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-router/vue-router-auto-resolver.d.mts

@@ -0,0 +1,22 @@
+/**
+ * TODO: remove the declaration if possible when merging unplugin-vue-router into this monorepo
+ */
+
+declare module 'vue-router/auto-resolver' {
+  import type {
+    EXPERIMENTAL_Router,
+    EXPERIMENTAL_RouterOptions,
+  } from 'vue-router/experimental'
+
+  /**
+   * Handles HMR.
+   * Generated by unplugin-vue-router
+   */
+  export function handleHotUpdate(router: EXPERIMENTAL_Router): void
+
+  /**
+   * Custom resolver automatically generated at build time
+   * Generated by unplugin-vue-router
+   */
+  export const resolver: EXPERIMENTAL_RouterOptions['resolver']
+}