feat: 实现20260730优化方案全部功能

- AI文件审查：.docx上传提取文本，支持多种文档类型
- 用工办理工作流：WorkProcess页面+后端API，支持入职/续签/终止等流程
- 企业自建文本库：Templates页面Tab切换，企业模板CRUD+渲染+下载Word
- 考勤发布：Attendance发布/取消发布按钮，员工端MyAttendance页面
- 工资条发布：Money发布/定时发送按钮+弹窗，portal端publishStatus过滤
- 合同到期弹窗：Dashboard合同到期预警可点击打开弹窗，支持续签/终止操作
- Prisma schema新增WorkProcess/EnterpriseTemplate/AttendancePublish模型
- 前后端编译验证全部通过

frontend/src/pages/AIAssistant.tsx

@@ -1329,15 +1329,60 @@ function PredictTab() {
   )
 }
 
+const REVIEW_DOC_TYPES = [
+  { value: 'labor_contract', label: '劳动合同' },
+  { value: 'rescission', label: '协商解除协议' },
+  { value: 'labor_service', label: '劳务协议' },
+  { value: 'internship', label: '实习协议' },
+  { value: 'nda', label: '保密协议' },
+  { value: 'other', label: '其他' },
+]
+
 function ReviewTab() {
   const [contractText, setContractText] = useState('')
   const [result, setResult] = useState<any>(null)
   const [loading, setLoading] = useState(false)
+  const [uploading, setUploading] = useState(false)
+  const [docType, setDocType] = useState('labor_contract')
+  const [fileName, setFileName] = useState('')
   const [showSaveModal, setShowSaveModal] = useState(false)
   const [saveEmployeeId, setSaveEmployeeId] = useState('')
   const [showHistory, setShowHistory] = useState(false)
+  const fileInputRef = useRef<HTMLInputElement>(null)
   const { history, saveMutation, deleteMutation, loadHistory } = useAIHistory('review')
 
+  const handleFileUpload = async (e: React.ChangeEvent<HTMLInputElement>) => {
+    const file = e.target.files?.[0]
+    if (!file) return
+    const ext = file.name.toLowerCase().split('.').pop()
+    if (ext !== 'docx' && ext !== 'doc') {
+      toast.error('仅支持 .docx 格式文件')
+      return
+    }
+    if (file.size > 100 * 1024 * 1024) {
+      toast.error('文件大小不能超过 100MB')
+      return
+    }
+    setUploading(true)
+    try {
+      const formData = new FormData()
+      formData.append('file', file)
+      const res = await api.post('/ai/review/upload', formData, {
+        headers: { 'Content-Type': 'multipart/form-data' },
+      }) as any
+      if (res.data?.text) {
+        setContractText(res.data.text)
+        setFileName(file.name)
+        toast.success(`已提取文件内容（${res.data.text.length} 字）`)
+      }
+    } catch (err: any) {
+      toast.error(err?.response?.data?.error?.message || '文件上传失败')
+    } finally {
+      setUploading(false)
+      if (fileInputRef.current) fileInputRef.current.value = ''
+    }
+  }
+
   const { data: employees } = useQuery<any[]>({
     queryKey: ['roster-list'],
     queryFn: async () => {
@@ -1410,8 +1455,23 @@ function ReviewTab() {
             <HistoryBar history={history || []} onLoad={handleLoadHistory} onDelete={(id) => deleteMutation.mutate(id)} />
           </div>
         )}
-        <div className="mt-3">
-        <Label>粘贴合同条款文本</Label>
+        <div className="mt-3 space-y-3">
+        {/* 文件上传区 */}
+        <div>
+          <Label>上传文件审查（可选）</Label>
+          <div className="flex items-center gap-2">
+            <Select value={docType} onChange={(e) => setDocType(e.target.value)} className="w-40">
+              {REVIEW_DOC_TYPES.map(t => <option key={t.value} value={t.value}>{t.label}</option>)}
+            </Select>
+            <input ref={fileInputRef} type="file" accept=".docx,.doc" onChange={handleFileUpload} className="hidden" />
+            <Button size="sm" variant="secondary" onClick={() => fileInputRef.current?.click()} disabled={uploading}>
+              {uploading ? (<><Loader2 className="w-4 h-4 animate-spin mr-1" />提取中...</>) : (<><FileText className="w-4 h-4 mr-1" />上传 .docx 文件</>)}
+            </Button>
+            {fileName && <span className="text-xs text-gray-500 truncate max-w-[200px]">{fileName}</span>}
+          </div>
+        </div>
+
+        <Label>粘贴或上传合同条款文本</Label>
         <textarea
           className="w-full px-3 py-2 rounded-md border border-gray-300 focus:outline-none focus:ring-2 focus:ring-primary focus:border-transparent text-xs min-h-[200px] resize-y"
           placeholder="粘贴劳动合同文本..."