fix

Application/Exceptions/BusinessException.cs

@@ -0,0 +1,19 @@
+namespace Application.Exceptions;
+
+/// <summary>
+/// 业务逻辑异常（对应HTTP 500 Internal Server Error）
+/// </summary>
+/// <remarks>
+/// 用于业务操作失败、数据状态不一致等场景
+/// </remarks>
+public class BusinessException : ApplicationException
+{
+    public BusinessException(string message) : base(message)
+    {
+    }
+
+    public BusinessException(string message, Exception innerException)
+        : base(message, innerException)
+    {
+    }
+}