feat: Day 10-11 - Agent Configuration System completed

Backend:
- Create agents.yaml config file with 12 agents definition
- Create Prompt templates for topic-evaluation agent
- Implement agentService.ts for loading and managing agent configs
- Create agentController.ts with CRUD operations
- Create agent routes (GET /agents, /agents/:id, etc.)
- Register agent routes in main server

Frontend:
- Create agentApi.ts service module
- Update AgentChatPage to dynamically load agent config from API
- Add loading state and error handling
- Display agent details (description, category, model)

Build: Both frontend and backend build successfully

frontend/src/pages/AgentChatPage.tsx

@@ -1,5 +1,6 @@
 import { useParams } from 'react-router-dom'
-import { Card, Typography, Input, Button, Space, Select, Upload, Tag, Alert, Divider } from 'antd'
+import { useState, useEffect } from 'react'
+import { Card, Typography, Input, Button, Space, Select, Upload, Tag, Alert, Divider, Spin } from 'antd'
 import {
   SendOutlined,
   PaperClipOutlined,
@@ -7,20 +8,57 @@ import {
   FolderOpenOutlined,
   SyncOutlined,
 } from '@ant-design/icons'
-import { AGENTS } from '../layouts/MainLayout'
+import { agentApi, type AgentConfig } from '../api/agentApi'
+import { message } from 'antd'
 
 const { Title, Paragraph } = Typography
 const { TextArea } = Input
 
 const AgentChatPage = () => {
   const { agentId } = useParams()
-  const agent = AGENTS.find((a) => a.id === agentId)
+  const [agent, setAgent] = useState<AgentConfig | null>(null)
+  const [loading, setLoading] = useState(true)
+  const [error, setError] = useState<string | null>(null)
 
-  if (!agent) {
+  // 加载智能体配置
+  useEffect(() => {
+    const fetchAgent = async () => {
+      if (!agentId) return
+
+      try {
+        setLoading(true)
+        const response = await agentApi.getById(agentId)
+        
+        if (response.success && response.data) {
+          setAgent(response.data)
+        } else {
+          setError(response.message || '智能体不存在')
+        }
+      } catch (err) {
+        console.error('Failed to load agent:', err)
+        setError('加载智能体配置失败')
+        message.error('加载智能体配置失败')
+      } finally {
+        setLoading(false)
+      }
+    }
+
+    fetchAgent()
+  }, [agentId])
+
+  if (loading) {
+    return (
+      <div style={{ textAlign: 'center', padding: '100px 0' }}>
+        <Spin size="large" tip="加载智能体配置中..." />
+      </div>
+    )
+  }
+
+  if (error || !agent) {
     return (
       <Alert
         message="智能体不存在"
-        description="请从首页选择一个智能体"
+        description={error || "请从首页选择一个智能体"}
         type="error"
         showIcon
       />
@@ -49,7 +87,10 @@ const AgentChatPage = () => {
               {agent.name}
             </Title>
             <Paragraph type="secondary" style={{ marginBottom: 0 }}>
-              当前模型：DeepSeek-V3
+              {agent.description}
+            </Paragraph>
+            <Paragraph type="secondary" style={{ marginBottom: 0, fontSize: 12 }}>
+              当前模型：DeepSeek-V3 | 分类：{agent.category}
             </Paragraph>
           </div>
         </Space>