Added lobby auto creation

public/sw.js

@@ -0,0 +1,37 @@
+'use strict';
+
+self.addEventListener('push', (event) => {
+  let payload = {
+    title: 'Dota lobby update',
+    body: 'The monitored lobby changed.',
+    url: '/admin',
+    tag: 'doka-lobby',
+  };
+
+  try {
+    if (event.data) payload = { ...payload, ...event.data.json() };
+  } catch {
+    if (event.data) payload.body = event.data.text();
+  }
+
+  event.waitUntil(self.registration.showNotification(payload.title, {
+    body: payload.body,
+    tag: payload.tag,
+    data: { url: payload.url || '/admin' },
+    requireInteraction: true,
+  }));
+});
+
+self.addEventListener('notificationclick', (event) => {
+  event.notification.close();
+  const target = new URL(event.notification.data?.url || '/admin', self.location.origin).href;
+  event.waitUntil((async () => {
+    const windows = await self.clients.matchAll({ type: 'window', includeUncontrolled: true });
+    const existing = windows.find((client) => client.url.startsWith(self.location.origin));
+    if (existing) {
+      await existing.navigate(target);
+      return existing.focus();
+    }
+    return self.clients.openWindow(target);
+  })());
+});