diff --git a/server.js b/server.js
index 17a4653..d99390f 100644
--- a/server.js
+++ b/server.js
@@ -1,6 +1,7 @@
 const path = require('path');
 const http = require('http');
 const crypto = require('crypto');
+const fs = require('fs');
 const express = require('express');
 const webpush = require('web-push');
 
@@ -416,6 +417,75 @@ function sendPush(session, result) {
 // Statische Dateien & Dashboard-Dateien
 // ---------------------------------------------------------------------------
 
+// Wird in jedes ausgelieferte Dashboard-HTML injiziert: speichert den Zustand
+// der Checklisten-Häkchen im localStorage und stellt ihn beim Laden wieder her
+// (inkl. „Liste zurücksetzen"-Button). Key = Label-Text der Checkbox, damit
+// der Stand auch bei Layout-Änderungen stabil bleibt.
+const CHECKLIST_SCRIPT = `<script>
+(function () {
+  var KEY = 'rc-checks:' + location.pathname;
+  var boxes = document.querySelectorAll('input[type=checkbox]');
+  if (!boxes.length) return;
+  var saved = {};
+  try { saved = JSON.parse(localStorage.getItem(KEY) || '{}'); } catch (e) {}
+
+  function labelFor(box, i) {
+    var li = box.closest('li');
+    var t = li ? li.querySelector('.check-text') : null;
+    var text = (t || li || {}).textContent || '';
+    return text.trim() || 'item-' + i;
+  }
+
+  boxes.forEach(function (box, i) {
+    var k = labelFor(box, i);
+    if (saved[k] !== undefined) box.checked = !!saved[k];
+    box.addEventListener('change', function () {
+      saved[k] = box.checked;
+      try { localStorage.setItem(KEY, JSON.stringify(saved)); } catch (e) {}
+    });
+  });
+
+  function refresh() {
+    if (typeof update === 'function') update();
+  }
+
+  // „Liste zurücksetzen"-Button am Anfang der ersten Checklisten-Section
+  var firstBox = boxes[0];
+  var section = firstBox.closest('section') || firstBox.closest('div') || document.body;
+  var btn = document.createElement('button');
+  btn.type = 'button';
+  btn.textContent = '↺ Liste zurücksetzen';
+  btn.style.cssText =
+    'margin:0 0 12px;padding:6px 14px;font-size:12px;font-weight:600;border-radius:8px;' +
+    'border:1px solid rgba(100,116,139,.4);background:transparent;color:inherit;cursor:pointer;';
+  btn.addEventListener('click', function () {
+    if (!confirm('Alle Häkchen dieser Liste zurücksetzen?')) return;
+    try { localStorage.removeItem(KEY); } catch (e) {}
+    saved = {};
+    boxes.forEach(function (b) { b.checked = false; });
+    refresh();
+  });
+  section.insertBefore(btn, section.firstChild);
+
+  refresh();
+})();
+</script>`;
+
+const CHECKLIST_MARKER = 'rc-checks';
+
+app.get('/dashboards/:name.html', (req, res, next) => {
+  const name = path.basename(req.params.name);
+  const file = path.join(__dirname, 'dashboards', `${name}.html`);
+  fs.readFile(file, 'utf8', (err, html) => {
+    if (err) return next();
+    if (!html.includes(CHECKLIST_MARKER)) {
+      html = html.replace(/<\/body>/i, `${CHECKLIST_SCRIPT}\n</body>`);
+    }
+    res.setHeader('Cache-Control', 'no-cache');
+    res.type('html').send(html);
+  });
+});
+
 app.use(
   '/dashboards',
   express.static(path.join(__dirname, 'dashboards'), {