perf: 优化各 Tab 数据加载为按需请求

MarketDataView (股票行情):
- 初始只加载 summary + tradeData（2个接口）
- funding/bigDeal/unusual/pledge 数据在切换 Tab 时按需加载
- 新增 loadDataByType 方法支持懒加载

FinancialPanorama (财务全景):
- 初始只加载 stockInfo + metrics + comparison + mainBusiness（4个接口）
- 从9个接口优化到4个接口

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

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

src/views/StockOverview/index.js

@@ -56,7 +56,7 @@ import TradeDatePicker from '@components/TradeDatePicker';
 import HotspotOverview from './components/HotspotOverview';
 import FlexScreen from './components/FlexScreen';
 import { BsGraphUp, BsLightningFill } from 'react-icons/bs';
-import * as echarts from 'echarts';
+import { echarts } from '@lib/echarts';
 import { logger } from '../../utils/logger';
 import tradingDays from '../../data/tradingDays.json';
 import { useStockOverviewEvents } from './hooks/useStockOverviewEvents';