fix: 列表页面最新消息展示

app/(tabs)/memo-list.tsx

@@ -16,7 +16,7 @@ import SkeletonItem from '@/components/memo/SkeletonItem';
 import { useUploadManager } from '@/hooks/useUploadManager';
 import { getCachedData, prefetchChatDetail, prefetchChats } from '@/lib/prefetch';
 import { fetchApi } from '@/lib/server-api-util';
-import { Chat } from '@/types/ask';
+import { Chat, getMessageText } from '@/types/ask';
 import { useTranslation } from 'react-i18next';
 
 // 预加载资源
@@ -162,7 +162,7 @@ const MemoList = () => {
                     numberOfLines={1}
                     ellipsizeMode="tail"
                 >
-                    {item.latest_message?.content?.text || t('ask:ask.noMessage')}
+                    {(item.latest_message && getMessageText(item.latest_message)) || t('ask:ask.noMessage')}
                 </Text>
             </View>
         </TouchableOpacity>