feat(Comment): enhance like functionality for comments and replies

- Updated CommentItem component to accept the comment object in the onLike callback, allowing for more detailed like handling.
- Added a like button for replies, improving user interaction with nested comments.
- Refactored handleLikeComment function in PostDetailScreen for optimized state management and error handling during like operations.
- Enhanced SettingsScreen to provide debug information for theme preferences, improving user experience in theme selection.
- Updated themeStore to dynamically manage system theme changes and improve overall theme handling.

src/components/business/CommentItem.tsx

@@ -18,7 +18,7 @@ interface CommentItemProps {
   comment: Comment;
   onUserPress: () => void;
   onReply: () => void;
-  onLike: () => void;
+  onLike: (comment: Comment) => void; // 点赞回调，传入评论对象
   floorNumber?: number; // 楼层号
   isAuthor?: boolean; // 是否是楼主
   replyToUser?: string; // 回复给哪位用户
@@ -504,6 +504,25 @@ const CommentItem: React.FC<CommentItemProps> = ({
                       回复
                     </Text>
                   </TouchableOpacity>
+                  {/* 点赞按钮 */}
+                  <TouchableOpacity
+                    style={styles.subActionButton}
+                    onPress={() => onLike?.(reply)}
+                    activeOpacity={0.7}
+                  >
+                    <MaterialCommunityIcons
+                      name={reply.is_liked ? 'heart' : 'heart-outline'}
+                      size={12}
+                      color={reply.is_liked ? colors.error.main : colors.text.hint}
+                    />
+                    <Text
+                      variant="caption"
+                      color={reply.is_liked ? colors.error.main : colors.text.hint}
+                      style={styles.subActionText}
+                    >
+                      {reply.likes_count > 0 ? formatNumber(reply.likes_count) : '赞'}
+                    </Text>
+                  </TouchableOpacity>
                   {/* 删除按钮 - 子评论作者可见 */}
                   {isSubReplyAuthor && (
                     <TouchableOpacity
@@ -592,7 +611,7 @@ const CommentItem: React.FC<CommentItemProps> = ({
         {/* 操作按钮 - 更紧凑 */}
         <View style={styles.actions}>
           {/* 点赞 */}
-          <TouchableOpacity style={styles.actionButton} onPress={onLike}>
+          <TouchableOpacity style={styles.actionButton} onPress={() => onLike(comment)}>
             <MaterialCommunityIcons
               name={comment.is_liked ? 'heart' : 'heart-outline'}
               size={14}