fix(TradeOAService): 增加OA接口调用超时处理和异常捕获

增加60秒超时设置并捕获TaskCanceledException和其他异常，返回友好的错误信息

YLErpDAL/Modules/TradeModule/TradeOAService.cs

@@ -296,14 +296,29 @@ namespace YLErp.Modules.TradeModule
                 logger.Info($"国联OA接口URL: {requestUrl}");
 
                 // 调用OA接口 (POST请求，dataMap放在请求体中)
-                var httpClient = new HttpClientWrap(baseUrl);
-                var response = httpClient.PostJson(requestUrl, dataMap, null);
+                string response = null;
+                try
+                {
+                    // 设置较长的超时时间，默认15秒可能不够
+                    var httpClient = new HttpClientWrap(baseUrl, 60); // 60秒超时
+                    response = httpClient.PostJson(requestUrl, dataMap, null);
 
-                logger.Info($"国联OA接口返回: {response}");
+                    logger.Info($"国联OA接口返回: {response}");
 
-                // 解析响应
-                var responseObj = JsonHelper.Deserialize<GuoLianOAResponse>(response);
-                return responseObj;
+                    // 解析响应
+                    var responseObj = JsonHelper.Deserialize<GuoLianOAResponse>(response);
+                    return responseObj;
+                }
+                catch (TaskCanceledException ex)
+                {
+                    logger.Error($"调用OA接口时任务被取消：{ex.Message}", ex);
+                    return new GuoLianOAResponse() { code = -2, data = new GuoLianOAData { msg = "调用OA接口超时，请检查网络连接" } };
+                }
+                catch (Exception ex)
+                {
+                    logger.Error($"调用OA接口时发生异常：{ex.Message}，响应内容：{response}", ex);
+                    return new GuoLianOAResponse() { code = -2, data = new GuoLianOAData { msg = $"调用OA接口时发生异常: {ex.Message}" } };
+                }
             }
             catch (Exception ex)
             {