update pay function

src/views/AgentChat/hooks/useAgentChat.ts

@@ -164,7 +164,7 @@ export const useAgentChat = ({
             isUser: m.type === MessageTypes.USER,
             content: m.content,
           })),
-        user_id: user?.id || 'anonymous',
+        user_id: user?.id ? String(user.id) : 'anonymous',
         user_nickname: user?.nickname || '匿名用户',
         user_avatar: user?.avatar || '',
         subscription_type: user?.subscription_type || 'free',

src/views/AgentChat/hooks/useAgentSessions.ts

@@ -95,7 +95,7 @@ export const useAgentSessions = ({
     setIsLoadingSessions(true);
     try {
       const response = await axios.get('/mcp/agent/sessions', {
-        params: { user_id: user.id, limit: 50 },
+        params: { user_id: String(user.id), limit: 50 },
       });
 
       if (response.data.success) {