refactor(types): 重构类型系统，统一共享类型定义

feat(types): 新增共享类型中心，包含用户、产品、订单等核心领域类型
fix(types): 修复类型定义错误，统一各模块类型引用
style(types): 优化类型文件格式和注释
docs(types): 更新类型文档和变更日志
test(types): 添加类型测试用例
build(types): 配置类型共享路径
chore(types): 清理重复类型定义文件

dashboard/src/pages/Merchant/MerchantManage.tsx

@@ -16,8 +16,8 @@ const MerchantManage: React.FC = () => {
   const fetchMerchants = async () => {
     setLoading(true);
     try {
-      const response = await getMerchants();
-      setMerchants(response.data);
+      const response = await merchantDataSource.fetchMerchants();
+      setMerchants(response);
     } catch (error) {
       message.error('获取商户列表失败');
       console.error('获取商户列表失败:', error);

dashboard/src/pages/Merchant/MerchantOrderManage.tsx

@@ -8,7 +8,7 @@ const { Title, Text } = Typography;
 const { RangePicker } = DatePicker;
 
 const MerchantOrderManage: React.FC = () => {
-  const [orders, setOrders] = useState<Order[]>([]);
+  const [orders, setOrders] = useState<MerchantOrder[]>([]);
   const [merchants, setMerchants] = useState<{ id: string; companyName: string }[]>([]);
   const [loading, setLoading] = useState(false);
   const [searchText, setSearchText] = useState('');
@@ -20,8 +20,8 @@ const MerchantOrderManage: React.FC = () => {
   const fetchOrders = async () => {
     setLoading(true);
     try {
-      const response = await getMerchantOrders();
-      setOrders(response.data);
+      const response = await merchantDataSource.fetchMerchantOrders('');
+      setOrders(response);
     } catch (error) {
       message.error('获取订单列表失败');
       console.error('获取订单列表失败:', error);
@@ -82,12 +82,12 @@ const MerchantOrderManage: React.FC = () => {
     return matchesSearch && matchesMerchant && matchesPlatform && matchesStatus;
   });
 
-  const handleView = (order: Order) => {
+  const handleView = (order: MerchantOrder) => {
     // 跳转到订单详情页面
     message.info(`查看订单详情: ${order.orderId}`);
   };
 
-  const handleStatusUpdate = (order: Order, newStatus: Order['status']) => {
+  const handleStatusUpdate = (order: MerchantOrder, newStatus: string) => {
     // 调用API更新订单状态
     message.info(`更新订单 ${order.orderId} 状态为: ${newStatus}`);
   };
@@ -155,7 +155,7 @@ const MerchantOrderManage: React.FC = () => {
     {
       title: '操作',
       key: 'action',
-      render: (_: any, order: Order) => (
+      render: (_: any, order: MerchantOrder) => (
         <div>
           <Button 
             icon={<EyeOutlined />} 

dashboard/src/pages/Merchant/MerchantSettlementManage.tsx

@@ -9,7 +9,7 @@ const { RangePicker } = DatePicker;
 const { Item } = Form;
 
 const MerchantSettlementManage: React.FC = () => {
-  const [settlements, setSettlements] = useState<Settlement[]>([]);
+  const [settlements, setSettlements] = useState<MerchantSettlement[]>([]);
   const [merchants, setMerchants] = useState<{ id: string; companyName: string }[]>([]);
   const [loading, setLoading] = useState(false);
   const [searchText, setSearchText] = useState('');
@@ -17,7 +17,7 @@ const MerchantSettlementManage: React.FC = () => {
   const [statusFilter, setStatusFilter] = useState<string>('');
   const [dateRange, setDateRange] = useState<[string, string] | null>(null);
   const [isModalVisible, setIsModalVisible] = useState(false);
-  const [selectedSettlement, setSelectedSettlement] = useState<Settlement | null>(null);
+  const [selectedSettlement, setSelectedSettlement] = useState<MerchantSettlement | null>(null);
   const [form] = Form.useForm();
 
   const fetchSettlements = async () => {