Notify from the installed web app when a generation finishes.

Co-authored-by: Cursor <cursoragent@cursor.com>

public/sw.js

@@ -0,0 +1,18 @@
+self.addEventListener('install', (event) => {
+  event.waitUntil(self.skipWaiting())
+})
+
+self.addEventListener('activate', (event) => {
+  event.waitUntil(self.clients.claim())
+})
+
+self.addEventListener('notificationclick', (event) => {
+  event.notification.close()
+  event.waitUntil((async () => {
+    const windows = await self.clients.matchAll({ type: 'window', includeUncontrolled: true })
+    for (const client of windows) {
+      if ('focus' in client) return client.focus()
+    }
+    if (self.clients.openWindow) return self.clients.openWindow('/')
+  })())
+})