简化文件上传和附件追加功能的请求头设置，移除JWT认证逻辑，提升代码可读性。

app/api/files/files-upload.ts

@@ -171,15 +171,11 @@ export async function uploadContractTemplate(
     const uploadUrl = `${UPLOAD_URL}/upload_contract_template`;
     console.log('【合同模板上传】准备发送请求到服务器:', uploadUrl);
     
-    // 设置请求头
+    // 设置请求头（按需去掉JWT认证）
     const headers: HeadersInit = {
       'Accept': 'application/json'
     };
     
-    if (jwtToken) {
-      headers['Authorization'] = `Bearer ${jwtToken}`;
-    }
-    
     // 发送请求
     const response = await fetch(uploadUrl, {
       method: 'POST',
@@ -255,15 +251,11 @@ export async function appendContractAttachments(
     const uploadUrl = `${UPLOAD_URL}/contracts/${documentId}/append_attachments`;
     console.log('【合同附件追加】准备发送请求到服务器:', uploadUrl);
     
-    // 设置请求头
+    // 设置请求头（根据需求，附件追加不做JWT认证）
     const headers: HeadersInit = {
       'Accept': 'application/json'
     };
     
-    if (jwtToken) {
-      headers['Authorization'] = `Bearer ${jwtToken}`;
-    }
-    
     // 发送请求
     const response = await fetch(uploadUrl, {
       method: 'POST',