refactor: 统一业务异常处理，标准化结果码和错误响应

1.  新增并完善ResultCode枚举，补充标准HTTP状态码对应的业务状态码
2.  重构BusinessException，新增基于ResultCode的构造函数和ThrowIf扩展方法
3.  替换所有硬编码的HTTP状态码为统一的ResultCode枚举
4.  优化全局异常中间件，根据业务状态码映射对应HTTP状态码并规范化JSON响应
5.  修复OssImageHelper和AutoDotCodeConsumer中的OSS文件处理逻辑
6.  新增用户答题快照实体类
7.  清理废弃的宠物模块迁移脚本

QYZH.InteractiveMagazine.Service/AdminAuthService.cs

@@ -25,31 +25,31 @@ public class AdminAuthService(BaseRepository<AdminUser> adminUserRepository, ICo
 
         if (string.IsNullOrWhiteSpace(input.UserName))
         {
-            throw new BusinessException("用户名不能为空", 400);
+            throw new BusinessException("用户名不能为空", ResultCode.BAD_REQUEST);
         }
 
         if (string.IsNullOrWhiteSpace(input.Password))
         {
-            throw new BusinessException("密码不能为空", 400);
+            throw new BusinessException("密码不能为空", ResultCode.BAD_REQUEST);
         }
 
         var adminUser = await adminUserRepository.GetFirstAsync(a => a.UserName == input.UserName);
         if (adminUser == null)
         {
             logger.LogWarning("管理员登录失败，用户名不存在: {UserName}", input.UserName);
-            throw new BusinessException("用户名或密码错误", 401);
+            throw new BusinessException("用户名或密码错误", ResultCode.DENY);
         }
 
         if (!BCrypt.Net.BCrypt.Verify(input.Password, adminUser.PasswordHash))
         {
             logger.LogWarning("管理员登录失败，密码错误: {UserName}", input.UserName);
-            throw new BusinessException("用户名或密码错误", 401);
+            throw new BusinessException("用户名或密码错误", ResultCode.DENY);
         }
 
         if (adminUser.Status != 1)
         {
             logger.LogWarning("管理员登录失败，账号已禁用: {UserName}", input.UserName);
-            throw new BusinessException("账号已被禁用，请联系系统管理员", 403);
+            throw new BusinessException("账号已被禁用，请联系系统管理员", ResultCode.FORBIDDEN);
         }
 
         var jwtSettings = GetJwtSettings();
@@ -86,7 +86,7 @@ public class AdminAuthService(BaseRepository<AdminUser> adminUserRepository, ICo
         if (adminUser == null)
         {
             logger.LogWarning("未找到管理员，ID: {UserId}", userId);
-            throw new BusinessException("用户不存在", 404);
+            throw new BusinessException("用户不存在", ResultCode.NOT_FOUND);
         }
 
         return new AdminUserInfoOutput
@@ -104,25 +104,25 @@ public class AdminAuthService(BaseRepository<AdminUser> adminUserRepository, ICo
 
         if (string.IsNullOrWhiteSpace(oldPassword))
         {
-            throw new BusinessException("原密码不能为空", 400);
+            throw new BusinessException("原密码不能为空", ResultCode.BAD_REQUEST);
         }
 
         if (string.IsNullOrWhiteSpace(newPassword))
         {
-            throw new BusinessException("新密码不能为空", 400);
+            throw new BusinessException("新密码不能为空", ResultCode.BAD_REQUEST);
         }
 
         var adminUser = await adminUserRepository.GetByIdAsync(userId);
         if (adminUser == null)
         {
             logger.LogWarning("未找到管理员，ID: {UserId}", userId);
-            throw new BusinessException("用户不存在", 404);
+            throw new BusinessException("用户不存在", ResultCode.NOT_FOUND);
         }
 
         if (!BCrypt.Net.BCrypt.Verify(oldPassword, adminUser.PasswordHash))
         {
             logger.LogWarning("管理员修改密码失败，原密码错误，ID: {UserId}", userId);
-            throw new BusinessException("原密码错误", 400);
+            throw new BusinessException("原密码错误", ResultCode.DENY);
         }
 
         adminUser.PasswordHash = BCrypt.Net.BCrypt.HashPassword(newPassword);
@@ -130,7 +130,7 @@ public class AdminAuthService(BaseRepository<AdminUser> adminUserRepository, ICo
         var result = await adminUserRepository.UpdateAsync(adminUser);
         if (!result)
         {
-            throw new BusinessException("修改密码失败", 500);
+            throw new BusinessException("修改密码失败", ResultCode.GLOBAL_ERROR);
         }
 
         await RedisHelper.DelAsync($"{TokenKeyPrefix}:{userId}");
@@ -151,7 +151,7 @@ public class AdminAuthService(BaseRepository<AdminUser> adminUserRepository, ICo
 
         if (string.IsNullOrWhiteSpace(jwtSettings.SecretKey))
         {
-            throw new BusinessException("JWT 配置不完整", 500);
+            throw new BusinessException("JWT 配置不完整", ResultCode.GLOBAL_ERROR);
         }
 
         return jwtSettings;