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/pako/index.js

@@ -0,0 +1,18 @@
+// Top level file is just a mixin of submodules & constants
+'use strict';
+
+const { Deflate, deflate, deflateRaw, gzip } = require('./lib/deflate');
+
+const { Inflate, inflate, inflateRaw, ungzip } = require('./lib/inflate');
+
+const constants = require('./lib/zlib/constants');
+
+module.exports.Deflate = Deflate;
+module.exports.deflate = deflate;
+module.exports.deflateRaw = deflateRaw;
+module.exports.gzip = gzip;
+module.exports.Inflate = Inflate;
+module.exports.inflate = inflate;
+module.exports.inflateRaw = inflateRaw;
+module.exports.ungzip = ungzip;
+module.exports.constants = constants;