feat: 小程序前端显示分类标签

各页面增加垃圾信息分类标签显示：
- 检测结果页显示分类标签
- 批量识别页和CSV导出增加分类标签列
- 历史记录页显示分类标签
- 管理后台审核页显示分类标签

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

miniprogram/pages/batch/index.js

@@ -85,9 +85,10 @@ Page({
     const items = this.data.items
     if (!items.length) return ''
 
-    const headers = ['文本', '判定结果', '置信度', '垃圾概率', '正常概率', '风险关键词']
+    const headers = ['文本', '判定结果', '分类标签', '置信度', '垃圾概率', '正常概率', '风险关键词']
     const rows = items.map((item) => {
       const prediction = item.prediction === 'spam' ? '垃圾信息' : '正常信息'
+      const categoryLabel = item.category_label || ''
       const confidence = item.confidence_text || '0%'
       const spamProb = this.formatPercent(item.spam_probability, 4)
       const hamProb = this.formatPercent(item.ham_probability, 4)
@@ -95,7 +96,7 @@ Page({
       // CSV 转义：文本中的逗号和换行需要处理
       const text = (item.text || '').replace(/"/g, '""')
       const tokensEscaped = tokens.replace(/"/g, '""')
-      return `"${text}","${prediction}","${confidence}","${spamProb}","${hamProb}","${tokensEscaped}"`
+      return `"${text}","${prediction}","${categoryLabel}","${confidence}","${spamProb}","${hamProb}","${tokensEscaped}"`
     })
 
     return [headers.join(','), ...rows].join('\n')

miniprogram/pages/batch/index.wxml

@@ -66,6 +66,10 @@
         <text class="label">判定结果</text>
         <text class="{{item.prediction === 'spam' ? 'status-spam' : 'status-ham'}}">{{item.prediction_text}}</text>
       </view>
+      <view class="row" wx:if="{{item.category_label}}">
+        <text class="label">分类标签</text>
+        <text class="status-spam">{{item.category_label}}</text>
+      </view>
       <view class="row">
         <text class="label">置信度</text>
         <text class="value">{{item.confidence_text}}</text>