Pumping-station demo overhaul + cross-node test harness + bumps

Submodule bumps land the deadlock fix (state.js residue unpark + MGC
optimalControl dispatch reorder) and pumpingStation stopLevel hysteresis.

- Renames examples/pumpingstation-3pumps-dashboard →
  pumpingstation-complete-example with regenerated flow.json. New
  dashboard groups, demand-broadcast wiring, S88 placement rule
  applied, ui-chart trend-split and link-channel naming follow
  .claude/rules/node-red-flow-layout.md.
- New cross-node test harness under test/: end-to-end-pumpingstation
  drives PS + MGC + 3 pumps + physics simulator end-to-end and
  verifies the ~5/15 min cycle.
- Adds Grafana provisioning dashboards (pumping-station.json) and a
  helper sync-example.sh script for export/import to live Node-RED.
- Docker entrypoint + settings + compose tweaks for the persistent
  user dir layout used by the demo.

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

examples/pumpingstation-complete-example/README.md

@@ -0,0 +1,195 @@
+# Pumping Station — Complete Example
+
+End-to-end EVOLV stack: 1 pumpingStation + 1 machineGroupControl + 3 rotatingMachine pumps + 12 measurement nodes (4 per pump), wired through Node-RED to InfluxDB and Grafana.
+
+This is the canonical "everything works together" demo. After any cross-node refactor, run this and verify the Node-RED dashboard, the InfluxDB writes, and the Grafana dashboard all populate.
+
+## Quick start
+
+```bash
+cd /home/znetsixe/EVOLV
+docker compose up -d
+# Wait for http://localhost:1880/nodes to return 200, then:
+curl -s -X POST http://localhost:1880/flows \
+  -H "Content-Type: application/json" \
+  -H "Node-RED-Deployment-Type: full" \
+  --data-binary @examples/pumpingstation-complete-example/flow.json
+```
+
+Then open:
+
+- Node-RED dashboard (realtime + 1h trends): <http://localhost:1880/dashboard>
+- Grafana dashboard (realtime gauges + historic graphs): <http://localhost:3000> (anonymous viewer is on; the dashboard is `EVOLV / Pumping Station (complete)`)
+- InfluxDB UI: <http://localhost:8086> (user `evolv` / password `evolv-dev-pw`)
+
+## What the flow contains
+
+| Layer | Node(s) | Role |
+|---|---|---|
+| Process Cell | `pumpingStation` "Pumping Station" | Wet-well basin model. Levelbased control: drives MGC by basin level. Inflow comes from the Drivers tab; outflow is computed from the pumps. |
+| Unit | `machineGroupControl` "MGC — Pump Group" | Distributes flow across the 3 pumps via `optimalcontrol`. |
+| Equipment | `rotatingMachine` × 3 — Pump A / B / C | Hidrostal H05K-S03R curve. Auto by default; manual setpoint slider per pump when in `virtualControl`. |
+| Control Modules | `measurement` × 12 (4 per pump) | Upstream pressure, downstream pressure, flow, power. Each pump's 4 sensors are driven by a per-pump physics function — values are physically coupled to plant state, not random. |
+| Telemetry | shared `evt:tlm` link channel → http POST → InfluxDB | Every EVOLV node's port-1 payload is converted to v2 line protocol and POSTed to `telemetry` bucket. |
+
+## Tabs
+
+The flow is split across 5 tabs, by **concern**:
+
+| Tab | Lives here | Why |
+|---|---|---|
+| 🏭 **Process Plant** | EVOLV nodes (PS, MGC, 3 pumps, 12 sensors) + per-node output formatters + per-pump physics feeders | The deployable plant model. |
+| 📊 **Dashboard UI** | All `ui-*` widgets, button/setpoint wrappers, dispatch functions | Display + operator inputs. No business logic. |
+| 🎛️ **Demo Drivers** | Inflow generator (Constant / Sine / Diurnal / Storm) + 1Hz tick | Inflow is operator-driven via slider + scenario buttons. Outflow is implicit (the pumps drain the basin). |
+| ⚙️ **Setup & Init** | One-shot `once: true` injects (MGC scaling/mode, pumps mode, initial inflow scenario) | Runs at deploy time only. |
+| 📈 **Telemetry** | link-in `evt:tlm` → line-protocol function → http POST | InfluxDB writer. |
+
+Cross-tab wiring uses **named link-out / link-in pairs**, never direct cross-tab wires.
+
+### Channel contract
+
+| Channel | Direction | What it carries |
+|---|---|---|
+| `cmd:inflow-baseline` | UI → Drivers | numeric m³/h baseline |
+| `cmd:inflow-scenario` | UI → Drivers | `'constant' \| 'sine' \| 'diurnal' \| 'storm'` |
+| `cmd:q_in` | Drivers → process | computed inflow in m³/s |
+| `cmd:Qd` | UI → process | manual demand m³/h (manual mode only) |
+| `cmd:ps-mode` | UI → process | `'levelbased' \| 'manual'` |
+| `cmd:mode` | Setup → process | per-pump `setMode` broadcast |
+| `cmd:station-startup / -shutdown / -estop` | UI → process | station-wide command, fanned to all 3 pumps |
+| `cmd:setpoint-A / -B / -C` | UI → process | per-pump setpoint slider value |
+| `cmd:pump-A-seq / -B-seq / -C-seq` | UI → process | per-pump start/stop |
+| `evt:pump-A / -B / -C` | process → UI | formatted per-pump status |
+| `evt:mgc` | process → UI | MGC totals |
+| `evt:ps` | process → UI | basin state, level, fill |
+| `evt:inflow` | Drivers → UI | live inflow value + active scenario |
+| `evt:tlm` | every EVOLV node → Telemetry | port-1 payload in `{measurement, fields, tags}` shape |
+| `setup:to-mgc` | Setup → process | one-shot MGC scaling/mode init |
+
+## Per-pump physics feeder
+
+Each pump has a `physics_<pump>` function node on the Process Plant tab. It receives:
+
+1. The pump's own port-0 stream (state, predicted flow, predicted power).
+2. PS port-0 stream (basin level), fanned out by `ps_to_physics`.
+
+It computes physically-coupled values for each sensor and emits them to the 4 measurement nodes:
+
+| Sensor | Computation |
+|---|---|
+| Upstream pressure | `ρ g h` where `h = max(0, basinLevel − outflowLevel)`; pump suction sees the basin's hydrostatic head. |
+| Downstream pressure | Idle → static head only (12 m → 1177 mbar). Running → static + flow²-scaled dynamic head (up to ~2354 mbar at q=200 m³/h). |
+| Flow | Mirrors rotatingMachine's predicted flow with 1% Gaussian noise. Zero when the pump is idle. |
+| Power | Mirrors rotatingMachine's predicted power with 0.5% Gaussian noise. Zero when the pump is idle. |
+
+Gaussian noise uses a 12-uniform-sum approximation (no external libs).
+
+## Inflow scenarios
+
+Pick a scenario on the **Realtime** dashboard page (group "Inflow"):
+
+| Scenario | Behaviour |
+|---|---|
+| Constant | `q_h = baseline` (no modulation) |
+| Sine | `baseline · (1 + 0.5 · sin(2πt/240))` — period 4 min |
+| Diurnal | `baseline · (1 + 0.6 · sin(2πt/480 − π/2))` — period 8 min, peak offset |
+| Storm | 4-min cycle: rapid 5× ramp, then linear decay back to baseline |
+
+Slider sets `baseline` in m³/h (0–250). The generator emits `q_in` to PS every second.
+
+## Dashboard map
+
+### Node-RED — `/dashboard`
+
+Realtime page (`/dashboard/realtime`):
+
+1. Inflow — slider, 4 scenario buttons, live value + active scenario label
+2. Station mode + commands — Auto/Manual switch, manual Qd slider, Start All / Stop All / Emergency Stop
+3. Basin realtime — direction, level, volume, fill %, net flow, time-to-full/empty, inflow, outflow, safety state, gauges (level + fill)
+4. MGC — total flow + power (text + gauges), efficiency
+5. Pump A / B / C — state, mode, controller %, flow, power, up/dn pressure (text), setpoint slider, Startup / Shutdown buttons
+
+Trends page (`/dashboard/trends`) — 1-hour rolling windows:
+
+- Basin level + fill %
+- Inflow / Outflow / Per-pump flow (one chart, multi-series)
+- Per-pump power
+- Per-pump up/dn pressure
+
+### Grafana — `EVOLV / Pumping Station (complete)`
+
+Two rows:
+
+- **Realtime** — gauges for basin level + fill, stat panels for total flow / total power / per-pump state.
+- **Historic** — line charts for level + fill, inflow/outflow/net, per-pump flow + power (predicted), per-pump pressure, per-pump sensor flow + power (measured).
+
+Default time range: last 15 minutes. Adjust with the Grafana picker for longer history.
+
+## Verification
+
+```bash
+# 1. Bring up the stack
+docker compose up -d
+sleep 10  # wait for Node-RED ready
+
+# 2. Deploy the flow
+curl -s -X POST http://localhost:1880/flows \
+  -H 'Content-Type: application/json' \
+  -H 'Node-RED-Deployment-Type: full' \
+  --data-binary @examples/pumpingstation-complete-example/flow.json | jq .
+
+# 3. Quick sanity check on Influx writes
+curl -s -X POST 'http://localhost:8086/api/v2/query?org=evolv' \
+  -H 'Authorization: Token evolv-dev-token' \
+  -H 'Accept: application/csv' \
+  -H 'Content-type: application/vnd.flux' \
+  --data 'from(bucket:"telemetry") |> range(start: -1m) |> count() |> group(columns: ["_measurement"])'
+```
+
+You should see counts per measurement (`Pumping Station`, `Pump A`, `MGC — Pump Group`, the per-pump sensors, …) growing in real time.
+
+## Regenerating `flow.json`
+
+`flow.json` is generated from `build_flow.py`. Edit the Python (cleaner diff) and regenerate:
+
+```bash
+cd examples/pumpingstation-complete-example
+python3 build_flow.py > flow.json
+```
+
+The Python is the source of truth.
+
+After regenerating, push the new flow into the running runtime:
+
+```bash
+./scripts/sync-example.sh pumpingstation-complete-example
+```
+
+## Projects + persistence (Node-RED)
+
+The Docker stack uses a named volume (`evolv_nodered_data`) for `/data`, and Node-RED's **Projects** feature is enabled. Each folder under `examples/` is bootstrapped into `/data/projects/<name>/` on first container start with its own `git init` and a synthesized `package.json`. Switching between projects is two clicks in the editor: **menu → Projects → Open Project**.
+
+| What you do | Where it lives | What persists |
+|---|---|---|
+| `docker compose down && up` | Container is recreated; named volume survives | Active flow + project list survive |
+| Edit a flow in the Node-RED editor | `/data/projects/<name>/flow.json` (in volume) | Until `docker compose down -v` |
+| Edit `examples/<name>/build_flow.py` then regenerate | `examples/<name>/flow.json` (in repo) | Always — it's in Git |
+| Run `scripts/sync-example.sh <name>` | Copies repo's `flow.json` → volume's project + reloads | Volume copy now matches repo |
+
+### Adding a new example as a project
+
+1. Create `examples/<your-name>/flow.json` (build it however you like — `build_flow.py` is one way).
+2. Restart the Node-RED container: `docker compose restart nodered`.
+3. Editor → Projects → Open Project → pick `<your-name>`.
+
+The bootstrap is idempotent: existing projects in the volume aren't overwritten. To force a refresh from the repo: delete the project in the volume (`docker exec evolv-nodered rm -rf /data/projects/<name>`) and restart, or use `scripts/sync-example.sh` for a flow-only refresh.
+
+To start fresh (wipe all volume state including flows, sessions, project history): `docker compose down -v`.
+
+## Notable design choices
+
+- **PS in `levelbased` mode** with `manual` mode toggleable from the UI. Levelbased = PS commands MGC by basin level; manual = operator drives MGC via the Qd slider.
+- **Inflow is operator-driven**, outflow is implicit (computed from pump activity). Single steerable knob (the Inflow group) keeps the demo focused.
+- **Sensors driven externally**, not by the measurement node's built-in simulator. The physics feeder is a function node on the Process Plant tab — disable it and sensors freeze, which is a useful failure mode to demonstrate.
+- **All EVOLV port 1 → one shared telemetry channel** (`evt:tlm`) → one writer. Adding a new EVOLV node anywhere in the flow only needs a new `lout_tlm_<id>` link-out + appending the id to `_all_tlm_lout_ids()` in `build_flow.py`.
+- **Dashboard pages split by concern, not data**: realtime widgets never share a page with historical charts.