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/element-plus/lib/components/message-box/index.js

@@ -0,0 +1,20 @@
+Object.defineProperties(exports, {
+	__esModule: { value: true },
+	[Symbol.toStringTag]: { value: "Module" }
+});
+//#region ../../packages/components/message-box/index.ts
+const _MessageBox = require("./src/messageBox.js").default;
+_MessageBox.install = (app) => {
+	_MessageBox._context = app._context;
+	app.config.globalProperties.$msgbox = _MessageBox;
+	app.config.globalProperties.$messageBox = _MessageBox;
+	app.config.globalProperties.$alert = _MessageBox.alert;
+	app.config.globalProperties.$confirm = _MessageBox.confirm;
+	app.config.globalProperties.$prompt = _MessageBox.prompt;
+};
+const ElMessageBox = _MessageBox;
+//#endregion
+exports.ElMessageBox = ElMessageBox;
+exports.default = _MessageBox;
+
+//# sourceMappingURL=index.js.map