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/dayjs/plugin/isoWeek.d.ts

@@ -0,0 +1,27 @@
+import { PluginFunc, OpUnitType, ConfigType } from 'dayjs'
+
+declare const plugin: PluginFunc
+export = plugin
+
+type ISOUnitType = OpUnitType | 'isoWeek';
+
+declare module 'dayjs' {
+  interface Dayjs {
+    isoWeekYear(): number
+    isoWeek(): number
+    isoWeek(value: number): Dayjs
+
+    isoWeekday(): number
+    isoWeekday(value: number): Dayjs
+
+    startOf(unit: ISOUnitType): Dayjs
+
+    endOf(unit: ISOUnitType): Dayjs
+
+    isSame(date?: ConfigType, unit?: ISOUnitType): boolean
+
+    isBefore(date?: ConfigType, unit?: ISOUnitType): boolean
+
+    isAfter(date?: ConfigType, unit?: ISOUnitType): boolean
+  }
+}