归档一次性佣金配置落库与累计触发修复，同步规范文档到主 specs

- 归档 fix-one-time-commission-config-and-accumulation 到 archive/2026-01-29-*
- 同步 delta specs 到主规范（one-time-commission-trigger、commission-calculation）
- 新增累计触发逻辑文档和测试用例
- 修复一次性佣金配置落库和累计充值更新逻辑

internal/service/shop_series_allocation/service.go

@@ -16,29 +16,32 @@ import (
 )
 
 type Service struct {
-	allocationStore    *postgres.ShopSeriesAllocationStore
-	tierStore          *postgres.ShopSeriesCommissionTierStore
-	configStore        *postgres.ShopSeriesAllocationConfigStore
-	shopStore          *postgres.ShopStore
-	packageSeriesStore *postgres.PackageSeriesStore
-	packageStore       *postgres.PackageStore
+	allocationStore            *postgres.ShopSeriesAllocationStore
+	tierStore                  *postgres.ShopSeriesCommissionTierStore
+	configStore                *postgres.ShopSeriesAllocationConfigStore
+	oneTimeCommissionTierStore *postgres.ShopSeriesOneTimeCommissionTierStore
+	shopStore                  *postgres.ShopStore
+	packageSeriesStore         *postgres.PackageSeriesStore
+	packageStore               *postgres.PackageStore
 }
 
 func New(
 	allocationStore *postgres.ShopSeriesAllocationStore,
 	tierStore *postgres.ShopSeriesCommissionTierStore,
 	configStore *postgres.ShopSeriesAllocationConfigStore,
+	oneTimeCommissionTierStore *postgres.ShopSeriesOneTimeCommissionTierStore,
 	shopStore *postgres.ShopStore,
 	packageSeriesStore *postgres.PackageSeriesStore,
 	packageStore *postgres.PackageStore,
 ) *Service {
 	return &Service{
-		allocationStore:    allocationStore,
-		tierStore:          tierStore,
-		configStore:        configStore,
-		shopStore:          shopStore,
-		packageSeriesStore: packageSeriesStore,
-		packageStore:       packageStore,
+		allocationStore:            allocationStore,
+		tierStore:                  tierStore,
+		configStore:                configStore,
+		oneTimeCommissionTierStore: oneTimeCommissionTierStore,
+		shopStore:                  shopStore,
+		packageSeriesStore:         packageSeriesStore,
+		packageStore:               packageStore,
 	}
 }
 
@@ -99,6 +102,10 @@ func (s *Service) Create(ctx context.Context, req *dto.CreateShopSeriesAllocatio
 		return nil, errors.New(errors.CodeConflict, "该店铺已分配此套餐系列")
 	}
 
+	if err := s.validateOneTimeCommissionConfig(req); err != nil {
+		return nil, err
+	}
+
 	allocation := &model.ShopSeriesAllocation{
 		ShopID:               req.ShopID,
 		SeriesID:             req.SeriesID,
@@ -108,12 +115,34 @@ func (s *Service) Create(ctx context.Context, req *dto.CreateShopSeriesAllocatio
 		EnableTierCommission: req.EnableTierCommission,
 		Status:               constants.StatusEnabled,
 	}
+
+	// 处理一次性佣金配置
+	allocation.EnableOneTimeCommission = req.EnableOneTimeCommission
+	if req.EnableOneTimeCommission && req.OneTimeCommissionConfig != nil {
+		cfg := req.OneTimeCommissionConfig
+		allocation.OneTimeCommissionType = cfg.Type
+		allocation.OneTimeCommissionTrigger = cfg.Trigger
+		allocation.OneTimeCommissionThreshold = cfg.Threshold
+		// fixed 类型需要保存 mode 和 value
+		if cfg.Type == model.OneTimeCommissionTypeFixed {
+			allocation.OneTimeCommissionMode = cfg.Mode
+			allocation.OneTimeCommissionValue = cfg.Value
+		}
+	}
 	allocation.Creator = currentUserID
 
 	if err := s.allocationStore.Create(ctx, allocation); err != nil {
 		return nil, fmt.Errorf("创建分配失败: %w", err)
 	}
 
+	// 如果是梯度类型，保存梯度配置
+	if req.EnableOneTimeCommission && req.OneTimeCommissionConfig != nil &&
+		req.OneTimeCommissionConfig.Type == model.OneTimeCommissionTypeTiered {
+		if err := s.saveOneTimeCommissionTiers(ctx, allocation.ID, req.OneTimeCommissionConfig.Tiers, currentUserID); err != nil {
+			return nil, fmt.Errorf("创建一次性佣金梯度配置失败: %w", err)
+		}
+	}
+
 	return s.buildResponse(ctx, allocation, targetShop.ShopName, series.SeriesName)
 }
 
@@ -170,6 +199,42 @@ func (s *Service) Update(ctx context.Context, id uint, req *dto.UpdateShopSeries
 		}
 		allocation.EnableTierCommission = *req.EnableTierCommission
 	}
+
+	enableOneTimeCommission := allocation.EnableOneTimeCommission
+	if req.EnableOneTimeCommission != nil {
+		enableOneTimeCommission = *req.EnableOneTimeCommission
+	}
+	if err := s.validateOneTimeCommissionConfigForUpdate(enableOneTimeCommission, req.OneTimeCommissionConfig); err != nil {
+		return nil, err
+	}
+
+	oneTimeCommissionChanged := false
+	if req.EnableOneTimeCommission != nil {
+		if allocation.EnableOneTimeCommission != *req.EnableOneTimeCommission {
+			oneTimeCommissionChanged = true
+		}
+		allocation.EnableOneTimeCommission = *req.EnableOneTimeCommission
+	}
+	if req.OneTimeCommissionConfig != nil && allocation.EnableOneTimeCommission {
+		cfg := req.OneTimeCommissionConfig
+		if allocation.OneTimeCommissionType != cfg.Type ||
+			allocation.OneTimeCommissionTrigger != cfg.Trigger ||
+			allocation.OneTimeCommissionThreshold != cfg.Threshold ||
+			allocation.OneTimeCommissionMode != cfg.Mode ||
+			allocation.OneTimeCommissionValue != cfg.Value {
+			oneTimeCommissionChanged = true
+		}
+		allocation.OneTimeCommissionType = cfg.Type
+		allocation.OneTimeCommissionTrigger = cfg.Trigger
+		allocation.OneTimeCommissionThreshold = cfg.Threshold
+		if cfg.Type == model.OneTimeCommissionTypeFixed {
+			allocation.OneTimeCommissionMode = cfg.Mode
+			allocation.OneTimeCommissionValue = cfg.Value
+		} else {
+			allocation.OneTimeCommissionMode = ""
+			allocation.OneTimeCommissionValue = 0
+		}
+	}
 	allocation.Updater = currentUserID
 
 	if configChanged {
@@ -182,6 +247,16 @@ func (s *Service) Update(ctx context.Context, id uint, req *dto.UpdateShopSeries
 		return nil, fmt.Errorf("更新分配失败: %w", err)
 	}
 
+	if oneTimeCommissionChanged && req.OneTimeCommissionConfig != nil &&
+		req.OneTimeCommissionConfig.Type == model.OneTimeCommissionTypeTiered {
+		if err := s.oneTimeCommissionTierStore.DeleteByAllocationID(ctx, allocation.ID); err != nil {
+			return nil, fmt.Errorf("清理旧梯度配置失败: %w", err)
+		}
+		if err := s.saveOneTimeCommissionTiers(ctx, allocation.ID, req.OneTimeCommissionConfig.Tiers, currentUserID); err != nil {
+			return nil, fmt.Errorf("更新一次性佣金梯度配置失败: %w", err)
+		}
+	}
+
 	shop, _ := s.shopStore.GetByID(ctx, allocation.ShopID)
 	series, _ := s.packageSeriesStore.GetByID(ctx, allocation.SeriesID)
 
@@ -323,7 +398,7 @@ func (s *Service) buildResponse(ctx context.Context, a *model.ShopSeriesAllocati
 		allocatorShopName = allocatorShop.ShopName
 	}
 
-	return &dto.ShopSeriesAllocationResponse{
+	resp := &dto.ShopSeriesAllocationResponse{
 		ID:                a.ID,
 		ShopID:            a.ShopID,
 		ShopName:          shopName,
@@ -335,11 +410,39 @@ func (s *Service) buildResponse(ctx context.Context, a *model.ShopSeriesAllocati
 			Mode:  a.BaseCommissionMode,
 			Value: a.BaseCommissionValue,
 		},
-		EnableTierCommission: a.EnableTierCommission,
-		Status:               a.Status,
-		CreatedAt:            a.CreatedAt.Format(time.RFC3339),
-		UpdatedAt:            a.UpdatedAt.Format(time.RFC3339),
-	}, nil
+		EnableTierCommission:    a.EnableTierCommission,
+		EnableOneTimeCommission: a.EnableOneTimeCommission,
+		Status:                  a.Status,
+		CreatedAt:               a.CreatedAt.Format(time.RFC3339),
+		UpdatedAt:               a.UpdatedAt.Format(time.RFC3339),
+	}
+
+	if a.EnableOneTimeCommission {
+		cfg := &dto.OneTimeCommissionConfig{
+			Type:      a.OneTimeCommissionType,
+			Trigger:   a.OneTimeCommissionTrigger,
+			Threshold: a.OneTimeCommissionThreshold,
+			Mode:      a.OneTimeCommissionMode,
+			Value:     a.OneTimeCommissionValue,
+		}
+		if a.OneTimeCommissionType == model.OneTimeCommissionTypeTiered {
+			tiers, err := s.oneTimeCommissionTierStore.ListByAllocationID(ctx, a.ID)
+			if err == nil && len(tiers) > 0 {
+				cfg.Tiers = make([]dto.OneTimeCommissionTierEntry, len(tiers))
+				for i, t := range tiers {
+					cfg.Tiers[i] = dto.OneTimeCommissionTierEntry{
+						TierType:  t.TierType,
+						Threshold: t.ThresholdValue,
+						Mode:      t.CommissionMode,
+						Value:     t.CommissionValue,
+					}
+				}
+			}
+		}
+		resp.OneTimeCommissionConfig = cfg
+	}
+
+	return resp, nil
 }
 
 func (s *Service) createNewConfigVersion(ctx context.Context, allocation *model.ShopSeriesAllocation) error {
@@ -371,6 +474,72 @@ func (s *Service) createNewConfigVersion(ctx context.Context, allocation *model.
 	return nil
 }
 
+func (s *Service) validateOneTimeCommissionConfig(req *dto.CreateShopSeriesAllocationRequest) error {
+	if !req.EnableOneTimeCommission {
+		return nil
+	}
+	if req.OneTimeCommissionConfig == nil {
+		return errors.New(errors.CodeInvalidParam, "启用一次性佣金时必须提供配置")
+	}
+	cfg := req.OneTimeCommissionConfig
+	if cfg.Type == model.OneTimeCommissionTypeFixed {
+		if cfg.Mode == "" {
+			return errors.New(errors.CodeInvalidParam, "固定类型一次性佣金必须指定返佣模式")
+		}
+		if cfg.Value <= 0 {
+			return errors.New(errors.CodeInvalidParam, "固定类型一次性佣金必须指定返佣金额")
+		}
+	} else if cfg.Type == model.OneTimeCommissionTypeTiered {
+		if len(cfg.Tiers) == 0 {
+			return errors.New(errors.CodeInvalidParam, "梯度类型一次性佣金必须提供梯度档位")
+		}
+	}
+	return nil
+}
+
+func (s *Service) validateOneTimeCommissionConfigForUpdate(enableOneTimeCommission bool, cfg *dto.OneTimeCommissionConfig) error {
+	if !enableOneTimeCommission {
+		return nil
+	}
+	if cfg == nil {
+		return nil
+	}
+	if cfg.Type == model.OneTimeCommissionTypeFixed {
+		if cfg.Mode == "" {
+			return errors.New(errors.CodeInvalidParam, "固定类型一次性佣金必须指定返佣模式")
+		}
+		if cfg.Value <= 0 {
+			return errors.New(errors.CodeInvalidParam, "固定类型一次性佣金必须指定返佣金额")
+		}
+	} else if cfg.Type == model.OneTimeCommissionTypeTiered {
+		if len(cfg.Tiers) == 0 {
+			return errors.New(errors.CodeInvalidParam, "梯度类型一次性佣金必须提供梯度档位")
+		}
+	}
+	return nil
+}
+
+func (s *Service) saveOneTimeCommissionTiers(ctx context.Context, allocationID uint, tiers []dto.OneTimeCommissionTierEntry, userID uint) error {
+	if len(tiers) == 0 {
+		return nil
+	}
+
+	tierModels := make([]*model.ShopSeriesOneTimeCommissionTier, len(tiers))
+	for i, t := range tiers {
+		tierModels[i] = &model.ShopSeriesOneTimeCommissionTier{
+			AllocationID:    allocationID,
+			TierType:        t.TierType,
+			ThresholdValue:  t.Threshold,
+			CommissionMode:  t.Mode,
+			CommissionValue: t.Value,
+			Status:          constants.StatusEnabled,
+		}
+		tierModels[i].Creator = userID
+	}
+
+	return s.oneTimeCommissionTierStore.BatchCreate(ctx, tierModels)
+}
+
 func (s *Service) GetEffectiveConfig(ctx context.Context, allocationID uint, at time.Time) (*model.ShopSeriesAllocationConfig, error) {
 	config, err := s.configStore.GetEffective(ctx, allocationID, at)
 	if err != nil {