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/updateLocale/index.d.ts

@@ -0,0 +1,8 @@
+import { PluginFunc } from 'dayjs/esm'
+
+declare const plugin: PluginFunc
+export = plugin
+
+declare module 'dayjs/esm' {
+  export function updateLocale(localeName: string, customConfig: Record<string, unknown>): Record<string, unknown>
+}

frontend/node_modules/dayjs/esm/plugin/updateLocale/index.js

@@ -0,0 +1,18 @@
+function _extends() { _extends = Object.assign || function (target) { for (var i = 1; i < arguments.length; i++) { var source = arguments[i]; for (var key in source) { if (Object.prototype.hasOwnProperty.call(source, key)) { target[key] = source[key]; } } } return target; }; return _extends.apply(this, arguments); }
+
+export default (function (option, Dayjs, dayjs) {
+  dayjs.updateLocale = function (locale, customConfig) {
+    var localeList = dayjs.Ls;
+    var localeConfig = localeList[locale];
+    if (!localeConfig) return;
+    var customConfigKeys = customConfig ? Object.keys(customConfig) : [];
+    customConfigKeys.forEach(function (c) {
+      if (localeConfig[c] && customConfig[c] && typeof localeConfig[c] === 'object' && typeof customConfig[c] === 'object' && !Array.isArray(localeConfig[c])) {
+        localeConfig[c] = _extends({}, localeConfig[c], customConfig[c]);
+      } else {
+        localeConfig[c] = customConfig[c];
+      }
+    });
+    return localeConfig; // eslint-disable-line consistent-return
+  };
+});