feat(admin,api,player): 赛事分组管理、盘口独立页与多语言展示优化

- 管理端按联赛展示单场，新增赛事/单场流程与列表展开状态保持

- 盘口赔率迁至独立页面，保存按钮仅在有修改时高亮

- API 新增联赛列表与子场查询，按 locale 返回队名并修复编译

- 波胆其它选项与促销标签等 i18n 补齐，文案更易懂

apps/admin/src/App.vue

@@ -299,4 +299,17 @@ body {
 
 .el-input-number .el-input__wrapper { background: #0d0d0d !important; }
 .el-date-editor .el-input__wrapper  { background: #0d0d0d !important; }
+.el-date-editor .el-input__inner { color: #fff !important; }
+.el-picker-panel {
+  background: #1c1c1c !important;
+  border-color: #333 !important;
+  color: #ddd !important;
+}
+.el-picker-panel__footer { background: #1c1c1c !important; border-top-color: #333 !important; }
+.el-date-picker__header-label,
+.el-date-table th,
+.el-date-table td .el-date-table-cell__text { color: #ccc !important; }
+.el-time-panel { background: #1c1c1c !important; border-color: #333 !important; }
+.el-time-spinner__item { color: #aaa !important; }
+.el-time-spinner__item.is-active:not(.is-disabled) { color: #fff !important; }
 </style>