Refactor footer scripts into default layout and enhance service worker registration with sync capabilities

_includes/footer.html

@@ -17,22 +17,3 @@
   </ul>
   <span></span>
 </footer>
-<script
-			  src="https://code.jquery.com/jquery-3.7.1.min.js"
-			  integrity="sha256-/JqT3SQfawRcv/BIHPThkBvs0OEvtFFmqPF/lYI/Cxo="
-			  crossorigin="anonymous"></script>
-<script src="{{ "/assets/js/materialize.min.js" | relative_url }}"></script>
-<script>
-  document.addEventListener('DOMContentLoaded', function() {
-    var sidenavElems = document.querySelectorAll('.sidenav');
-    var sidenavInstances = M.Sidenav.init(sidenavElems, {});
-  });
-
-  document.querySelectorAll("button").forEach(button => {
-    const href = button.getAttribute("data-href");
-    if (!href) return;
-    button.addEventListener("click", () => {
-        window.location.href = button.getAttribute("data-href");
-    });
-  });
-</script>

_layouts/default.html

@@ -9,10 +9,32 @@
     {{ content }}
   </main>
   {% include footer.html %}
+  <script src="{{ "/assets/js/materialize.min.js" | relative_url }}"></script>
+  <script>
+    document.addEventListener('DOMContentLoaded', function() {
+      var sidenavElems = document.querySelectorAll('.sidenav');
+      var sidenavInstances = M.Sidenav.init(sidenavElems, {});
+    });
+
+    document.querySelectorAll("button").forEach(button => {
+      const href = button.getAttribute("data-href");
+      if (!href) return;
+      button.addEventListener("click", () => {
+          window.location.href = button.getAttribute("data-href");
+      });
+    });
+  </script>
   <script>
     if ('serviceWorker' in navigator) {
       navigator.serviceWorker.register("{{ '/assets/js/service-worker.js' | relative_url }}")
-        .then(() => console.log("✅ Service Worker registriert"))
+        .then((reg) => {
+          console.log("✅ Service Worker registriert");
+          if ('SyncManager' in window) {
+            reg.sync.register('cache-all-pages')
+              .then(() => console.log("✅ Alle Seiten werden gecached"))
+              .catch(err => console.error("❌ Fehler beim Sync:", err));
+          }
+        })
         .catch(error => console.log("❌ Service Worker Fehler:", error));
     }
   </script>