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-locale/index.mjs

@@ -0,0 +1,22 @@
+import en_default from "../../locale/lang/en.mjs";
+import { get } from "lodash-unified";
+import { computed, inject, isRef, ref, unref } from "vue";
+//#region ../../packages/hooks/use-locale/index.ts
+const buildTranslator = (locale) => (path, option) => translate(path, option, unref(locale));
+const translate = (path, option, locale) => get(locale, path, path).replace(/\{(\w+)\}/g, (_, key) => `${option?.[key] ?? `{${key}}`}`);
+const buildLocaleContext = (locale) => {
+	return {
+		lang: computed(() => unref(locale).name),
+		locale: isRef(locale) ? locale : ref(locale),
+		t: buildTranslator(locale)
+	};
+};
+const localeContextKey = Symbol("localeContextKey");
+const useLocale = (localeOverrides) => {
+	const locale = localeOverrides || inject(localeContextKey, ref());
+	return buildLocaleContext(computed(() => locale.value || en_default));
+};
+//#endregion
+export { buildLocaleContext, buildTranslator, localeContextKey, translate, useLocale };
+
+//# sourceMappingURL=index.mjs.map