eranos: use our own relay (nrelay.us-ea.st), not Agora's ditto relays

Starts clean instead of showing every Agora campaign.

src/lib/appRelays.ts

@@ -26,10 +26,7 @@ function normalizeUrl(url: string): string {
  */
 export const APP_RELAYS: RelayMetadata = {
   relays: [
-    { url: 'wss://relay.ditto.pub/', read: true, write: true },
-    { url: 'wss://relay.dreamith.to/', read: true, write: true },
-    { url: 'wss://relay.primal.net/', read: false, write: true },
-    { url: 'wss://relay.damus.io/', read: false, write: true },
+    { url: 'wss://nrelay.us-ea.st/', read: true, write: true },
   ],
   updatedAt: 0,
 };