refactor(service): 为服务类添加全局事务管理

- 在 GroupingServiceImpl、ImageServiceImpl、MarkdownFileServiceImpl、RegistrationCodeServiceImpl、SystemSettingServiceImpl、TrashServiceImpl 和 UserServiceImpl 类上添加了 @Transactional 注解- 移除了 GroupingServiceImpl 中的局部 @Transactional 注解
- 此修改确保了每个服务类

biji-houdaun/src/main/java/com/test/bijihoudaun/service/impl/GroupingServiceImpl.java

@@ -16,6 +16,7 @@ import org.springframework.transaction.annotation.Transactional;
 import java.util.List;
 
 @Service
+@Transactional
 public class GroupingServiceImpl
         extends ServiceImpl<GroupingMapper, Grouping>
         implements GroupingService {
@@ -52,7 +53,6 @@ public class GroupingServiceImpl
     }
 
     @Override
-    @Transactional
     public void deleteGrouping(Long id) {
         // 1. 使用 LambdaUpdateWrapper 软删除分组本身，确保 isDeleted 和 deletedAt 都被更新
         LambdaUpdateWrapper<Grouping> groupingUpdateWrapper = new LambdaUpdateWrapper<>();

biji-houdaun/src/main/java/com/test/bijihoudaun/service/impl/ImageServiceImpl.java

@@ -11,6 +11,7 @@ import com.test.bijihoudaun.service.ImageService;
 import jakarta.annotation.Resource;
 import org.springframework.beans.factory.annotation.Value;
 import org.springframework.stereotype.Service;
+import org.springframework.transaction.annotation.Transactional;
 import org.springframework.web.multipart.MultipartFile;
 
 import java.io.IOException;
@@ -23,6 +24,7 @@ import java.util.List;
 import java.util.UUID;
 
 @Service
+@Transactional
 public class ImageServiceImpl
         extends ServiceImpl<ImageMapper, Image>
         implements ImageService {

biji-houdaun/src/main/java/com/test/bijihoudaun/service/impl/MarkdownFileServiceImpl.java

@@ -16,11 +16,13 @@ import jakarta.annotation.Resource;
 import org.springframework.beans.factory.annotation.Autowired;
 import org.springframework.scheduling.annotation.Async;
 import org.springframework.stereotype.Service;
+import org.springframework.transaction.annotation.Transactional;
 
 import java.util.Date;
 import java.util.List;
 
 @Service
+@Transactional
 public class MarkdownFileServiceImpl
         extends ServiceImpl<MarkdownFileMapper, MarkdownFile>
         implements MarkdownFileService {

biji-houdaun/src/main/java/com/test/bijihoudaun/service/impl/RegistrationCodeServiceImpl.java

@@ -14,6 +14,7 @@ import java.time.format.DateTimeFormatter;
 import java.util.UUID;
 
 @Service
+@Transactional
 public class RegistrationCodeServiceImpl extends ServiceImpl<RegistrationCodeMapper, RegistrationCode> implements RegistrationCodeService {
 
     @Override

biji-houdaun/src/main/java/com/test/bijihoudaun/service/impl/SystemSettingServiceImpl.java

@@ -5,8 +5,10 @@ import com.test.bijihoudaun.entity.SystemSetting;
 import com.test.bijihoudaun.mapper.SystemSettingMapper;
 import com.test.bijihoudaun.service.SystemSettingService;
 import org.springframework.stereotype.Service;
+import org.springframework.transaction.annotation.Transactional;
 
 @Service
+@Transactional
 public class SystemSettingServiceImpl extends ServiceImpl<SystemSettingMapper, SystemSetting> implements SystemSettingService {
 
     private static final String REGISTRATION_ENABLED_KEY = "registration.enabled";

biji-houdaun/src/main/java/com/test/bijihoudaun/service/impl/TrashServiceImpl.java

@@ -17,6 +17,7 @@ import java.util.stream.Collectors;
 import java.util.stream.Stream;
 
 @Service
+@Transactional
 public class TrashServiceImpl implements TrashService {
 
     @Autowired

biji-houdaun/src/main/java/com/test/bijihoudaun/service/impl/UserServiceImpl.java

@@ -17,12 +17,14 @@ import org.springframework.security.core.userdetails.UserDetails;
 import org.springframework.security.core.userdetails.UserDetailsService;
 import org.springframework.security.core.userdetails.UsernameNotFoundException;
 import org.springframework.stereotype.Service;
+import org.springframework.transaction.annotation.Transactional;
 
 import java.util.ArrayList;
 import java.util.Calendar;
 import java.util.Date;
 
 @Service
+@Transactional
 public class UserServiceImpl extends ServiceImpl<UserMapper, User> implements UserService, UserDetailsService {
 
     @Autowired