fix: bw/stats 404, gateway links, history crash

- swr.ts: remove useBandwidth(), drop bw from useDashboard()
- events/route.ts: skip bandwidth SSE (Kubo 0.28.0 unsupported)
- usage/page.tsx: remove getBWStats call + bw references
- helpers.ts: gatewayLink -> ipfs.maos.dedyn.io (subdomain only)
- upload/page.tsx: fix local gatewayLink (subdomain only)
- storage.ts: update default gatewayUrl, add defensive getHistory()

public/sw.js

@@ -1,30 +1,25 @@
-/* ── IPFS Portal — Service Worker v2 ──
+/* ── IPFS Portal — Service Worker v3 ──
  *
  * Cache strategieën per route type:
- *   - Precache: app shell (alle pages)
+ *   - Precache: alleen publieke pages (auth-protected pages worden
+ *     gecachet via stale-while-revalidate tijdens normaal gebruik)
  *   - Cache-first: static assets (fonts, images, CSS, JS)
  *   - Network-first: API calls (/_next/data, /api/*)
  *   - Stale-while-revalidate: navigatie requests
+ *
+ * Let op: auth-protected pages (dashboard, upload, settings, etc.)
+ * worden NIET geprecached — tijdens installatie is er geen sessie-
+ * cookie, dus de middleware redirect naar /login. Alleen publieke
+ * pagina's in de precache.
  */
 
-const CACHE = 'ipfs-portal-v2';
-const STATIC_CACHE = 'ipfs-portal-static-v2';
-const DATA_CACHE = 'ipfs-portal-data-v2';
+const CACHE = 'ipfs-portal-v4';
+const STATIC_CACHE = 'ipfs-portal-static-v4';
+const DATA_CACHE = 'ipfs-portal-data-v4';
 
 const PRECACHE_URLS = [
   '/',
-  '/dashboard',
-  '/upload',
-  '/explorer',
-  '/pins',
-  '/history',
-  '/usage',
-  '/peers',
-  '/users',
-  '/ipns',
   '/login',
-  '/settings',
-  '/profile',
 ];
 
 /* ── Install: precache app shell ── */
@@ -86,9 +81,9 @@ self.addEventListener('fetch', (event) => {
     return;
   }
 
-  // 3. Navigation → stale-while-revalidate
+  // 3. Navigation → network-first (nooit stale HTML serveren, HMR breekt)
   if (isNavigation(request)) {
-    event.respondWith(staleWhileRevalidate(request, CACHE));
+    event.respondWith(networkFirst(request, CACHE));
     return;
   }