feat: TurboHR 14项优化与功能增强

- #1 Dashboard风险提醒增加立刻办理按钮
- #2 Calendar月份选择器改为input month
- #3 Termination增加7种解聘原因法律依据和操作步骤
- #5 合同审查支持PDF TXT格式
- #6 AI合同审查prompt优化为具体修改建议
- #7 知识库添加更新机制说明
- #9 SpecialStatus员工选择改用all-lite接口
- #10 Termination增加详细法律条款引用
- #11 Money发薪批次增加社保公积金合计列
- #12 EmployeeAttachment扩展文件类型
- #13 花名册增加女职工干部工人选项加退休提醒
- #14 新增公司备用文件上传模块

frontend/src/pages/Contracts.tsx

@@ -380,7 +380,7 @@ function AddEmployeeModal({ open, onClose, onSubmit, loading, error }: {
 function EmployeeDetailDrawer({ employeeId, onClose }: { employeeId: string; onClose: () => void }) {
   const queryClient = useQueryClient()
   const fileInputRef = useRef<HTMLInputElement>(null)
-  const [fileType, setFileType] = useState<'ID_CARD' | 'BANK_CARD' | 'CONTRACT_SCAN' | 'EDUCATION' | 'OTHER'>('ID_CARD')
+  const [fileType, setFileType] = useState<'ID_CARD' | 'BANK_CARD' | 'CONTRACT_SCAN' | 'EDUCATION' | 'TERMINATION_DOC' | 'RETIREMENT_DOC' | 'INJURY_CERT' | 'MEDICAL_CERT' | 'PREGNANCY_CERT' | 'OTHER'>('ID_CARD')
   const [previewUrl, setPreviewUrl] = useState<string | null>(null)
 
   const { data: employee } = useQuery<any>({
@@ -447,6 +447,11 @@ function EmployeeDetailDrawer({ employeeId, onClose }: { employeeId: string; onC
     BANK_CARD: '银行卡',
     CONTRACT_SCAN: '合同附件',
     EDUCATION: '学历证书',
+    TERMINATION_DOC: '解除文件',
+    RETIREMENT_DOC: '退休档案',
+    INJURY_CERT: '工伤认定',
+    MEDICAL_CERT: '医疗期证明',
+    PREGNANCY_CERT: '三期证明',
     OTHER: '其他',
   }
 
@@ -523,6 +528,11 @@ function EmployeeDetailDrawer({ employeeId, onClose }: { employeeId: string; onC
                 <option value="BANK_CARD">银行卡</option>
                 <option value="CONTRACT_SCAN">合同附件</option>
                 <option value="EDUCATION">学历证书</option>
+                <option value="TERMINATION_DOC">解除文件</option>
+                <option value="RETIREMENT_DOC">退休档案</option>
+                <option value="INJURY_CERT">工伤认定</option>
+                <option value="MEDICAL_CERT">医疗期证明</option>
+                <option value="PREGNANCY_CERT">三期证明</option>
                 <option value="OTHER">其他</option>
               </Select>
               <input