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/esm/plugin/localeData/index.d.ts

@@ -0,0 +1,44 @@
+import { PluginFunc } from 'dayjs/esm'
+
+declare const plugin: PluginFunc
+export = plugin
+
+declare module 'dayjs/esm' {
+  type WeekdayNames = [string, string, string, string, string, string, string];
+  type MonthNames = [string, string, string, string, string, string, string, string, string, string, string, string];
+
+  interface InstanceLocaleDataReturn {
+    firstDayOfWeek(): number;
+    weekdays(instance?: Dayjs): WeekdayNames;
+    weekdaysShort(instance?: Dayjs): WeekdayNames;
+    weekdaysMin(instance?: Dayjs): WeekdayNames;
+    months(instance?: Dayjs): MonthNames;
+    monthsShort(instance?: Dayjs): MonthNames;
+    longDateFormat(format: string): string;
+    meridiem(hour?: number, minute?: number, isLower?: boolean): string;
+    ordinal(n: number): string
+  }
+
+  interface GlobalLocaleDataReturn {
+    firstDayOfWeek(): number;
+    weekdays(): WeekdayNames;
+    weekdaysShort(): WeekdayNames;
+    weekdaysMin(): WeekdayNames;
+    months(): MonthNames;
+    monthsShort(): MonthNames;
+    longDateFormat(format: string): string;
+    meridiem(hour?: number, minute?: number, isLower?: boolean): string;
+    ordinal(n: number): string
+  }
+
+  interface Dayjs {
+    localeData(): InstanceLocaleDataReturn;
+  }
+
+  export function weekdays(localOrder?: boolean): WeekdayNames;
+  export function weekdaysShort(localOrder?: boolean): WeekdayNames;
+  export function weekdaysMin(localOrder?: boolean): WeekdayNames;
+  export function monthsShort(): MonthNames;
+  export function months(): MonthNames;
+  export function localeData(): GlobalLocaleDataReturn;
+}