fix(types): 修复 ECharts 类型导出和组件类型冲突

- echarts.ts: 将 EChartsOption 改为 EChartsCoreOption 的类型别名
- FuiCorners: 移除 extends BoxProps，position 重命名为 corner
- KLineChartModal/TimelineChartModal/ConcentrationCard: 使用导入的 EChartsOption
- LoadingState: 新增骨架屏 variant 支持
- FinancialPanorama: 使用骨架屏加载状态
- useFinancialData/financialService: 优化数据获取逻辑
- Company/index: 简化组件结构

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

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

src/components/StockChart/KLineChartModal.tsx

@@ -3,7 +3,7 @@ import React, { useEffect, useRef, useState, useCallback } from 'react';
 import { createPortal } from 'react-dom';
 import { useSelector } from 'react-redux';
 import { echarts } from '@lib/echarts';
-import type { ECharts } from '@lib/echarts';
+import type { ECharts, EChartsOption } from '@lib/echarts';
 import dayjs from 'dayjs';
 import { stockService } from '@services/eventService';
 import { selectIsMobile } from '@store/slices/deviceSlice';
@@ -296,7 +296,7 @@ const KLineChartModal: React.FC<KLineChartModalProps> = ({
     }
 
     // 图表配置（H5 响应式）
-    const option: echarts.EChartsOption = {
+    const option: EChartsOption = {
       backgroundColor: '#1a1a1a',
       title: {
         text: `${stock?.stock_name || stock?.stock_code} - 日K线`,