1. 套餐过期前再主动同步一次流量

2. 生效套餐逻辑错误的问题

internal/service/package/activation_service.go

@@ -92,19 +92,20 @@ func (s *ActivationService) ActivateByRealname(ctx context.Context, carrierType
 
 			// 检查是否是主套餐
 			if usage.MasterUsageID == nil {
-				// 主套餐：需要检查是否有已激活的主套餐
+				// 主套餐：需要检查是否有已激活或已用完（仍在有效期）的主套餐
 				var activeMain model.PackageUsage
-				err := tx.Where("status = ?", constants.PackageUsageStatusActive).
+				err := tx.Where("status IN ?", []int{constants.PackageUsageStatusActive, constants.PackageUsageStatusDepleted}).
 					Where("master_usage_id IS NULL").
 					Where(carrierType+"_id = ?", carrierID).
 					Order("priority ASC").
 					First(&activeMain).Error
 
 				if err == nil {
-					// 已有激活的主套餐，保持排队状态
-					s.logger.Warn("已有激活主套餐，跳过激活",
+					// 已有生效中或已用完（占位）的主套餐，保持排队状态
+					s.logger.Warn("已有占位主套餐，跳过激活",
 						zap.Uint("usage_id", usage.ID),
-						zap.Uint("active_main_id", activeMain.ID))
+						zap.Uint("active_main_id", activeMain.ID),
+						zap.Int("active_main_status", activeMain.Status))
 					continue
 				}
 				if err != gorm.ErrRecordNotFound {
@@ -500,9 +501,10 @@ func (s *ActivationService) getNextPendingMainPackage(ctx context.Context, tx *g
 
 func (s *ActivationService) hasActiveMainPackage(ctx context.Context, tx *gorm.DB, carrierType string, carrierID uint) (bool, error) {
 	var count int64
+	// 生效中（1）和已用完（2）都属于"占位"状态：已用完的套餐仍在有效期内，不允许提前激活下一个主套餐
 	if err := tx.WithContext(ctx).
 		Model(&model.PackageUsage{}).
-		Where("status = ?", constants.PackageUsageStatusActive).
+		Where("status IN ?", []int{constants.PackageUsageStatusActive, constants.PackageUsageStatusDepleted}).
 		Where("master_usage_id IS NULL").
 		Where(carrierType+"_id = ?", carrierID).
 		Count(&count).Error; err != nil {