fix: address final PWA review findings

public/sw.js

@@ -10,7 +10,11 @@ self.addEventListener("install", (event) => {
 self.addEventListener("activate", (event) => {
   event.waitUntil(
     caches.keys()
-      .then((keys) => Promise.all(keys.filter((key) => key !== CACHE_NAME).map((key) => caches.delete(key))))
+      .then((keys) => Promise.all(
+        keys
+          .filter((key) => key.startsWith("agendamax-shell-") && key !== CACHE_NAME)
+          .map((key) => caches.delete(key))
+      ))
       .then(() => self.clients.claim())
   );
 });
@@ -24,7 +28,7 @@ self.addEventListener("fetch", (event) => {
     event.respondWith(
       fetch(request)
         .then((response) => {
-          if (response.ok) {
+          if (request.credentials === "omit" && response.ok) {
             const copy = response.clone();
             void caches.open(CACHE_NAME).then((cache) => cache.put(request, copy));
           }
@@ -36,7 +40,7 @@ self.addEventListener("fetch", (event) => {
   }
 
   const cacheableDestination = new Set(["script", "style", "image", "font", "manifest", "worker"]);
-  if (!cacheableDestination.has(request.destination)) return;
+  if (request.credentials !== "omit" || !cacheableDestination.has(request.destination)) return;
 
   event.respondWith(
     caches.match(request).then((cached) => {