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/_virtual/_plugin-vue_export-helper.js

@@ -0,0 +1,8 @@
+//#region \0plugin-vue:export-helper
+var _plugin_vue_export_helper_default = (sfc, props) => {
+	const target = sfc.__vccOpts || sfc;
+	for (const [key, val] of props) target[key] = val;
+	return target;
+};
+//#endregion
+exports.default = _plugin_vue_export_helper_default;

frontend/node_modules/element-plus/lib/_virtual/_rolldown/runtime.js

@@ -0,0 +1,23 @@
+//#region \0rolldown/runtime.js
+var __create = Object.create;
+var __defProp = Object.defineProperty;
+var __getOwnPropDesc = Object.getOwnPropertyDescriptor;
+var __getOwnPropNames = Object.getOwnPropertyNames;
+var __getProtoOf = Object.getPrototypeOf;
+var __hasOwnProp = Object.prototype.hasOwnProperty;
+var __copyProps = (to, from, except, desc) => {
+	if (from && typeof from === "object" || typeof from === "function") for (var keys = __getOwnPropNames(from), i = 0, n = keys.length, key; i < n; i++) {
+		key = keys[i];
+		if (!__hasOwnProp.call(to, key) && key !== except) __defProp(to, key, {
+			get: ((k) => from[k]).bind(null, key),
+			enumerable: !(desc = __getOwnPropDesc(from, key)) || desc.enumerable
+		});
+	}
+	return to;
+};
+var __toESM = (mod, isNodeMode, target) => (target = mod != null ? __create(__getProtoOf(mod)) : {}, __copyProps(isNodeMode || !mod || !mod.__esModule ? __defProp(target, "default", {
+	value: mod,
+	enumerable: true
+}) : target, mod));
+//#endregion
+exports.__toESM = __toESM;