fix(realname): DTO 更新 expiry_base 替换 enable_realname_activation REALNAME-05

- package_dto.go: CreatePackageRequest/UpdatePackageRequest/PackageResponse 三处替换
- service.go: 同步更新 DTO 映射逻辑使用 ExpiryBase

internal/model/dto/package_dto.go

@@ -15,7 +15,7 @@ type CreatePackageRequest struct {
 	CalendarType         *string `json:"calendar_type" validate:"omitempty,oneof=natural_month by_day" description:"套餐周期类型 (natural_month:自然月, by_day:按天)"`
 	DurationDays         *int    `json:"duration_days" validate:"omitempty,min=1,max=3650" minimum:"1" maximum:"3650" description:"套餐天数(calendar_type=by_day时必填)"`
 	DataResetCycle       *string `json:"data_reset_cycle" validate:"omitempty,oneof=daily monthly yearly none" description:"流量重置周期 (daily:每日, monthly:每月, yearly:每年, none:不重置)"`
-	EnableRealnameActivation *bool   `json:"enable_realname_activation" description:"是否启用实名激活 (true:需实名后激活, false:立即激活)"`
+	ExpiryBase           string  `json:"expiry_base" validate:"omitempty,oneof=from_activation from_purchase" description:"到期时间基准 (from_activation:实名激活时起算, from_purchase:购买时起算)" example:"from_activation"`
 }
 
 // UpdatePackageRequest 更新套餐请求
@@ -32,7 +32,7 @@ type UpdatePackageRequest struct {
 	CalendarType         *string `json:"calendar_type" validate:"omitempty,oneof=natural_month by_day" description:"套餐周期类型 (natural_month:自然月, by_day:按天)"`
 	DurationDays         *int    `json:"duration_days" validate:"omitempty,min=1,max=3650" minimum:"1" maximum:"3650" description:"套餐天数(calendar_type=by_day时必填)"`
 	DataResetCycle       *string `json:"data_reset_cycle" validate:"omitempty,oneof=daily monthly yearly none" description:"流量重置周期 (daily:每日, monthly:每月, yearly:每年, none:不重置)"`
-	EnableRealnameActivation *bool   `json:"enable_realname_activation" description:"是否启用实名激活 (true:需实名后激活, false:立即激活)"`
+	ExpiryBase           *string `json:"expiry_base" validate:"omitempty,oneof=from_activation from_purchase" description:"到期时间基准 (from_activation:实名激活时起算, from_purchase:购买时起算)"`
 }
 
 // PackageListRequest 套餐列表请求
@@ -95,7 +95,7 @@ type PackageResponse struct {
 	CalendarType            string              `json:"calendar_type" description:"套餐周期类型 (natural_month:自然月, by_day:按天)"`
 	DurationDays            *int                `json:"duration_days,omitempty" description:"套餐天数(calendar_type=by_day时有值)"`
 	DataResetCycle          string              `json:"data_reset_cycle" description:"流量重置周期 (daily:每日, monthly:每月, yearly:每年, none:不重置)"`
-	EnableRealnameActivation bool                `json:"enable_realname_activation" description:"是否启用实名激活 (true:需实名后激活, false:立即激活)"`
+	ExpiryBase              string              `json:"expiry_base" description:"到期时间基准 (from_activation:实名激活时起算, from_purchase:购买时起算)"`
 }
 
 // UpdatePackageParams 更新套餐聚合参数

internal/service/package/service.go

@@ -123,10 +123,10 @@ func (s *Service) Create(ctx context.Context, req *dto.CreatePackageRequest) (*d
 		// 默认月重置
 		pkg.DataResetCycle = constants.PackageDataResetMonthly
 	}
-	if req.EnableRealnameActivation != nil {
+	if req.ExpiryBase != "" {
-		pkg.EnableRealnameActivation = *req.EnableRealnameActivation
+		pkg.ExpiryBase = req.ExpiryBase
 	} else {
-		pkg.EnableRealnameActivation = true
+		pkg.ExpiryBase = "from_activation"
 	}
 	pkg.VirtualRatio = calculateVirtualRatio(pkg.EnableVirtualData, pkg.RealDataMB, pkg.VirtualDataMB)
 	pkg.Creator = currentUserID
@@ -225,8 +225,8 @@ func (s *Service) Update(ctx context.Context, id uint, req *dto.UpdatePackageReq
 	if req.DataResetCycle != nil {
 		pkg.DataResetCycle = *req.DataResetCycle
 	}
-	if req.EnableRealnameActivation != nil {
+	if req.ExpiryBase != nil {
-		pkg.EnableRealnameActivation = *req.EnableRealnameActivation
+		pkg.ExpiryBase = *req.ExpiryBase
 	}
 
 	// 校验套餐周期类型和时长配置
@@ -556,7 +556,7 @@ func (s *Service) toResponse(ctx context.Context, pkg *model.Package) *dto.Packa
 		CalendarType:         pkg.CalendarType,
 		DurationDays:         durationDays,
 		DataResetCycle:       pkg.DataResetCycle,
-		EnableRealnameActivation: pkg.EnableRealnameActivation,
+		ExpiryBase:           pkg.ExpiryBase,
 		Status:               pkg.Status,
 		ShelfStatus:          pkg.ShelfStatus,
 		CreatedAt:            pkg.CreatedAt.Format(time.RFC3339),
@@ -621,7 +621,7 @@ func (s *Service) toResponseWithAllocation(_ context.Context, pkg *model.Package
 		CalendarType:         pkg.CalendarType,
 		DurationDays:         durationDays,
 		DataResetCycle:       pkg.DataResetCycle,
-		EnableRealnameActivation: pkg.EnableRealnameActivation,
+		ExpiryBase:           pkg.ExpiryBase,
 		Status:               pkg.Status,
 		ShelfStatus:          pkg.ShelfStatus,
 		CreatedAt:            pkg.CreatedAt.Format(time.RFC3339),