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/axios/lib/platform/node/classes/FormData.js

@@ -0,0 +1,3 @@
+import FormData from 'form-data';
+
+export default FormData;

frontend/node_modules/axios/lib/platform/node/classes/URLSearchParams.js

@@ -0,0 +1,4 @@
+'use strict';
+
+import url from 'url';
+export default url.URLSearchParams;

frontend/node_modules/axios/lib/platform/node/index.js

@@ -0,0 +1,37 @@
+import crypto from 'crypto';
+import URLSearchParams from './classes/URLSearchParams.js';
+import FormData from './classes/FormData.js';
+
+const ALPHA = 'abcdefghijklmnopqrstuvwxyz';
+
+const DIGIT = '0123456789';
+
+const ALPHABET = {
+  DIGIT,
+  ALPHA,
+  ALPHA_DIGIT: ALPHA + ALPHA.toUpperCase() + DIGIT,
+};
+
+const generateString = (size = 16, alphabet = ALPHABET.ALPHA_DIGIT) => {
+  let str = '';
+  const { length } = alphabet;
+  const randomValues = new Uint32Array(size);
+  crypto.randomFillSync(randomValues);
+  for (let i = 0; i < size; i++) {
+    str += alphabet[randomValues[i] % length];
+  }
+
+  return str;
+};
+
+export default {
+  isNode: true,
+  classes: {
+    URLSearchParams,
+    FormData,
+    Blob: (typeof Blob !== 'undefined' && Blob) || null,
+  },
+  ALPHABET,
+  generateString,
+  protocols: ['http', 'https', 'file', 'data'],
+};