清理引用，将NavigatorServices更改为使用Message来实现导航的切换

Data/Entities/DbUser.cs

@@ -5,7 +5,6 @@ namespace PMSWPF.Data.Entities;
 [SugarTable("User")]
 public class DbUser
 {
-    [SugarColumn(IsPrimaryKey = true, IsIdentity = true)]//数据库是自增才配自增 
+    [SugarColumn(IsPrimaryKey = true, IsIdentity = true)] //数据库是自增才配自增 
     public int Id { get; set; }
-    
 }