Add program reminders and category filtering to the guide UI

Enhance health diagnostics with EPG quality and source metrics

sw.js

@@ -75,3 +75,20 @@ self.addEventListener('fetch', e => {
       .catch(() => caches.match(e.request))
   );
 });
+
+self.addEventListener('notificationclick', e => {
+  const url = e.notification?.data?.url || '/index.php';
+  e.notification.close();
+  e.waitUntil(
+    clients.matchAll({ type: 'window', includeUncontrolled: true }).then(windowClients => {
+      for (const client of windowClients) {
+        if ('focus' in client) {
+          client.navigate(url);
+          return client.focus();
+        }
+      }
+      if (clients.openWindow) return clients.openWindow(url);
+      return undefined;
+    })
+  );
+});