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/es/hooks/use-delayed-toggle/index.d.ts

@@ -0,0 +1,47 @@
+import { EpPropFinalized } from "../../utils/vue/props/types.js";
+import { ToRefs } from "vue";
+
+//#region ../../packages/hooks/use-delayed-toggle/index.d.ts
+interface UseDelayedToggleProps {
+  /**
+   * @description delay of appearance, in millisecond, not valid in controlled mode
+   */
+  showAfter?: number;
+  /**
+   * @description delay of disappear, in millisecond, not valid in controlled mode
+   */
+  hideAfter?: number;
+  /**
+   * @description disappear automatically, in millisecond, not valid in controlled mode
+   */
+  autoClose?: number;
+}
+/**
+ * @deprecated Removed after 3.0.0, Use `UseDelayedToggleProps` instead.
+ */
+declare const useDelayedToggleProps: {
+  readonly showAfter: EpPropFinalized<NumberConstructor, unknown, unknown, 0, boolean>;
+  readonly hideAfter: EpPropFinalized<NumberConstructor, unknown, unknown, 200, boolean>;
+  readonly autoClose: EpPropFinalized<NumberConstructor, unknown, unknown, 0, boolean>;
+};
+type DelayedToggle = {
+  open: (event?: Event) => void;
+  close: (event?: Event) => void;
+} & ToRefs<Required<UseDelayedToggleProps>>;
+declare const useDelayedTogglePropsDefaults: {
+  readonly showAfter: 0;
+  readonly hideAfter: 200;
+  readonly autoClose: 0;
+};
+declare const useDelayedToggle: ({
+  showAfter,
+  hideAfter,
+  autoClose,
+  open,
+  close
+}: DelayedToggle) => {
+  onOpen: (event?: Event, delay?: number) => void;
+  onClose: (event?: Event, delay?: number) => void;
+};
+//#endregion
+export { DelayedToggle, UseDelayedToggleProps, useDelayedToggle, useDelayedToggleProps, useDelayedTogglePropsDefaults };