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/normalize-wheel-es/README.md

@@ -0,0 +1,23 @@
+# Normalize Wheel
+Mouse wheel normalization across multiple multiple browsers.
+
+## Original source
+This code is extracted and from Facebook's [Fixed Data Table](https://github.com/facebook/fixed-data-table). Apart from import fixes, the code is unmodified.
+
+## Usage
+Just add it as an dependency in npm.
+
+You can use it as follows:
+
+```js
+import normalizeWheel from 'normalize-wheel-es';
+
+document.addEventListener('mousewheel', function (event) {
+    const normalized = normalizeWheel(event);
+
+    console.log(normalized.pixelX, normalized.pixelY);
+});
+```
+
+## License
+See the `LICENSE` file.