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/es/hooks/use-modal/index.mjs

@@ -0,0 +1,24 @@
+import { EVENT_CODE } from "../../constants/aria.mjs";
+import { getEventCode } from "../../utils/dom/event.mjs";
+import { isClient, useEventListener } from "@vueuse/core";
+import { watch } from "vue";
+//#region ../../packages/hooks/use-modal/index.ts
+const modalStack = [];
+const closeModal = (e) => {
+	if (modalStack.length === 0) return;
+	if (getEventCode(e) === EVENT_CODE.esc) {
+		e.stopPropagation();
+		modalStack[modalStack.length - 1].handleClose();
+	}
+};
+const useModal = (instance, visibleRef) => {
+	watch(visibleRef, (val) => {
+		if (val) modalStack.push(instance);
+		else modalStack.splice(modalStack.indexOf(instance), 1);
+	});
+};
+if (isClient) useEventListener(document, "keydown", closeModal);
+//#endregion
+export { useModal };
+
+//# sourceMappingURL=index.mjs.map