Feature: EMS-Konfiguration im Web-UI (v1.5.1)

- Modal zeigt EMS-Felder nur bei KATHREIN_WALLBOX (toggleEmsSection)
- openModal lädt ems_min_pv/timeout/target_hour/phases aus Gerätekonfig
- saveInverter speichert EMS-Parameter in inverters.json
- main.py übergibt EMS-Konfig aus inv_cfg an EmsController()

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

haos-addon/src/web/index.html

@@ -226,6 +226,26 @@
       <input type="text" id="modal-prefix" placeholder="growatt/wechselrichter1"></div>
     <div class="field"><label>Abfrageintervall (Sekunden)</label>
       <input type="number" id="modal-interval" value="30" min="5"></div>
+
+    <div id="ems-section" style="display:none; border-top:1px solid var(--border); margin-top:14px; padding-top:14px;">
+      <div style="font-size:12px; font-weight:600; text-transform:uppercase; letter-spacing:.06em; color:var(--accent); margin-bottom:12px;">EMS — Ladesteuerung</div>
+      <div class="field"><label>Mindest-PV-Überschuss (W)</label>
+        <input type="number" id="ems-min-pv" value="1400" min="100" step="100">
+        <div style="font-size:11px;color:var(--muted);margin-top:3px">Mindestleistung für PV-Laden (min. 6A × 230V = 1380W)</div></div>
+      <div class="field"><label>Timeout ohne PV (Stunden)</label>
+        <input type="number" id="ems-timeout" value="4" min="0.5" max="24" step="0.5">
+        <div style="font-size:11px;color:var(--muted);margin-top:3px">Nach dieser Zeit ohne Überschuss startet Zwangsladen</div></div>
+      <div class="field"><label>Vollladung bis (Uhr)</label>
+        <input type="number" id="ems-target-hour" value="6" min="0" max="23">
+        <div style="font-size:11px;color:var(--muted);margin-top:3px">Zielzeit für vollgeladenes Auto (z.B. 6 = 06:00 Uhr)</div></div>
+      <div class="field"><label>Anzahl Phasen</label>
+        <select id="ems-phases">
+          <option value="1">1-phasig</option>
+          <option value="2">2-phasig</option>
+          <option value="3" selected>3-phasig</option>
+        </select></div>
+    </div>
+
     <div class="modal-actions">
       <button class="btn" onclick="closeModal()">Abbrechen</button>
       <button class="btn btn-primary" onclick="saveInverter()">Speichern</button>
@@ -437,20 +457,31 @@ function renderInverterList() {
   el.innerHTML = cards + `<div class="add-btn" onclick="openModal()">＋ Gerät hinzufügen</div>`;
 }
 
+function toggleEmsSection(model) {
+  document.getElementById("ems-section").style.display =
+    model === "KATHREIN_WALLBOX" ? "" : "none";
+}
+
 async function openModal(invId) {
   await loadModels();
   const modal = document.getElementById("modal-backdrop");
+  const modelSel = document.getElementById("modal-model");
+  modelSel.onchange = () => toggleEmsSection(modelSel.value);
   if (invId) {
     const inv = invertersList.find(i => i.id === invId) || {};
     document.getElementById("modal-title").textContent = "Gerät bearbeiten";
     document.getElementById("modal-id").value = inv.id || "";
     document.getElementById("modal-name").value = inv.name || "";
-    document.getElementById("modal-model").value = inv.inverter_model || "MIC_1500_TL_X";
+    modelSel.value = inv.inverter_model || "MIC_1500_TL_X";
     document.getElementById("modal-ip").value = inv.modbus_ip || "";
     document.getElementById("modal-port").value = inv.modbus_port || 502;
     document.getElementById("modal-addr").value = inv.modbus_address || 1;
     document.getElementById("modal-prefix").value = inv.mqtt_topic_prefix || "";
     document.getElementById("modal-interval").value = inv.update_interval || 30;
+    document.getElementById("ems-min-pv").value = inv.ems_min_pv ?? 1400;
+    document.getElementById("ems-timeout").value = inv.ems_timeout ?? 4;
+    document.getElementById("ems-target-hour").value = inv.ems_target_hour ?? 6;
+    document.getElementById("ems-phases").value = inv.ems_phases ?? 3;
   } else {
     document.getElementById("modal-title").textContent = "Gerät hinzufügen";
     document.getElementById("modal-id").value = "";
@@ -460,7 +491,12 @@ async function openModal(invId) {
     document.getElementById("modal-addr").value = "1";
     document.getElementById("modal-prefix").value = "growatt/wechselrichter" + (invertersList.length + 1);
     document.getElementById("modal-interval").value = "30";
+    document.getElementById("ems-min-pv").value = "1400";
+    document.getElementById("ems-timeout").value = "4";
+    document.getElementById("ems-target-hour").value = "6";
+    document.getElementById("ems-phases").value = "3";
   }
+  toggleEmsSection(modelSel.value);
   modal.classList.add("open");
 }
 
@@ -477,16 +513,23 @@ async function saveInverter() {
     const r = await fetchJSON(api("api/new-id"), {method: "POST"});
     id = r.id;
   }
+  const model = document.getElementById("modal-model").value;
   const inv = {
     id,
     name: document.getElementById("modal-name").value.trim() || "Wechselrichter",
-    inverter_model: document.getElementById("modal-model").value,
+    inverter_model: model,
     modbus_ip: document.getElementById("modal-ip").value.trim(),
     modbus_port: parseInt(document.getElementById("modal-port").value),
     modbus_address: parseInt(document.getElementById("modal-addr").value),
     mqtt_topic_prefix: document.getElementById("modal-prefix").value.trim(),
     update_interval: parseInt(document.getElementById("modal-interval").value),
   };
+  if (model === "KATHREIN_WALLBOX") {
+    inv.ems_min_pv = parseInt(document.getElementById("ems-min-pv").value);
+    inv.ems_timeout = parseFloat(document.getElementById("ems-timeout").value);
+    inv.ems_target_hour = parseInt(document.getElementById("ems-target-hour").value);
+    inv.ems_phases = parseInt(document.getElementById("ems-phases").value);
+  }
   const idx = invertersList.findIndex(i => i.id === id);
   if (idx >= 0) invertersList[idx] = inv; else invertersList.push(inv);
   try {