refactor: BasicInfoTab 拆分为 TypeScript 模块化组件

- 删除旧的 BasicInfoTab.js (~1000行)
- 新建 BasicInfoTab/ 目录，拆分为 10 个 TypeScript 文件:
  - index.tsx: 主组件（可配置 Tab）
  - config.ts: Tab 配置 + 黑金主题
  - utils.ts: 格式化工具函数
  - components/: 5 个面板组件 + LoadingState
- 主组件支持 enabledTabs、defaultTabIndex、onTabChange
- 应用黑金主题，支持懒加载 (isLazy)
- 更新 types.ts 添加 ActualControl、Concentration 等类型字段

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

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

src/views/Company/components/CompanyOverview/BasicInfoTab/index.tsx

@@ -0,0 +1,145 @@
+// src/views/Company/components/CompanyOverview/BasicInfoTab/index.tsx
+// 基本信息 Tab 组件 - 可配置版本（黑金主题）
+
+import React from "react";
+import {
+  Card,
+  CardBody,
+  Tabs,
+  TabList,
+  TabPanels,
+  Tab,
+  TabPanel,
+  Icon,
+  HStack,
+  Text,
+} from "@chakra-ui/react";
+
+import { THEME, TAB_CONFIG, getEnabledTabs, type TabConfig } from "./config";
+import {
+  ShareholderPanel,
+  ManagementPanel,
+  AnnouncementsPanel,
+  BranchesPanel,
+  BusinessInfoPanel,
+} from "./components";
+
+// Props 类型定义
+export interface BasicInfoTabProps {
+  stockCode: string;
+  basicInfo?: any;
+
+  // 可配置项
+  enabledTabs?: string[];        // 指定显示哪些 Tab（通过 key）
+  defaultTabIndex?: number;      // 默认选中 Tab
+  onTabChange?: (index: number, tabKey: string) => void;
+}
+
+// Tab 组件映射
+const TAB_COMPONENTS: Record<string, React.FC<any>> = {
+  shareholder: ShareholderPanel,
+  management: ManagementPanel,
+  announcements: AnnouncementsPanel,
+  branches: BranchesPanel,
+  business: BusinessInfoPanel,
+};
+
+/**
+ * 基本信息 Tab 组件
+ *
+ * 特性：
+ * - 可配置显示哪些 Tab（enabledTabs）
+ * - 黑金主题
+ * - 懒加载（isLazy）
+ * - 支持 Tab 变更回调
+ */
+const BasicInfoTab: React.FC<BasicInfoTabProps> = ({
+  stockCode,
+  basicInfo,
+  enabledTabs,
+  defaultTabIndex = 0,
+  onTabChange,
+}) => {
+  // 获取启用的 Tab 配置
+  const tabs = getEnabledTabs(enabledTabs);
+
+  // 处理 Tab 变更
+  const handleTabChange = (index: number) => {
+    if (onTabChange && tabs[index]) {
+      onTabChange(index, tabs[index].key);
+    }
+  };
+
+  // 渲染单个 Tab 内容
+  const renderTabContent = (tab: TabConfig) => {
+    const Component = TAB_COMPONENTS[tab.key];
+    if (!Component) return null;
+
+    // business Tab 需要 basicInfo，其他需要 stockCode
+    if (tab.key === "business") {
+      return <Component basicInfo={basicInfo} />;
+    }
+    return <Component stockCode={stockCode} />;
+  };
+
+  return (
+    <Card bg={THEME.cardBg} shadow="md" border="1px solid" borderColor={THEME.border}>
+      <CardBody p={0}>
+        <Tabs
+          isLazy
+          variant="unstyled"
+          defaultIndex={defaultTabIndex}
+          onChange={handleTabChange}
+        >
+          <TabList
+            bg={THEME.bg}
+            borderBottom="1px solid"
+            borderColor={THEME.border}
+            px={4}
+            py={2}
+            flexWrap="wrap"
+            gap={2}
+          >
+            {tabs.map((tab) => (
+              <Tab
+                key={tab.key}
+                color={THEME.tabUnselected.color}
+                borderRadius="full"
+                px={4}
+                py={2}
+                fontSize="sm"
+                _selected={{
+                  bg: THEME.tabSelected.bg,
+                  color: THEME.tabSelected.color,
+                  fontWeight: "bold",
+                }}
+                _hover={{
+                  bg: THEME.tableHoverBg,
+                }}
+              >
+                <HStack spacing={2}>
+                  <Icon as={tab.icon} boxSize={4} />
+                  <Text>{tab.name}</Text>
+                </HStack>
+              </Tab>
+            ))}
+          </TabList>
+
+          <TabPanels p={4}>
+            {tabs.map((tab) => (
+              <TabPanel key={tab.key} p={0}>
+                {renderTabContent(tab)}
+              </TabPanel>
+            ))}
+          </TabPanels>
+        </Tabs>
+      </CardBody>
+    </Card>
+  );
+};
+
+export default BasicInfoTab;
+
+// 导出配置和工具，供外部使用
+export { THEME, TAB_CONFIG, getEnabledTabs } from "./config";
+export * from "./utils";