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-intermediate-render/index.d.ts

@@ -0,0 +1,23 @@
+import { Ref } from "vue";
+
+//#region ../../packages/hooks/use-intermediate-render/index.d.ts
+type UseDelayedRenderProps = {
+  indicator: Ref<boolean>;
+  intermediateIndicator: Ref<boolean>;
+  shouldSetIntermediate?: (step: 'show' | 'hide') => boolean;
+  beforeShow?: () => void;
+  beforeHide?: () => void;
+  afterShow?: () => void;
+  afterHide?: () => void;
+};
+declare const useDelayedRender: ({
+  indicator,
+  intermediateIndicator,
+  shouldSetIntermediate,
+  beforeShow,
+  afterShow,
+  afterHide,
+  beforeHide
+}: UseDelayedRenderProps) => void;
+//#endregion
+export { UseDelayedRenderProps, useDelayedRender };