fix(admin-web): fix API response data extraction for trading endpoints

- Add proper extraction of nested data from { success, data, timestamp } response format

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

frontend/mining-admin-web/src/features/trading/api/trading.api.ts

@@ -42,7 +42,8 @@ export const tradingApi = {
   // 获取交易系统状态
   getTradingStatus: async (): Promise<TradingStatus> => {
     const response = await apiClient.get('/trading/admin/trading/status');
-    return response.data;
+    // 后端返回 { success, data, timestamp }
+    return response.data.data || response.data;
   },
 
   // 激活交易系统
@@ -60,7 +61,8 @@ export const tradingApi = {
   // 获取销毁状态
   getBurnStatus: async (): Promise<BurnStatus> => {
     const response = await apiClient.get('/trading/burn/status');
-    return response.data;
+    // 后端返回 { success, data, timestamp }
+    return response.data.data || response.data;
   },
 
   // 获取销毁记录
@@ -77,6 +79,7 @@ export const tradingApi = {
       params.append('sourceType', sourceType);
     }
     const response = await apiClient.get(`/trading/burn/records?${params.toString()}`);
+    // 后端返回 { data: [...], total: number }
     return response.data;
   },
 
@@ -93,6 +96,7 @@ export const tradingApi = {
     burnProgress: string;
   }> => {
     const response = await apiClient.get('/trading/asset/market');
+    // 后端返回 { success, data, timestamp }
     return response.data.data;
   },
 };