feat: 添加待确认分类功能，支持获取和确认未分类交易记录；优化相关组件和服务

Entity/MessageRecord.cs

@@ -43,4 +43,9 @@ public class MessageRecord : BaseEntity
     /// 是否已读
     /// </summary>
     public bool IsRead { get; set; } = false;
+
+    /// <summary>
+    /// 跳转URL
+    /// </summary>
+    public string? Url { get; set; }
 }

Entity/TransactionRecord.cs

@@ -50,6 +50,16 @@ public class TransactionRecord : BaseEntity
     /// </summary>
     public string Classify { get; set; } = string.Empty;
 
+    /// <summary>
+    /// 待确认的分类（AI或规则建议，但尚未正式确认）
+    /// </summary>
+    public string? UnconfirmedClassify { get; set; }
+
+    /// <summary>
+    /// 待确认的类型
+    /// </summary>
+    public TransactionType? UnconfirmedType { get; set; }
+
     /// <summary>
     /// 导入编号
     /// </summary>