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-empty-values/index.mjs

@@ -0,0 +1,69 @@
+import { isArray, isFunction } from "../../utils/types.mjs";
+import { debugWarn } from "../../utils/error.mjs";
+import { buildProps, definePropType } from "../../utils/vue/props/runtime.mjs";
+import { isEqual } from "lodash-unified";
+import { computed, getCurrentInstance, inject, ref } from "vue";
+//#region ../../packages/hooks/use-empty-values/index.ts
+const emptyValuesContextKey = Symbol("emptyValuesContextKey");
+const SCOPE = "use-empty-values";
+const DEFAULT_EMPTY_VALUES = [
+	"",
+	void 0,
+	null
+];
+const DEFAULT_VALUE_ON_CLEAR = void 0;
+/**
+* @deprecated Removed after 3.0.0, Use `UseEmptyValuesProps` instead.
+*/
+const useEmptyValuesProps = buildProps({
+	/**
+	* @description empty values supported by the component
+	*/
+	emptyValues: Array,
+	/**
+	* @description return value when cleared, if you want to set `undefined`, use `() => undefined`
+	*/
+	valueOnClear: {
+		type: definePropType([
+			String,
+			Number,
+			Boolean,
+			Function
+		]),
+		default: void 0,
+		validator: (val) => {
+			val = isFunction(val) ? val() : val;
+			if (isArray(val)) return val.every((item) => !item);
+			return !val;
+		}
+	}
+});
+const useEmptyValues = (props, defaultValue) => {
+	const config = getCurrentInstance() ? inject(emptyValuesContextKey, ref({})) : ref({});
+	const emptyValues = computed(() => props.emptyValues || config.value.emptyValues || DEFAULT_EMPTY_VALUES);
+	const valueOnClear = computed(() => {
+		if (isFunction(props.valueOnClear)) return props.valueOnClear();
+		else if (props.valueOnClear !== void 0) return props.valueOnClear;
+		else if (isFunction(config.value.valueOnClear)) return config.value.valueOnClear();
+		else if (config.value.valueOnClear !== void 0) return config.value.valueOnClear;
+		return defaultValue !== void 0 ? defaultValue : void 0;
+	});
+	const isEmptyValue = (value) => {
+		let result = true;
+		if (isArray(value)) result = emptyValues.value.some((emptyValue) => {
+			return isEqual(value, emptyValue);
+		});
+		else result = emptyValues.value.includes(value);
+		return result;
+	};
+	if (!isEmptyValue(valueOnClear.value)) debugWarn(SCOPE, "value-on-clear should be a value of empty-values");
+	return {
+		emptyValues,
+		valueOnClear,
+		isEmptyValue
+	};
+};
+//#endregion
+export { DEFAULT_EMPTY_VALUES, DEFAULT_VALUE_ON_CLEAR, SCOPE, emptyValuesContextKey, useEmptyValues, useEmptyValuesProps };
+
+//# sourceMappingURL=index.mjs.map