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/localizedFormat/index.d.ts

@@ -0,0 +1,4 @@
+import { PluginFunc } from 'dayjs/esm'
+
+declare const plugin: PluginFunc
+export = plugin

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

@@ -0,0 +1,20 @@
+import { FORMAT_DEFAULT } from '../../constant';
+import { u, englishFormats } from './utils';
+export default (function (o, c, d) {
+  var proto = c.prototype;
+  var oldFormat = proto.format;
+  d.en.formats = englishFormats;
+
+  proto.format = function (formatStr) {
+    if (formatStr === void 0) {
+      formatStr = FORMAT_DEFAULT;
+    }
+
+    var _this$$locale = this.$locale(),
+        _this$$locale$formats = _this$$locale.formats,
+        formats = _this$$locale$formats === void 0 ? {} : _this$$locale$formats;
+
+    var result = u(formatStr, formats);
+    return oldFormat.call(this, result);
+  };
+});

frontend/node_modules/dayjs/esm/plugin/localizedFormat/utils.js

@@ -0,0 +1,20 @@
+// eslint-disable-next-line import/prefer-default-export
+export var t = function t(format) {
+  return format.replace(/(\[[^\]]+])|(MMMM|MM|DD|dddd)/g, function (_, a, b) {
+    return a || b.slice(1);
+  });
+};
+export var englishFormats = {
+  LTS: 'h:mm:ss A',
+  LT: 'h:mm A',
+  L: 'MM/DD/YYYY',
+  LL: 'MMMM D, YYYY',
+  LLL: 'MMMM D, YYYY h:mm A',
+  LLLL: 'dddd, MMMM D, YYYY h:mm A'
+};
+export var u = function u(formatStr, formats) {
+  return formatStr.replace(/(\[[^\]]+])|(LTS?|l{1,4}|L{1,4})/g, function (_, a, b) {
+    var B = b && b.toUpperCase();
+    return a || formats[b] || englishFormats[b] || t(formats[B]);
+  });
+};