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/lerc/package.json

@@ -0,0 +1,39 @@
+{
+  "name": "lerc",
+  "browser": "LercDecode.js",
+  "bugs": {
+    "url": "https://github.com/esri/lerc/issues"
+  },
+  "description": "Rapid decoding of Lerc compressed raster data for any standard pixel type.",
+  "version": "2.0.0",
+  "author": "Esri <dev_tools@esri.com> (http://developers.arcgis.com)",
+  "contributors": [
+    "Johannes Schmid",
+    "Chayanika Khatua",
+    "Wenxue Ju"
+  ],
+  "devDependencies": {
+    "gh-release": "^2.2.1",
+    "jsdoc-to-markdown": "^2.0.1",
+    "jshint": "^2.9.4",
+    "uglify-js": "^2.7.5"
+  },
+  "files": [
+    "LercDecode.js",
+    "LercDecode.min.js"
+  ],
+  "homepage": "https://github.com/Esri/lerc",
+  "license": "Apache-2.0",
+  "main": "LercDecode.js",
+  "readmeFilename": "README.md",
+  "repository": {
+    "type": "git",
+    "url": "https://github.com/Esri/lerc.git"
+  },
+  "scripts": {
+    "lint": "jshint LercDecode.js",
+    "build": "uglifyjs LercDecode.js -o LercDecode.min.js --comments",
+    "docs": "jsdoc2md --template README.hbs --files LercDecode.js",
+    "release": "./release.sh"
+  }
+}