feat: 添加评论、反应、离线编辑及主题定制功能

- 实现评论系统，包括评论输入、列表展示和集成指南
- 添加反应功能组件（ReactionBar、ReactionButton、ReactionPicker）
- 实现离线编辑支持，包括同步状态管理和冲突解决
- 添加主题定制功能，支持多种配色方案和主题预览
- 新增多视图布局选项（时间线、分组、砌体视图）
- 实现个人资料编辑器，支持头像、简介和自定义字段编辑
- 添加统计页面，展示存储使用情况和上传趋势
- 新增相册管理功能，支持相册创建、编辑和照片管理
- 实现响应式设计和加载骨架屏组件
- 扩展国际化支持，新增孟加拉语、波斯语、印尼语、日语、葡萄牙语等语言
- 添加错误边界组件和离线指示器
- 更新配置文件、路由和依赖项
- 新增完整的文档、测试用例和集成指南

src/components/Comments/CommentList.tsx

@@ -0,0 +1,129 @@
+/**
+ * CommentList Component
+ * Feature: personal-user-enhancements
+ * 
+ * Displays a list of comments with virtualization for long lists
+ */
+
+import React, { useMemo } from 'react';
+import { Empty, Divider, Spin } from 'antd';
+import { FixedSizeList as List } from 'react-window';
+import CommentItem from './CommentItem';
+
+export interface CommentListProps {
+  /** Array of comments to display */
+  comments: API.Comment[];
+  /** Loading state */
+  loading?: boolean;
+  /** Callback when comment is edited */
+  onEdit?: (id: string, text: string) => void | Promise<void>;
+  /** Callback when comment is deleted */
+  onDelete?: (id: string) => void | Promise<void>;
+  /** Loading state for edit operation */
+  editLoading?: boolean;
+  /** Loading state for delete operation */
+  deleteLoading?: boolean;
+  /** Enable virtualization (default: true for >20 comments) */
+  enableVirtualization?: boolean;
+  /** Height of the list container (for virtualization) */
+  height?: number;
+  /** Item height estimate (for virtualization) */
+  itemHeight?: number;
+}
+
+const VIRTUALIZATION_THRESHOLD = 20;
+const DEFAULT_ITEM_HEIGHT = 100;
+const DEFAULT_LIST_HEIGHT = 600;
+
+const CommentList: React.FC<CommentListProps> = ({
+  comments,
+  loading = false,
+  onEdit,
+  onDelete,
+  editLoading = false,
+  deleteLoading = false,
+  enableVirtualization,
+  height = DEFAULT_LIST_HEIGHT,
+  itemHeight = DEFAULT_ITEM_HEIGHT,
+}) => {
+  // Sort comments chronologically (oldest first)
+  const sortedComments = useMemo(() => {
+    return [...comments].sort((a, b) => {
+      return new Date(a.createdAt).getTime() - new Date(b.createdAt).getTime();
+    });
+  }, [comments]);
+
+  // Determine if virtualization should be used
+  const shouldVirtualize = useMemo(() => {
+    if (enableVirtualization !== undefined) {
+      return enableVirtualization;
+    }
+    return sortedComments.length > VIRTUALIZATION_THRESHOLD;
+  }, [enableVirtualization, sortedComments.length]);
+
+  // Show loading state
+  if (loading) {
+    return (
+      <div style={{ textAlign: 'center', padding: '40px 0' }}>
+        <Spin size="large" />
+      </div>
+    );
+  }
+
+  // Show empty state
+  if (sortedComments.length === 0) {
+    return (
+      <Empty
+        description="No comments yet"
+        style={{ padding: '40px 0' }}
+      />
+    );
+  }
+
+  // Render a single comment item
+  const renderCommentItem = (comment: API.Comment, index: number) => (
+    <div key={comment.id}>
+      <CommentItem
+        comment={comment}
+        onEdit={onEdit}
+        onDelete={onDelete}
+        editLoading={editLoading}
+        deleteLoading={deleteLoading}
+      />
+      {index < sortedComments.length - 1 && <Divider style={{ margin: '8px 0' }} />}
+    </div>
+  );
+
+  // Render with virtualization for long lists
+  if (shouldVirtualize) {
+    const Row = ({ index, style }: { index: number; style: React.CSSProperties }) => {
+      const comment = sortedComments[index];
+      return (
+        <div style={style}>
+          {renderCommentItem(comment, index)}
+        </div>
+      );
+    };
+
+    return (
+      <List
+        height={height}
+        itemCount={sortedComments.length}
+        itemSize={itemHeight}
+        width="100%"
+        overscanCount={5}
+      >
+        {Row}
+      </List>
+    );
+  }
+
+  // Render without virtualization for short lists
+  return (
+    <div>
+      {sortedComments.map((comment, index) => renderCommentItem(comment, index))}
+    </div>
+  );
+};
+
+export default CommentList;