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/tool/path.d.ts

@@ -0,0 +1,14 @@
+import Path, { PathProps } from '../graphic/Path';
+import { MatrixArray } from '../core/matrix';
+declare type SVGPathOption = Omit<PathProps, 'shape' | 'buildPath'>;
+declare class SVGPath extends Path {
+    applyTransform(m: MatrixArray): void;
+}
+export declare function createFromString(str: string, opts?: SVGPathOption): SVGPath;
+export declare function extendFromString(str: string, defaultOpts?: SVGPathOption): typeof SVGPath;
+export declare function mergePath(pathEls: Path[], opts: PathProps): Path<PathProps>;
+export declare function clonePath(sourcePath: Path, opts?: {
+    bakeTransform?: boolean;
+    toLocal?: boolean;
+}): Path<PathProps>;
+export {};