added versioning

sw.ts

@@ -0,0 +1,31 @@
+/// <reference lib="webworker" />
+declare const self: ServiceWorkerGlobalScope;
+
+import { clientsClaim } from 'workbox-core';
+import { cleanupOutdatedCaches, precacheAndRoute } from 'workbox-precaching';
+
+// Bump this version to force SW update - changes to this constant change the SW file hash
+const CACHE_VERSION = '2026-03-06-v1';
+
+// @ts-ignore - __WB_MANIFEST is injected at build time by vite-plugin-pwa
+precacheAndRoute(self.__WB_MANIFEST);
+
+cleanupOutdatedCaches();
+
+// Force immediate activation of new SW
+self.addEventListener('install', () => {
+    console.log('[SW] Installing, skipping waiting...');
+    self.skipWaiting();
+});
+
+self.addEventListener('activate', () => {
+    console.log('[SW] Activating, claiming clients...');
+    clientsClaim();
+});
+
+// Handle SKIP_WAITING message from client
+self.addEventListener('message', (event) => {
+    if (event.data?.type === 'SKIP_WAITING') {
+        self.skipWaiting();
+    }
+});