feat: 添加Company 页面头部组件 CompanyHeader

index.js            # 组合导出
SearchBar.js        # 股票搜索栏
WatchlistButton.js  # 自选股按钮

src/views/Company/components/CompanyHeader/SearchBar.js

@@ -0,0 +1,59 @@
+// src/views/Company/components/CompanyHeader/SearchBar.js
+// 股票搜索栏组件
+
+import React from 'react';
+import {
+  HStack,
+  Input,
+  Button,
+  InputGroup,
+  InputLeftElement,
+} from '@chakra-ui/react';
+import { SearchIcon } from '@chakra-ui/icons';
+
+/**
+ * 股票搜索栏组件
+ *
+ * @param {Object} props
+ * @param {string} props.inputCode - 输入框当前值
+ * @param {Function} props.onInputChange - 输入变化回调
+ * @param {Function} props.onSearch - 搜索按钮点击回调
+ * @param {Function} props.onKeyPress - 键盘事件回调
+ */
+const SearchBar = ({
+  inputCode,
+  onInputChange,
+  onSearch,
+  onKeyPress,
+}) => {
+  return (
+    <HStack spacing={3}>
+      <InputGroup size="lg" maxW="300px">
+        <InputLeftElement pointerEvents="none">
+          <SearchIcon color="gray.400" />
+        </InputLeftElement>
+        <Input
+          placeholder="输入股票代码"
+          value={inputCode}
+          onChange={(e) => onInputChange(e.target.value)}
+          onKeyPress={onKeyPress}
+          borderRadius="md"
+          _focus={{
+            borderColor: 'blue.500',
+            boxShadow: '0 0 0 1px #3182ce',
+          }}
+        />
+      </InputGroup>
+      <Button
+        colorScheme="blue"
+        size="lg"
+        onClick={onSearch}
+        leftIcon={<SearchIcon />}
+      >
+        查询
+      </Button>
+    </HStack>
+  );
+};
+
+export default SearchBar;