feat(frontend): Day 21 knowledge base management frontend completed

frontend/src/pages/AgentChatPage.tsx

@@ -1,6 +1,6 @@
 import { useParams } from 'react-router-dom'
 import { useState, useEffect } from 'react'
-import { Card, Typography, Space, Alert, Spin, message } from 'antd'
+import { Space, Alert, Spin, message } from 'antd'
 import { RobotOutlined } from '@ant-design/icons'
 import { agentApi, type AgentConfig } from '../api/agentApi'
 import conversationApi, { type Conversation, type Message } from '../api/conversationApi'
@@ -9,8 +9,6 @@ import MessageInput from '../components/chat/MessageInput'
 import ModelSelector, { type ModelType } from '../components/chat/ModelSelector'
 import { useProjectStore } from '../stores/useProjectStore'
 
-const { Title, Paragraph } = Typography
-
 const AgentChatPage = () => {
   const { agentId } = useParams()
   const { currentProject } = useProjectStore()
@@ -71,10 +69,8 @@ const AgentChatPage = () => {
           title: `与${agent.name}的对话`,
         })
 
-        if (response.success && response.data) {
-          setConversation(response.data)
-          setMessages([])
-        }
+        setConversation(response.data.data || null)
+        setMessages([])
       } catch (err) {
         console.error('Failed to create conversation:', err)
         message.error('创建对话失败')