Notify from the installed web app when a generation finishes.

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

server/routes/manifest.webmanifest.ts

@@ -0,0 +1,24 @@
+import { isXaigenStudio } from '~/utils/videoModels'
+
+export default defineEventHandler((event) => {
+  const pub = useRuntimeConfig().public as { instanceName?: string; studio?: string }
+  const xaigen = isXaigenStudio(pub)
+  const name = String(pub.instanceName || (xaigen ? 'xAIGen' : 'AIGen'))
+  setHeader(event, 'Content-Type', 'application/manifest+json')
+  setHeader(event, 'Cache-Control', 'no-cache')
+  return {
+    name,
+    short_name: name,
+    start_url: '/',
+    scope: '/',
+    display: 'standalone',
+    background_color: '#09090b',
+    theme_color: '#09090b',
+    icons: [{
+      src: xaigen ? '/favicon.svg' : '/favicon-aigen.svg',
+      sizes: 'any',
+      type: 'image/svg+xml',
+      purpose: 'any'
+    }]
+  }
+})