fix(server): 赛事包导出传入项目名，修复 GET /api/export/project.zip 恒 500

web/src/admin/layouts/AdminLayout.vue

@@ -50,6 +50,7 @@ const NAV: NavGroup[] = [
   { section: '系统', items: [
     { name: 'system', label: '系统设置', icon: 'system' },
     { name: 'password', label: '修改密码', icon: 'lock' },
+    { name: 'about', label: '关于', icon: 'info' },
   ] },
 ]
 
@@ -104,7 +105,7 @@ onMounted(async () => {
   <div class="mx-app admin-shell">
     <aside class="mx-sidebar" :class="{ open: sidebarOpen }">
       <div class="mx-logo brand">
-        <span class="mx-logo-icon"><MxIcon name="standings" :size="18" /></span>
+        <img class="app-icon" src="/scoreboard.png" alt="" width="28" height="28" />
         <span class="mx-logo-text">积分榜管理</span>
       </div>