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/dayjs/esm/locale/ss.js

@@ -0,0 +1,39 @@
+// siSwati [ss]
+import dayjs from '../index';
+var locale = {
+  name: 'ss',
+  weekdays: 'Lisontfo_Umsombuluko_Lesibili_Lesitsatfu_Lesine_Lesihlanu_Umgcibelo'.split('_'),
+  months: "Bhimbidvwane_Indlovana_Indlov'lenkhulu_Mabasa_Inkhwekhweti_Inhlaba_Kholwane_Ingci_Inyoni_Imphala_Lweti_Ingongoni".split('_'),
+  weekStart: 1,
+  weekdaysShort: 'Lis_Umb_Lsb_Les_Lsi_Lsh_Umg'.split('_'),
+  monthsShort: 'Bhi_Ina_Inu_Mab_Ink_Inh_Kho_Igc_Iny_Imp_Lwe_Igo'.split('_'),
+  weekdaysMin: 'Li_Us_Lb_Lt_Ls_Lh_Ug'.split('_'),
+  ordinal: function ordinal(n) {
+    return n;
+  },
+  formats: {
+    LT: 'h:mm A',
+    LTS: 'h:mm:ss A',
+    L: 'DD/MM/YYYY',
+    LL: 'D MMMM YYYY',
+    LLL: 'D MMMM YYYY h:mm A',
+    LLLL: 'dddd, D MMMM YYYY h:mm A'
+  },
+  relativeTime: {
+    future: 'nga %s',
+    past: 'wenteka nga %s',
+    s: 'emizuzwana lomcane',
+    m: 'umzuzu',
+    mm: '%d emizuzu',
+    h: 'lihora',
+    hh: '%d emahora',
+    d: 'lilanga',
+    dd: '%d emalanga',
+    M: 'inyanga',
+    MM: '%d tinyanga',
+    y: 'umnyaka',
+    yy: '%d iminyaka'
+  }
+};
+dayjs.locale(locale, null, true);
+export default locale;