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/weekOfYear/index.d.ts

@@ -0,0 +1,12 @@
+import { PluginFunc } from 'dayjs/esm'
+
+declare const plugin: PluginFunc
+export = plugin
+
+declare module 'dayjs/esm' {
+  interface Dayjs {
+    week(): number
+
+    week(value : number): Dayjs
+  }
+}

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

@@ -0,0 +1,44 @@
+import { MS, Y, D, W } from '../../constant';
+export default (function (o, c, d) {
+  var proto = c.prototype;
+
+  proto.week = function (week) {
+    if (week === void 0) {
+      week = null;
+    }
+
+    if (week !== null) {
+      return this.add((week - this.week()) * 7, D);
+    }
+
+    var yearStart = this.$locale().yearStart || 1;
+
+    if (this.month() === 11 && this.date() > 25) {
+      // d(this) is for badMutable
+      var nextYearStartDay = d(this).startOf(Y).add(1, Y).date(yearStart);
+      var thisEndOfWeek = d(this).endOf(W);
+
+      if (nextYearStartDay.isBefore(thisEndOfWeek)) {
+        return 1;
+      }
+    }
+
+    var yearStartDay = d(this).startOf(Y).date(yearStart);
+    var yearStartWeek = yearStartDay.startOf(W).subtract(1, MS);
+    var diffInWeek = this.diff(yearStartWeek, W, true);
+
+    if (diffInWeek < 0) {
+      return d(this).startOf('week').week();
+    }
+
+    return Math.ceil(diffInWeek);
+  };
+
+  proto.weeks = function (week) {
+    if (week === void 0) {
+      week = null;
+    }
+
+    return this.week(week);
+  };
+});