fix(SubTabContainer): 移除外层 Suspense，Tab 内容直接展示

- SubTabContainer 内部为每个 Tab 添加 Suspense fallback={null}
- 移除 Company/index.tsx 外层 Suspense 和 TabLoadingFallback
- 切换一级 Tab 时不再显示整体 loading，直接展示内容

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

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

src/views/Company/index.tsx

@@ -9,12 +9,12 @@
  * - HeroUI 现代组件风格
  */
 
-import React, { memo, useCallback, useRef, useEffect, Suspense } from 'react';
+import React, { memo, useCallback, useRef, useEffect } from 'react';
 
 // FUI 动画样式
 import './theme/fui-animations.css';
 import { useSearchParams } from 'react-router-dom';
-import { Box, Spinner, Center } from '@chakra-ui/react';
+import { Box } from '@chakra-ui/react';
 import SubTabContainer from '@components/SubTabContainer';
 import { useCompanyEvents } from './hooks/useCompanyEvents';
 import { useCompanyData } from './hooks/useCompanyData';
@@ -22,18 +22,6 @@ import CompanyHeader from './components/CompanyHeader';
 import StockQuoteCard from './components/StockQuoteCard';
 import { THEME, TAB_CONFIG } from './config';
 
-// ============================================
-// 加载状态组件
-// ============================================
-
-const TabLoadingFallback = memo(() => (
-  <Center py={20}>
-    <Spinner size="xl" color={THEME.gold} thickness="3px" />
-  </Center>
-));
-
-TabLoadingFallback.displayName = 'TabLoadingFallback';
-
 // ============================================
 // 主内容区组件 - FUI 风格
 // ============================================
@@ -121,16 +109,14 @@ const CompanyContent = memo<CompanyContentProps>(({
         opacity={0.6}
       />
 
-      <Suspense fallback={<TabLoadingFallback />}>
-        <SubTabContainer
-          tabs={TAB_CONFIG}
-          componentProps={{ stockCode }}
-          onTabChange={onTabChange}
-          themePreset="blackGold"
-          contentPadding={0}
-          isLazy={true}
-        />
-      </Suspense>
+      <SubTabContainer
+        tabs={TAB_CONFIG}
+        componentProps={{ stockCode }}
+        onTabChange={onTabChange}
+        themePreset="blackGold"
+        contentPadding={0}
+        isLazy={true}
+      />
     </Box>
   </Box>
 ));