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/lib/echarts.ts

@@ -0,0 +1,120 @@
+/**
+ * ECharts 按需导入配置
+ *
+ * 使用方式：
+ * import { echarts } from '@lib/echarts';
+ *
+ * 优势：
+ * - 减小打包体积（从 ~800KB 降至 ~200-300KB）
+ * - Tree-shaking 支持
+ * - 统一管理图表类型和组件
+ */
+
+// 核心模块
+import * as echarts from 'echarts/core';
+
+// 图表类型 - 按需导入
+import {
+  LineChart,
+  BarChart,
+  PieChart,
+  CandlestickChart,
+  ScatterChart,
+} from 'echarts/charts';
+
+// 组件 - 按需导入
+import {
+  TitleComponent,
+  TooltipComponent,
+  LegendComponent,
+  GridComponent,
+  DataZoomComponent,
+  ToolboxComponent,
+  MarkLineComponent,
+  MarkPointComponent,
+  MarkAreaComponent,
+  DatasetComponent,
+  TransformComponent,
+} from 'echarts/components';
+
+// 渲染器
+import { CanvasRenderer } from 'echarts/renderers';
+
+// 类型导出
+import type {
+  ECharts,
+  EChartsOption,
+  SetOptionOpts,
+  ComposeOption,
+} from 'echarts/core';
+
+import type {
+  LineSeriesOption,
+  BarSeriesOption,
+  PieSeriesOption,
+  CandlestickSeriesOption,
+  ScatterSeriesOption,
+} from 'echarts/charts';
+
+import type {
+  TitleComponentOption,
+  TooltipComponentOption,
+  LegendComponentOption,
+  GridComponentOption,
+  DataZoomComponentOption,
+  ToolboxComponentOption,
+  MarkLineComponentOption,
+  MarkPointComponentOption,
+  MarkAreaComponentOption,
+  DatasetComponentOption,
+} from 'echarts/components';
+
+// 注册必需的组件
+echarts.use([
+  // 图表类型
+  LineChart,
+  BarChart,
+  PieChart,
+  CandlestickChart,
+  ScatterChart,
+  // 组件
+  TitleComponent,
+  TooltipComponent,
+  LegendComponent,
+  GridComponent,
+  DataZoomComponent,
+  ToolboxComponent,
+  MarkLineComponent,
+  MarkPointComponent,
+  MarkAreaComponent,
+  DatasetComponent,
+  TransformComponent,
+  // 渲染器
+  CanvasRenderer,
+]);
+
+// 组合类型定义（用于 TypeScript 类型推断）
+export type ECOption = ComposeOption<
+  | LineSeriesOption
+  | BarSeriesOption
+  | PieSeriesOption
+  | CandlestickSeriesOption
+  | ScatterSeriesOption
+  | TitleComponentOption
+  | TooltipComponentOption
+  | LegendComponentOption
+  | GridComponentOption
+  | DataZoomComponentOption
+  | ToolboxComponentOption
+  | MarkLineComponentOption
+  | MarkPointComponentOption
+  | MarkAreaComponentOption
+  | DatasetComponentOption
+>;
+
+// 导出
+export { echarts };
+export type { ECharts, EChartsOption, SetOptionOpts };
+
+// 默认导出（兼容 import * as echarts from 'echarts' 的用法）
+export default echarts;