feat: added more optimization and sw

sw.js

@@ -0,0 +1,54 @@
+const CACHE_VERSION = "v1-20250727"; // update this on every deploy!
+const CACHE_NAME = `c2yz-cache-${CACHE_VERSION}`;
+
+const ASSETS_TO_CACHE = [
+  "/",
+  "/index.html",
+  "/styles.css",
+  "/main.js",
+  "/assets/fonts/Coiny-Regular-subset.ttf",
+  "/assets/card.png",
+  "/assets/mike-czyz.webp",
+  "/manifest.json",
+];
+
+self.addEventListener("install", (event) => {
+  event.waitUntil(
+    caches.open(CACHE_NAME).then((cache) => cache.addAll(ASSETS_TO_CACHE))
+  );
+  self.skipWaiting();
+});
+
+self.addEventListener("activate", (event) => {
+  event.waitUntil(
+    caches
+      .keys()
+      .then((keys) =>
+        Promise.all(
+          keys.filter((k) => k !== CACHE_NAME).map((k) => caches.delete(k))
+        )
+      )
+  );
+  self.clients.claim();
+});
+
+self.addEventListener("fetch", (event) => {
+  event.respondWith(
+    caches.match(event.request, { ignoreSearch: true }).then(
+      (cached) =>
+        cached ||
+        fetch(event.request)
+          .then((response) => {
+            return response;
+          })
+          .catch(() => {
+            // Optional: fallback response when offline and not cached
+            // return caches.match('/offline.html');
+          })
+    )
+  );
+});
+
+self.addEventListener("message", (event) => {
+  if (event.data === "skipWaiting") self.skipWaiting();
+});