添加消息类型枚举和相关字段，优化消息记录服务的添加方法，更新多个组件以支持新增分类对话框

Service/MessageRecordService.cs

@@ -5,7 +5,7 @@ public interface IMessageRecordService
     Task<(IEnumerable<MessageRecord> List, long Total)> GetPagedListAsync(int pageIndex, int pageSize);
     Task<MessageRecord?> GetByIdAsync(long id);
     Task<bool> AddAsync(MessageRecord message);
-    Task<bool> AddAsync(string title, string content);
+    Task<bool> AddAsync(string title, string content, MessageType type = MessageType.Text);
     Task<bool> MarkAsReadAsync(long id);
     Task<bool> MarkAllAsReadAsync();
     Task<bool> DeleteAsync(long id);
@@ -29,12 +29,13 @@ public class MessageRecordService(IMessageRecordRepository messageRepo, INotific
         return await messageRepo.AddAsync(message);
     }
 
-    public async Task<bool> AddAsync(string title, string content)
+    public async Task<bool> AddAsync(string title, string content, MessageType type = MessageType.Text)
     {
         var message = new MessageRecord
         {
             Title = title,
             Content = content,
+            MessageType = type,
             IsRead = false
         };
         var result = await messageRepo.AddAsync(message);