3.1

pwa/sw.js

@@ -0,0 +1,26 @@
+const CACHE = 'notifypulse-v3';
+const PRECACHE = ['/pwa/', '/pwa/index.html', '/pwa/manifest.json'];
+
+self.addEventListener('install', e => {
+  e.waitUntil(caches.open(CACHE).then(c => c.addAll(PRECACHE)));
+  self.skipWaiting();
+});
+
+self.addEventListener('activate', e => {
+  e.waitUntil(
+    caches.keys().then(keys =>
+      Promise.all(keys.filter(k => k !== CACHE).map(k => caches.delete(k)))
+    )
+  );
+  self.clients.claim();
+});
+
+self.addEventListener('fetch', e => {
+  const url = new URL(e.request.url);
+  // Always hit network for API calls
+  if (url.pathname.startsWith('/api/')) return;
+  // Cache-first for PWA assets
+  e.respondWith(
+    caches.match(e.request).then(r => r || fetch(e.request))
+  );
+});