处理滚动底部问题

keyBoard/Class/AiTalk/M/KBAIReplyModel.h

@@ -34,7 +34,7 @@ NS_ASSUME_NONNULL_BEGIN
 @property(nonatomic, assign) NSInteger likeCount;
 
 /// 是否已点赞
-@property(nonatomic, assign) BOOL isLiked;
+@property(nonatomic, assign) BOOL liked;
 
 /// 创建时间（时间戳）
 @property(nonatomic, assign) NSTimeInterval createTime;

keyBoard/Class/AiTalk/M/KBAIReplyModel.m

@@ -21,10 +21,6 @@
   };
 }
 
-- (void)setLiked:(NSInteger)liked {
-  // 后端返回的是 NSInteger (0/1)，转换为 BOOL
-  _isLiked = (liked == 1);
-}
 
 - (void)setCreatedAt:(NSString *)createdAt {
   // 后端返回的是字符串时间，转换为时间戳

keyBoard/Class/AiTalk/M/KBAiChatMessage.h

@@ -43,8 +43,14 @@ typedef NS_ENUM(NSInteger, KBAiChatMessageType) {
 /// 是否需要打字机效果（只有当前正在输入的消息才需要）
 @property (nonatomic, assign) BOOL needsTypewriterEffect;
 
+/// 是否处于加载状态（用户消息）
+@property (nonatomic, assign) BOOL isLoading;
+
 #pragma mark - 便捷构造方法
 
+/// 创建加载中的用户消息
++ (instancetype)loadingUserMessage;
+
 /// 创建用户消息
 + (instancetype)userMessageWithText:(NSString *)text;
 

keyBoard/Class/AiTalk/M/KBAiChatMessage.m

@@ -9,12 +9,23 @@
 
 @implementation KBAiChatMessage
 
++ (instancetype)loadingUserMessage {
+    KBAiChatMessage *message = [[KBAiChatMessage alloc] init];
+    message.type = KBAiChatMessageTypeUser;
+    message.text = @"";
+    message.timestamp = [NSDate date];
+    message.isComplete = NO;
+    message.isLoading = YES;
+    return message;
+}
+
 + (instancetype)userMessageWithText:(NSString *)text {
     KBAiChatMessage *message = [[KBAiChatMessage alloc] init];
     message.type = KBAiChatMessageTypeUser;
     message.text = text;
     message.timestamp = [NSDate date];
     message.isComplete = YES;
+    message.isLoading = NO;
     return message;
 }
 
@@ -28,6 +39,7 @@
     message.audioDuration = duration;
     message.audioData = audioData;
     message.isComplete = NO;
+    message.isLoading = NO;
     return message;
 }
 
@@ -41,6 +53,7 @@
     message.audioDuration = 0;
     message.audioData = nil;
     message.isComplete = NO;
+    message.isLoading = NO;
     return message;
 }
 
@@ -53,6 +66,7 @@
     message.audioDuration = 0;
     message.audioData = nil;
     message.isComplete = NO;
+    message.isLoading = NO;
     return message;
 }
 
@@ -61,6 +75,7 @@
     message.type = KBAiChatMessageTypeTime;
     message.timestamp = timestamp;
     message.isComplete = YES;
+    message.isLoading = NO;
     return message;
 }