refactor(FlexScreen): 模块化重构与性能优化

目录结构优化:
- styles.ts: 提取颜色常量 COLORS 和样式对象
- constants.ts: 提取配置常量 (STORAGE_KEY、默认列表、热门推荐)
- types.ts: 新增子组件 Props 类型定义

子组件拆分:
- FlexScreenHeader.tsx: 头部组件 (标题、连接状态、操作按钮)
- SearchPanel.tsx: 搜索面板 (输入框 + 结果下拉列表)
- HotRecommendations.tsx: 热门推荐组件

性能优化:
- 所有子组件使用 memo 包裹
- 主组件使用 useMemo 缓存计算值 (displayedWatchlist、connectionStatus)
- 使用 useCallback 包裹所有回调函数

代码精简:
- index.tsx 从 509 行精简至 302 行
- 移除内联颜色常量和配置

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude <noreply@anthropic.com>

src/views/StockOverview/components/FlexScreen/components/FlexScreenHeader.tsx

@@ -0,0 +1,82 @@
+/**
+ * FlexScreenHeader - 灵活屏头部组件
+ * 包含标题、连接状态、操作按钮
+ */
+import React, { memo } from 'react';
+import {
+  Flex,
+  HStack,
+  Heading,
+  Text,
+  IconButton,
+  Icon,
+  Badge,
+  Tooltip,
+  Spacer,
+} from '@chakra-ui/react';
+import { Monitor, Wifi, ChevronDown, ChevronUp } from 'lucide-react';
+
+import type { FlexScreenHeaderProps } from '../types';
+import { COLORS, actionButtonStyles, collapseButtonStyles } from '../styles';
+
+const FlexScreenHeader: React.FC<FlexScreenHeaderProps> = memo(({
+  connectionStatus,
+  isAnyConnected,
+  isCollapsed,
+  onToggleCollapse,
+  onClearWatchlist,
+  onResetWatchlist,
+}) => {
+  return (
+    <Flex align="center" mb={4}>
+      <HStack spacing={3}>
+        <Icon as={Monitor} boxSize={6} color={COLORS.accent} />
+        <Heading size="md" color={COLORS.text}>
+          灵活屏
+        </Heading>
+        <Tooltip label={connectionStatus.text}>
+          <Badge
+            colorScheme={connectionStatus.color}
+            variant="subtle"
+            display="flex"
+            alignItems="center"
+            gap={1}
+          >
+            <Icon as={Wifi} boxSize={3} />
+            {isAnyConnected ? '实时' : '离线'}
+          </Badge>
+        </Tooltip>
+      </HStack>
+      <Spacer />
+      <HStack spacing={3}>
+        {/* 清空列表 */}
+        <Text
+          {...actionButtonStyles}
+          _hover={{ color: 'red.400' }}
+          onClick={onClearWatchlist}
+        >
+          清空列表
+        </Text>
+        {/* 恢复默认 */}
+        <Text
+          {...actionButtonStyles}
+          _hover={{ color: COLORS.accent }}
+          onClick={onResetWatchlist}
+        >
+          恢复默认
+        </Text>
+        {/* 折叠按钮 */}
+        <IconButton
+          icon={isCollapsed ? <ChevronDown size={16} /> : <ChevronUp size={16} />}
+          {...collapseButtonStyles}
+          onClick={onToggleCollapse}
+          aria-label={isCollapsed ? '展开' : '收起'}
+        />
+      </HStack>
+    </Flex>
+  );
+});
+
+FlexScreenHeader.displayName = 'FlexScreenHeader';
+
+export default FlexScreenHeader;

src/views/StockOverview/components/FlexScreen/components/HotRecommendations.tsx

@@ -0,0 +1,46 @@
+/**
+ * HotRecommendations - 热门推荐组件
+ * 当自选列表为空时显示热门证券推荐
+ */
+import React, { memo } from 'react';
+import {
+  Box,
+  Flex,
+  Text,
+  Tag,
+  TagLabel,
+} from '@chakra-ui/react';
+
+import type { HotRecommendationsProps } from '../types';
+import { COLORS } from '../styles';
+import { HOT_RECOMMENDATIONS } from '../constants';
+
+const HotRecommendations: React.FC<HotRecommendationsProps> = memo(({ onAddSecurity }) => {
+  return (
+    <Box mb={4}>
+      <Text fontSize="sm" color={COLORS.subText} mb={2}>
+        热门推荐（点击添加）
+      </Text>
+      <Flex flexWrap="wrap" gap={2}>
+        {HOT_RECOMMENDATIONS.map(item => (
+          <Tag
+            key={item.code}
+            size="md"
+            variant="outline"
+            borderColor={COLORS.accent}
+            color={COLORS.text}
+            cursor="pointer"
+            _hover={{ bg: COLORS.accentHover }}
+            onClick={() => onAddSecurity(item)}
+          >
+            <TagLabel>{item.name}</TagLabel>
+          </Tag>
+        ))}
+      </Flex>
+    </Box>
+  );
+});
+
+HotRecommendations.displayName = 'HotRecommendations';
+
+export default HotRecommendations;

src/views/StockOverview/components/FlexScreen/components/SearchPanel.tsx

@@ -0,0 +1,128 @@
+/**
+ * SearchPanel - 搜索面板组件
+ * 包含搜索输入框和搜索结果下拉列表
+ */
+import React, { memo } from 'react';
+import {
+  Box,
+  VStack,
+  HStack,
+  Text,
+  Input,
+  InputGroup,
+  InputLeftElement,
+  InputRightElement,
+  IconButton,
+  Collapse,
+  List,
+  ListItem,
+  Spinner,
+  Center,
+  Badge,
+} from '@chakra-ui/react';
+import { Search, X, Plus } from 'lucide-react';
+
+import type { SearchPanelProps } from '../types';
+import { COLORS, searchInputStyles, searchDropdownStyles } from '../styles';
+
+const SearchPanel: React.FC<SearchPanelProps> = memo(({
+  searchQuery,
+  onSearchQueryChange,
+  searchResults,
+  isSearching,
+  showResults,
+  onAddSecurity,
+  onClearSearch,
+}) => {
+  return (
+    <Box position="relative" mb={4}>
+      <InputGroup size="md">
+        <InputLeftElement pointerEvents="none">
+          <Search size={16} color={COLORS.subText} />
+        </InputLeftElement>
+        <Input
+          placeholder="搜索股票/指数代码或名称..."
+          value={searchQuery}
+          onChange={e => onSearchQueryChange(e.target.value)}
+          {...searchInputStyles}
+        />
+        {searchQuery && (
+          <InputRightElement>
+            <IconButton
+              size="sm"
+              icon={<X size={16} />}
+              variant="ghost"
+              color={COLORS.subText}
+              _hover={{ bg: COLORS.hoverBg, color: COLORS.text }}
+              onClick={onClearSearch}
+              aria-label="清空"
+            />
+          </InputRightElement>
+        )}
+      </InputGroup>
+
+      {/* 搜索结果下拉 */}
+      <Collapse in={showResults} animateOpacity>
+        <Box {...searchDropdownStyles}>
+          {isSearching ? (
+            <Center p={4}>
+              <Spinner size="sm" color={COLORS.accent} />
+            </Center>
+          ) : searchResults.length > 0 ? (
+            <List spacing={0}>
+              {searchResults.map((stock, index) => (
+                <ListItem
+                  key={`${stock.stock_code}-${stock.isIndex ? 'index' : 'stock'}`}
+                  px={4}
+                  py={2}
+                  cursor="pointer"
+                  _hover={{ bg: COLORS.hoverBg }}
+                  onClick={() => onAddSecurity(stock)}
+                  borderBottomWidth={index < searchResults.length - 1 ? '1px' : '0'}
+                  borderColor={COLORS.border}
+                >
+                  <HStack justify="space-between">
+                    <VStack align="start" spacing={0}>
+                      <HStack spacing={2}>
+                        <Text fontWeight="medium" color={COLORS.text}>
+                          {stock.stock_name}
+                        </Text>
+                        <Badge
+                          colorScheme={stock.isIndex ? 'purple' : 'blue'}
+                          fontSize="xs"
+                          variant="subtle"
+                        >
+                          {stock.isIndex ? '指数' : '股票'}
+                        </Badge>
+                      </HStack>
+                      <Text fontSize="xs" color={COLORS.subText}>
+                        {stock.stock_code}
+                      </Text>
+                    </VStack>
+                    <IconButton
+                      icon={<Plus size={16} />}
+                      size="xs"
+                      colorScheme="purple"
+                      variant="ghost"
+                      aria-label="添加"
+                    />
+                  </HStack>
+                </ListItem>
+              ))}
+            </List>
+          ) : (
+            <Center p={4}>
+              <Text color={COLORS.subText} fontSize="sm">
+                未找到相关证券
+              </Text>
+            </Center>
+          )}
+        </Box>
+      </Collapse>
+    </Box>
+  );
+});
+
+SearchPanel.displayName = 'SearchPanel';
+
+export default SearchPanel;

src/views/StockOverview/components/FlexScreen/components/index.ts

@@ -5,3 +5,6 @@
 export { default as MiniTimelineChart } from './MiniTimelineChart';
 export { default as OrderBookPanel } from './OrderBookPanel';
 export { default as QuoteTile } from './QuoteTile';
+export { default as FlexScreenHeader } from './FlexScreenHeader';
+export { default as SearchPanel } from './SearchPanel';
+export { default as HotRecommendations } from './HotRecommendations';

src/views/StockOverview/components/FlexScreen/constants.ts

@@ -0,0 +1,35 @@
+/**
+ * FlexScreen 配置常量
+ */
+import type { WatchlistItem } from './types';
+
+/** 本地存储 key */
+export const STORAGE_KEY = 'flexscreen_watchlist';
+
+/** 搜索防抖延迟 (ms) */
+export const SEARCH_DEBOUNCE_MS = 300;
+
+/** 搜索结果数量限制 */
+export const SEARCH_LIMIT = 10;
+
+/** 收起时显示的项目数量 */
+export const COLLAPSED_ITEMS_COUNT = 4;
+
+/** 默认自选列表 */
+export const DEFAULT_WATCHLIST: WatchlistItem[] = [
+  { code: '000001', name: '上证指数', isIndex: true },
+  { code: '399001', name: '深证成指', isIndex: true },
+  { code: '399006', name: '创业板指', isIndex: true },
+];
+
+/** 热门推荐列表 */
+export const HOT_RECOMMENDATIONS: WatchlistItem[] = [
+  { code: '000001', name: '上证指数', isIndex: true },
+  { code: '399001', name: '深证成指', isIndex: true },
+  { code: '399006', name: '创业板指', isIndex: true },
+  { code: '399300', name: '沪深300', isIndex: true },
+  { code: '600519', name: '贵州茅台', isIndex: false },
+  { code: '000858', name: '五粮液', isIndex: false },
+  { code: '300750', name: '宁德时代', isIndex: false },
+  { code: '002594', name: '比亚迪', isIndex: false },
+];

src/views/StockOverview/components/FlexScreen/index.tsx

@@ -1,5 +1,5 @@
 /**
- * 灵活屏组件
+ * FlexScreen - 灵活屏组件
  * 用户可自定义添加关注的指数/个股，实时显示行情
  *
  * 功能：
@@ -11,90 +11,44 @@
  */
 import React, { useState, useEffect, useCallback, useMemo } from 'react';
 import {
-  Box,
   Card,
   CardBody,
   VStack,
-  HStack,
-  Heading,
   Text,
-  Input,
-  InputGroup,
-  InputLeftElement,
-  InputRightElement,
-  IconButton,
   SimpleGrid,
-  Flex,
-  Spacer,
   Icon,
-  useToast,
-  Badge,
-  Tooltip,
   Collapse,
-  List,
-  ListItem,
-  Spinner,
   Center,
-  Menu,
-  MenuButton,
-  MenuList,
-  MenuItem,
-  Tag,
-  TagLabel,
+  useToast,
 } from '@chakra-ui/react';
-import { Search, X, Plus, ChevronDown, ChevronUp, Settings, Monitor, Trash2, RefreshCw, Wifi, AlertCircle } from 'lucide-react';
+import { AlertCircle } from 'lucide-react';
 
 import { useRealtimeQuote } from './hooks';
 import { getFullCode } from './hooks/utils';
-import QuoteTile from './components/QuoteTile';
+import {
+  QuoteTile,
+  FlexScreenHeader,
+  SearchPanel,
+  HotRecommendations,
+} from './components';
 import { logger } from '@utils/logger';
 import { getApiBase } from '@utils/apiConfig';
-import type { WatchlistItem, ConnectionStatus } from './types';
+import type {
+  WatchlistItem,
+  SearchResultItem,
+  SearchApiResponse,
+  ConnectionStatusInfo,
+} from './types';
+import { COLORS } from './styles';
+import {
+  STORAGE_KEY,
+  DEFAULT_WATCHLIST,
+  SEARCH_DEBOUNCE_MS,
+  SEARCH_LIMIT,
+  COLLAPSED_ITEMS_COUNT,
+} from './constants';
 import { GLASS_BLUR } from '@/constants/glassConfig';
 
-// 本地存储 key
-const STORAGE_KEY = 'flexscreen_watchlist';
-
-// 默认自选列表
-const DEFAULT_WATCHLIST: WatchlistItem[] = [
-  { code: '000001', name: '上证指数', isIndex: true },
-  { code: '399001', name: '深证成指', isIndex: true },
-  { code: '399006', name: '创业板指', isIndex: true },
-];
-
-// 热门推荐
-const HOT_RECOMMENDATIONS: WatchlistItem[] = [
-  { code: '000001', name: '上证指数', isIndex: true },
-  { code: '399001', name: '深证成指', isIndex: true },
-  { code: '399006', name: '创业板指', isIndex: true },
-  { code: '399300', name: '沪深300', isIndex: true },
-  { code: '600519', name: '贵州茅台', isIndex: false },
-  { code: '000858', name: '五粮液', isIndex: false },
-  { code: '300750', name: '宁德时代', isIndex: false },
-  { code: '002594', name: '比亚迪', isIndex: false },
-];
-
-/** 搜索结果项 */
-interface SearchResultItem {
-  stock_code: string;
-  stock_name: string;
-  isIndex?: boolean;
-  code?: string;
-  name?: string;
-}
-
-/** 搜索 API 响应 */
-interface SearchApiResponse {
-  success: boolean;
-  data?: SearchResultItem[];
-}
-
-/** 连接状态信息 */
-interface ConnectionStatusInfo {
-  color: string;
-  text: string;
-}
-
 /**
  * FlexScreen 组件
  */
@@ -109,18 +63,9 @@ const FlexScreen: React.FC = () => {
   const [isSearching, setIsSearching] = useState(false);
   const [showResults, setShowResults] = useState(false);
   // 面板状态
-  const [isCollapsed, setIsCollapsed] = useState(false);
+  const [isCollapsed, setIsCollapsed] = useState(true);
 
-  // 深色主题颜色 - 与 StockOverview 保持一致
-  const cardBg = 'rgba(255, 255, 255, 0.03)';
-  const borderColor = 'rgba(255, 255, 255, 0.08)';
-  const textColor = 'rgba(255, 255, 255, 0.95)';
-  const subTextColor = 'rgba(255, 255, 255, 0.6)';
-  const searchBg = 'rgba(255, 255, 255, 0.12)';  // 调亮搜索框背景
-  const hoverBg = 'rgba(255, 255, 255, 0.08)';
-  const accentColor = '#8b5cf6';
-
-  // 获取订阅的证券代码列表（带后缀，用于区分上证指数000001.SH和平安银行000001.SZ）
+  // 获取订阅的证券代码列表
   const subscribedCodes = useMemo(() => {
     return watchlist.map(item => getFullCode(item.code, item.isIndex));
   }, [watchlist]);
@@ -142,7 +87,6 @@ const FlexScreen: React.FC = () => {
     } catch (e) {
       logger.warn('FlexScreen', '加载自选列表失败', e);
     }
-    // 使用默认列表
     setWatchlist(DEFAULT_WATCHLIST);
   }, []);
 
@@ -167,7 +111,9 @@ const FlexScreen: React.FC = () => {
 
     setIsSearching(true);
     try {
-      const response = await fetch(`${getApiBase()}/api/stocks/search?q=${encodeURIComponent(query)}&limit=10`);
+      const response = await fetch(
+        `${getApiBase()}/api/stocks/search?q=${encodeURIComponent(query)}&limit=${SEARCH_LIMIT}`
+      );
       const data: SearchApiResponse = await response.json();
 
       if (data.success) {
@@ -188,7 +134,7 @@ const FlexScreen: React.FC = () => {
   useEffect(() => {
     const timer = setTimeout(() => {
       searchSecurities(searchQuery);
-    }, 300);
+    }, SEARCH_DEBOUNCE_MS);
     return () => clearTimeout(timer);
   }, [searchQuery, searchSecurities]);
 
@@ -197,13 +143,10 @@ const FlexScreen: React.FC = () => {
     (security: SearchResultItem | WatchlistItem): void => {
       const code = 'stock_code' in security ? security.stock_code : security.code;
       const name = 'stock_name' in security ? security.stock_name : security.name;
-      // 优先使用 API 返回的 isIndex 字段
       const isIndex = security.isIndex === true;
 
-      // 生成唯一标识（带后缀的完整代码）
       const fullCode = getFullCode(code, isIndex);
 
-      // 检查是否已存在（使用带后缀的代码比较，避免上证指数和平安银行冲突）
       if (watchlist.some(item => getFullCode(item.code, item.isIndex) === fullCode)) {
         toast({
           title: '已在自选列表中',
@@ -214,7 +157,6 @@ const FlexScreen: React.FC = () => {
         return;
       }
 
-      // 添加到列表
       setWatchlist(prev => [...prev, { code, name, isIndex }]);
 
       toast({
@@ -224,7 +166,6 @@ const FlexScreen: React.FC = () => {
         isClosable: true,
       });
 
-      // 清空搜索
       setSearchQuery('');
       setShowResults(false);
     },
@@ -259,7 +200,18 @@ const FlexScreen: React.FC = () => {
     });
   }, [toast]);
 
-  // 连接状态指示
+  // 切换折叠状态
+  const toggleCollapse = useCallback((): void => {
+    setIsCollapsed(prev => !prev);
+  }, []);
+
+  // 清空搜索
+  const clearSearch = useCallback((): void => {
+    setSearchQuery('');
+    setShowResults(false);
+  }, []);
+
+  // 连接状态
   const isAnyConnected = connected.SSE || connected.SZSE;
   const connectionStatus = useMemo((): ConnectionStatusInfo => {
     if (connected.SSE && connected.SZSE) {
@@ -274,248 +226,73 @@ const FlexScreen: React.FC = () => {
     return { color: 'red', text: '未连接' };
   }, [connected]);
 
+  // 显示的自选列表（收起时只显示前4个）
+  const displayedWatchlist = useMemo(() => {
+    return isCollapsed ? watchlist.slice(0, COLLAPSED_ITEMS_COUNT) : watchlist;
+  }, [isCollapsed, watchlist]);
+
   return (
     <Card
-      bg={cardBg}
+      bg={COLORS.cardBg}
       borderWidth="1px"
-      borderColor={borderColor}
+      borderColor={COLORS.border}
       backdropFilter={GLASS_BLUR.lg}
       borderRadius="16px"
     >
       <CardBody>
         {/* 头部 */}
-        <Flex align="center" mb={4}>
-          <HStack spacing={3}>
-            <Icon as={Monitor} boxSize={6} color={accentColor} />
-            <Heading size="md" color={textColor}>
-              灵活屏
-            </Heading>
-            <Tooltip label={connectionStatus.text}>
-              <Badge
-                colorScheme={connectionStatus.color}
-                variant="subtle"
-                display="flex"
-                alignItems="center"
-                gap={1}
-              >
-                <Icon as={Wifi} boxSize={3} />
-                {isAnyConnected ? '实时' : '离线'}
-              </Badge>
-            </Tooltip>
-          </HStack>
-          <Spacer />
-          <HStack spacing={2}>
-            {/* 操作菜单 */}
-            <Menu>
-              <MenuButton
-                as={IconButton}
-                icon={<Settings size={16} />}
-                size="sm"
-                variant="ghost"
-                color={subTextColor}
-                _hover={{ bg: hoverBg, color: textColor }}
-                aria-label="设置"
-              />
-              <MenuList bg="#1a1a2e" borderColor={borderColor}>
-                <MenuItem
-                  icon={<RefreshCw />}
-                  onClick={resetWatchlist}
-                  bg="transparent"
-                  color={textColor}
-                  _hover={{ bg: hoverBg }}
-                >
-                  重置为默认
-                </MenuItem>
-                <MenuItem
-                  icon={<Trash2 />}
-                  onClick={clearWatchlist}
-                  bg="transparent"
-                  color="red.400"
-                  _hover={{ bg: 'rgba(239, 68, 68, 0.1)' }}
-                >
-                  清空列表
-                </MenuItem>
-              </MenuList>
-            </Menu>
-            {/* 折叠按钮 */}
-            <IconButton
-              icon={isCollapsed ? <ChevronDown size={16} /> : <ChevronUp size={16} />}
-              size="sm"
-              variant="ghost"
-              color={subTextColor}
-              _hover={{ bg: hoverBg, color: textColor }}
-              onClick={() => setIsCollapsed(!isCollapsed)}
-              aria-label={isCollapsed ? '展开' : '收起'}
-            />
-          </HStack>
-        </Flex>
+        <FlexScreenHeader
+          connectionStatus={connectionStatus}
+          isAnyConnected={isAnyConnected}
+          isCollapsed={isCollapsed}
+          onToggleCollapse={toggleCollapse}
+          onClearWatchlist={clearWatchlist}
+          onResetWatchlist={resetWatchlist}
+        />
 
-        {/* 可折叠内容 */}
+        {/* 搜索框 - 仅展开时显示 */}
         <Collapse in={!isCollapsed} animateOpacity>
-          {/* 搜索框 */}
-          <Box position="relative" mb={4}>
-            <InputGroup size="md">
-              <InputLeftElement pointerEvents="none">
-                <Search size={16} color={subTextColor} />
-              </InputLeftElement>
-              <Input
-                placeholder="搜索股票/指数代码或名称..."
-                value={searchQuery}
-                onChange={e => setSearchQuery(e.target.value)}
-                bg={searchBg}
-                borderRadius="lg"
-                borderColor={borderColor}
-                color={textColor}
-                _placeholder={{ color: subTextColor }}
-                _hover={{ borderColor: accentColor }}
-                _focus={{
-                  borderColor: accentColor,
-                  boxShadow: `0 0 0 1px ${accentColor}`,
-                }}
-              />
-              {searchQuery && (
-                <InputRightElement>
-                  <IconButton
-                    size="sm"
-                    icon={<X size={16} />}
-                    variant="ghost"
-                    color={subTextColor}
-                    _hover={{ bg: hoverBg, color: textColor }}
-                    onClick={() => {
-                      setSearchQuery('');
-                      setShowResults(false);
-                    }}
-                    aria-label="清空"
-                  />
-                </InputRightElement>
-              )}
-            </InputGroup>
+          <SearchPanel
+            searchQuery={searchQuery}
+            onSearchQueryChange={setSearchQuery}
+            searchResults={searchResults}
+            isSearching={isSearching}
+            showResults={showResults}
+            onAddSecurity={addSecurity}
+            onClearSearch={clearSearch}
+          />
 
-            {/* 搜索结果下拉 */}
-            <Collapse in={showResults} animateOpacity>
-              <Box
-                position="absolute"
-                top="100%"
-                left={0}
-                right={0}
-                mt={1}
-                bg="#1a1a2e"
-                borderWidth="1px"
-                borderColor={borderColor}
-                borderRadius="lg"
-                boxShadow="0 8px 32px rgba(0, 0, 0, 0.5)"
-                maxH="300px"
-                overflowY="auto"
-                zIndex={10}
-              >
-                {isSearching ? (
-                  <Center p={4}>
-                    <Spinner size="sm" color={accentColor} />
-                  </Center>
-                ) : searchResults.length > 0 ? (
-                  <List spacing={0}>
-                    {searchResults.map((stock, index) => (
-                      <ListItem
-                        key={`${stock.stock_code}-${stock.isIndex ? 'index' : 'stock'}`}
-                        px={4}
-                        py={2}
-                        cursor="pointer"
-                        _hover={{ bg: hoverBg }}
-                        onClick={() => addSecurity(stock)}
-                        borderBottomWidth={index < searchResults.length - 1 ? '1px' : '0'}
-                        borderColor={borderColor}
-                      >
-                        <HStack justify="space-between">
-                          <VStack align="start" spacing={0}>
-                            <HStack spacing={2}>
-                              <Text fontWeight="medium" color={textColor}>
-                                {stock.stock_name}
-                              </Text>
-                              <Badge
-                                colorScheme={stock.isIndex ? 'purple' : 'blue'}
-                                fontSize="xs"
-                                variant="subtle"
-                              >
-                                {stock.isIndex ? '指数' : '股票'}
-                              </Badge>
-                            </HStack>
-                            <Text fontSize="xs" color={subTextColor}>
-                              {stock.stock_code}
-                            </Text>
-                          </VStack>
-                          <IconButton
-                            icon={<Plus size={16} />}
-                            size="xs"
-                            colorScheme="purple"
-                            variant="ghost"
-                            aria-label="添加"
-                          />
-                        </HStack>
-                      </ListItem>
-                    ))}
-                  </List>
-                ) : (
-                  <Center p={4}>
-                    <Text color={subTextColor} fontSize="sm">
-                      未找到相关证券
-                    </Text>
-                  </Center>
-                )}
-              </Box>
-            </Collapse>
-          </Box>
-
-          {/* 快捷添加 */}
+          {/* 热门推荐 - 仅展开且列表为空时显示 */}
           {watchlist.length === 0 && (
-            <Box mb={4}>
-              <Text fontSize="sm" color={subTextColor} mb={2}>
-                热门推荐（点击添加）
-              </Text>
-              <Flex flexWrap="wrap" gap={2}>
-                {HOT_RECOMMENDATIONS.map(item => (
-                  <Tag
-                    key={item.code}
-                    size="md"
-                    variant="outline"
-                    borderColor={accentColor}
-                    color={textColor}
-                    cursor="pointer"
-                    _hover={{ bg: 'rgba(139, 92, 246, 0.2)' }}
-                    onClick={() => addSecurity(item)}
-                  >
-                    <TagLabel>{item.name}</TagLabel>
-                  </Tag>
-                ))}
-              </Flex>
-            </Box>
-          )}
-
-          {/* 自选列表 */}
-          {watchlist.length > 0 ? (
-            <SimpleGrid columns={{ base: 1, md: 2, lg: 4 }} spacing={4}>
-              {watchlist.map(item => {
-                const fullCode = getFullCode(item.code, item.isIndex);
-                return (
-                  <QuoteTile
-                    key={fullCode}
-                    code={item.code}
-                    name={item.name}
-                    quote={quotes[fullCode] || {}}
-                    isIndex={item.isIndex}
-                    onRemove={removeSecurity}
-                  />
-                );
-              })}
-            </SimpleGrid>
-          ) : (
-            <Center py={8}>
-              <VStack spacing={3}>
-                <Icon as={AlertCircle} boxSize={10} color={subTextColor} />
-                <Text color={subTextColor}>自选列表为空，请搜索添加证券</Text>
-              </VStack>
-            </Center>
+            <HotRecommendations onAddSecurity={addSecurity} />
           )}
         </Collapse>
+
+        {/* 自选列表 */}
+        {watchlist.length > 0 ? (
+          <SimpleGrid columns={{ base: 1, md: 2, lg: 4 }} spacing={4}>
+            {displayedWatchlist.map(item => {
+              const fullCode = getFullCode(item.code, item.isIndex);
+              return (
+                <QuoteTile
+                  key={fullCode}
+                  code={item.code}
+                  name={item.name}
+                  quote={quotes[fullCode] || {}}
+                  isIndex={item.isIndex}
+                  onRemove={removeSecurity}
+                />
+              );
+            })}
+          </SimpleGrid>
+        ) : !isCollapsed ? (
+          <Center py={8}>
+            <VStack spacing={3}>
+              <Icon as={AlertCircle} boxSize={10} color={COLORS.subText} />
+              <Text color={COLORS.subText}>自选列表为空，请搜索添加证券</Text>
+            </VStack>
+          </Center>
+        ) : null}
       </CardBody>
     </Card>
   );

src/views/StockOverview/components/FlexScreen/styles.ts

@@ -0,0 +1,78 @@
+/**
+ * FlexScreen 样式常量
+ */
+
+/** 颜色常量 - 与 StockOverview 保持一致 */
+export const COLORS = {
+  // 背景
+  cardBg: 'rgba(255, 255, 255, 0.03)',
+  searchBg: 'rgba(255, 255, 255, 0.12)',
+  hoverBg: 'rgba(255, 255, 255, 0.08)',
+  dropdownBg: '#1a1a2e',
+
+  // 边框
+  border: 'rgba(255, 255, 255, 0.08)',
+
+  // 文字
+  text: 'rgba(255, 255, 255, 0.95)',
+  subText: 'rgba(255, 255, 255, 0.6)',
+
+  // 主题色
+  accent: '#8b5cf6',
+  accentHover: 'rgba(139, 92, 246, 0.2)',
+
+  // 涨跌颜色
+  up: '#ff4d4d',
+  down: '#22c55e',
+} as const;
+
+/** 搜索输入框样式 */
+export const searchInputStyles = {
+  bg: COLORS.searchBg,
+  borderRadius: 'lg',
+  borderColor: COLORS.border,
+  color: COLORS.text,
+  _placeholder: { color: COLORS.subText },
+  _hover: { borderColor: COLORS.accent },
+  _focus: {
+    borderColor: COLORS.accent,
+    boxShadow: `0 0 0 1px ${COLORS.accent}`,
+  },
+} as const;
+
+/** 搜索结果下拉框样式 */
+export const searchDropdownStyles = {
+  position: 'absolute' as const,
+  top: '100%',
+  left: 0,
+  right: 0,
+  mt: 1,
+  bg: COLORS.dropdownBg,
+  borderWidth: '1px',
+  borderColor: COLORS.border,
+  borderRadius: 'lg',
+  boxShadow: '0 8px 32px rgba(0, 0, 0, 0.5)',
+  maxH: '300px',
+  overflowY: 'auto' as const,
+  zIndex: 10,
+} as const;
+
+/** 操作按钮样式 */
+export const actionButtonStyles = {
+  fontSize: 'xs',
+  color: COLORS.subText,
+  cursor: 'pointer',
+} as const;
+
+/** 折叠按钮样式 */
+export const collapseButtonStyles = {
+  size: 'sm' as const,
+  variant: 'outline' as const,
+  color: COLORS.subText,
+  borderColor: COLORS.border,
+  _hover: {
+    bg: COLORS.hoverBg,
+    color: COLORS.text,
+    borderColor: COLORS.accent,
+  },
+} as const;

src/views/StockOverview/components/FlexScreen/types.ts

@@ -373,3 +373,54 @@ export interface UseRealtimeQuoteReturn {
   /** 获取单只股票快照 (仅深交所) */
   getSnapshot: (code: string) => void;
 }
+
+// ==================== 搜索相关类型 ====================
+
+/** 搜索结果项 */
+export interface SearchResultItem {
+  stock_code: string;
+  stock_name: string;
+  isIndex?: boolean;
+  code?: string;
+  name?: string;
+}
+
+/** 搜索 API 响应 */
+export interface SearchApiResponse {
+  success: boolean;
+  data?: SearchResultItem[];
+}
+
+/** 连接状态信息 */
+export interface ConnectionStatusInfo {
+  color: string;
+  text: string;
+}
+
+// ==================== 子组件 Props 类型 ====================
+
+/** FlexScreenHeader Props */
+export interface FlexScreenHeaderProps {
+  connectionStatus: ConnectionStatusInfo;
+  isAnyConnected: boolean;
+  isCollapsed: boolean;
+  onToggleCollapse: () => void;
+  onClearWatchlist: () => void;
+  onResetWatchlist: () => void;
+}
+
+/** SearchPanel Props */
+export interface SearchPanelProps {
+  searchQuery: string;
+  onSearchQueryChange: (query: string) => void;
+  searchResults: SearchResultItem[];
+  isSearching: boolean;
+  showResults: boolean;
+  onAddSecurity: (security: SearchResultItem) => void;
+  onClearSearch: () => void;
+}
+
+/** HotRecommendations Props */
+export interface HotRecommendationsProps {
+  onAddSecurity: (item: WatchlistItem) => void;
+}