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()

src/lib/swr.ts

@@ -8,7 +8,7 @@
 
 import useSWR from 'swr';
 import useSWRInfinite from 'swr/infinite';
-import type { IPFSPin, RepoStats, BWStats, IPFSNodeInfo, IPFSUser } from './api';
+import type { IPFSPin, RepoStats, IPFSNodeInfo, IPFSUser } from './api';
 
 /* ════════════════════════════ Fetcher ════════════════════════════ */
 
@@ -88,38 +88,19 @@ export function useRepoStats(refreshInterval = DEFAULT_REFRESH) {
   });
 }
 
-/* ════════════════════════════ Bandwidth ════════════════════════════ */
-
-export function useBandwidth(refreshInterval = DEFAULT_REFRESH) {
-  return useSWR<BWStats>('/api/bw/stats', async (path) => {
-    const raw = await fetcher<{
-      TotalIn?: number; TotalOut?: number; RateIn?: number; RateOut?: number;
-    }>(path);
-    return {
-      totalIn: raw.TotalIn ?? 0,
-      totalOut: raw.TotalOut ?? 0,
-      rateIn: raw.RateIn ?? 0,
-      rateOut: raw.RateOut ?? 0,
-    };
-  }, {
-    refreshInterval,
-    revalidateOnFocus: true,
-  });
-}
-
 /* ════════════════════════════ Dashboard (alles-in-1) ════════════════════════════ */
 
 export interface DashboardData {
   peers: Peer[];
   pins: IPFSPin[];
   repo: RepoStats | null;
-  bw: BWStats | null;
+  bw: null;
   health: { status: string; node: string } | null;
 }
 
 export function useDashboard(refreshInterval = DEFAULT_REFRESH) {
   return useSWR<DashboardData>('/api/health', async (healthPath) => {
-    const [health, peers, pins, repo, bw] = await Promise.all([
+    const [health, peers, pins, repo] = await Promise.all([
       fetcher<{ status: string; node: string }>(healthPath).catch(() => null as any),
       fetcher<{ Peers?: { Peer: string; Addr: string; Latency: string }[] }>('/api/peers')
         .then((raw) => (raw.Peers || []).map((p) => ({ id: p.Peer, addr: p.Addr, latency: p.Latency || '—' })))
@@ -130,12 +111,9 @@ export function useDashboard(refreshInterval = DEFAULT_REFRESH) {
       fetcher<{ RepoSize?: number; StorageMax?: number; NumObjects?: number }>('/api/repo/stats')
         .then((raw) => ({ repoSize: raw.RepoSize ?? 0, storageMax: raw.StorageMax ?? 0, numObjects: raw.NumObjects ?? 0, repoPath: '', version: '' }))
         .catch(() => null),
-      fetcher<{ TotalIn?: number; TotalOut?: number }>('/api/bw/stats')
-        .then((raw) => ({ totalIn: raw.TotalIn ?? 0, totalOut: raw.TotalOut ?? 0, rateIn: 0, rateOut: 0 }))
-        .catch(() => null),
     ]);
 
-    return { peers, pins, repo, bw, health };
+    return { peers, pins, repo, bw: null, health };
   }, {
     refreshInterval,
     revalidateOnFocus: true,