chore(i18n): auto-update translations via LLM

frontend/translations/zh.json

@@ -535,6 +535,7 @@
   "index.page_title_dashboard": "仪表板",
   "index.page_title_public": "智能文档处理",
   "index.platform_overview": "平台概述",
+  "index.processing_stats": "处理统计",
   "index.quick_actions": "快捷操作",
   "index.quick_documents": "我的文档",
   "index.quick_documents_desc": "浏览您的处理文件",
@@ -553,9 +554,13 @@
   "index.stat_active_integrations": "活跃集成",
   "index.stat_active_users": "活跃用户",
   "index.stat_files_month": "本月文件",
+  "index.stat_files_ocr": "含OCR的文件",
   "index.stat_files_today": "今天的文件",
   "index.stat_storage_targets": "存储目标",
+  "index.stat_this_month": "本月",
+  "index.stat_today": "今天",
   "index.stat_total_files": "总文件数",
+  "index.stat_total_processed": "总处理量",
   "index.tier_plan": "计划",
   "index.tier_upgrade": "升级",
   "index.tier_view_details": "查看完整详情",