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/@cesium/wasm-splats/package.json

@@ -0,0 +1,25 @@
+{
+  "name": "@cesium/wasm-splats",
+  "type": "module",
+  "collaborators": [
+    "Cesium GS, Inc. <https://cesium.com>"
+  ],
+  "description": "Contains high-performance algorithms used in the rendering of Gaussian Splats in CesiumJS.",
+  "version": "0.1.0-alpha.2",
+  "license": "Apache-2.0",
+  "repository": {
+    "type": "git",
+    "url": "https://github.com/CesiumGS/cesium-wasm-utils"
+  },
+  "files": [
+    "wasm_splats_bg.wasm",
+    "wasm_splats.js",
+    "wasm_splats.d.ts"
+  ],
+  "main": "wasm_splats.js",
+  "homepage": "https://cesium.com/cesiumjs/",
+  "types": "wasm_splats.d.ts",
+  "sideEffects": [
+    "./snippets/*"
+  ]
+}