feat(admin,player,api): 优胜冠军通用管理与界面精简

管理端新增冠军盘列表/编辑、展开懒加载与 ECharts 修复；各列表页去掉重复标题。玩家端支持多赛事冠军盘、分批加载与语言切换刷新。API 扩展 outright CRUD 与列表性能优化。

Co-authored-by: Cursor <cursoragent@cursor.com>

apps/admin/src/views/Agents.vue

@@ -224,11 +224,7 @@ function creditTypeLabel(type: string) {
 
 <template>
   <div class="admin-list-page">
-  <div class="page-header">
-    <div>
-      <h2 class="page-title">{{ t('page.agents.title') }}</h2>
-      <span class="page-desc">{{ t('page.agents.desc') }}</span>
-    </div>
+  <div class="page-toolbar">
     <el-button type="primary" @click="openCreate">{{ t('agent.create_btn') }}</el-button>
   </div>
 
@@ -489,14 +485,6 @@ function creditTypeLabel(type: string) {
 </template>
 
 <style scoped>
-.page-header {
-  display: flex;
-  align-items: flex-start;
-  justify-content: space-between;
-  margin-bottom: 20px;
-}
-.page-title { font-size: 20px; font-weight: 700; color: #e0e0e0; margin: 0 0 4px; }
-.page-desc { font-size: 13px; color: #666; }
 .filter-card { border-radius: 12px; }
 .data-card { border-radius: 12px; }
 .field-hint { font-size: 12px; color: #888; margin-top: 4px; }