refactor: 提取 K 线图弹窗共享类型到 types.ts

- 新建 types.ts 存放 StockInfo 接口和图表常量
- KLineChartModal.tsx: 移除内联 StockInfo 定义，改为从 types 导入
- TimelineChartModal.tsx: 移除内联 StockInfo 定义，改为从 types 导入
- 减少代码重复，统一类型管理

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

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

src/components/StockChart/TimelineChartModal.tsx

@@ -21,14 +21,7 @@ import * as echarts from 'echarts';
 import dayjs from 'dayjs';
 import { klineDataCache, getCacheKey, fetchKlineData } from '@views/Community/components/StockDetailPanel/utils/klineDataCache';
 import { selectIsMobile } from '@store/slices/deviceSlice';
-
-/**
- * 股票信息
- */
-interface StockInfo {
-  stock_code: string;
-  stock_name?: string;
-}
+import { StockInfo } from './types';
 
 /**
  * TimelineChartModal 组件 Props