todo preparado como pwa con branding correcto

client/public/sw.js

@@ -0,0 +1,15 @@
+// Minimal service worker to enable PWA installability
+self.addEventListener("install", () => {
+  // Activate immediately on install
+  self.skipWaiting();
+});
+
+self.addEventListener("activate", (event) => {
+  event.waitUntil(self.clients.claim());
+});
+
+// Provide a basic fetch handler (required by some browsers for installability)
+self.addEventListener("fetch", (event) => {
+  event.respondWith(fetch(event.request));
+});
+