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/dropdown/index.js

@@ -0,0 +1,32 @@
+Object.defineProperties(exports, {
+	__esModule: { value: true },
+	[Symbol.toStringTag]: { value: "Module" }
+});
+const require_install = require("../../utils/vue/install.js");
+const require_dropdown = require("./src/dropdown.js");
+const require_tokens = require("./src/tokens.js");
+const require_dropdown$1 = require("./src/dropdown2.js");
+const require_dropdown_item = require("./src/dropdown-item.js");
+const require_dropdown_menu = require("./src/dropdown-menu.js");
+//#region ../../packages/components/dropdown/index.ts
+const ElDropdown = require_install.withInstall(require_dropdown$1.default, {
+	DropdownItem: require_dropdown_item.default,
+	DropdownMenu: require_dropdown_menu.default
+});
+const ElDropdownItem = require_install.withNoopInstall(require_dropdown_item.default);
+const ElDropdownMenu = require_install.withNoopInstall(require_dropdown_menu.default);
+//#endregion
+exports.DROPDOWN_INJECTION_KEY = require_tokens.DROPDOWN_INJECTION_KEY;
+exports.DROPDOWN_INSTANCE_INJECTION_KEY = require_tokens.DROPDOWN_INSTANCE_INJECTION_KEY;
+exports.ElDropdown = ElDropdown;
+exports.default = ElDropdown;
+exports.ElDropdownItem = ElDropdownItem;
+exports.ElDropdownMenu = ElDropdownMenu;
+exports.FIRST_KEYS = require_dropdown.FIRST_KEYS;
+exports.FIRST_LAST_KEYS = require_dropdown.FIRST_LAST_KEYS;
+exports.LAST_KEYS = require_dropdown.LAST_KEYS;
+exports.dropdownItemProps = require_dropdown.dropdownItemProps;
+exports.dropdownMenuProps = require_dropdown.dropdownMenuProps;
+exports.dropdownProps = require_dropdown.dropdownProps;
+
+//# sourceMappingURL=index.js.map