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/vue-demi/lib/v2.7/index.cjs

@@ -0,0 +1,60 @@
+var VueModule = require('vue')
+
+// get the real Vue https://github.com/vueuse/vue-demi/issues/192
+var Vue = VueModule.default || VueModule
+
+exports.Vue = Vue
+exports.Vue2 = Vue
+exports.isVue2 = true
+exports.isVue3 = false
+exports.install = function () {}
+exports.warn = Vue.util.warn
+
+// createApp polyfill
+exports.createApp = function (rootComponent, rootProps) {
+  var vm
+  var provide = {}
+  var app = {
+    config: Vue.config,
+    use: Vue.use.bind(Vue),
+    mixin: Vue.mixin.bind(Vue),
+    component: Vue.component.bind(Vue),
+    provide: function (key, value) {
+      provide[key] = value
+      return this
+    },
+    directive: function (name, dir) {
+      if (dir) {
+        Vue.directive(name, dir)
+        return app
+      } else {
+        return Vue.directive(name)
+      }
+    },
+    mount: function (el, hydrating) {
+      if (!vm) {
+        vm = new Vue(Object.assign({ propsData: rootProps }, rootComponent, { provide: Object.assign(provide, rootComponent.provide) }))
+        vm.$mount(el, hydrating)
+        return vm
+      } else {
+        return vm
+      }
+    },
+    unmount: function () {
+      if (vm) {
+        vm.$destroy()
+        vm = undefined
+      }
+    },
+  }
+  return app
+}
+
+Object.keys(VueModule).forEach(function (key) {
+  exports[key] = VueModule[key]
+})
+
+// Not implemented https://github.com/vuejs/core/pull/8111, falls back to getCurrentInstance()
+exports.hasInjectionContext = function() {
+  return !!VueModule.getCurrentInstance()
+}