fix customer ws subscription

web/app/ai-chat/page.js

@@ -114,7 +114,10 @@ function AiChatPage() {
           lastMessageIdRef.current = msg.id;
         } catch { /* silent */ }
       });
-      client.subscribe(`/topic/chat/conversations`, (frame) => {
+      const convTopic = user?.role === "CUSTOMER"
+        ? `/user/queue/chat/conversations`
+        : `/topic/chat/conversations`;
+      client.subscribe(convTopic, (frame) => {
         try {
           const conv = JSON.parse(frame.body);
           if (conv.id === convId) setConversation(conv);
@@ -124,7 +127,7 @@ function AiChatPage() {
     };
     stompRef.current = client;
     client.activate();
-  }, [token]);
+  }, [token, user?.role]);
 
   useEffect(() => {
     if (!token || authLoading) return;