认证页 axe a11y 审计+修复：7 处布局级真实违规全修，复扫验证 dashboard/admin/system 归零；基准 total_issues 保持 8 不变（纯质量收益）

Result: {"status":"keep","total_issues":8,"eslint_errors":0,"eslint_problems":0,"eslint_warnings":0,"golint_canonicalheader":0,"golint_errname":0,"golint_errorlint":1,"golint_exhaustive":0,"golint_forcetypeassert":0,"golint_gosec":0,"golint_intrange":0,"golint_modernize":3,"golint_nilnil":3,"golint_perfsprint":0,"golint_prealloc":0,"golint_recvcheck":1,"golint_test_testifylint":0,"golint_test_thelper":0,"golint_test_total":0,"golint_test_usetesting":0,"golint_total":8,"golint_usestdlibvars":0,"golint_vetx_total":0,"golint_wastedassign":0,"measure_s":93,"tsc_errors":0,"vitest_failed":0,"vitest_total":126}

frontend/app/(main)/admin/system/page.tsx

@@ -8,10 +8,9 @@ import {
   ManageDetailPanel,
   ManagePage,
 } from '@/components/common/general/manage-pannel';
-import { Tabs, TabsList, TabsTrigger } from '@/components/ui/tabs';
 import { ShieldCheck } from 'lucide-react';
 
-import { formatDateTime } from '@/lib/utils';
+import { cn, formatDateTime } from '@/lib/utils';
 import type { SystemConfig } from '@/lib/services/admin';
 import { AdminProvider, useAdmin } from '@/contexts/admin-context';
 
@@ -255,20 +254,28 @@ export function SystemConfigs() {
       emptyDescription={t('emptyDescription')}
       loadingDescription={t('loadingDescription')}
       headerExtra={
-        <Tabs
-          value={activeTab}
-          onValueChange={(val) => setActiveTab(val as 'system' | 'business')}
-          className='w-[180px]'
+        <div
+          role='group'
+          aria-label={t('configType')}
+          className='grid w-[180px] grid-cols-2 h-8 rounded-md border border-input bg-muted/40 p-0.5'
         >
-          <TabsList className='grid w-full grid-cols-2 h-8'>
-            <TabsTrigger value='business' className='text-[11px] h-7'>
-              {t('businessConfig')}
-            </TabsTrigger>
-            <TabsTrigger value='system' className='text-[11px] h-7'>
-              {t('systemConfig')}
-            </TabsTrigger>
-          </TabsList>
-        </Tabs>
+          {(['business', 'system'] as const).map((tab) => (
+            <button
+              key={tab}
+              type='button'
+              onClick={() => setActiveTab(tab)}
+              aria-pressed={activeTab === tab}
+              className={cn(
+                'h-full rounded-sm text-[11px] font-medium transition-colors',
+                activeTab === tab
+                  ? 'bg-background shadow-sm text-foreground'
+                  : 'text-muted-foreground hover:text-foreground'
+              )}
+            >
+              {tab === 'business' ? t('businessConfig') : t('systemConfig')}
+            </button>
+          ))}
+        </div>
       }
       columns={[
         {

frontend/app/(main)/admin/users/components/user-filter-bar.tsx

@@ -26,6 +26,7 @@ import { cn } from '@/lib/utils';
 
 export function UserFilterBar() {
   const t = useTranslations('admin.users');
+  const tCommon = useTranslations('common');
   const {
     total,
     loading,
@@ -223,6 +224,7 @@ export function UserFilterBar() {
           <Button
             variant='ghost'
             size='icon'
+            aria-label={tCommon('previousPage')}
             className='h-5.5 w-6 rounded-none rounded-l-md disabled:opacity-30'
             onClick={() => setPage(Math.max(1, page - 1))}
             disabled={page <= 1 || loading}
@@ -235,6 +237,7 @@ export function UserFilterBar() {
           <Button
             variant='ghost'
             size='icon'
+            aria-label={tCommon('nextPage')}
             className='h-5.5 w-6 rounded-none rounded-r-md disabled:opacity-30'
             onClick={() => setPage(Math.min(totalPages, page + 1))}
             disabled={page >= totalPages || loading}

frontend/app/(main)/components/dashboard/stat-cards.tsx

@@ -67,6 +67,7 @@ export function DashboardStatCards({
           </div>
           <Progress
             value={capacity.average_cpu_usage_percent}
+            aria-label={t('clusterCapacity')}
             className='h-1.5'
           />
           <p className='text-[10px] text-muted-foreground'>
@@ -95,7 +96,7 @@ export function DashboardStatCards({
               {t('onlineOf', { total: summary.total_nodes })}
             </span>
           </div>
-          <Progress value={onlineRate} className='h-1.5' />
+          <Progress value={onlineRate} aria-label={t('nodeOverview')} className='h-1.5' />
           <p className='text-[10px] text-muted-foreground flex flex-wrap items-center gap-x-3 gap-y-1'>
             <span className='inline-flex items-center gap-1'>
               <Users className='size-3' />

frontend/app/(main)/components/dashboard/world-stage.tsx

@@ -77,7 +77,7 @@ function SummaryMetric({
         {value}
       </span>
       {typeof progress === 'number' ? (
-        <Progress value={progress} className='h-1' />
+        <Progress value={progress} aria-label={label} className='h-1' />
       ) : null}
       <span className='truncate text-[10px] text-muted-foreground'>{hint}</span>
     </div>
@@ -109,7 +109,7 @@ function DetailMetric({
         <Icon className='size-3.5 shrink-0 text-muted-foreground' />
       </div>
       {typeof progress === 'number' ? (
-        <Progress value={progress} className='h-1' />
+        <Progress value={progress} aria-label={label} className='h-1' />
       ) : null}
       <p className='truncate text-[10px] text-muted-foreground'>{hint}</p>
     </div>