added cache-busting service-worker and removed caching for service-worker.js (vite uses sw.js)

public/service-worker.js

@@ -0,0 +1,24 @@
+// public/service-worker.js
+self.addEventListener('install', () => self.skipWaiting());
+
+self.addEventListener('activate', async () => {
+  // Unregister old CRA SW
+  const regs = await self.registration.scope ? [self.registration] : await self.clients.getRegistrations();
+  for (const reg of regs) {
+    if (reg && reg.scriptURL.endsWith('service-worker.js')) {
+      await reg.unregister();
+    }
+  }
+
+  // Clear all caches
+  if ('caches' in self) {
+    const keys = await caches.keys();
+    for (const key of keys) {
+      await caches.delete(key);
+    }
+  }
+
+  // Reload all clients
+  const clients = await self.clients.matchAll({ type: 'window' });
+  clients.forEach(client => client.navigate(client.url));
+});