初步完成数据处理链条

DMS.Application/Models/VariableContext.cs

@@ -0,0 +1,17 @@
+using DMS.Application.DTOs;
+using DMS.Core.Models;
+
+namespace DMS.Application.Models
+{
+    public class VariableContext
+    {
+        public VariableDto Data { get; set; }
+        public bool IsHandled { get; set; }
+
+        public VariableContext(VariableDto data)
+        {
+            Data = data;
+            IsHandled = false; // 默认未处理
+        }
+    }
+}