feat: add PWA support with manifest and service worker

public/manifest.json

@@ -0,0 +1,15 @@
+{
+  "name": "Winupdate Neo",
+  "short_name": "Winupdate",
+  "start_url": "/",
+  "display": "standalone",
+  "background_color": "#F9FAFB",
+  "theme_color": "#F9FAFB",
+  "icons": [
+    {
+      "src": "/favicon.png",
+      "sizes": "512x512",
+      "type": "image/png"
+    }
+  ]
+}

public/sw.js

@@ -0,0 +1,23 @@
+// Minimal PWA service worker with no API caching
+
+self.addEventListener("install", (event) => {
+  // Skip waiting so updated SW takes control faster
+  // but we do not pre-cache anything to keep behavior minimal
+  // @ts-ignore
+  self.skipWaiting();
+});
+
+self.addEventListener("activate", (event) => {
+  // Claim clients so the SW starts controlling pages immediately
+  // @ts-ignore
+  event.waitUntil(self.clients.claim());
+});
+
+self.addEventListener("fetch", (event) => {
+  const request = event.request;
+
+  // Do not cache anything; just let the request pass through.
+  // Especially do not touch API requests.
+  // If needed in future, add logic here, but keep it disabled for now.
+  return;
+});