+    name: 'EVOLV Theme',
+    colors: {
+      surface: '#ffffff', primary: '#0c99d9', bgPage: '#eeeeee',
+      groupBg: '#ffffff', groupOutline: '#cccccc',
+    },
+    sizes: {
+      density: 'default', pagePadding: '14px', groupGap: '14px',
+      groupBorderRadius: '6px', widgetGap: '12px',
+    },
+  };
+}
+
+function uiPage(id, base, theme, name, path, order) {
+  return {
+    id, type: 'ui-page', name, ui: base, path,
+    icon: 'water',
+    layout: 'grid', theme,
+    breakpoints: [{ name: 'Default', px: '0', cols: '12' }],
+    order, className: '',
+  };
+}
+
+function uiGroup(id, page, name, width, height, order) {
+  return {
+    id, type: 'ui-group', name, page, width, height, order,
+    showTitle: true, className: '',
+  };
+}
+
+/* ------------------------------------------------------------------ */
+/* Tier 1 — 01-Basic.json                                              */
+/* ------------------------------------------------------------------ */
+
+function buildBasic() {
+  const Z = 'ps_basic_tab';
+  const nodes = [];
+
+  nodes.push(tab(Z, 'PumpingStation - Basic',
+    'Tier 1: single pumpingStation node driven by inject nodes only. ' +
+    'Demonstrates the canonical Phase-2 topic API: set.mode, set.inflow, set.demand.'));
+
+  nodes.push(comment('ps_basic_title', Z,
+    'PumpingStation - Basic\n' +
+    '━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━\n' +
+    'A 50 m³ basin (3.5 m tall, inflow at 3.0 m, outflow at 0.2 m,\n' +
+    'overflow at 3.2 m). controlMode = levelbased, manual demand allowed\n' +
+    'only when set.mode = manual.\n\n' +
+    'HOW TO USE:\n' +
+    '  1. Deploy the flow.\n' +
+    '  2. Click "set.mode = manual" so set.demand is honoured.\n' +
+    '  3. Click "set.inflow = 60 m3/h" to push wastewater into the basin.\n' +
+    '  4. Watch the basin fill on Port 0 (level, volume, percControl rise).\n' +
+    '  5. Click "calibrate volume 25 m3" to jump straight to half-full.\n\n' +
+    'Aliases (changemode, q_in, Qd, …) still work but log a deprecation\n' +
+    'warning - fresh flows use the canonical names.', 600, 40));
+
+  // Lane 0: link-in placeholders (none for Tier 1 - all inputs are local).
+  // Lane 2..3: inject nodes (we keep them in lane 1 for proximity).
+  const injectMode    = inject('ps_basic_inj_mode',    Z, 'set.mode = manual',    'set.mode',    'manual', 'str', 200, 160, ['ps_basic_node']);
+  const injectModeLvl = inject('ps_basic_inj_mode_lvl',Z, 'set.mode = levelbased','set.mode',    'levelbased', 'str', 220, 200, ['ps_basic_node']);
+  const injectInflow  = inject('ps_basic_inj_inflow',  Z, 'set.inflow = 60 m3/h', 'set.inflow',  '60',     'num', 200, 260, ['ps_basic_node']);
+  const injectDemand  = inject('ps_basic_inj_demand',  Z, 'set.demand = 40 %',    'set.demand',  '40',     'num', 200, 300, ['ps_basic_node']);
+  const injectCalVol  = inject('ps_basic_inj_calvol',  Z, 'calibrate volume 25 m3','cmd.calibrate.volume','25','num', 220, 360, ['ps_basic_node']);
+  const injectCalLvl  = inject('ps_basic_inj_callvl',  Z, 'calibrate level 1.5 m','cmd.calibrate.level','1.5','num', 220, 400, ['ps_basic_node']);
+  nodes.push(injectMode, injectModeLvl, injectInflow, injectDemand, injectCalVol, injectCalLvl);
+
+  // Lane 5 (PC): the pumpingStation itself.
+  const ps = pumpingStationNode('ps_basic_node', Z, 'Pumping Station', LANE_X[5], 300,
+    [['ps_basic_format'], ['ps_basic_dbg_influx'], ['ps_basic_dbg_parent']]);
+  nodes.push(ps);
+
+  // Lane 6: format/merge function for Port 0.
+  const formatFn = fn('ps_basic_format', Z, 'Merge deltas + format',
+    "const p = (msg && msg.payload && typeof msg.payload === 'object') ? msg.payload : {};\n" +
+    "const cache = context.get('c') || {};\n" +
+    "Object.assign(cache, p);\n" +
+    "context.set('c', cache);\n" +
+    "function pick(prefix) {\n" +
+    "  for (const k of Object.keys(cache)) if (k === prefix || k.indexOf(prefix + '.') === 0) {\n" +
+    "    const v = Number(cache[k]); if (Number.isFinite(v)) return v;\n" +
+    "  } return null;\n" +
+    "}\n" +
+    "const vol  = pick('volume.predicted.atequipment');\n" +
+    "const lvl  = pick('level.predicted.atequipment');\n" +
+    "const flIn = pick('flow.predicted.in');\n" +
+    "msg.payload = {\n" +
+    "  state: cache.state || 'unknown',\n" +
+    "  controlMode: cache.controlMode || cache.mode || 'n/a',\n" +
+    "  direction: cache.direction || 'n/a',\n" +
+    "  percControl: cache.percControl != null ? Number(cache.percControl).toFixed(1) + ' %' : 'n/a',\n" +
+    "  volume: vol != null ? vol.toFixed(2) + ' m3' : 'n/a',\n" +
+    "  volumePercent: cache.volumePercent != null ? Number(cache.volumePercent).toFixed(1) + ' %' : 'n/a',\n" +
+    "  level: lvl != null ? lvl.toFixed(3) + ' m' : 'n/a',\n" +
+    "  inflow: flIn != null ? (flIn * 3600).toFixed(1) + ' m3/h' : 'n/a',\n" +
+    "  timeToFull: cache.timeToFull != null ? Number(cache.timeToFull).toFixed(0) + ' s' : 'n/a',\n" +
+    "  timeToEmpty: cache.timeToEmpty != null ? Number(cache.timeToEmpty).toFixed(0) + ' s' : 'n/a'\n" +
+    "};\nreturn msg;",
+    LANE_X[6], 280, [['ps_basic_dbg_process']]);
+  nodes.push(formatFn);
+
+  // Lane 7: debug taps.
+  nodes.push(debugNode('ps_basic_dbg_process', Z, 'Port 0: Process', LANE_X[7], 240, 'payload', 'msg', true));
+  nodes.push(debugNode('ps_basic_dbg_influx',  Z, 'Port 1: InfluxDB', LANE_X[7], 320, 'true', 'full', false));
+  nodes.push(debugNode('ps_basic_dbg_parent',  Z, 'Port 2: Parent reg', LANE_X[7], 380, 'true', 'full', true));
+
+  // Wrap the station + its formatter in a Process Cell group box.
+  const psGroupIds = ['ps_basic_node', 'ps_basic_format'];
+  nodes.push(group('grp_ps_basic', Z, 'Pumping Station (PC)', S88.PC, psGroupIds,
+    bboxOf(nodes, psGroupIds, 30)));
+
+  return nodes;
+}
+
+/* ------------------------------------------------------------------ */
+/* Tier 2 — 02-Integration.json                                        */
+/* ------------------------------------------------------------------ */
+
+function buildIntegration() {
+  const TAB_PROC = 'ps_int_proc';
+  const TAB_SETUP = 'ps_int_setup';
+  const nodes = [];
+
+  nodes.push(tab(TAB_PROC,  'Process Plant',
+    'Tier 2: pumpingStation + measurement child + machineGroupControl parent with two rotatingMachine pumps. ' +
+    'Demonstrates Phase-2 parent/child handshakes and the canonical set.mode/set.inflow/set.demand topics.'));
+  nodes.push(tab(TAB_SETUP, 'Setup',
+    'Deploy-time once-true injects that initialise control modes on the EVOLV nodes.'));
+
+  /* ---------- Process Plant tab ---------------------------------- */
+
+  nodes.push(comment('ps_int_title', TAB_PROC,
+    'PumpingStation - Integration\n' +
+    '━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━\n' +
+    'L0 link-ins | L2 level sensor (CM) | L3 pumps (EM) | L4 MGC (UN) | L5 station (PC).\n' +
+    'Pumps register with MGC via Port 2; MGC and the level sensor register with the station via Port 2.\n' +
+    'Cross-tab channels: setup:* drive once-true initialisation from the Setup tab.', 600, 40));
+
+  /* Link-ins on L0 receive from the Setup tab. */
+  const linInMode  = linkIn('lin_setup_mode',  TAB_PROC, 'setup:to-ps-mode',   LANE_X[0], 500, [], ['ps_int_station']);
+  const linInInflow = linkIn('lin_setup_inflow', TAB_PROC, 'setup:to-ps-inflow', LANE_X[0], 560, [], ['ps_int_station']);
+  const linInMgcMode = linkIn('lin_setup_mgcmode', TAB_PROC, 'setup:to-mgc-mode', LANE_X[0], 360, [], ['ps_int_mgc']);
+  nodes.push(linInMode, linInInflow, linInMgcMode);
+
+  /* L2: level measurement (Control Module). */
+  const levelMeas = measurementLevelNode('meas_level', TAB_PROC, 'Basin level sensor',
+    LANE_X[2], 700, [['ps_int_dbg_level'], [], ['ps_int_station']]);
+  nodes.push(levelMeas);
+  // Simulator measurement injector for the level sensor (push a varying level so PS sees something).
+  const levelInj = inject('ps_int_inj_level', TAB_PROC, 'sim level 1.6 m', 'measurement', '1.6', 'num', LANE_X[0], 700, ['meas_level']);
+  nodes.push(levelInj);
+
+  /* L3: two rotatingMachine pumps (Equipment Module). */
+  const pumpA = rotatingMachineNode('pump_a', TAB_PROC, 'Pump A', 'example-pump-a',
+    LANE_X[3], 320, [['ps_int_dbg_pa'], [], ['ps_int_mgc']]);
+  const pumpB = rotatingMachineNode('pump_b', TAB_PROC, 'Pump B', 'example-pump-b',
+    LANE_X[3], 400, [['ps_int_dbg_pb'], [], ['ps_int_mgc']]);
+  nodes.push(pumpA, pumpB);
+
+  /* L4: MGC (Unit). */
+  const mgc = machineGroupControlNode('ps_int_mgc', TAB_PROC, 'Pump Group',
+    LANE_X[4], 360, [['ps_int_dbg_mgc'], [], ['ps_int_station']]);
+  nodes.push(mgc);
+
+  /* L5: pumpingStation (Process Cell). */
+  const station = pumpingStationNode('ps_int_station', TAB_PROC, 'Pumping Station',
+    LANE_X[5], 520, [['ps_int_format'], ['ps_int_dbg_influx'], []]);
+  nodes.push(station);
+
+  /* L6: formatter for the station's Port 0. */
+  const formatFn = fn('ps_int_format', TAB_PROC, 'Merge deltas + format',
+    "const p = (msg && msg.payload && typeof msg.payload === 'object') ? msg.payload : {};\n" +
+    "const cache = context.get('c') || {}; Object.assign(cache, p); context.set('c', cache);\n" +
+    "function pick(prefix){ for (const k of Object.keys(cache)) if (k===prefix||k.indexOf(prefix+'.')===0){ const v=Number(cache[k]); if(Number.isFinite(v)) return v;} return null; }\n" +
+    "const vol=pick('volume.predicted.atequipment'), lvl=pick('level.predicted.atequipment'), flIn=pick('flow.predicted.in'), flOut=pick('flow.predicted.out');\n" +
+    "msg.payload = {\n" +
+    "  state: cache.state || 'unknown',\n" +
+    "  controlMode: cache.controlMode || cache.mode || 'n/a',\n" +
+    "  direction: cache.direction || 'n/a',\n" +
+    "  percControl: cache.percControl != null ? Number(cache.percControl).toFixed(1)+' %' : 'n/a',\n" +
+    "  volume: vol != null ? vol.toFixed(2)+' m3' : 'n/a',\n" +
+    "  volumePercent: cache.volumePercent != null ? Number(cache.volumePercent).toFixed(1)+' %' : 'n/a',\n" +
+    "  level: lvl != null ? lvl.toFixed(3)+' m' : 'n/a',\n" +
+    "  inflow: flIn != null ? (flIn*3600).toFixed(1)+' m3/h' : 'n/a',\n" +
+    "  outflow: flOut != null ? (flOut*3600).toFixed(1)+' m3/h' : 'n/a',\n" +
+    "  childCount: cache.childCount != null ? cache.childCount : 'n/a'\n" +
+    "};\nreturn msg;",
+    LANE_X[6], 520, [['ps_int_dbg_process']]);
+  nodes.push(formatFn);
+
+  /* L7: debug taps for the various ports. */
+  nodes.push(debugNode('ps_int_dbg_process', TAB_PROC, 'PS Port 0: Process',   LANE_X[7], 480, 'payload', 'msg', true));
+  nodes.push(debugNode('ps_int_dbg_influx',  TAB_PROC, 'PS Port 1: InfluxDB',  LANE_X[7], 540, 'true', 'full', false));
+  nodes.push(debugNode('ps_int_dbg_mgc',     TAB_PROC, 'MGC Port 0',           LANE_X[7], 360, 'payload', 'msg', true));
+  nodes.push(debugNode('ps_int_dbg_pa',      TAB_PROC, 'Pump A Port 0',        LANE_X[7], 320, 'payload', 'msg', false));
+  nodes.push(debugNode('ps_int_dbg_pb',      TAB_PROC, 'Pump B Port 0',        LANE_X[7], 400, 'payload', 'msg', false));
+  nodes.push(debugNode('ps_int_dbg_level',   TAB_PROC, 'Level Port 0',         LANE_X[7], 700, 'payload', 'msg', false));
+
+  /* Group boxes. */
+  const pumpAIds = ['pump_a', 'ps_int_dbg_pa'];
+  const pumpBIds = ['pump_b', 'ps_int_dbg_pb'];
+  const mgcIds   = ['ps_int_mgc', 'ps_int_dbg_mgc', 'lin_setup_mgcmode'];
+  const stationIds = ['ps_int_station', 'ps_int_format', 'ps_int_dbg_process', 'ps_int_dbg_influx', 'lin_setup_mode', 'lin_setup_inflow'];
+  const levelIds = ['meas_level', 'ps_int_inj_level', 'ps_int_dbg_level'];
+  nodes.push(group('grp_pumpa', TAB_PROC,   'Pump A (EM)',          S88.EM, pumpAIds,   bboxOf(nodes, pumpAIds, 25)));
+  nodes.push(group('grp_pumpb', TAB_PROC,   'Pump B (EM)',          S88.EM, pumpBIds,   bboxOf(nodes, pumpBIds, 25)));
+  nodes.push(group('grp_mgc',   TAB_PROC,   'Pump Group MGC (UN)',  S88.UN, mgcIds,     bboxOf(nodes, mgcIds, 25)));
+  nodes.push(group('grp_station', TAB_PROC, 'Pumping Station (PC)', S88.PC, stationIds, bboxOf(nodes, stationIds, 25)));
+  nodes.push(group('grp_level', TAB_PROC,   'Level Sensor (CM)',    S88.CM, levelIds,   bboxOf(nodes, levelIds, 25)));
+
+  /* ---------- Setup tab ----------------------------------------- */
+
+  nodes.push(comment('setup_title', TAB_SETUP,
+    'Deploy-time setup\n' +
+    '━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━\n' +
+    'Fires once after each deploy: pushes the canonical set.mode / set.inflow /\n' +
+    'set.demand topics across cross-tab channels into the Process Plant tab.',
+    LANE_X[2], 40));
+
+  const setMode   = inject('setup_inj_mode',     TAB_SETUP, 'set.mode = levelbased',    'set.mode',   'levelbased', 'str', LANE_X[0], 160, ['lout_setup_mode'],   { once: true, onceDelay: '0.5' });
+  const setMgc    = inject('setup_inj_mgcmode',  TAB_SETUP, 'MGC set.mode = auto',      'set.mode',   'auto',       'str', LANE_X[0], 220, ['lout_setup_mgcmode'],{ once: true, onceDelay: '0.5' });
+  const setInflow = inject('setup_inj_inflow',   TAB_SETUP, 'seed inflow 60 m3/h',      'set.inflow', '60',         'num', LANE_X[0], 280, ['lout_setup_inflow'], { once: true, onceDelay: '1.0' });
+  nodes.push(setMode, setMgc, setInflow);
+
+  const loutMode    = linkOut('lout_setup_mode',    TAB_SETUP, 'setup:to-ps-mode',    LANE_X[7], 160, ['lin_setup_mode']);
+  const loutMgcMode = linkOut('lout_setup_mgcmode', TAB_SETUP, 'setup:to-mgc-mode',   LANE_X[7], 220, ['lin_setup_mgcmode']);
+  const loutInflow  = linkOut('lout_setup_inflow',  TAB_SETUP, 'setup:to-ps-inflow',  LANE_X[7], 280, ['lin_setup_inflow']);
+  nodes.push(loutMode, loutMgcMode, loutInflow);
+
+  // Setup tab group.
+  const setupIds = ['setup_inj_mode', 'setup_inj_mgcmode', 'setup_inj_inflow',
+                    'lout_setup_mode', 'lout_setup_mgcmode', 'lout_setup_inflow'];
+  nodes.push(group('grp_setup', TAB_SETUP, 'Deploy-time setup', S88.neutral, setupIds, bboxOf(nodes, setupIds, 25)));
+
+  return nodes;
+}
+
+/* ------------------------------------------------------------------ */
+/* Tier 3 — 03-Dashboard.json                                          */
+/* ------------------------------------------------------------------ */
+
+function buildDashboard() {
+  const TAB_PROC = 'ps_dash_proc';
+  const TAB_UI = 'ps_dash_ui';
+  const TAB_SETUP = 'ps_dash_setup';
+  const nodes = [];
+
+  nodes.push(tab(TAB_PROC,  'Process Plant',
+    'Tier 3: full station with measurement + MGC + 2 pumps, formatted for live dashboard.'));
+  nodes.push(tab(TAB_UI,    'Dashboard UI',
+    'FlowFuse dashboard 2.0: 3 charts (flow / level / volumePercent), text widgets and 2 sliders.'));
+  nodes.push(tab(TAB_SETUP, 'Setup',
+    'Once-true injects: initial mode + initial inflow seed.'));
+
+  /* ---------- FlowFuse dashboard scaffolding -------------------- */
+
+  nodes.push(uiBase('ps_dash_base'));
+  nodes.push(uiTheme('ps_dash_theme'));
+  nodes.push(uiPage('ps_dash_page', 'ps_dash_base', 'ps_dash_theme', 'PumpingStation Demo', '/pumping-station', 1));
+  nodes.push(uiGroup('ps_dash_grp_ctrl',   'ps_dash_page', 'Controls',         6, 1, 1));
+  nodes.push(uiGroup('ps_dash_grp_status', 'ps_dash_page', 'Operator Status',  6, 1, 2));
+  nodes.push(uiGroup('ps_dash_grp_trend',  'ps_dash_page', 'Live Trends',     12, 1, 3));
+
+  /* ---------- Process Plant tab --------------------------------- */
+
+  nodes.push(comment('ps_dash_proc_title', TAB_PROC,
+    'Process Plant\n━━━━━━━━━━━━━━━━━\nFull station with parent (MGC) and 2 pump children.\n' +
+    'Events go to Dashboard UI through evt:ps; commands come back through cmd:ps-mode and cmd:ps-demand.',
+    600, 40));
+
+  /* L0 link-ins: setup + dashboard commands. */
+  const linModeProc   = linkIn('lin_proc_mode',   TAB_PROC, 'cmd:ps-mode',    LANE_X[0], 480, [], ['ps_dash_station']);
+  const linDemandProc = linkIn('lin_proc_demand', TAB_PROC, 'cmd:ps-demand',  LANE_X[0], 540, [], ['ps_dash_station']);
+  const linSetupMode  = linkIn('lin_proc_setupmode', TAB_PROC, 'setup:to-ps-mode',  LANE_X[0], 420, [], ['ps_dash_station']);
+  const linSetupInflow= linkIn('lin_proc_setupinflow', TAB_PROC, 'setup:to-ps-inflow',LANE_X[0], 600, [], ['ps_dash_station']);
+  nodes.push(linModeProc, linDemandProc, linSetupMode, linSetupInflow);
+
+  /* L2 level sensor with simulator. */
+  const levelMeas = measurementLevelNode('ps_dash_meas_level', TAB_PROC, 'Basin level sensor',
+    LANE_X[2], 700, [[], [], ['ps_dash_station']]);
+  nodes.push(levelMeas);
+  nodes.push(inject('ps_dash_inj_level', TAB_PROC, 'sim level 1.6 m', 'measurement', '1.6', 'num',
+    LANE_X[0], 700, ['ps_dash_meas_level']));
+
+  /* L3 pumps. */
+  const pumpA = rotatingMachineNode('ps_dash_pump_a', TAB_PROC, 'Pump A', 'example-pump-a',
+    LANE_X[3], 320, [[], [], ['ps_dash_mgc']]);
+  const pumpB = rotatingMachineNode('ps_dash_pump_b', TAB_PROC, 'Pump B', 'example-pump-b',
+    LANE_X[3], 400, [[], [], ['ps_dash_mgc']]);
+  nodes.push(pumpA, pumpB);
+
+  /* L4 MGC. */
+  const mgc = machineGroupControlNode('ps_dash_mgc', TAB_PROC, 'Pump Group',
+    LANE_X[4], 360, [[], [], ['ps_dash_station']]);
+  nodes.push(mgc);
+
+  /* L5 pumpingStation. */
+  const station = pumpingStationNode('ps_dash_station', TAB_PROC, 'Pumping Station',
+    LANE_X[5], 520, [['ps_dash_trend_split'], [], []]);
+  nodes.push(station);
+
+  /* L6 trend-split fn: one output per chart + one output for the status text widgets.
+   * Outputs:
+   *   0 -> chart_flow      ({topic: 'Inflow', payload: m3/h}, {topic: 'Outflow', payload: m3/h})
+   *   1 -> chart_level     ({topic: 'Level', payload: m})
+   *   2 -> chart_volpct    ({topic: 'Volume%', payload: %})
+   *   3 -> text_status     (compact state string)
+   *   4 -> text_perc       (percControl)
+   *   5 -> text_direction  (direction)
+   *   6 -> text_timetoempty(timeToEmpty)
+   */
+  const trendCode =
+    "const p = (msg && msg.payload && typeof msg.payload === 'object') ? msg.payload : {};\n" +
+    "const cache = context.get('c') || {}; Object.assign(cache, p); context.set('c', cache);\n" +
+    "function pick(prefix){ for (const k of Object.keys(cache)) if (k===prefix||k.indexOf(prefix+'.')===0){ const v=Number(cache[k]); if(Number.isFinite(v)) return v;} return null; }\n" +
+    "const flowIn  = pick('flow.predicted.in');\n" +
+    "const flowOut = pick('flow.predicted.out');\n" +
+    "const level   = pick('level.predicted.atequipment');\n" +
+    "const volPct  = Number(cache.volumePercent);\n" +
+    "const ts = Date.now();\n" +
+    "const flowMsgs = [];\n" +
+    "if (flowIn  != null) flowMsgs.push({ topic: 'Inflow',  payload: flowIn  * 3600, timestamp: ts });\n" +
+    "if (flowOut != null) flowMsgs.push({ topic: 'Outflow', payload: flowOut * 3600, timestamp: ts });\n" +
+    "const flowOut1 = flowMsgs.length ? flowMsgs : null;\n" +
+    "const levelOut = level != null ? { topic: 'Level', payload: level, timestamp: ts } : null;\n" +
+    "const volOut   = Number.isFinite(volPct) ? { topic: 'Volume%', payload: volPct, timestamp: ts } : null;\n" +
+    "const stateStr = `state=${cache.state||'?'} | mode=${cache.controlMode||cache.mode||'?'}`;\n" +
+    "const percStr  = cache.percControl != null ? Number(cache.percControl).toFixed(1) + ' %' : 'n/a';\n" +
+    "const dirStr   = cache.direction || 'n/a';\n" +
+    "const tEmpty   = cache.timeToEmpty != null ? Number(cache.timeToEmpty).toFixed(0) + ' s' : 'n/a';\n" +
+    "return [\n" +
+    "  flowOut1,\n" +
+    "  levelOut,\n" +
+    "  volOut,\n" +
+    "  { payload: stateStr },\n" +
+    "  { payload: percStr },\n" +
+    "  { payload: dirStr },\n" +
+    "  { payload: tEmpty }\n" +
+    "];";
+  const trendSplit = fn('ps_dash_trend_split', TAB_PROC, 'Trend split + status', trendCode,
+    LANE_X[6], 520,
+    [
+      ['lout_evt_flow'],
+      ['lout_evt_level'],
+      ['lout_evt_volpct'],
+      ['lout_evt_state'],
+      ['lout_evt_perc'],
+      ['lout_evt_dir'],
+      ['lout_evt_tempty'],
+    ], 7);
+  nodes.push(trendSplit);
+
+  /* L7 link-outs into the Dashboard UI tab. */
+  const loutFlow   = linkOut('lout_evt_flow',   TAB_PROC, 'evt:flow',   LANE_X[7], 420, ['lin_ui_flow']);
+  const loutLevel  = linkOut('lout_evt_level',  TAB_PROC, 'evt:level',  LANE_X[7], 460, ['lin_ui_level']);
+  const loutVolPct = linkOut('lout_evt_volpct', TAB_PROC, 'evt:volpct', LANE_X[7], 500, ['lin_ui_volpct']);
+  const loutState  = linkOut('lout_evt_state',  TAB_PROC, 'evt:state',  LANE_X[7], 540, ['lin_ui_state']);
+  const loutPerc   = linkOut('lout_evt_perc',   TAB_PROC, 'evt:perc',   LANE_X[7], 580, ['lin_ui_perc']);
+  const loutDir    = linkOut('lout_evt_dir',    TAB_PROC, 'evt:dir',    LANE_X[7], 620, ['lin_ui_dir']);
+  const loutTempty = linkOut('lout_evt_tempty', TAB_PROC, 'evt:tempty', LANE_X[7], 660, ['lin_ui_tempty']);
+  nodes.push(loutFlow, loutLevel, loutVolPct, loutState, loutPerc, loutDir, loutTempty);
+
+  /* Process tab groups. */
+  const procStationIds = ['ps_dash_station', 'ps_dash_trend_split',
+                          'lin_proc_mode', 'lin_proc_demand', 'lin_proc_setupmode', 'lin_proc_setupinflow',
+                          'lout_evt_flow', 'lout_evt_level', 'lout_evt_volpct', 'lout_evt_state', 'lout_evt_perc', 'lout_evt_dir', 'lout_evt_tempty'];
+  const procPumpAIds   = ['ps_dash_pump_a'];
+  const procPumpBIds   = ['ps_dash_pump_b'];
+  const procMgcIds     = ['ps_dash_mgc'];
+  const procLevelIds   = ['ps_dash_meas_level', 'ps_dash_inj_level'];
+  nodes.push(group('ps_dash_grp_station', TAB_PROC, 'Pumping Station (PC)', S88.PC, procStationIds, bboxOf(nodes, procStationIds, 25)));
+  nodes.push(group('ps_dash_grp_pa',      TAB_PROC, 'Pump A (EM)',          S88.EM, procPumpAIds,   bboxOf(nodes, procPumpAIds, 25)));
+  nodes.push(group('ps_dash_grp_pb',      TAB_PROC, 'Pump B (EM)',          S88.EM, procPumpBIds,   bboxOf(nodes, procPumpBIds, 25)));
+  nodes.push(group('ps_dash_grp_mgc',     TAB_PROC, 'Pump Group MGC (UN)',  S88.UN, procMgcIds,     bboxOf(nodes, procMgcIds, 25)));
+  nodes.push(group('ps_dash_grp_level',   TAB_PROC, 'Level Sensor (CM)',    S88.CM, procLevelIds,   bboxOf(nodes, procLevelIds, 25)));
+
+  /* ---------- Dashboard UI tab ---------------------------------- */
+
+  nodes.push(comment('ps_dash_ui_title', TAB_UI,
+    'Dashboard UI\n━━━━━━━━━━━━━━━\nLink-ins on L0 receive evt:* from Process Plant.\n' +
+    'Sliders on L2 emit cmd:* back to Process Plant.\n' +
+    'Charts use the trend-split pattern: one chart per metric, series labelled by msg.topic.',
+    600, 40));
+
+  /* L0 link-ins from the process side. */
+  nodes.push(linkIn('lin_ui_flow',   TAB_UI, 'evt:flow',   LANE_X[0], 220, [], ['ui_chart_flow']));
+  nodes.push(linkIn('lin_ui_level',  TAB_UI, 'evt:level',  LANE_X[0], 320, [], ['ui_chart_level']));
+  nodes.push(linkIn('lin_ui_volpct', TAB_UI, 'evt:volpct', LANE_X[0], 420, [], ['ui_chart_volpct']));
+  nodes.push(linkIn('lin_ui_state',  TAB_UI, 'evt:state',  LANE_X[0], 520, [], ['ui_text_state']));
+  nodes.push(linkIn('lin_ui_perc',   TAB_UI, 'evt:perc',   LANE_X[0], 560, [], ['ui_text_perc']));
+  nodes.push(linkIn('lin_ui_dir',    TAB_UI, 'evt:dir',    LANE_X[0], 600, [], ['ui_text_dir']));
+  nodes.push(linkIn('lin_ui_tempty', TAB_UI, 'evt:tempty', LANE_X[0], 640, [], ['ui_text_tempty']));
+
+  /* L4 charts and text widgets. */
+  nodes.push(uiChart('ui_chart_flow',   TAB_UI, 'ps_dash_grp_trend', 'Flow trend',   'Flow (m³/h)',  1, 'm³/h', LANE_X[4], 220));
+  nodes.push(uiChart('ui_chart_level',  TAB_UI, 'ps_dash_grp_trend', 'Level trend',  'Level (m)',    2, 'm',    LANE_X[4], 320));
+  nodes.push(uiChart('ui_chart_volpct', TAB_UI, 'ps_dash_grp_trend', 'Volume %',     'Volume (%)',   3, '%',    LANE_X[4], 420));
+  nodes.push(uiText( 'ui_text_state',   TAB_UI, 'ps_dash_grp_status','State',        'Station state',1, LANE_X[4], 520));
+  nodes.push(uiText( 'ui_text_perc',    TAB_UI, 'ps_dash_grp_status','percControl',  'Control %',    2, LANE_X[4], 560));
+  nodes.push(uiText( 'ui_text_dir',     TAB_UI, 'ps_dash_grp_status','direction',    'Direction',    3, LANE_X[4], 600));
+  nodes.push(uiText( 'ui_text_tempty',  TAB_UI, 'ps_dash_grp_status','timeToEmpty',  'Time to empty',4, LANE_X[4], 640));
+
+  /* L2 controls: dropdown for mode + slider for demand. */
+  const modeDropdown = uiDropdown('ui_dd_mode', TAB_UI, 'ps_dash_grp_ctrl',
+    'Mode', 'Control mode', 1, LANE_X[2], 160, 'set.mode',
+    ['manual', 'levelbased', 'flowbased', 'none'], ['ui_wrap_mode']);
+  const demandSlider = uiSlider('ui_sl_demand', TAB_UI, 'ps_dash_grp_ctrl',
+    'Demand', 'Manual demand (m³/h)', 2, LANE_X[2], 220, 'set.demand', 0, 200, 5);
+  nodes.push(modeDropdown, demandSlider);
+  // Slider wires need explicit wiring (uiSlider helper leaves wires empty so we set them post-creation).
+  demandSlider.wires = [['ui_wrap_demand']];
+
+  /* L4 wrappers: enforce the canonical topic on the outgoing msg. */
+  const wrapMode = fn('ui_wrap_mode', TAB_UI, 'topic=set.mode',
+    "msg.topic = 'set.mode';\nmsg.payload = String(msg.payload || 'manual');\nreturn msg;",
+    LANE_X[4], 160, [['lout_cmd_mode']]);
+  const wrapDemand = fn('ui_wrap_demand', TAB_UI, 'topic=set.demand',
+    "msg.topic = 'set.demand';\nmsg.payload = Number(msg.payload);\nreturn Number.isFinite(msg.payload) ? msg : null;",
+    LANE_X[4], 220, [['lout_cmd_demand']]);
+  nodes.push(wrapMode, wrapDemand);
+
+  /* L7 link-outs to the process plant. */
+  nodes.push(linkOut('lout_cmd_mode',   TAB_UI, 'cmd:ps-mode',   LANE_X[7], 160, ['lin_proc_mode']));
+  nodes.push(linkOut('lout_cmd_demand', TAB_UI, 'cmd:ps-demand', LANE_X[7], 220, ['lin_proc_demand']));
+
+  /* UI tab groups (mirror the dashboard groups). */
+  const uiCtrlIds   = ['ui_dd_mode', 'ui_sl_demand', 'ui_wrap_mode', 'ui_wrap_demand',
+                       'lout_cmd_mode', 'lout_cmd_demand'];
+  const uiStatusIds = ['ui_text_state', 'ui_text_perc', 'ui_text_dir', 'ui_text_tempty',
+                       'lin_ui_state', 'lin_ui_perc', 'lin_ui_dir', 'lin_ui_tempty'];
+  const uiTrendIds  = ['ui_chart_flow', 'ui_chart_level', 'ui_chart_volpct',
+                       'lin_ui_flow', 'lin_ui_level', 'lin_ui_volpct'];
+  nodes.push(group('grp_ui_ctrl',   TAB_UI, 'Controls (PC)',         S88.PC, uiCtrlIds,   bboxOf(nodes, uiCtrlIds, 25)));
+  nodes.push(group('grp_ui_status', TAB_UI, 'Operator status (PC)',  S88.PC, uiStatusIds, bboxOf(nodes, uiStatusIds, 25)));
+  nodes.push(group('grp_ui_trend',  TAB_UI, 'Live trends (PC)',      S88.PC, uiTrendIds,  bboxOf(nodes, uiTrendIds, 25)));
+
+  /* ---------- Setup tab ----------------------------------------- */
+
+  nodes.push(comment('ps_dash_setup_title', TAB_SETUP, 'Deploy-time setup\n━━━━━━━━━━━━━━━━━━━\n' +
+    'Initialises set.mode = levelbased and seeds an inflow at deploy time.',
+    LANE_X[2], 40));
+
+  nodes.push(inject('ps_dash_setup_mode',   TAB_SETUP, 'set.mode = levelbased', 'set.mode',   'levelbased', 'str',
+    LANE_X[0], 160, ['ps_dash_lout_setup_mode'],   { once: true, onceDelay: '0.5' }));
+  nodes.push(inject('ps_dash_setup_inflow', TAB_SETUP, 'seed inflow 60 m3/h',   'set.inflow', '60',         'num',
+    LANE_X[0], 220, ['ps_dash_lout_setup_inflow'], { once: true, onceDelay: '1.0' }));
+
+  nodes.push(linkOut('ps_dash_lout_setup_mode',   TAB_SETUP, 'setup:to-ps-mode',   LANE_X[7], 160, ['lin_proc_setupmode']));
+  nodes.push(linkOut('ps_dash_lout_setup_inflow', TAB_SETUP, 'setup:to-ps-inflow', LANE_X[7], 220, ['lin_proc_setupinflow']));
+
+  const setupIds = ['ps_dash_setup_mode', 'ps_dash_setup_inflow',
+                    'ps_dash_lout_setup_mode', 'ps_dash_lout_setup_inflow'];
+  nodes.push(group('ps_dash_grp_setup', TAB_SETUP, 'Deploy-time setup', S88.neutral, setupIds, bboxOf(nodes, setupIds, 25)));
+
+  return nodes;
+}
+
+/* ------------------------------------------------------------------ */
+/* README                                                              */
+/* ------------------------------------------------------------------ */
+
+const README = `# pumpingStation - Example Flows
+
+Three Node-RED flows demonstrating the Phase-2 pumpingStation node on the
+canonical topic API (\`set.mode\`, \`set.inflow\`, \`set.demand\`,
+\`cmd.calibrate.volume\`, \`cmd.calibrate.level\`). Legacy aliases
+(\`changemode\`, \`q_in\`, \`Qd\`, \`calibratePredictedVolume\`,
+\`calibratePredictedLevel\`, \`registerChild\`) still work but log a
+one-time deprecation warning; these fresh flows use the canonical names only.
+
+## Files
+
+| File | Tier | Tabs | Purpose |
+|---|---|---|---|
+| \`01-Basic.json\` | 1 | Process Plant | Single pumpingStation driven by inject nodes - no parent, no dashboard. |
+| \`02-Integration.json\` | 2 | Process Plant + Setup | Adds a \`measurement\` level child and a \`machineGroupControl\` parent with two \`rotatingMachine\` pumps. Demonstrates the Phase-2 parent/child handshake. |
+| \`03-Dashboard.json\` | 3 | Process Plant + Dashboard UI + Setup | Tier 2 plumbing plus a FlowFuse Dashboard 2.0 page with 3 charts (flow / level / volume %), text widgets, and 2 controls (mode dropdown + demand slider). |
+
+## Prerequisites
+
+- Node-RED with the EVOLV package installed (so the \`pumpingStation\`,
+  \`measurement\`, \`machineGroupControl\`, and \`rotatingMachine\` node
+  types are registered).
+- For \`03-Dashboard.json\`: \`@flowfuse/node-red-dashboard\` (Dashboard 2.0).
+
+## How to load
+
+\`\`\`bash
+# Drop a file into a running Node-RED instance using its Admin API.
+curl -X POST -H 'Content-Type: application/json' \\
+  --data @nodes/pumpingStation/examples/01-Basic.json \\
+  http://localhost:1880/flows
+\`\`\`
+
+Or in the editor: **Menu -> Import -> select file -> Import**. The flows
+import into their own tabs and can be deployed immediately.
+
+## 01-Basic - what to try
+
+1. Deploy.
+2. Inject \`set.mode = manual\`.
+3. Inject \`set.inflow = 60 m3/h\` - the basin starts filling. Watch the
+   formatted Port 0 payload in the debug sidebar.
+4. Inject \`set.demand = 40 %\` - in manual mode this would feed any
+   registered children; here there are no pump children so it is logged
+   and shown on Port 0.
+5. Inject \`cmd.calibrate.volume = 25 m3\` to jump the predicted-volume
+   integrator to half-full.
+
+## 02-Integration - what to try
+
+1. Deploy. The Setup tab fires \`set.mode = levelbased\` to the station
+   and \`set.mode = auto\` to the MGC.
+2. The two pumps register with the MGC via Port 2; the MGC and the level
+   sensor register with the station via Port 2. Watch the registration
+   debug taps to confirm.
+3. The level inject pushes a 1.6 m measurement so the station sees a
+   non-zero starting level. Setup also seeds \`set.inflow = 60 m3/h\`.
+4. The station's \`controlMode = levelbased\` then drives the MGC, which
+   dispatches to Pump A / Pump B.
+
+## 03-Dashboard - what to try
+
+1. Deploy.
+2. Open the dashboard at \`http://localhost:1880/dashboard/page/pumping-station\`.
+3. Use the **Control mode** dropdown to switch between \`manual\`,
+   \`levelbased\`, \`flowbased\`, \`none\`.
+4. In manual mode, drag the **Manual demand** slider - the demand cascades
+   to the MGC and on to the pumps.
+5. The three charts (flow, level, volume %) plot live data; the four text
+   widgets show state, percControl, direction, and time-to-empty.
+
+## Layout conventions
+
+These flows follow the EVOLV layout rule set in
+\`.claude/rules/node-red-flow-layout.md\`:
+
+- Tabs split by **concern**: Process Plant (EVOLV nodes) / Dashboard UI
+  (\`ui-*\` widgets) / Setup (once-true injects).
+- Cross-tab wiring via **named link out / link in channels**:
+  \`setup:to-ps-mode\`, \`setup:to-ps-inflow\`, \`setup:to-mgc-mode\`,
+  \`cmd:ps-mode\`, \`cmd:ps-demand\`, \`evt:flow\`, \`evt:level\`,
+  \`evt:volpct\`, \`evt:state\`, \`evt:perc\`, \`evt:dir\`, \`evt:tempty\`.
+- **Lane positions** L0-L7 = \`[120, 360, 600, 840, 1080, 1320, 1560, 1800]\`,
+  driven by each node's S88 level (Process Cell on L5, Unit on L4,
+  Equipment on L3, Control Module on L2).
+- **Group boxes** wrap each parent + its direct children, coloured by the
+  parent's S88 level.
+
+## Regenerating
+
+These flows are generated from \`tools/build-examples.js\`. Edit the
+generator, never the JSON, then:
+
+\`\`\`bash
+node nodes/pumpingStation/tools/build-examples.js
+\`\`\`
+
+The script writes \`01-Basic.json\`, \`02-Integration.json\`, and
+\`03-Dashboard.json\` into this directory.
+`;
+
+/* ------------------------------------------------------------------ */
+/* Main                                                                */
+/* ------------------------------------------------------------------ */
+
+function writeFlow(filename, builder) {
+  const flow = builder();
+  const dest = path.join(OUT_DIR, filename);
+  fs.writeFileSync(dest, JSON.stringify(flow, null, 2) + '\n', 'utf8');
+  console.log(`wrote ${dest}  (${flow.length} nodes)`);
+}
+
+function main() {
+  if (!fs.existsSync(OUT_DIR)) fs.mkdirSync(OUT_DIR, { recursive: true });
+  writeFlow('01-Basic.json', buildBasic);
+  writeFlow('02-Integration.json', buildIntegration);
+  writeFlow('03-Dashboard.json', buildDashboard);
+  fs.writeFileSync(path.join(OUT_DIR, 'README.md'), README, 'utf8');
+  console.log(`wrote ${path.join(OUT_DIR, 'README.md')}`);
+}
+
+main();

wiki/Home.md

@@ -0,0 +1,131 @@
+# pumpingStation
+
+![code-ref](https://img.shields.io/badge/code--ref-b825ac1-blue) ![s88](https://img.shields.io/badge/S88-Process_Cell-0c99d9) ![status](https://img.shields.io/badge/status-trial--ready-brightgreen)
+
+A `pumpingStation` models a wet-well lift station: one basin with sensors, and one or more pumps that move water against an elevation difference. It integrates basin volume each tick, picks a control mode (level-based by default), and sends a demand setpoint to its pumps so the basin level stays inside its safe operating band.
+
+---
+
+## At a glance
+
+| Thing | Value |
+|:---|:---|
+| What it represents | A wet-well lift station: a basin + N pumps |
+| S88 level | Process Cell |
+| Use it when | You need to lift water from a low point to a higher one, with sensors driving demand |
+| Don't use it for | Pressurised distribution networks (use a pumpingStation cascade or VGC instead), or a single pump with no basin (parent a `rotatingMachine` directly) |
+| Children it accepts | `measurement`, `machine`, `machinegroup`, `pumpingstation` |
+
+---
+
+## How it looks in Node-RED
+
+![pumpingStation node and edit dialog](_partial-screenshots/pumpingStation/01-node-and-editor.png)
+
+---
+
+## What it models
+
+A rectangular basin with measured inflow, measured (or pump-summed) outflow, and a level sensor. The diagram below is the live source; open it in [draw.io](https://app.diagrams.net/) to edit.
+
+![Basin model — physical reference diagram](diagrams/basin-model.drawio.svg)
+
+The basin has five horizontal reference lines that matter to the controller:
+
+| Line | Role |
+|:---|:---|
+| `overflowLevel` | Physical weir crest. Above this level the basin is spilling. |
+| `maxLevel` | Demand saturates at 100 % at or above this level. |
+| `startLevel` | Falling-ramp returns to 0 % demand here; deadband upper bound. |
+| `minLevel` | Below this level the controller commands all pumps off. |
+| `dryRunLevel` | Pump-protection cutoff (safety layer, mode-independent). |
+
+---
+
+## Try it — 3-minute demo
+
+Import the basic example flow, deploy, and watch the basin react to inject buttons.
+
+```bash
+curl -X POST -H 'Content-Type: application/json' \
+  --data @nodes/pumpingStation/examples/01-Basic.json \
+  http://localhost:1880/flow
+```
+
+![Basic example flow in Node-RED editor](_partial-screenshots/pumpingStation/02-basic-flow.png)
+
+What to click in the dashboard after deploy:
+
+1. `set.mode = levelbased` → the controller switches to level-based mode.
+2. `set.inflow = 60 m³/h` → inflow is now feeding the basin.
+3. `cmd.calibrate.level = 1.5 m` → the volume integrator syncs to a known level.
+4. Watch Port 0 in the debug pane: level rises, predicted volume integrates, demand follows the curve.
+
+> [!IMPORTANT]
+> **GIF needed.** Demo recording of the basic flow reacting to mode + inflow clicks. Save as `wiki/_partial-gifs/pumpingStation/01-basic-demo.gif`, target ≤ 1 MB after `gifsicle -O3 --lossy=80`.
+
+---
+
+## Typical wiring
+
+The two patterns you'll see most.
+
+### Standalone (`01-Basic.json`)
+
+![Standalone wiring — inject buttons → pumpingStation → debug](_partial-screenshots/pumpingStation/03-wiring-standalone.png)
+
+### With a measurement child and an MGC parent
+
+![Integrated wiring — measurement → pumpingStation → MGC → 2 pumps](_partial-screenshots/pumpingStation/04-wiring-integrated.png)
+
+---
+
+## The five things you'll send
+
+| Topic | Payload | What it does |
+|:---|:---|:---|
+| `set.mode` | `"levelbased"` or `"manual"` | Switches control strategy. Manual exposes `set.demand` as the direct setpoint. |
+| `set.demand` | number, m³/h | Operator outflow setpoint. Honoured in `manual` mode. |
+| `set.inflow` | number, m³/h | Push a measured inflow into the basin balance (if you don't have a `measurement` child for inflow). |
+| `cmd.calibrate.level` | number, m | Sync the volume integrator to a known level reading. Useful at startup. |
+| `cmd.calibrate.volume` | number, m³ | Sync the volume integrator to a known volume reading. |
+
+## What you'll see come out
+
+Sample Port 0 message (delta-compressed — only changed fields each tick):
+
+```json
+{
+  "topic": "pumpingStation#PS1",
+  "payload": {
+    "level": 1.62,
+    "volume": 32.4,
+    "direction": "filling",
+    "demand": 38,
+    "safety": { "blocked": false },
+    "etaSeconds": 412
+  }
+}
+```
+
+| Field | Meaning |
+|:---|:---|
+| `level` | Current basin level (m). Measured if a level `measurement` is registered; predicted otherwise. |
+| `volume` | Integrated predicted volume (m³). |
+| `direction` | `filling` / `draining` / `steady` based on the flow dead-band. |
+| `demand` | What the station is asking its pumps to do (0–100 %). |
+| `safety.blocked` | True when the safety layer is overriding the control loop. |
+| `etaSeconds` | Predicted time to full (if filling) or empty (if draining). |
+
+---
+
+## Need more?
+
+| Page | What you'll find |
+|:---|:---|
+| [Reference — Contracts](Reference-Contracts) | Full topic contract, config schema, child registration filters |
+| [Reference — Architecture](Reference-Architecture) | Code map, state chart, lifecycle sequence, output ports |
+| [Reference — Examples](Reference-Examples) | All shipped example flows + Docker compose snippet + debug recipes |
+| [Reference — Limitations](Reference-Limitations) | When not to use this node, known limitations, open questions |
+
+[EVOLV master wiki](https://gitea.wbd-rd.nl/RnD/EVOLV/wiki/Home) · [Topology Patterns](https://gitea.wbd-rd.nl/RnD/EVOLV/wiki/Topology-Patterns) · [Topic Conventions](https://gitea.wbd-rd.nl/RnD/EVOLV/wiki/Topic-Conventions)

wiki/Reference-Architecture.md

@@ -0,0 +1,158 @@
+# Reference — Architecture
+
+![code-ref](https://img.shields.io/badge/code--ref-b825ac1-blue)
+
+> [!NOTE]
+> Code structure for `pumpingStation`: the three-tier sandwich, the `src/` layout, the FSM, the lifecycle, and the output-port pipeline. Everything here is reproducible from `src/`. For an intuitive overview, return to [Home](Home).
+
+---
+
+## Three-tier code layout
+
+```
+nodes/pumpingStation/
+|
++-- pumpingStation.js              entry: RED.nodes.registerType('pumpingstation', NodeClass)
+|
++-- src/
+|     nodeClass.js                 extends BaseNodeAdapter (Node-RED bridge)
+|     specificClass.js             extends BaseDomain (orchestration only)
+|     |
+|     +-- commands/
+|     |     index.js               topic descriptors
+|     |     handlers.js            pure handler functions
+|     |
+|     +-- basin/
+|     |     BasinGeometry.js       basin shape, level <-> volume conversion
+|     |     thresholdValidator.js  derives + validates safety / control thresholds
+|     |
+|     +-- measurement/
+|     |     flowAggregator.js      net-flow + predicted-volume integrator
+|     |     measurementRouter.js   routes measurement-child events
+|     |     calibration.js         calibrate-to-known-level / volume helpers
+|     |
+|     +-- control/
+|     |     index.js               mode dispatcher (levelbased, manual, ...)
+|     |
+|     +-- safety/
+|           safetyController.js    dry-run + high-volume + panic guards
+```
+
+### Tier responsibilities
+
+| Tier | File | What it owns | Touches `RED.*` |
+|:---|:---|:---|:---:|
+| entry | `pumpingStation.js` | Type registration | Yes |
+| nodeClass | `src/nodeClass.js` | Input routing, tick loop, output ports, status badge | Yes |
+| specificClass | `src/specificClass.js` | Wire concern modules in `configure()`; run them in `tick()`; nothing more | No |
+
+The specificClass is stitching, not implementation. All real work lives in `basin/`, `measurement/`, `control/`, `safety/`.
+
+---
+
+## State chart &mdash; safety controller
+
+The pumpingStation does not have a per-mode FSM (control modes are stateless transfer functions). The state machine that matters is the **safety controller**, which can block or pass control commands.
+
+```mermaid
+stateDiagram-v2
+    [*] --> running
+    running --> blocked_dryrun: level < dryRunLevel
+    running --> blocked_highvolume: level >= highVolumeSafetyLevel
+    running --> blocked_panic: no-data panic timer expires
+    blocked_dryrun --> running: level recovers above hysteresis
+    blocked_highvolume --> running: level falls below hysteresis
+    blocked_panic --> running: data resumes
+```
+
+Each `blocked_*` state sets `safety.blocked = true` on Port 0 and prevents the control layer from emitting a non-zero demand. The hysteresis is mode-independent and lives in `src/safety/safetyController.js`.
+
+### Safety-rules asymmetry
+
+The `dryRunLevel` and `highVolumeSafetyLevel` rules differ in **which children they stop**:
+
+![Dry-run vs high-volume safety asymmetry](diagrams/safety-rules.drawio.svg)
+
+| Rule | What stops | Why |
+|:---|:---|:---|
+| Dry run | All children (pumps off) | Pumps cavitate without water; protect the equipment |
+| High volume | Only outflow-side pumps | Spill is the lesser evil; some pumps may still serve safety functions |
+
+---
+
+## Lifecycle &mdash; one tick
+
+```mermaid
+sequenceDiagram
+    autonumber
+    participant tick as 1s tick
+    participant sc as specificClass.tick()
+    participant fa as flowAggregator
+    participant safe as safetyController
+    participant ctrl as control[mode]
+    participant out as Port 0 / 1
+
+    tick->>sc: tick()
+    sc->>fa: update predicted volume
+    fa->>fa: pick best net-flow source (measured / aggregated)
+    sc->>safe: evaluate
+    alt safety blocked
+        safe-->>sc: { blocked: true }
+        Note over sc: skip control layer
+    else safe to run
+        sc->>ctrl: strategies[mode].run(context)
+        ctrl-->>sc: demand 0..100
+    end
+    sc->>out: getOutput() &mdash; emit Port 0 + Port 1 deltas
+```
+
+Each tick is 1 Hz. The output pipeline (Port 0 + Port 1) is driven by `outputUtils.formatMsg` &mdash; only changed fields are sent.
+
+---
+
+## Output ports
+
+| Port | Carries | Sample shape |
+|:---|:---|:---|
+| 0 (process) | Delta-compressed state snapshot consumed by downstream Node-RED logic | `{topic, payload: {level, volume, demand, direction, safety, etaSeconds}}` |
+| 1 (telemetry) | InfluxDB line-protocol string with the same fields as Port 0 | `pumpingStation,id=PS1 level=1.62,volume=32.4 ...` |
+| 2 (register / control) | `child.register` upward at init; internal control plumbing later | `{topic: 'child.register', payload: {ref, softwareType, config}}` |
+
+See [EVOLV &mdash; Telemetry](https://gitea.wbd-rd.nl/RnD/EVOLV/wiki/Telemetry) for the full InfluxDB layout.
+
+---
+
+## Tick timing and event sources
+
+| Source | Where it fires | What it triggers |
+|:---|:---|:---|
+| `setInterval(1000)` | `BaseNodeAdapter` lifecycle | `specificClass.tick()` &mdash; the per-second integrator update |
+| `measurement` emitter event | Child node's `emitter.emit(<type>.measured.<position>, ...)` | `measurementRouter` updates the basin balance |
+| Inbound `msg.topic` | Node-RED input wire | `commandRegistry` dispatch to a handler |
+| `child.register` from another node | Port 2 of a child | `_subscribeMeasurement` or `_subscribePredictedFlow` |
+
+---
+
+## Where to start reading
+
+| If you're changing... | Read first |
+|:---|:---|
+| Basin geometry, level/volume conversion | `src/basin/BasinGeometry.js`, `src/basin/thresholdValidator.js` |
+| Net-flow selection, predicted-volume integration | `src/measurement/flowAggregator.js` |
+| Calibration commands | `src/measurement/calibration.js` |
+| Control modes (level-based, manual, future modes) | `src/control/index.js` |
+| Safety blocks | `src/safety/safetyController.js` |
+| Topic dispatch | `src/commands/index.js` + `src/commands/handlers.js` |
+| Adapter, ticking, output ports | `src/nodeClass.js` (and `BaseNodeAdapter` in `generalFunctions`) |
+
+---
+
+## Related pages
+
+| Page | Why |
+|:---|:---|
+| [Home](Home) | Intuitive overview |
+| [Reference &mdash; Contracts](Reference-Contracts) | Topic + config + child filters |
+| [Reference &mdash; Examples](Reference-Examples) | Shipped example flows |
+| [Reference &mdash; Limitations](Reference-Limitations) | Known limitations and open questions |
+| [EVOLV &mdash; Architecture](https://gitea.wbd-rd.nl/RnD/EVOLV/wiki/Architecture) | Platform-wide three-tier pattern |

wiki/Reference-Contracts.md

@@ -0,0 +1,164 @@
+# Reference — Contracts
+
+![code-ref](https://img.shields.io/badge/code--ref-b825ac1-blue) ![autogen](https://img.shields.io/badge/sections-autogenerated-orange)
+
+> [!NOTE]
+> Full topic contract, configuration schema, and child-registration filters for `pumpingStation`. The topic-contract and data-model sections are **regenerated by `npm run wiki:all`** — do not hand-edit between the `BEGIN AUTOGEN` / `END AUTOGEN` markers. Source of truth for everything on this page: the node's `src/commands/index.js`, `src/specificClass.js` `configure()`, and the schema at `generalFunctions/src/configs/pumpingStation.json`.
+>
+> For an intuitive overview, return to the [Home](Home).
+
+---
+
+## Topic contract
+
+The **Unit** column reflects each descriptor's `units: { measure, default }` declaration. The default unit is what the commandRegistry coerces incoming `msg.unit` values to before the handler runs.
+
+<!-- BEGIN AUTOGEN: topic-contract -->
+
+| Canonical topic | Aliases | Payload | Unit | Effect |
+|---|---|---|---|---|
+| `set.mode` | `changemode` | `string` | — | Switch the station between auto / manual control modes. |
+| `child.register` | `registerChild` | `string` | — | Register a child node (machine group, measurement, …) with this station. |
+| `cmd.calibrate.volume` | `calibratePredictedVolume` | any | `volume` (default `m3`) | Calibrate the predicted-volume integrator to a known basin volume. |
+| `cmd.calibrate.level` | `calibratePredictedLevel` | any | `length` (default `m`) | Calibrate the predicted-volume integrator to a known basin level. |
+| `set.inflow` | `q_in` | any | `volumeFlowRate` (default `m3/h`) | Push a measured inflow value into the basin balance. |
+| `set.outflow` | `q_out` | any | `volumeFlowRate` (default `m3/h`) | Push a measured outflow value into the basin balance. |
+| `set.demand` | `Qd` | any | `volumeFlowRate` (default `m3/h`) | Operator outflow demand setpoint for the station. |
+
+<!-- END AUTOGEN: topic-contract -->
+
+---
+
+## Data model &mdash; `getOutput()` shape
+
+Keys composed each tick by `specificClass.getOutput()` and emitted via `outputUtils.formatMsg` on Port 0. Delta-compressed: consumers see only the keys that changed.
+
+<!-- BEGIN AUTOGEN: data-model -->
+
+| Key | Type | Unit | Sample |
+|---|---|---|---|
+| `direction` | string | — | `"steady"` |
+| `dryRunLevel` | number | — | `0.20400000000000001` |
+| `dryRunSafetyVol` | number | — | `0.20400000000000001` |
+| `flowSource` | null | — | `null` |
+| `heightBasin` | number | m | `1` |
+| `highVolumeSafetyLevel` | number | — | `2.45` |
+| `highVolumeSafetyVol` | number | — | `2.45` |
+| `inflowLevel` | number | m | `2` |
+| `inletPipeDiameter` | number | — | `0.4` |
+| `maxVol` | number | m3 | `1` |
+| `maxVolAtOverflow` | number | m3 | `2.5` |
+| `minHeightBasedOn` | string | — | `"outlet"` |
+| `minVol` | number | m3 | `0.2` |
+| `minVolAtInflow` | number | m3 | `2` |
+| `minVolAtOutflow` | number | m3 | `0.2` |
+| `outflowLevel` | number | m | `0.2` |
+| `outletPipeDiameter` | number | — | `0.4` |
+| `overflowLevel` | number | m | `2.5` |
+| `percControl` | number | % | `0` |
+| `predictedOverflowRate` | number | — | `0` |
+| `predictedOverflowVolume` | number | — | `0` |
+| `predictedUnderflowVolume` | number | — | `0` |
+| `surfaceArea` | number | m2 | `1` |
+| `timeleft` | null | s | `null` |
+| `volEmptyBasin` | number | m3 | `1` |
+| `volume.predicted.atequipment.wikigen-pumpingstation-id` | number | m3 | `0.2` |
+
+<!-- END AUTOGEN: data-model -->
+
+Sample values come from a stub instantiation in `wikiGen` &mdash; in a live deployment the volume key is shaped `volume.<variant>.<position>.<childId>` per the standard [Measurement Key Shape](https://gitea.wbd-rd.nl/RnD/EVOLV/wiki/Topic-Conventions#measurement-key-shape).
+
+---
+
+## Configuration schema &mdash; editor form to config keys
+
+Source of truth: `generalFunctions/src/configs/pumpingStation.json`.
+
+### Basin geometry (`config.basin`)
+
+| Form field | Config key | Default | Unit | Notes |
+|:---|:---|:---|:---|:---|
+| Basin Volume | `basin.volume` | `1` | m3 | Total geometric storage from floor to rim |
+| Basin Height | `basin.height` | `1` | m | Floor-to-rim wall height |
+| Inlet Elevation | `basin.inflowLevel` | `2` | m | Bottom of incoming pipe, from floor |
+| Outlet Elevation | `basin.outflowLevel` | `0.2` | m | Top of pump-suction pipe, from floor |
+| Inlet Pipe Diameter | `basin.inletPipeDiameter` | `0.4` | m | For future hydraulic upgrades |
+| Outlet Pipe Diameter | `basin.outletPipeDiameter` | `0.4` | m | For future hydraulic upgrades |
+| Overflow Level | `basin.overflowLevel` | `2.5` | m | Physical overflow weir crest |
+
+### Safety thresholds (`config.safety`)
+
+| Form field | Config key | Default | Notes |
+|:---|:---|:---|:---|
+| High-Volume Safety % | `safety.highVolumeSafetyThresholdPercent` | `98` | Trigger high-volume safety at this fill % |
+| Dry-Run Safety Level | `safety.dryRunLevel` | `0.2` | Below this level all pumps stop |
+| Enable High-Volume Safety | `safety.enableHighVolumeSafety` | `true` | Master switch |
+
+> [!WARNING]
+> Earlier versions used `enableOverfillProtection` and `overfillThresholdPercent`. Those names are deprecated. The current canonical names are `enableHighVolumeSafety` and `highVolumeSafetyThresholdPercent`. See `.claude/refactor/OPEN_QUESTIONS.md` for the alias-removal timeline.
+
+### Control mode (`config.control`)
+
+| Form field | Config key | Default | Notes |
+|:---|:---|:---|:---|
+| Mode | `control.mode` | `"levelbased"` | One of `levelbased`, `manual`, `flowbased`*, `pressureBased`*, `percentageBased`*, `powerBased`*, `hybrid`*. Asterisked modes are placeholders in code. |
+| Level Curve Type | `control.levelbased.curveType` | `"linear"` | `linear` or `log` |
+| Log Curve Factor | `control.levelbased.logCurveFactor` | `0.5` | Slope tuning for log curve |
+| Min Level | `control.levelbased.minLevel` | `0.3` | Demand hard-zero below this |
+| Start Level | `control.levelbased.startLevel` | `0.5` | Falling-ramp returns to 0 % here |
+| Stop Level | `control.levelbased.stopLevel` | `0.4` | Schmitt-trigger lower bound for pump-count keep-alive |
+| Max Level | `control.levelbased.maxLevel` | `2.3` | Demand saturates at 100 % here |
+| Enable Shifted Ramp | `control.levelbased.enableShiftedRamp` | `true` | Hysteresis-armed shift between rising / falling ramps |
+| Manual Flow Setpoint | `control.manual.flowSetpoint` | `0` | Honoured in `manual` mode |
+
+### General (`config.general`)
+
+| Form field | Config key | Default | Notes |
+|:---|:---|:---|:---|
+| Time-left full / empty threshold | `general.timeleftToFullOrEmptyThresholdSeconds` | `120` | ETA below this triggers warning state |
+| Flow dead-band | `general.flowThreshold` | `1e-4` m³/s | Net-flow below this is treated as steady |
+
+---
+
+## Child registration
+
+Source: `nodes/pumpingStation/src/specificClass.js` `configure()`, lines 107&ndash;116.
+
+| Software type | Filter | Wired to | Side-effect |
+|:---|:---|:---|:---|
+| `measurement` | any | `_subscribeMeasurement` | Subscribes to the measurement's emitter; updates basin balance |
+| `machine` | only if no `machinegroup` parent is present | direct dispatch | Bypassed when an MGC is the predicted-flow source |
+| `machinegroup` | any | `_subscribePredictedFlow` | Reads aggregated predicted flow from the MGC |
+| `pumpingstation` | any | `_subscribePredictedFlow` | Cascaded PS &mdash; reads predicted outflow of upstream station |
+
+The router only subscribes to the **highest-level aggregator** for predicted flow. If an MGC is present, direct `machine` children are not double-counted.
+
+---
+
+## Unit policy
+
+Source: `nodes/pumpingStation/src/specificClass.js` lines 21&ndash;30.
+
+| Quantity | Canonical (internal) | Output (rendered) |
+|:---|:---|:---|
+| Flow | `m3/s` | `m3/s` (also `netFlowRate`) |
+| Level | `m` | `m` |
+| Volume | `m3` | `m3` |
+| Pressure | `Pa` | (not surfaced) |
+| Power | `W` | (not surfaced) |
+| Temperature | `K` | (not surfaced) |
+
+`overflowVolume` and `underflowVolume` are explicitly listed in the policy output so the `MeasurementContainer` keeps the integrator's `m3` unit on those streams (`FlowAggregator` writes spill / underflow per tick).
+
+---
+
+## Related pages
+
+| Page | Why |
+|:---|:---|
+| [Home](Home) | Intuitive overview |
+| [Reference &mdash; Architecture](Reference-Architecture) | Code map, state chart, lifecycle |
+| [Reference &mdash; Examples](Reference-Examples) | Shipped example flows |
+| [Reference &mdash; Limitations](Reference-Limitations) | Known limitations and open questions |
+| [EVOLV &mdash; Topic Conventions](https://gitea.wbd-rd.nl/RnD/EVOLV/wiki/Topic-Conventions) | Platform-wide topic rules |
+| [EVOLV &mdash; Telemetry](https://gitea.wbd-rd.nl/RnD/EVOLV/wiki/Telemetry) | Port 0 / 1 / 2 InfluxDB layout |

wiki/Reference-Examples.md

@@ -0,0 +1,147 @@
+# Reference — Examples
+
+![code-ref](https://img.shields.io/badge/code--ref-b825ac1-blue)
+
+> [!NOTE]
+> Every example flow shipped under `nodes/pumpingStation/examples/`, plus how to load them, what they show, and the debug recipes that go with them. Live source: `nodes/pumpingStation/examples/`.
+
+---
+
+## Shipped examples
+
+| File | Tier | What it shows |
+|:---|:---:|:---|
+| `examples/01-Basic.json` | 1 | Single pumpingStation driven by inject nodes — no parent, no dashboard. Numbered driver groups for Mode / Flow signals / Operator demand / Calibration. |
+| `examples/02-Dashboard.json` | 2 | Same command surface as Basic, driven by a FlowFuse Dashboard 2.0 page (Controls + live Status rows + 4 trend charts + raw-output table). |
+
+---
+
+## Loading a flow
+
+### Via the editor
+
+1. Open the Node-RED editor at `http://localhost:1880`.
+2. Menu → Import.
+3. Drag-and-drop the JSON file, or paste its contents.
+4. Click Deploy.
+
+### Via the Admin API
+
+```bash
+curl -X POST -H 'Content-Type: application/json' \
+  --data @nodes/pumpingStation/examples/01-Basic.json \
+  http://localhost:1880/flow
+```
+
+---
+
+## Example 01 — Basic standalone
+
+![Basic example flow in Node-RED editor](_partial-screenshots/pumpingStation/02-basic-flow.png)
+
+### Nodes on the tab
+
+| Type | Purpose |
+|:---|:---|
+| `comment` | Tab header / instructions |
+| `inject` × 7 | Buttons to send `set.mode` (manual / levelbased), `set.inflow`, `set.outflow`, `set.demand`, `cmd.calibrate.volume`, `cmd.calibrate.level` |
+| `pumpingStation` | The unit under test |
+| `debug` × 3 | Port 0 (process), Port 1 (InfluxDB), Port 2 (parent reg) |
+
+Driver injects are wrapped in four numbered groups: **1. Control mode**, **2. Flow signals (inflow / outflow)**, **3. Operator demand (manual mode only)**, **4. Calibration**. Debug nodes sit in a separate **Debug outputs (sidebar)** group on the right.
+
+### What to do after deploy
+
+1. (optional) Click `set.mode = manual` if you want `set.demand` to forward; otherwise leave it on the default `levelbased` and the ramp drives demand from level.
+2. Click `set.inflow = 60 m³/h` — the basin starts filling. Watch Port 0 in the debug pane: `direction` flips to `filling`, `level` rises, predicted volume integrates.
+3. In manual mode: click `set.demand = 40` — the value surfaces as `manualDemand` on Port 0/1 and in the node status badge.
+4. Click `cmd.calibrate.volume = 25 m³` (or `cmd.calibrate.level = 1.5 m`) to snap the predicted-volume integrator.
+
+> [!IMPORTANT]
+> **GIF needed.** Demo recording of steps 1–4. Save as `wiki/_partial-gifs/pumpingStation/01-basic-demo.gif`, target ≤ 1 MB after `gifsicle -O3 --lossy=80`.
+
+---
+
+## Example 02 — Dashboard
+
+> [!IMPORTANT]
+> **Screenshot needed.** Two captures from `02-Dashboard.json`:
+> 1. The editor tab (left controls column + pumpingStation + Live-status group on the right).
+> 2. The rendered dashboard at `http://localhost:1880/dashboard/pumpingstation-basic`.
+>
+> Save as `wiki/_partial-screenshots/pumpingStation/05-ex02-editor.png` and `06-ex02-dashboard.png`.
+> Replace this callout with both image links.
+
+### What it adds vs Example 01
+
+| Addition | Why |
+|:---|:---|
+| FlowFuse `ui-base` + `ui-theme` + `ui-page` setup | One dashboard page hosting four widget groups |
+| `ui-button` × 7 (Controls group) | Replace the inject buttons one-for-one — each carries the canonical `msg.topic` directly |
+| `ui-text` × 7 (Status group) | Live readouts: Mode, Direction, Level, Volume, Volume %, percControl, Manual demand |
+| `ui-chart` × 4 (Trends group) | Level (m), Volume (m³), Volume % (0–100), Flow (m³/h, multi-series Inflow / Outflow / Net) |
+| `ui-template` (Raw output group) | Full key/value table of the latest Port 0 cache — every field the node emits, sorted |
+| Fan-out function | Caches last-known values so delta-only Port 0 updates never blank a status row, and forwards numeric values to the charts |
+
+The buttons fire the **same canonical `msg.topic`** as the inject nodes in Example 01 — there is no separate dashboard command surface to learn.
+
+Required: `@flowfuse/node-red-dashboard` (Dashboard 2.0) installed in the Node-RED instance.
+
+### What to do after deploy
+
+1. Open `http://localhost:1880/dashboard/pumpingstation-basic`.
+2. Click `Mode: Manual` or `Mode: Levelbased`.
+3. Click `Inflow 60 m³/h` — Status panel level / volume / vol% rise; the Level / Volume / Flow charts plot the trends.
+4. In manual mode click `Demand 40 m³/h` — `Manual demand` row updates, node badge appends `Qd=40 m³/h`.
+5. Inspect the **Raw output** table at the bottom of the page for the full Port 0 surface (basin geometry, dryRunLevel, highVolumeSafetyLevel, predictedOverflowVolume, …).
+
+> [!IMPORTANT]
+> **GIF needed.** Capture clicking through Mode → Inflow → Demand and the charts reacting. 20–30 s is enough.
+>
+> Save as `wiki/_partial-gifs/pumpingStation/02-ex02-dashboard.gif`.
+> Replace this callout with the image link.
+
+---
+
+## Docker compose snippet
+
+To bring up Node-RED + InfluxDB with EVOLV nodes pre-loaded:
+
+```yaml
+# docker-compose.yml (extract)
+services:
+  nodered:
+    build: ./docker/nodered
+    ports: ['1880:1880']
+    volumes:
+      - ./docker/nodered/data:/data/evolv
+  influxdb:
+    image: influxdb:2.7
+    ports: ['8086:8086']
+```
+
+Full file: [EVOLV/docker-compose.yml](https://gitea.wbd-rd.nl/RnD/EVOLV/src/branch/development/docker-compose.yml).
+
+---
+
+## Debug recipes
+
+| Symptom | First thing to check |
+|:---|:---|
+| Status badge stuck on `no data` | Did the level `measurement` child register? Tap Port 2 of the measurement with a `debug` node and confirm a `child.register` msg fires once at init. |
+| Level rises but `volume` stays at `minVol` | Volume integrator hasn't been calibrated. Send `cmd.calibrate.level = <real level>` once. |
+| Demand stays at 0 % even though level is high | Mode might be `manual` &mdash; check `set.mode`. Or the safety layer is blocking (look at `safety.blocked` on Port 0). |
+| Predicted volume drifts | Net-flow source is wrong. Look at `flowSource` on Port 0; it should match the highest-level aggregator you have wired in. |
+| `enableLog: 'debug'` floods the container log | Toggle it off in the node's config. Never ship a demo with debug logging enabled. |
+
+---
+
+## Related pages
+
+| Page | Why |
+|:---|:---|
+| [Home](Home) | Intuitive overview |
+| [Reference &mdash; Contracts](Reference-Contracts) | Topic + config + child filters |
+| [Reference &mdash; Architecture](Reference-Architecture) | Code map, state chart, lifecycle |
+| [Reference &mdash; Limitations](Reference-Limitations) | Known limitations and open questions |
+| [EVOLV &mdash; Topology Patterns](https://gitea.wbd-rd.nl/RnD/EVOLV/wiki/Topology-Patterns) | Where this node fits in a larger plant |

wiki/Reference-Limitations.md

@@ -0,0 +1,104 @@
+# Reference — Limitations
+
+![code-ref](https://img.shields.io/badge/code--ref-b825ac1-blue)
+
+> [!NOTE]
+> What `pumpingStation` does not do, current rough edges, and open questions tracked against the refactor. Live source for the open items: `.claude/refactor/OPEN_QUESTIONS.md` in the EVOLV superproject.
+
+---
+
+## When you would not use this node
+
+| Scenario | Use instead |
+|:---|:---|
+| Pressurised distribution network without a basin | Cascade pumpingStations, or a `valveGroupControl` parented to a flow source |
+| Single pump, no basin, no level sensor | Parent a `rotatingMachine` directly under a UI driver |
+| Air manifold (compressor + valves) | A future `compressorStation` — not implemented |
+| Open-channel flow without a wet-well | Out of scope for the current basin model (rectangular prismatic only) |
+| Sludge thickening basin | Use a `settler` — different settling-velocity model required |
+
+---
+
+## Known limitations
+
+### Implemented modes vs schema modes
+
+The schema's `control.mode` enum lists eight modes, but only two are implemented in code:
+
+| Mode | Status | Notes |
+|:---|:---|:---|
+| `levelbased` | Implemented | Default; the most production-tested path |
+| `manual` | Implemented | Operator's `set.demand` is forwarded unchanged |
+| `flowbased` | Placeholder | Schema accepts it; runtime falls back to levelbased |
+| `pressureBased` | Placeholder | Same as above |
+| `percentageBased` | Placeholder | Same as above |
+| `powerBased` | Placeholder | Same as above |
+| `hybrid` | Placeholder | Same as above |
+| `mpc` | Not in code | Reserved name |
+
+If you select an unimplemented mode in the editor, the basin runs but the controller stays in level-based. Tracked.
+
+### Basin shape
+
+Only rectangular prismatic basins are supported. Cylindrical, frusto-conical, or stepped basins would need a new `BasinGeometry` implementation. The `volume = level * surfaceArea` relationship is hard-wired.
+
+### Net-flow source selection
+
+When both an MGC parent and direct rotatingMachine children are wired, the station subscribes only to the MGC's predicted flow. If you intentionally have MGC + extra individual pumps, the extras are invisible to the volume integrator. The router protects against double-counting but does not warn about this edge case.
+
+### Aliases not yet removed
+
+The following legacy aliases still work but log a deprecation warning on first use. They are scheduled for removal in Phase 7:
+
+| Canonical | Legacy alias |
+|:---|:---|
+| `set.mode` | `changemode` |
+| `set.inflow` | `q_in` |
+| `set.outflow` | `q_out` |
+| `set.demand` | `Qd` |
+| `cmd.calibrate.volume` | `calibratePredictedVolume` |
+| `cmd.calibrate.level` | `calibratePredictedLevel` |
+| `child.register` | `registerChild` |
+
+Update integrations now.
+
+---
+
+## Open questions (tracked)
+
+Pulled from `.claude/refactor/OPEN_QUESTIONS.md`. Last reviewed on the date in the badge above.
+
+| Question | Where it lives |
+|:---|:---|
+| `overfillVol` alias drop — same shape as the already-done `overfillLevel` drop | OPEN_QUESTIONS.md (pumpingStation entry) |
+| Net-flow source warning when multiple aggregators are wired | Internal — not yet ticketed |
+| Cylindrical basin geometry | Internal — not yet ticketed |
+| Docker E2E sign-off (P2.14) | OPEN_QUESTIONS.md (Phase 6) |
+
+---
+
+## Migration notes
+
+### From pre-refactor
+
+| Pre-refactor | Now |
+|:---|:---|
+| `enableOverfillProtection` | `enableHighVolumeSafety` |
+| `overfillThresholdPercent` | `highVolumeSafetyThresholdPercent` |
+| Legacy topics (`changemode`, `q_in`, ...) | Canonical topics (see [Reference — Contracts](Reference-Contracts) for the alias map) |
+| `basic.flow.json` (legacy) | `01-Basic.json` (canonical-topic version) |
+
+### Renamed safety thresholds
+
+The safety layer used to expose threshold fields named `overfill*`. Those names suggested the layer prevents overflow specifically; in practice the rule handles high-volume conditions more broadly (high level + low inflow / outflow imbalance). The current names (`highVolumeSafety*`) reflect that.
+
+---
+
+## Related pages
+
+| Page | Why |
+|:---|:---|
+| [Home](Home) | Intuitive overview |
+| [Reference — Contracts](Reference-Contracts) | Topic + config + child filters (alias map at the end) |
+| [Reference — Architecture](Reference-Architecture) | Code map, state chart |
+| [Reference — Examples](Reference-Examples) | Shipped flows |

wiki/_Sidebar.md

@@ -0,0 +1,17 @@
+### pumpingStation
+
+- [Home](Home)
+
+**Reference**
+
+- [Contracts](Reference-Contracts)
+- [Architecture](Reference-Architecture)
+- [Examples](Reference-Examples)
+- [Limitations](Reference-Limitations)
+
+**Related**
+
+- [EVOLV master wiki](https://gitea.wbd-rd.nl/RnD/EVOLV/wiki/Home)
+- [Topology Patterns](https://gitea.wbd-rd.nl/RnD/EVOLV/wiki/Topology-Patterns)
+- [Topic Conventions](https://gitea.wbd-rd.nl/RnD/EVOLV/wiki/Topic-Conventions)
+- [Telemetry](https://gitea.wbd-rd.nl/RnD/EVOLV/wiki/Telemetry)

wiki/_partial-flows/pumpingStation/.gitkeep

@@ -0,0 +1,2 @@
+# Downloadable example flow JSONs.
+# Canonical examples live under nodes/pumpingStation/examples/.

wiki/_partial-gifs/pumpingStation/.gitkeep

@@ -0,0 +1,4 @@
+# Dashboard interaction GIFs for pumpingStation.
+# Naming: NN-short-description.gif
+# Optimise with: gifsicle -O3 --lossy=80 in.gif -o out.gif
+# Target <= 1 MB.

wiki/_partial-screenshots/pumpingStation/.gitkeep

@@ -0,0 +1,3 @@
+# Node-RED editor screenshots for pumpingStation.
+# Naming: NN-short-description.png
+# See Home.md callouts.

wiki/diagrams/README.md

@@ -0,0 +1,72 @@
+# Diagrams
+
+Editable source diagrams for the pumpingStation wiki. The current diagrams are **`.drawio.svg` files with the draw.io source embedded**, so anyone can edit the SVG directly in [draw.io](https://app.diagrams.net/) without touching any Markdown.
+
+## File roles
+
+| File | Role |
+|---|---|
+| `<name>.drawio` | Optional native draw.io XML source, if a diagram also keeps a standalone source file. |
+| `<name>.drawio.svg` | SVG export of the same diagram (with source embedded). What the wiki actually renders, and what round-trips back into draw.io. |
+
+An optional standalone `.drawio` file can be committed beside the SVG, but the embedded-source SVG is enough for the wiki to render and for the next editor to pick up from exactly where the last one left off.
+
+## Editing workflow
+
+1. **Clone** the repo (you likely already have it if you're editing):
+   ```bash
+   git clone https://gitea.wbd-rd.nl/RnD/pumpingStation.git
+   cd pumpingStation/wiki/diagrams
+   ```
+2. **Open** the `.drawio.svg` file in draw.io:
+   - Web: [app.diagrams.net](https://app.diagrams.net/) → *Open Existing Diagram*, or drag-and-drop.
+   - Desktop: [drawio-desktop](https://github.com/jgraph/drawio-desktop/releases).
+3. **Edit** — move shapes, change labels, adjust layout.
+4. **Export** to SVG with the source embedded:
+   - `File → Export as → SVG…`
+   - Check **Include a copy of my diagram** ← this is what lets future edits round-trip through the SVG.
+   - Save next to the source as `<name>.drawio.svg` (overwrite).
+5. **Commit & push** the edited SVG, plus the `.drawio` file if one exists:
+   ```bash
+   git add wiki/diagrams/<name>.drawio.svg
+   git commit -m "Update <name>: <what changed>"
+   git push
+   ```
+
+## Referencing a diagram from a wiki page
+
+In any Markdown page under `wiki/`:
+
+```markdown
+![Basin model](diagrams/basin-model.drawio.svg)
+```
+
+Use a descriptive `alt` text; it's the fallback if the SVG fails and it shows up in exports.
+
+## Naming
+
+- kebab-case, one concept per diagram.
+- Current diagrams:
+
+| Diagram | Shows |
+|---|---|
+| `basin-model` | Shared physical basin cross-section — walls, pipe reference heights, derived safety zones, storage/dead volumes |
+| `modes/level-based/basin-mode-level-linear` | Level-based linear control curve — rising ramp starts at inlet level, falling ramp shifts to `startLevel` |
+| `modes/level-based/basin-mode-level-log` | Level-based logarithmic control curve — fast early response, falling ramp shifts to `startLevel` |
+| `control-zones` | Legacy vertical level axis ("thermometer") for `levelbased` mode — STOP / DEAD ZONE / RUN with demand ramp |
+| `safety-rules` | Dry-run vs high-volume safety rule asymmetry — which children stop, which keep running |
+
+## Making a brand-new diagram
+
+1. Open draw.io, start blank.
+2. Draw it.
+3. `File → Export as → SVG…` with **Include a copy of my diagram** checked → save as `wiki/diagrams/<name>.drawio.svg`.
+4. Reference from the wiki page with `![alt](diagrams/<name>.drawio.svg)`.
+5. Add an entry to the table above.
+6. Commit the new `.drawio.svg` and updated `.md` together.
+
+## These starters are rough
+
+Some diagrams are still rough — layout is approximate, colors and fonts may be defaults, and alignment may need refinement. They're meant to be improved in draw.io as the model settles.
+
+Open the `.drawio.svg` in draw.io and it will load the editable model. The SVG has the draw.io XML embedded in a `content="…"` attribute on the root `<svg>` element — that's what lets draw.io re-open its own SVG exports.

wiki/diagrams/control-zones.drawio.svg

@@ -0,0 +1,162 @@
+<?xml version="1.0" encoding="UTF-8" standalone="no"?>
+<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 700 660" font-family="Arial, sans-serif" font-size="13" content="&lt;mxfile host=&quot;app.diagrams.net&quot; modified=&quot;2026-04-22T12:00:00.000Z&quot; agent=&quot;Claude Code placeholder&quot; etag=&quot;initial&quot; version=&quot;22.0.0&quot; type=&quot;device&quot;&gt;
+  &lt;diagram name=&quot;control-zones&quot; id=&quot;controlZones&quot;&gt;
+    &lt;mxGraphModel dx=&quot;1000&quot; dy=&quot;800&quot; grid=&quot;1&quot; gridSize=&quot;10&quot; guides=&quot;1&quot; tooltips=&quot;1&quot; connect=&quot;1&quot; arrows=&quot;1&quot; fold=&quot;1&quot; page=&quot;1&quot; pageScale=&quot;1&quot; pageWidth=&quot;700&quot; pageHeight=&quot;800&quot; math=&quot;0&quot; shadow=&quot;0&quot;&gt;
+      &lt;root&gt;
+        &lt;mxCell id=&quot;0&quot; /&gt;
+        &lt;mxCell id=&quot;1&quot; parent=&quot;0&quot; /&gt;
+        &lt;mxCell id=&quot;title&quot; value=&quot;levelbased mode — three zones&quot; style=&quot;text;html=1;fontSize=16;fontStyle=1;align=center;&quot; vertex=&quot;1&quot; parent=&quot;1&quot;&gt;
+          &lt;mxGeometry x=&quot;100&quot; y=&quot;20&quot; width=&quot;500&quot; height=&quot;30&quot; as=&quot;geometry&quot; /&gt;
+        &lt;/mxCell&gt;
+        &lt;mxCell id=&quot;axis&quot; value=&quot;&quot; style=&quot;endArrow=classic;html=1;strokeColor=#000;strokeWidth=2;&quot; edge=&quot;1&quot; parent=&quot;1&quot;&gt;
+          &lt;mxGeometry relative=&quot;1&quot; as=&quot;geometry&quot;&gt;
+            &lt;mxPoint x=&quot;280&quot; y=&quot;600&quot; as=&quot;sourcePoint&quot; /&gt;
+            &lt;mxPoint x=&quot;280&quot; y=&quot;80&quot; as=&quot;targetPoint&quot; /&gt;
+          &lt;/mxGeometry&gt;
+        &lt;/mxCell&gt;
+        &lt;mxCell id=&quot;axis_label&quot; value=&quot;level&quot; style=&quot;text;html=1;fontSize=13;fontStyle=1;align=left;&quot; vertex=&quot;1&quot; parent=&quot;1&quot;&gt;
+          &lt;mxGeometry x=&quot;240&quot; y=&quot;60&quot; width=&quot;50&quot; height=&quot;20&quot; as=&quot;geometry&quot; /&gt;
+        &lt;/mxCell&gt;
+
+        &lt;mxCell id=&quot;overflow&quot; value=&quot;heightOverflow — weir crest (spill → measure)&quot; style=&quot;text;html=1;fontSize=12;align=left;fontColor=#B22222;&quot; vertex=&quot;1&quot; parent=&quot;1&quot;&gt;
+          &lt;mxGeometry x=&quot;300&quot; y=&quot;130&quot; width=&quot;380&quot; height=&quot;20&quot; as=&quot;geometry&quot; /&gt;
+        &lt;/mxCell&gt;
+        &lt;mxCell id=&quot;overflow_tick&quot; value=&quot;&quot; style=&quot;endArrow=none;html=1;strokeColor=#B22222;&quot; edge=&quot;1&quot; parent=&quot;1&quot;&gt;
+          &lt;mxGeometry relative=&quot;1&quot; as=&quot;geometry&quot;&gt;
+            &lt;mxPoint x=&quot;270&quot; y=&quot;140&quot; as=&quot;sourcePoint&quot; /&gt;
+            &lt;mxPoint x=&quot;290&quot; y=&quot;140&quot; as=&quot;targetPoint&quot; /&gt;
+          &lt;/mxGeometry&gt;
+        &lt;/mxCell&gt;
+
+        &lt;mxCell id=&quot;run_band&quot; value=&quot;RUN  — linear 0 → 100 %&quot; style=&quot;rounded=0;whiteSpace=wrap;html=1;fillColor=#E8F5E9;strokeColor=#1E8449;fontSize=12;&quot; vertex=&quot;1&quot; parent=&quot;1&quot;&gt;
+          &lt;mxGeometry x=&quot;300&quot; y=&quot;160&quot; width=&quot;220&quot; height=&quot;110&quot; as=&quot;geometry&quot; /&gt;
+        &lt;/mxCell&gt;
+
+        &lt;mxCell id=&quot;maxflow&quot; value=&quot;maxFlowLevel — 100 % demand&quot; style=&quot;text;html=1;fontSize=12;align=left;fontColor=#D68910;fontStyle=1;&quot; vertex=&quot;1&quot; parent=&quot;1&quot;&gt;
+          &lt;mxGeometry x=&quot;300&quot; y=&quot;265&quot; width=&quot;300&quot; height=&quot;20&quot; as=&quot;geometry&quot; /&gt;
+        &lt;/mxCell&gt;
+        &lt;mxCell id=&quot;maxflow_tick&quot; value=&quot;&quot; style=&quot;endArrow=none;html=1;strokeColor=#D68910;strokeWidth=2;&quot; edge=&quot;1&quot; parent=&quot;1&quot;&gt;
+          &lt;mxGeometry relative=&quot;1&quot; as=&quot;geometry&quot;&gt;
+            &lt;mxPoint x=&quot;265&quot; y=&quot;275&quot; as=&quot;sourcePoint&quot; /&gt;
+            &lt;mxPoint x=&quot;295&quot; y=&quot;275&quot; as=&quot;targetPoint&quot; /&gt;
+          &lt;/mxGeometry&gt;
+        &lt;/mxCell&gt;
+
+        &lt;mxCell id=&quot;ramp_label&quot; value=&quot;(ramp — demand scales linearly with level)&quot; style=&quot;text;html=1;fontSize=11;align=left;fontStyle=2;&quot; vertex=&quot;1&quot; parent=&quot;1&quot;&gt;
+          &lt;mxGeometry x=&quot;300&quot; y=&quot;300&quot; width=&quot;320&quot; height=&quot;20&quot; as=&quot;geometry&quot; /&gt;
+        &lt;/mxCell&gt;
+
+        &lt;mxCell id=&quot;startlevel&quot; value=&quot;startLevel — 0 % demand (ramp starts)&quot; style=&quot;text;html=1;fontSize=12;align=left;fontColor=#1E8449;fontStyle=1;&quot; vertex=&quot;1&quot; parent=&quot;1&quot;&gt;
+          &lt;mxGeometry x=&quot;300&quot; y=&quot;335&quot; width=&quot;340&quot; height=&quot;20&quot; as=&quot;geometry&quot; /&gt;
+        &lt;/mxCell&gt;
+        &lt;mxCell id=&quot;start_tick&quot; value=&quot;&quot; style=&quot;endArrow=none;html=1;strokeColor=#1E8449;strokeWidth=2;&quot; edge=&quot;1&quot; parent=&quot;1&quot;&gt;
+          &lt;mxGeometry relative=&quot;1&quot; as=&quot;geometry&quot;&gt;
+            &lt;mxPoint x=&quot;265&quot; y=&quot;345&quot; as=&quot;sourcePoint&quot; /&gt;
+            &lt;mxPoint x=&quot;295&quot; y=&quot;345&quot; as=&quot;targetPoint&quot; /&gt;
+          &lt;/mxGeometry&gt;
+        &lt;/mxCell&gt;
+
+        &lt;mxCell id=&quot;dead_band&quot; value=&quot;DEAD ZONE — hysteresis, keep last cmd&quot; style=&quot;rounded=0;whiteSpace=wrap;html=1;fillColor=#FFF8E1;strokeColor=#F57C00;fontSize=12;&quot; vertex=&quot;1&quot; parent=&quot;1&quot;&gt;
+          &lt;mxGeometry x=&quot;300&quot; y=&quot;360&quot; width=&quot;220&quot; height=&quot;80&quot; as=&quot;geometry&quot; /&gt;
+        &lt;/mxCell&gt;
+
+        &lt;mxCell id=&quot;inlet&quot; value=&quot;heightInlet — inflow pipe&quot; style=&quot;text;html=1;fontSize=12;align=left;fontColor=#1F4E79;&quot; vertex=&quot;1&quot; parent=&quot;1&quot;&gt;
+          &lt;mxGeometry x=&quot;300&quot; y=&quot;395&quot; width=&quot;300&quot; height=&quot;20&quot; as=&quot;geometry&quot; /&gt;
+        &lt;/mxCell&gt;
+        &lt;mxCell id=&quot;inlet_tick&quot; value=&quot;&quot; style=&quot;endArrow=none;html=1;strokeColor=#1F4E79;&quot; edge=&quot;1&quot; parent=&quot;1&quot;&gt;
+          &lt;mxGeometry relative=&quot;1&quot; as=&quot;geometry&quot;&gt;
+            &lt;mxPoint x=&quot;270&quot; y=&quot;405&quot; as=&quot;sourcePoint&quot; /&gt;
+            &lt;mxPoint x=&quot;290&quot; y=&quot;405&quot; as=&quot;targetPoint&quot; /&gt;
+          &lt;/mxGeometry&gt;
+        &lt;/mxCell&gt;
+
+        &lt;mxCell id=&quot;stoplevel&quot; value=&quot;stopLevel — unconditional STOP&quot; style=&quot;text;html=1;fontSize=12;align=left;fontColor=#6C3483;fontStyle=1;&quot; vertex=&quot;1&quot; parent=&quot;1&quot;&gt;
+          &lt;mxGeometry x=&quot;300&quot; y=&quot;440&quot; width=&quot;300&quot; height=&quot;20&quot; as=&quot;geometry&quot; /&gt;
+        &lt;/mxCell&gt;
+        &lt;mxCell id=&quot;stop_tick&quot; value=&quot;&quot; style=&quot;endArrow=none;html=1;strokeColor=#6C3483;strokeWidth=2;&quot; edge=&quot;1&quot; parent=&quot;1&quot;&gt;
+          &lt;mxGeometry relative=&quot;1&quot; as=&quot;geometry&quot;&gt;
+            &lt;mxPoint x=&quot;265&quot; y=&quot;450&quot; as=&quot;sourcePoint&quot; /&gt;
+            &lt;mxPoint x=&quot;295&quot; y=&quot;450&quot; as=&quot;targetPoint&quot; /&gt;
+          &lt;/mxGeometry&gt;
+        &lt;/mxCell&gt;
+
+        &lt;mxCell id=&quot;stop_band&quot; value=&quot;pumps OFF (MGC shutdown)&quot; style=&quot;rounded=0;whiteSpace=wrap;html=1;fillColor=#F4ECF7;strokeColor=#6C3483;fontSize=12;&quot; vertex=&quot;1&quot; parent=&quot;1&quot;&gt;
+          &lt;mxGeometry x=&quot;300&quot; y=&quot;465&quot; width=&quot;220&quot; height=&quot;80&quot; as=&quot;geometry&quot; /&gt;
+        &lt;/mxCell&gt;
+
+        &lt;mxCell id=&quot;outlet&quot; value=&quot;heightOutlet — outflow pipe (dry-run trip here)&quot; style=&quot;text;html=1;fontSize=12;align=left;fontColor=#B22222;&quot; vertex=&quot;1&quot; parent=&quot;1&quot;&gt;
+          &lt;mxGeometry x=&quot;300&quot; y=&quot;510&quot; width=&quot;360&quot; height=&quot;20&quot; as=&quot;geometry&quot; /&gt;
+        &lt;/mxCell&gt;
+        &lt;mxCell id=&quot;outlet_tick&quot; value=&quot;&quot; style=&quot;endArrow=none;html=1;strokeColor=#B22222;&quot; edge=&quot;1&quot; parent=&quot;1&quot;&gt;
+          &lt;mxGeometry relative=&quot;1&quot; as=&quot;geometry&quot;&gt;
+            &lt;mxPoint x=&quot;270&quot; y=&quot;520&quot; as=&quot;sourcePoint&quot; /&gt;
+            &lt;mxPoint x=&quot;290&quot; y=&quot;520&quot; as=&quot;targetPoint&quot; /&gt;
+          &lt;/mxGeometry&gt;
+        &lt;/mxCell&gt;
+
+        &lt;mxCell id=&quot;floor&quot; value=&quot;0 (floor)&quot; style=&quot;text;html=1;fontSize=11;align=left;&quot; vertex=&quot;1&quot; parent=&quot;1&quot;&gt;
+          &lt;mxGeometry x=&quot;300&quot; y=&quot;580&quot; width=&quot;60&quot; height=&quot;20&quot; as=&quot;geometry&quot; /&gt;
+        &lt;/mxCell&gt;
+      &lt;/root&gt;
+    &lt;/mxGraphModel&gt;
+  &lt;/diagram&gt;
+&lt;/mxfile&gt;">
+  <title>levelbased mode — three zones</title>
+  <defs>
+    <marker id="arr" viewBox="0 0 10 10" refX="9" refY="5" markerWidth="8" markerHeight="8" orient="auto-start-reverse">
+      <path d="M 0 0 L 10 5 L 0 10 z" fill="#000" />
+    </marker>
+  </defs>
+
+  <text x="350" y="30" text-anchor="middle" font-weight="bold" font-size="16">levelbased mode — three zones</text>
+
+  <!-- Vertical level axis -->
+  <line x1="280" y1="600" x2="280" y2="80" stroke="#000" stroke-width="2" marker-end="url(#arr)" />
+  <text x="260" y="75" text-anchor="end" font-weight="bold" font-size="13">level</text>
+
+  <!-- heightOverflow -->
+  <line x1="270" y1="140" x2="290" y2="140" stroke="#B22222" stroke-width="2" />
+  <text x="300" y="144" fill="#B22222" font-size="12">heightOverflow  —  weir crest (spill → measure)</text>
+
+  <!-- RUN band -->
+  <rect x="300" y="160" width="240" height="110" fill="#E8F5E9" stroke="#1E8449" />
+  <text x="420" y="220" text-anchor="middle" font-size="13" fill="#1E8449" font-weight="bold">RUN</text>
+  <text x="420" y="238" text-anchor="middle" font-size="12" fill="#1E8449">linear 0 → 100 %</text>
+
+  <!-- maxFlowLevel -->
+  <line x1="265" y1="275" x2="295" y2="275" stroke="#D68910" stroke-width="3" />
+  <text x="305" y="279" fill="#D68910" font-size="12" font-weight="bold">maxFlowLevel  —  100 % demand</text>
+
+  <!-- Ramp label -->
+  <text x="305" y="314" font-size="11" font-style="italic">(ramp — demand scales linearly with level)</text>
+
+  <!-- startLevel -->
+  <line x1="265" y1="345" x2="295" y2="345" stroke="#1E8449" stroke-width="3" />
+  <text x="305" y="349" fill="#1E8449" font-size="12" font-weight="bold">startLevel  —  0 % demand (ramp starts)</text>
+
+  <!-- DEAD ZONE band -->
+  <rect x="300" y="360" width="240" height="80" fill="#FFF8E1" stroke="#F57C00" />
+  <text x="420" y="390" text-anchor="middle" font-size="13" fill="#B78200" font-weight="bold">DEAD ZONE</text>
+  <text x="420" y="408" text-anchor="middle" font-size="12" fill="#B78200">hysteresis — keep last cmd</text>
+
+  <!-- heightInlet (inside dead zone) -->
+  <line x1="270" y1="405" x2="290" y2="405" stroke="#1F4E79" stroke-width="2" />
+  <text x="550" y="409" fill="#1F4E79" font-size="12">heightInlet</text>
+
+  <!-- stopLevel -->
+  <line x1="265" y1="450" x2="295" y2="450" stroke="#6C3483" stroke-width="3" />
+  <text x="305" y="454" fill="#6C3483" font-size="12" font-weight="bold">stopLevel  —  unconditional STOP</text>
+
+  <!-- STOP band -->
+  <rect x="300" y="465" width="240" height="80" fill="#F4ECF7" stroke="#6C3483" />
+  <text x="420" y="500" text-anchor="middle" font-size="13" fill="#6C3483" font-weight="bold">pumps OFF</text>
+  <text x="420" y="518" text-anchor="middle" font-size="12" fill="#6C3483">(MGC shutdown)</text>
+
+  <!-- heightOutlet -->
+  <line x1="270" y1="540" x2="290" y2="540" stroke="#B22222" stroke-width="2" />
+  <text x="305" y="544" fill="#B22222" font-size="12">heightOutlet  —  outflow pipe (dry-run trip)</text>
+
+  <!-- floor -->
+  <line x1="265" y1="600" x2="295" y2="600" stroke="#000" stroke-width="2" />
+  <text x="305" y="604" font-size="11">0 (floor)</text>
+</svg>

wiki/diagrams/safety-rules.drawio.svg

@@ -0,0 +1,99 @@
+<?xml version="1.0" encoding="UTF-8" standalone="no"?>
+<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 900 620" font-family="Arial, sans-serif" font-size="13" content="&lt;mxfile host=&quot;app.diagrams.net&quot; modified=&quot;2026-04-22T12:00:00.000Z&quot; agent=&quot;Claude Code placeholder&quot; etag=&quot;initial&quot; version=&quot;22.0.0&quot; type=&quot;device&quot;&gt;
+  &lt;diagram name=&quot;safety-rules&quot; id=&quot;safetyRules&quot;&gt;
+    &lt;mxGraphModel dx=&quot;1200&quot; dy=&quot;700&quot; grid=&quot;1&quot; gridSize=&quot;10&quot; guides=&quot;1&quot; tooltips=&quot;1&quot; connect=&quot;1&quot; arrows=&quot;1&quot; fold=&quot;1&quot; page=&quot;1&quot; pageScale=&quot;1&quot; pageWidth=&quot;900&quot; pageHeight=&quot;700&quot; math=&quot;0&quot; shadow=&quot;0&quot;&gt;
+      &lt;root&gt;
+        &lt;mxCell id=&quot;0&quot; /&gt;
+        &lt;mxCell id=&quot;1&quot; parent=&quot;0&quot; /&gt;
+        &lt;mxCell id=&quot;title&quot; value=&quot;Safety rules — asymmetric by direction&quot; style=&quot;text;html=1;fontSize=16;fontStyle=1;align=center;&quot; vertex=&quot;1&quot; parent=&quot;1&quot;&gt;
+          &lt;mxGeometry x=&quot;150&quot; y=&quot;20&quot; width=&quot;600&quot; height=&quot;30&quot; as=&quot;geometry&quot; /&gt;
+        &lt;/mxCell&gt;
+
+        &lt;mxCell id=&quot;dryrun_box&quot; value=&quot;DRY-RUN&amp;#10;(direction = draining)&quot; style=&quot;rounded=0;whiteSpace=wrap;html=1;fillColor=#FFF3E0;strokeColor=#E65100;strokeWidth=2;fontSize=14;fontStyle=1;verticalAlign=top;&quot; vertex=&quot;1&quot; parent=&quot;1&quot;&gt;
+          &lt;mxGeometry x=&quot;80&quot; y=&quot;80&quot; width=&quot;340&quot; height=&quot;340&quot; as=&quot;geometry&quot; /&gt;
+        &lt;/mxCell&gt;
+        &lt;mxCell id=&quot;dr_upstream&quot; value=&quot;upstream children  —  KEEP&quot; style=&quot;text;html=1;fontSize=13;align=left;&quot; vertex=&quot;1&quot; parent=&quot;1&quot;&gt;
+          &lt;mxGeometry x=&quot;100&quot; y=&quot;140&quot; width=&quot;300&quot; height=&quot;24&quot; as=&quot;geometry&quot; /&gt;
+        &lt;/mxCell&gt;
+        &lt;mxCell id=&quot;dr_downstream&quot; value=&quot;downstream children  —  STOP&quot; style=&quot;text;html=1;fontSize=13;align=left;fontStyle=1;fontColor=#E65100;&quot; vertex=&quot;1&quot; parent=&quot;1&quot;&gt;
+          &lt;mxGeometry x=&quot;100&quot; y=&quot;170&quot; width=&quot;300&quot; height=&quot;24&quot; as=&quot;geometry&quot; /&gt;
+        &lt;/mxCell&gt;
+        &lt;mxCell id=&quot;dr_machinegroups&quot; value=&quot;machineGroups  —  STOP&quot; style=&quot;text;html=1;fontSize=13;align=left;fontStyle=1;fontColor=#E65100;&quot; vertex=&quot;1&quot; parent=&quot;1&quot;&gt;
+          &lt;mxGeometry x=&quot;100&quot; y=&quot;200&quot; width=&quot;300&quot; height=&quot;24&quot; as=&quot;geometry&quot; /&gt;
+        &lt;/mxCell&gt;
+        &lt;mxCell id=&quot;dr_control&quot; value=&quot;control loop  —  BLOCKED&quot; style=&quot;text;html=1;fontSize=13;align=left;fontStyle=1;fontColor=#E65100;&quot; vertex=&quot;1&quot; parent=&quot;1&quot;&gt;
+          &lt;mxGeometry x=&quot;100&quot; y=&quot;230&quot; width=&quot;300&quot; height=&quot;24&quot; as=&quot;geometry&quot; /&gt;
+        &lt;/mxCell&gt;
+        &lt;mxCell id=&quot;dr_note&quot; value=&quot;safetyControllerActive = true&amp;#10;&amp;#10;Pumps must stop before sucking air.&quot; style=&quot;text;html=1;fontSize=12;align=left;fontStyle=2;&quot; vertex=&quot;1&quot; parent=&quot;1&quot;&gt;
+          &lt;mxGeometry x=&quot;100&quot; y=&quot;290&quot; width=&quot;300&quot; height=&quot;80&quot; as=&quot;geometry&quot; /&gt;
+        &lt;/mxCell&gt;
+
+        &lt;mxCell id=&quot;overfill_box&quot; value=&quot;OVERFILL&amp;#10;(direction = filling)&quot; style=&quot;rounded=0;whiteSpace=wrap;html=1;fillColor=#FFEBEE;strokeColor=#C62828;strokeWidth=2;fontSize=14;fontStyle=1;verticalAlign=top;&quot; vertex=&quot;1&quot; parent=&quot;1&quot;&gt;
+          &lt;mxGeometry x=&quot;480&quot; y=&quot;80&quot; width=&quot;340&quot; height=&quot;340&quot; as=&quot;geometry&quot; /&gt;
+        &lt;/mxCell&gt;
+        &lt;mxCell id=&quot;of_upstream&quot; value=&quot;upstream children  —  STOP  ⚠&quot; style=&quot;text;html=1;fontSize=13;align=left;fontStyle=1;fontColor=#C62828;&quot; vertex=&quot;1&quot; parent=&quot;1&quot;&gt;
+          &lt;mxGeometry x=&quot;500&quot; y=&quot;140&quot; width=&quot;300&quot; height=&quot;24&quot; as=&quot;geometry&quot; /&gt;
+        &lt;/mxCell&gt;
+        &lt;mxCell id=&quot;of_downstream&quot; value=&quot;downstream children  —  KEEP&quot; style=&quot;text;html=1;fontSize=13;align=left;&quot; vertex=&quot;1&quot; parent=&quot;1&quot;&gt;
+          &lt;mxGeometry x=&quot;500&quot; y=&quot;170&quot; width=&quot;300&quot; height=&quot;24&quot; as=&quot;geometry&quot; /&gt;
+        &lt;/mxCell&gt;
+        &lt;mxCell id=&quot;of_machinegroups&quot; value=&quot;machineGroups  —  KEEP&quot; style=&quot;text;html=1;fontSize=13;align=left;&quot; vertex=&quot;1&quot; parent=&quot;1&quot;&gt;
+          &lt;mxGeometry x=&quot;500&quot; y=&quot;200&quot; width=&quot;300&quot; height=&quot;24&quot; as=&quot;geometry&quot; /&gt;
+        &lt;/mxCell&gt;
+        &lt;mxCell id=&quot;of_control&quot; value=&quot;control loop  —  ACTIVE&quot; style=&quot;text;html=1;fontSize=13;align=left;&quot; vertex=&quot;1&quot; parent=&quot;1&quot;&gt;
+          &lt;mxGeometry x=&quot;500&quot; y=&quot;230&quot; width=&quot;300&quot; height=&quot;24&quot; as=&quot;geometry&quot; /&gt;
+        &lt;/mxCell&gt;
+        &lt;mxCell id=&quot;of_note&quot; value=&quot;Level control keeps commanding downstream MGC.&amp;#10;&amp;#10;⚠ &amp;quot;upstream STOP&amp;quot; is only correct in a cascaded layout. In a gravity-sewer station the inflow can&amp;apos;t be stopped — log the spill instead.&quot; style=&quot;text;html=1;fontSize=12;align=left;fontStyle=2;&quot; vertex=&quot;1&quot; parent=&quot;1&quot;&gt;
+          &lt;mxGeometry x=&quot;500&quot; y=&quot;290&quot; width=&quot;300&quot; height=&quot;120&quot; as=&quot;geometry&quot; /&gt;
+        &lt;/mxCell&gt;
+
+        &lt;mxCell id=&quot;trigger_title&quot; value=&quot;Triggers (either condition fires the rule):&quot; style=&quot;text;html=1;fontSize=13;fontStyle=1;align=left;&quot; vertex=&quot;1&quot; parent=&quot;1&quot;&gt;
+          &lt;mxGeometry x=&quot;80&quot; y=&quot;450&quot; width=&quot;740&quot; height=&quot;20&quot; as=&quot;geometry&quot; /&gt;
+        &lt;/mxCell&gt;
+        &lt;mxCell id=&quot;trigger_list&quot; value=&quot;• vol &amp;lt; triggerLowVol     (triggerLowVol  = minVol × (1 + pct/100))&amp;#10;• vol &amp;gt; triggerHighVol    (triggerHighVol = maxVolOverflow × pct/100)&amp;#10;• remainingTime &amp;lt; timeleftToFullOrEmptyThresholdSeconds (if enabled)&quot; style=&quot;text;html=1;fontSize=12;align=left;&quot; vertex=&quot;1&quot; parent=&quot;1&quot;&gt;
+          &lt;mxGeometry x=&quot;80&quot; y=&quot;480&quot; width=&quot;740&quot; height=&quot;80&quot; as=&quot;geometry&quot; /&gt;
+        &lt;/mxCell&gt;
+      &lt;/root&gt;
+    &lt;/mxGraphModel&gt;
+  &lt;/diagram&gt;
+&lt;/mxfile&gt;">
+  <title>Safety rules — asymmetric by direction</title>
+
+  <text x="450" y="30" text-anchor="middle" font-weight="bold" font-size="16">Safety rules — asymmetric by direction</text>
+
+  <!-- DRY-RUN box -->
+  <rect x="80" y="80" width="340" height="340" fill="#FFF3E0" stroke="#E65100" stroke-width="2" />
+  <text x="250" y="112" text-anchor="middle" font-weight="bold" font-size="14">DRY-RUN</text>
+  <text x="250" y="130" text-anchor="middle" font-size="13" fill="#6F4A19">(direction = draining)</text>
+
+  <text x="100" y="162" font-size="13">upstream children  —  <tspan font-weight="bold">KEEP</tspan></text>
+  <text x="100" y="188" font-size="13" fill="#E65100">downstream children  —  <tspan font-weight="bold">STOP</tspan></text>
+  <text x="100" y="214" font-size="13" fill="#E65100">machineGroups  —  <tspan font-weight="bold">STOP</tspan></text>
+  <text x="100" y="240" font-size="13" fill="#E65100">control loop  —  <tspan font-weight="bold">BLOCKED</tspan></text>
+
+  <line x1="100" y1="268" x2="400" y2="268" stroke="#E65100" stroke-dasharray="3 3" />
+  <text x="100" y="294" font-size="12" font-style="italic">safetyControllerActive = true</text>
+  <text x="100" y="316" font-size="12" font-style="italic">Pumps must stop before sucking air.</text>
+
+  <!-- OVERFILL box -->
+  <rect x="480" y="80" width="340" height="340" fill="#FFEBEE" stroke="#C62828" stroke-width="2" />
+  <text x="650" y="112" text-anchor="middle" font-weight="bold" font-size="14">OVERFILL</text>
+  <text x="650" y="130" text-anchor="middle" font-size="13" fill="#7A1919">(direction = filling)</text>
+
+  <text x="500" y="162" font-size="13" fill="#C62828">upstream children  —  <tspan font-weight="bold">STOP</tspan>  ⚠</text>
+  <text x="500" y="188" font-size="13">downstream children  —  <tspan font-weight="bold">KEEP</tspan></text>
+  <text x="500" y="214" font-size="13">machineGroups  —  <tspan font-weight="bold">KEEP</tspan></text>
+  <text x="500" y="240" font-size="13">control loop  —  <tspan font-weight="bold">ACTIVE</tspan></text>
+
+  <line x1="500" y1="268" x2="800" y2="268" stroke="#C62828" stroke-dasharray="3 3" />
+  <text x="500" y="294" font-size="12" font-style="italic">Level control keeps commanding downstream MGC.</text>
+  <text x="500" y="324" font-size="12" font-style="italic" fill="#C62828">⚠ "upstream STOP" is only correct in a cascaded layout.</text>
+  <text x="500" y="342" font-size="12" font-style="italic" fill="#C62828">In a gravity-sewer station the inflow can't be</text>
+  <text x="500" y="360" font-size="12" font-style="italic" fill="#C62828">stopped — log the spill instead.</text>
+
+  <!-- Triggers block -->
+  <text x="80" y="470" font-weight="bold" font-size="13">Triggers (either condition fires the rule):</text>
+  <text x="100" y="498" font-size="12">• vol &lt; triggerLowVol     (triggerLowVol  = minVol × (1 + pct/100))</text>
+  <text x="100" y="520" font-size="12">• vol &gt; triggerHighVol    (triggerHighVol = maxVolOverflow × pct/100)</text>
+  <text x="100" y="542" font-size="12">• remainingTime &lt; timeleftToFullOrEmptyThresholdSeconds (if enabled)</text>
+</svg>