1

keyBoard/Class/AiTalk/V/KBPersonaChatCell.m

@@ -202,8 +202,14 @@ static NSString * const KBChatSessionDidResetNotification = @"KBChatSessionDidRe
     // 关键修复：清空消息时停止音频播放，避免状态混乱
     [self.chatView stopPlayingAudio];
     
-    // 如果有缓存，直接显示
+    // 确保开场白在第一条
+    [self ensureOpeningMessageAtTop];
+
+    // 如果有消息，直接显示（包含开场白）
     if (self.messages.count > 0) {
+        // 同步缓存，避免下次从缓存缺少开场白
+        [[KBAIChatMessageCacheManager shared] saveMessages:self.messages
+                                             forCompanionId:persona.personaId];
         [self.chatView reloadWithMessages:self.messages
                                keepOffset:NO
                           scrollToBottom:YES];
@@ -287,14 +293,19 @@ static NSString * const KBChatSessionDidResetNotification = @"KBChatSessionDidRe
             [newMessages addObject:message];
         }
         
-        // 插入到顶部（历史消息）
+        // 插入历史消息（确保开场白始终是第一条）
         if (weakSelf.currentPage == 1) {
             // 第一页，直接赋值
             weakSelf.messages = newMessages;
+            [weakSelf ensureOpeningMessageAtTop];
         } else {
-            // 后续页，插入到顶部
-            NSIndexSet *indexSet = [NSIndexSet indexSetWithIndexesInRange:NSMakeRange(0, newMessages.count)];
-            [weakSelf.messages insertObjects:newMessages atIndexes:indexSet];
+            // 后续页，插入到开场白之后
+            [weakSelf ensureOpeningMessageAtTop];
+            if (newMessages.count > 0) {
+                NSUInteger insertIndex = [weakSelf hasOpeningMessageAtTop] ? 1 : 0;
+                NSIndexSet *indexSet = [NSIndexSet indexSetWithIndexesInRange:NSMakeRange(insertIndex, newMessages.count)];
+                [weakSelf.messages insertObjects:newMessages atIndexes:indexSet];
+            }
         }
         
         // 刷新 UI
@@ -306,8 +317,8 @@ static NSString * const KBChatSessionDidResetNotification = @"KBChatSessionDidRe
                                   scrollToBottom:scrollToBottom];
             [weakSelf.chatView endLoadMoreWithHasMoreData:weakSelf.hasMoreHistory];
             
-            // ✅ 保存到缓存
-            [[KBAIChatMessageCacheManager shared] saveMessages:weakSelf.messages 
+            // ✅ 保存到缓存（包含开场白）
+            [[KBAIChatMessageCacheManager shared] saveMessages:weakSelf.messages
                                                  forCompanionId:companionId];
         });
         
@@ -332,10 +343,7 @@ static NSString * const KBChatSessionDidResetNotification = @"KBChatSessionDidRe
 
 - (void)showOpeningMessage {
     // 显示开场白作为第一条消息
-    KBAiChatMessage *openingMsg = [KBAiChatMessage assistantMessageWithText:self.persona.introText];
-    openingMsg.isComplete = YES;
-    openingMsg.needsTypewriterEffect = NO;
-    [self.messages addObject:openingMsg];
+    [self ensureOpeningMessageAtTop];
     
     dispatch_async(dispatch_get_main_queue(), ^{
         [self.chatView reloadWithMessages:self.messages
@@ -344,6 +352,41 @@ static NSString * const KBChatSessionDidResetNotification = @"KBChatSessionDidRe
     });
 }
 
+- (BOOL)hasOpeningMessageAtTop {
+    if (self.messages.count == 0) {
+        return NO;
+    }
+    return [self isOpeningMessage:self.messages.firstObject];
+}
+
+- (BOOL)isOpeningMessage:(KBAiChatMessage *)message {
+    if (!message) {
+        return NO;
+    }
+    NSString *introText = self.persona.introText ?: @"";
+    if (introText.length == 0) {
+        return NO;
+    }
+    return (message.type == KBAiChatMessageTypeAssistant) && [message.text isEqualToString:introText];
+}
+
+- (void)ensureOpeningMessageAtTop {
+    NSString *introText = self.persona.introText ?: @"";
+    if (introText.length == 0) {
+        return;
+    }
+    if (!self.messages) {
+        self.messages = [NSMutableArray array];
+    }
+    if ([self hasOpeningMessageAtTop]) {
+        return;
+    }
+    KBAiChatMessage *openingMsg = [KBAiChatMessage assistantMessageWithText:introText];
+    openingMsg.isComplete = YES;
+    openingMsg.needsTypewriterEffect = NO;
+    [self.messages insertObject:openingMsg atIndex:0];
+}
+
 #pragma mark - 通知处理
 
 /// 处理聊天会话被重置的通知
@@ -368,10 +411,8 @@ static NSString * const KBChatSessionDidResetNotification = @"KBChatSessionDidRe
         // 清空聊天视图
         [self.chatView clearMessages];
         
-        // 显示开场白
-        if (self.persona.introText.length > 0) {
-            [self showOpeningMessage];
-        }
+        // 显示开场白（始终保持第一条）
+        [self showOpeningMessage];
     }
 }
 
@@ -386,13 +427,14 @@ static NSString * const KBChatSessionDidResetNotification = @"KBChatSessionDidRe
         self.messages = [NSMutableArray array];
     }
     
+    [self ensureOpeningMessageAtTop];
     KBAiChatMessage *message = [KBAiChatMessage userMessageWithText:text];
     [self.messages addObject:message];
     [self.chatView addMessage:message autoScroll:YES];
 }
 
 - (void)appendAssistantMessage:(NSString *)text
-                       audioId:(NSString *)audioId {
+                        audioId:(NSString *)audioId {
     if (text.length == 0) {
         return;
     }
@@ -401,6 +443,7 @@ static NSString * const KBChatSessionDidResetNotification = @"KBChatSessionDidRe
         self.messages = [NSMutableArray array];
     }
     
+    [self ensureOpeningMessageAtTop];
     KBAiChatMessage *message = [KBAiChatMessage assistantMessageWithText:text
                                                                  audioId:audioId];
     message.needsTypewriterEffect = YES;