Add DM decryption on new contact advert

frontend/src/App.tsx

@@ -137,6 +137,11 @@ export function App() {
           description: error.details,
         });
       },
+      onSuccess: (success: { message: string; details?: string }) => {
+        toast.success(success.message, {
+          description: success.details,
+        });
+      },
       onContacts: (data: Contact[]) => setContacts(data),
       onChannels: (data: Channel[]) => setChannels(data),
       onMessage: (msg: Message) => {

frontend/src/useWebSocket.ts

@@ -11,6 +11,11 @@ interface ErrorEvent {
   details?: string;
 }
 
+interface SuccessEvent {
+  message: string;
+  details?: string;
+}
+
 interface UseWebSocketOptions {
   onHealth?: (health: HealthStatus) => void;
   onContacts?: (contacts: Contact[]) => void;
@@ -20,6 +25,7 @@ interface UseWebSocketOptions {
   onRawPacket?: (packet: RawPacket) => void;
   onMessageAcked?: (messageId: number, ackCount: number, paths?: MessagePath[]) => void;
   onError?: (error: ErrorEvent) => void;
+  onSuccess?: (success: SuccessEvent) => void;
 }
 
 export function useWebSocket(options: UseWebSocketOptions) {
@@ -94,6 +100,9 @@ export function useWebSocket(options: UseWebSocketOptions) {
           case 'error':
             options.onError?.(msg.data as ErrorEvent);
             break;
+          case 'success':
+            options.onSuccess?.(msg.data as SuccessEvent);
+            break;
           case 'pong':
             // Heartbeat response, ignore
             break;