refactor(ui): 移除McpStatusList中不必要的React导入和文本显示

- 删除了未使用的useEffect导入，简化依赖引入
- 移除了界面中显示的当前索引及总数文本，减少冗余信息显示
- 优化了McpStatusList组件代码的可读性和整洁度

Author: hqwlkj

src/ui/McpStatusList.tsx

@@ -1,4 +1,4 @@
-import React, { useState, useMemo, useCallback, useEffect } from "react";
+import React, { useState, useMemo, useCallback } from "react";
 import { Box, Text, useInput, useWindowSize } from "ink";
 import type { McpServerStatus } from "../mcp/mcp-manager";
 
@@ -414,9 +414,6 @@ function ServerDetailView({
             {server.name}
           </Text>
           <Text dimColor>— Details</Text>
-          <Text>
-            {activeIndex + 1}/{totalItems}
-          </Text>
         </Box>
         {/* Server info */}
         <Box paddingX={1} marginLeft={3}>