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/ktx-parse/dist/create-default-container.d.ts

@@ -0,0 +1,8 @@
+import type { KTX2Container } from './container.js';
+/**
+ * Creates a 'default' {@link KTX2Container} object, initialized with common
+ * configuration wfor BT709 primaries and sRGB transfer, without pixel data.
+ * There's nothing particularly special about the 'default' container; creating
+ * the KTX2Container object explicitly is also fine.
+ */
+export declare function createDefaultContainer(): KTX2Container;