refactor: 迁移 UI 组件库从 Ant Design 至 TDesign

- 替换 antd 为 tdesign-react 作为主要 UI 组件库
- 引入 Recharts 替代 @ant-design/charts 实现图表功能
- 移除主题系统相关代码（ThemeContext、themes 目录）
- 更新所有组件以适配 TDesign 组件 API
- 更新测试用例以匹配新的组件实现
- 新增 TDesign 和 Recharts 集成规范文档

frontend/src/hooks/useModels.ts

@@ -1,5 +1,5 @@
 import { useQuery, useMutation, useQueryClient } from '@tanstack/react-query';
-import { App } from 'antd';
+import { MessagePlugin } from 'tdesign-react';
 import type { CreateModelInput, UpdateModelInput } from '@/types';
 import * as api from '@/api/models';
 
@@ -17,49 +17,46 @@ export function useModels(providerId?: string) {
 
 export function useCreateModel() {
   const queryClient = useQueryClient();
-  const { message } = App.useApp();
 
   return useMutation({
     mutationFn: (input: CreateModelInput) => api.createModel(input),
     onSuccess: () => {
       queryClient.invalidateQueries({ queryKey: modelKeys.all });
-      message.success('模型创建成功');
+      MessagePlugin.success('模型创建成功');
     },
     onError: (error: Error) => {
-      message.error(error.message);
+      MessagePlugin.error(error.message);
     },
   });
 }
 
 export function useUpdateModel() {
   const queryClient = useQueryClient();
-  const { message } = App.useApp();
 
   return useMutation({
     mutationFn: ({ id, input }: { id: string; input: UpdateModelInput }) =>
       api.updateModel(id, input),
     onSuccess: () => {
       queryClient.invalidateQueries({ queryKey: modelKeys.all });
-      message.success('模型更新成功');
+      MessagePlugin.success('模型更新成功');
     },
     onError: (error: Error) => {
-      message.error(error.message);
+      MessagePlugin.error(error.message);
     },
   });
 }
 
 export function useDeleteModel() {
   const queryClient = useQueryClient();
-  const { message } = App.useApp();
 
   return useMutation({
     mutationFn: (id: string) => api.deleteModel(id),
     onSuccess: () => {
       queryClient.invalidateQueries({ queryKey: modelKeys.all });
-      message.success('模型删除成功');
+      MessagePlugin.success('模型删除成功');
     },
     onError: (error: Error) => {
-      message.error(error.message);
+      MessagePlugin.error(error.message);
     },
   });
 }