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/bitmap-sdf/package.json

@@ -0,0 +1,32 @@
+{
+  "name": "bitmap-sdf",
+  "version": "1.0.4",
+  "description": "Calculate SDF for image/bw-data/array",
+  "main": "index.js",
+  "devDependencies": {
+    "bubleify": "^0.7.0",
+    "enable-mobile": "^1.0.7"
+  },
+  "scripts": {
+    "test": "budo test",
+    "build": "browserify test.js -g bubleify | indexhtmlify | metadataify | github-cornerify > index.html"
+  },
+  "repository": {
+    "type": "git",
+    "url": "git+https://github.com/dfcreative/bitmap-sdf.git"
+  },
+  "keywords": [
+    "sdf",
+    "signed-distance",
+    "image-sdf",
+    "bitmap",
+    "bwdist",
+    "tiny-sdf"
+  ],
+  "author": "Dima Yv <dfcreative@gmail.com>",
+  "license": "MIT",
+  "bugs": {
+    "url": "https://github.com/dfcreative/bitmap-sdf/issues"
+  },
+  "homepage": "https://github.com/dfcreative/bitmap-sdf#readme"
+}