消息传递优化，有变更则主动推送

DOAN.ServiceCore/DoanBackgroundService.cs

@@ -154,6 +154,9 @@ namespace DOAN.ServiceCore
                     if (updateStoragelocationList.Any())
                     {
                         await DbScoped.SugarScope.CopyNew().Updateable(updateStoragelocationList).ExecuteCommandAsync();
+                        // 发送库存变更Socket通知
+                        string changeMessage = "库存变动";
+                        await notificationHubContext.Clients.All.SendAsync("PBL_storagelocation_change", changeMessage);
                     }
 
                     // 插入库存变更日志
@@ -161,11 +164,6 @@ namespace DOAN.ServiceCore
                     {
                         await DbScoped.SugarScope.CopyNew().Insertable(inventoryLogs).ExecuteCommandAsync();
                     }
-
-                    // 发送Socket通知
-                    string changeMessage = "库存变动";
-                    await notificationHubContext.Clients.All.SendAsync("PBL_storagelocation_change", changeMessage);
-
                     // 添加延迟以避免频繁查询
                     await Task.Delay(200, stoppingToken);
                 }