feat: 实现供水运营专题大屏BI可视化

- 新增OperationDashboard.vue全屏大屏组件
- 添加6个核心KPI指标卡片: 进水总量/出水总量/产销差率/营收额/平均水质/报警次数
- 实现6个ECharts图表: 供水趋势/水质分布/报警统计/管网空间/设备状态/营收分析
- 创建静态HTML版本operation-dashboard.html，使用CDN加载Vue3/ECharts/Element Plus
- 更新路由配置，添加/operation路径支持
- 修复nextTick导入问题，优化build脚本

🚧 开发者: bot_dev1
📝 任务: #38 [BI] 运营仪表盘 + 供水专题大屏

frontend/node_modules/element-plus/lib/components/menu/index.d.ts

@@ -0,0 +1,22 @@
+import { SFCWithInstall } from "../../utils/vue/typescript.js";
+import { MenuItemClicked, MenuItemRegistered, MenuProvider, SubMenuProvider } from "./src/types.js";
+import _default, { MenuEmits, MenuProps, MenuPropsPublic, menuEmits, menuProps } from "./src/menu.js";
+import { MenuItemEmits, MenuItemProps, MenuItemPropsPublic, menuItemEmits, menuItemProps } from "./src/menu-item.js";
+import _default$1 from "./src/menu-item.vue.js";
+import { MenuItemGroupProps, MenuItemGroupPropsPublic, menuItemGroupProps } from "./src/menu-item-group.js";
+import _default$2 from "./src/menu-item-group.vue.js";
+import _default$3, { SubMenuProps, SubMenuPropsPublic, subMenuProps } from "./src/sub-menu.js";
+import { MenuInstance, MenuItemGroupInstance, MenuItemInstance, SubMenuInstance } from "./src/instance.js";
+import { MENU_INJECTION_KEY, SUB_MENU_INJECTION_KEY } from "./src/tokens.js";
+
+//#region ../../packages/components/menu/index.d.ts
+declare const ElMenu: SFCWithInstall<typeof _default> & {
+  MenuItem: typeof _default$1;
+  MenuItemGroup: typeof _default$2;
+  SubMenu: typeof _default$3;
+};
+declare const ElMenuItem: SFCWithInstall<typeof _default$1>;
+declare const ElMenuItemGroup: SFCWithInstall<typeof _default$2>;
+declare const ElSubMenu: SFCWithInstall<typeof _default$3>;
+//#endregion
+export { ElMenu, ElMenu as default, ElMenuItem, ElMenuItemGroup, ElSubMenu, MENU_INJECTION_KEY, MenuEmits, MenuInstance, MenuItemClicked, MenuItemEmits, MenuItemGroupInstance, MenuItemGroupProps, MenuItemGroupPropsPublic, MenuItemInstance, MenuItemProps, MenuItemPropsPublic, MenuItemRegistered, MenuProps, MenuPropsPublic, MenuProvider, SUB_MENU_INJECTION_KEY, SubMenuInstance, SubMenuProps, SubMenuPropsPublic, SubMenuProvider, menuEmits, menuItemEmits, menuItemGroupProps, menuItemProps, menuProps, subMenuProps };