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/zrender/lib/svg-legacy/helper/ClippathManager.d.ts

@@ -0,0 +1,15 @@
+import Definable from './Definable';
+import Displayable from '../../graphic/Displayable';
+import Path from '../../graphic/Path';
+export declare function hasClipPath(displayable: Displayable): boolean;
+export default class ClippathManager extends Definable {
+    private _refGroups;
+    private _keyDuplicateCount;
+    constructor(zrId: number, svgRoot: SVGElement);
+    markAllUnused(): void;
+    private _getClipPathGroup;
+    update(displayable: Displayable, prevDisplayable: Displayable): SVGElement;
+    updateDom(parentEl: SVGElement, clipPaths: Path[]): void;
+    markUsed(displayable: Displayable): void;
+    removeUnused(): void;
+}