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/vue-demi/scripts/utils.js

@@ -0,0 +1,62 @@
+const fs = require('fs')
+const path = require('path')
+
+const dir = path.resolve(__dirname, '..', 'lib')
+
+function loadModule(name) {
+  try {
+    return require(name)
+  } catch (e) {
+    return undefined
+  }
+}
+
+function copy(name, version, vue) {
+  vue = vue || 'vue'
+  const src = path.join(dir, `v${version}`, name)
+  const dest = path.join(dir, name)
+  let content = fs.readFileSync(src, 'utf-8')
+  content = content.replace(/'vue'/g, `'${vue}'`)
+  // unlink for pnpm, #92
+  try {
+    fs.unlinkSync(dest)
+  } catch (error) { }
+  fs.writeFileSync(dest, content, 'utf-8')
+}
+
+function updateVue2API() {
+  const ignoreList = ['version', 'default']
+  const VCA = loadModule('@vue/composition-api')
+  if (!VCA) {
+    console.warn('[vue-demi] Composition API plugin is not found. Please run "npm install @vue/composition-api" to install.')
+    return
+  }
+
+  const exports = Object.keys(VCA).filter(i => !ignoreList.includes(i))
+
+  const esmPath = path.join(dir, 'index.mjs')
+  let content = fs.readFileSync(esmPath, 'utf-8')
+
+  content = content.replace(
+    /\/\*\*VCA-EXPORTS\*\*\/[\s\S]+\/\*\*VCA-EXPORTS\*\*\//m,
+`/**VCA-EXPORTS**/
+export { ${exports.join(', ')} } from '@vue/composition-api/dist/vue-composition-api.mjs'
+/**VCA-EXPORTS**/`
+    )
+
+  fs.writeFileSync(esmPath, content, 'utf-8')
+  
+}
+
+function switchVersion(version, vue) {
+  copy('index.cjs', version, vue)
+  copy('index.mjs', version, vue)
+  copy('index.d.ts', version, vue)
+
+  if (version === 2)
+    updateVue2API()
+}
+
+
+module.exports.loadModule = loadModule
+module.exports.switchVersion = switchVersion