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/preParsePostFormat/index.d.ts

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

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

@@ -0,0 +1,40 @@
+// Plugin template from https://day.js.org/docs/en/plugin/plugin
+export default (function (option, dayjsClass) {
+  var oldParse = dayjsClass.prototype.parse;
+
+  dayjsClass.prototype.parse = function (cfg) {
+    if (typeof cfg.date === 'string') {
+      var locale = this.$locale();
+      cfg.date = locale && locale.preparse ? locale.preparse(cfg.date) : cfg.date;
+    } // original parse result
+
+
+    return oldParse.bind(this)(cfg);
+  }; // // overriding existing API
+  // // e.g. extend dayjs().format()
+
+
+  var oldFormat = dayjsClass.prototype.format;
+
+  dayjsClass.prototype.format = function () {
+    for (var _len = arguments.length, args = new Array(_len), _key = 0; _key < _len; _key++) {
+      args[_key] = arguments[_key];
+    }
+
+    // original format result
+    var result = oldFormat.call.apply(oldFormat, [this].concat(args)); // return modified result
+
+    var locale = this.$locale();
+    return locale && locale.postformat ? locale.postformat(result) : result;
+  };
+
+  var oldFromTo = dayjsClass.prototype.fromToBase;
+
+  if (oldFromTo) {
+    dayjsClass.prototype.fromToBase = function (input, withoutSuffix, instance, isFrom) {
+      var locale = this.$locale() || instance.$locale(); // original format result
+
+      return oldFromTo.call(this, input, withoutSuffix, instance, isFrom, locale && locale.postformat);
+    };
+  }
+});