P7: charge HC nuit automatique si véhicule branché + toggle 'Réseau HC nuit' ON

- Root cause 1: battery_assist_night ne démarrait jamais (floor décharge 0A
  impossible la nuit) -> idle_wait_conditions jusqu'à dérive du SOC au trigger.
- Root cause 2: allow_grid_hc_night parsé mais jamais utilisé.
- Fix: nightGridHcPreferred dans WINDOWS_SOURCEV2 + BATTERY_CLOUD_LOCKS ->
  grid_hc_allowed dès l'ouverture de la fenêtre HC (EDF ON auto, ACM hold 2A).
- Toggle OFF = comportement historique. Dry-run 7 scénarios validés.
- Outils: n8n-pull/n8n-push (push REST direct, backup auto, node --check).
- Déployé en production le 07/08/2026 15:45, exécutions vérifiées success.

tools/patch-20260807-night-hc-grid.mjs

@@ -0,0 +1,114 @@
+#!/usr/bin/env node
+// Patch 07/08/2026 : charge HC nuit automatique quand un véhicule est branché
+// et que le toggle "Réseau HC nuit" (input_boolean.victron_evcs_allow_grid_hc_night) est ON.
+// Modifie WINDOWS_SOURCEV2 et BATTERY_CLOUD_LOCKS dans le JSON local du workflow.
+
+import fs from 'fs';
+
+const FILE = 'workflows/evcs-surplus-controller-v2.6.json';
+const wf = JSON.parse(fs.readFileSync(FILE, 'utf8'));
+
+function patchNode(nodeName, replacements) {
+  const node = wf.nodes.find(n => n.name === nodeName);
+  if (!node) throw new Error(`Node introuvable: ${nodeName}`);
+  let code = node.parameters.jsCode;
+  for (const [i, { from, to }] of replacements.entries()) {
+    if (!code.includes(from)) {
+      throw new Error(`${nodeName}: pattern #${i + 1} introuvable:\n---\n${from}\n---`);
+    }
+    if (code.split(from).length !== 2) {
+      throw new Error(`${nodeName}: pattern #${i + 1} non unique`);
+    }
+    code = code.replace(from, to);
+  }
+  node.parameters.jsCode = code;
+  console.log(`OK: ${nodeName} patché (${replacements.length} remplacement(s))`);
+}
+
+const HEADER = `// FIX 07/08/2026 : fenêtre HC nuit + véhicule branché + toggle "Réseau HC nuit" ON
+// => préférence réseau HC directe (la VW hybride charge sans intervention manuelle).
+// Toggle OFF => comportement historique (battery_assist_night puis takeover à la cible).
+const nightGridHcPreferred =
+  nightSessionActive &&
+  params.allowGridHcNight;
+
+`;
+
+// ---------- WINDOWS_SOURCEV2 ----------
+patchNode('WINDOWS_SOURCEV2', [
+  {
+    from: `const batteryAssistAllowed =
+  nightSessionActive &&
+  parsed.soc > batteryHardFloorPct &&
+  parsed.soc > gridTakeoverTriggerPct &&
+  !nightTakeoverLatched &&
+  !batteryRecoveryUrgent;`,
+    to: HEADER + `const batteryAssistAllowed =
+  nightSessionActive &&
+  !nightGridHcPreferred &&
+  parsed.soc > batteryHardFloorPct &&
+  parsed.soc > gridTakeoverTriggerPct &&
+  !nightTakeoverLatched &&
+  !batteryRecoveryUrgent;`
+  },
+  {
+    from: `const nightGridTakeoverNeeded =
+  nightSessionActive &&
+  (
+    batteryBelowHardFloor ||
+    batteryAtOrBelowGridTakeoverTrigger ||
+    batteryRecoveryUrgent ||
+    nightTakeoverLatched
+  );`,
+    to: `const nightGridTakeoverNeeded =
+  nightSessionActive &&
+  (
+    nightGridHcPreferred ||
+    batteryBelowHardFloor ||
+    batteryAtOrBelowGridTakeoverTrigger ||
+    batteryRecoveryUrgent ||
+    nightTakeoverLatched
+  );`
+  }
+]);
+
+// ---------- BATTERY_CLOUD_LOCKS ----------
+patchNode('BATTERY_CLOUD_LOCKS', [
+  {
+    from: `const batteryAssistAllowed =
+  nightSessionActive &&
+  !batteryBelowHardFloor &&
+  !batteryRecoveryUrgent &&
+  !nightTakeoverLatched &&
+  parsed.soc > gridTakeoverTriggerPct;`,
+    to: HEADER + `const batteryAssistAllowed =
+  nightSessionActive &&
+  !nightGridHcPreferred &&
+  !batteryBelowHardFloor &&
+  !batteryRecoveryUrgent &&
+  !nightTakeoverLatched &&
+  parsed.soc > gridTakeoverTriggerPct;`
+  },
+  {
+    from: `const nightGridTakeoverNeeded =
+  nightSessionActive &&
+  (
+    batteryBelowHardFloor ||
+    batteryAtOrBelowGridTakeoverTrigger ||
+    batteryRecoveryUrgent ||
+    nightTakeoverLatched
+  );`,
+    to: `const nightGridTakeoverNeeded =
+  nightSessionActive &&
+  (
+    nightGridHcPreferred ||
+    batteryBelowHardFloor ||
+    batteryAtOrBelowGridTakeoverTrigger ||
+    batteryRecoveryUrgent ||
+    nightTakeoverLatched
+  );`
+  }
+]);
+
+fs.writeFileSync(FILE, JSON.stringify(wf, null, 2) + '\n');
+console.log(`Écrit: ${FILE}`);