fix(用户绑定): 优化邮箱绑定逻辑并完善设备绑定功能

修复绑定相同邮箱时的错误提示问题，允许重复绑定相同邮箱
重构设备绑定逻辑，增加详细注释和日志记录
移除无用的WebSocket测试端点
更新测试脚本中的默认配置和测试用例

internal/logic/public/user/bindEmailWithPasswordLogic.go

@@ -61,8 +61,17 @@ func (l *BindEmailWithPasswordLogic) BindEmailWithPassword(req *types.BindEmailW
 		return errors.Wrapf(xerr.NewErrCode(xerr.DatabaseQueryError), "FindUserAuthMethodByUserId error")
 	}
 
-	// 如果当前用户已经绑定了邮箱，不允许重复绑定
+	// 如果当前用户已经绑定了邮箱，检查是否是同一个邮箱
 	if currentEmailMethod.Id > 0 {
+		// 如果绑定的是同一个邮箱，直接返回成功
+		if currentEmailMethod.AuthIdentifier == req.Email {
+			l.Infow("user is binding the same email that is already bound",
+				logger.Field("user_id", currentUser.Id),
+				logger.Field("email", req.Email),
+			)
+			return nil
+		}
+		// 如果是不同的邮箱，不允许重复绑定
 		return errors.Wrapf(xerr.NewErrCode(xerr.UserExist), "current user already has email bound")
 	}
 
@@ -76,13 +85,13 @@ func (l *BindEmailWithPasswordLogic) BindEmailWithPassword(req *types.BindEmailW
 	if existingEmailMethod.Id > 0 && existingEmailMethod.UserId != currentUser.Id {
 		// 调用设备绑定逻辑，这会触发数据迁移
 		bindLogic := auth.NewBindDeviceLogic(l.ctx, l.svcCtx)
-		
+
 		// 获取当前用户的设备标识符
 		deviceMethod, err := l.svcCtx.UserModel.FindUserAuthMethodByUserId(l.ctx, "device", currentUser.Id)
 		if err != nil {
 			return errors.Wrapf(xerr.NewErrCode(xerr.DatabaseQueryError), "FindUserAuthMethodByUserId device error")
 		}
-		
+
 		if deviceMethod.Id == 0 {
 			return errors.Wrapf(xerr.NewErrCode(xerr.InvalidAccess), "current user has no device identifier")
 		}
@@ -111,7 +120,7 @@ func (l *BindEmailWithPasswordLogic) BindEmailWithPassword(req *types.BindEmailW
 			AuthIdentifier: req.Email,
 			Verified:       true, // 通过密码验证，直接设为已验证
 		}
-		
+
 		if err := l.svcCtx.UserModel.InsertUserAuthMethods(l.ctx, emailMethod); err != nil {
 			return errors.Wrapf(xerr.NewErrCode(xerr.DatabaseInsertError), "InsertUserAuthMethods error")
 		}
@@ -123,4 +132,4 @@ func (l *BindEmailWithPasswordLogic) BindEmailWithPassword(req *types.BindEmailW
 	}
 
 	return nil
-}
+}