feat(content): add rich content rendering with @mentions and vote segments

- Add PostContentRenderer component for rendering posts/comments with segments
- Add PostMentionInput component for @mention support in post/comment creation
- Add VoteSegmentData and vote segment type for unified post creation API
- Update post and comment services to support segments in API requests
- Fix auth service to clear tokens before login/register
- Improve database initialization with proper close/retry logic
- Add verification check before allowing post creation
- Add metro web shims for react-native-webrtc full package and requireNativeComponent
- Update build config with git hash based version numbers

src/components/business/CommentItem.tsx

@@ -13,6 +13,7 @@ import { Comment, CommentImage } from '../../types';
 import Text from '../common/Text';
 import Avatar from '../common/Avatar';
 import { CompactImageGrid, ImageGridItem } from '../common';
+import PostContentRenderer from './PostContentRenderer';
 
 interface CommentItemProps {
   comment: Comment;
@@ -614,9 +615,17 @@ const CommentItem: React.FC<CommentItemProps> = ({
 
         {/* 评论文本 - 非气泡样式 */}
         <View style={styles.commentContent}>
-          <Text variant="body" color={colors.text.primary} style={styles.text}>
-            {comment.content}
-          </Text>
+          {comment.segments && comment.segments.length > 0 ? (
+            <PostContentRenderer
+              content={comment.content}
+              segments={comment.segments}
+              textStyle={[styles.text, { color: colors.text.primary }]}
+            />
+          ) : (
+            <Text variant="body" color={colors.text.primary} style={styles.text}>
+              {comment.content}
+            </Text>
+          )}
         </View>
 
         {/* 评论图片 */}