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>

scripts/sync-example.sh

@@ -0,0 +1,36 @@
+#!/bin/sh
+# Copy examples/<name>/flow.json into the running Node-RED project's
+# flow.json. Use this after regenerating flow.json from build_flow.py
+# when you want the runtime to reload the canonical source.
+#
+# Usage:
+#   scripts/sync-example.sh <project-name>
+#
+# Example:
+#   scripts/sync-example.sh pumpingstation-complete-example
+set -e
+
+NAME="${1:-pumpingstation-complete-example}"
+SRC="examples/$NAME/flow.json"
+CONTAINER="evolv-nodered"
+DST="/data/projects/$NAME/flow.json"
+
+if [ ! -f "$SRC" ]; then
+    echo "error: $SRC not found (run from EVOLV repo root)" >&2
+    exit 1
+fi
+
+if ! docker ps --format '{{.Names}}' | grep -q "^$CONTAINER$"; then
+    echo "error: $CONTAINER is not running" >&2
+    exit 1
+fi
+
+echo "Copying $SRC → $CONTAINER:$DST"
+docker cp "$SRC" "$CONTAINER:$DST"
+
+echo "Reloading flows..."
+curl -s -X POST "http://localhost:1880/flows" \
+    -H "Content-Type: application/json" \
+    -H "Node-RED-Deployment-Type: full" \
+    --data-binary "@$SRC" \
+    -w 'HTTP %{http_code}\n'