fix: 修复预存编译错误（DanshopSyncService引用 + 缺失File/FileOutputStream import）

cfc-backend/src/main/java/com/etotem/cfc/service/UserService.java

@@ -52,9 +52,6 @@ private VerificationCodeService verificationCodeService;
 @Resource
 private WechatService wechatService;
 
-    @Resource
-    private DanshopSyncService danshopSyncService;
-
     @Resource
     private DistributionService distributionService;
 

cfc-backend/src/main/java/com/etotem/cfc/service/impl/PdfReportServiceImpl.java

@@ -15,6 +15,8 @@ import org.springframework.stereotype.Service;
 
 import javax.annotation.Resource;
 import java.io.ByteArrayOutputStream;
+import java.io.File;
+import java.io.FileOutputStream;
 import java.io.IOException;
 import java.text.SimpleDateFormat;
 import java.util.Base64;