修复错题一直显示处理中：超时、自动刷新与状态更新。

frontend/src/components/WrongQuestionList.tsx

@@ -1,7 +1,9 @@
 import { DeleteOutlined } from '@ant-design/icons'
 import { Button, Popconfirm, Space, Tag, Typography, message } from 'antd'
+import { useEffect } from 'react'
 import { wrongQuestionApi } from '../api/client'
 import type { WrongQuestion } from '../types'
+import { isWrongQuestionProcessing, processingHint } from '../utils/wqProcessing'
 import { STATUS_LABELS } from '../types'
 import AuthenticatedImage from './AuthenticatedImage'
 import WrongQuestionDetail from '../pages/WrongQuestionDetail'
@@ -12,14 +14,15 @@ interface Props {
   onSelect: (id: string | null) => void
   onRefresh: () => void
   emptyText?: string
+  pollWhenProcessing?: boolean
 }
 
 function cardSummary(wq: WrongQuestion): { tone: 'error' | 'pending' | 'normal'; text: string } {
   if (wq.error_message) {
     return { tone: 'error', text: wq.error_message }
   }
-  if (wq.status === 'pending') {
-    return { tone: 'pending', text: '正在识别、标注并生成解题思路…' }
+  if (isWrongQuestionProcessing(wq)) {
+    return { tone: 'pending', text: processingHint(wq) }
   }
   return {
     tone: 'normal',
@@ -33,7 +36,16 @@ export default function WrongQuestionList({
   onSelect,
   onRefresh,
   emptyText = '暂无记录',
+  pollWhenProcessing = true,
 }: Props) {
+  const hasProcessing = pollWhenProcessing && items.some(isWrongQuestionProcessing)
+
+  useEffect(() => {
+    if (!hasProcessing) return
+    const timer = window.setInterval(() => onRefresh(), 4000)
+    return () => window.clearInterval(timer)
+  }, [hasProcessing, onRefresh])
+
   const handleDelete = async (id: string) => {
     try {
       await wrongQuestionApi.remove(id)
@@ -58,7 +70,7 @@ export default function WrongQuestionList({
                   <Space size={4} wrap>
                     <Typography.Text strong>{wq.subject_name}</Typography.Text>
                     {wq.category === 'olympiad' && <Tag color="gold">奥数</Tag>}
-                    <Tag color={wq.error_message || wq.status === 'failed' ? 'error' : wq.status === 'pending' ? 'processing' : 'default'}>
+                    <Tag color={wq.error_message || wq.status === 'failed' ? 'error' : isWrongQuestionProcessing(wq) ? 'processing' : 'default'}>
                       {wq.error_message ? '失败' : STATUS_LABELS[wq.status]}
                     </Tag>
                   </Space>