修复(#128): 统一促销价格资格口径

Co-authored-by: multica-agent <github@multica.ai>

internal/logic/common/promoEligibility.go

@@ -30,7 +30,7 @@ type promoRuleParams struct {
 
 func EvaluatePromo(ctx context.Context, svcCtx *svc.ServiceContext, userID int64, subscribeID int64, quantity int64) (*PromoResult, error) {
 	result := &PromoResult{}
-	if svcCtx == nil || svcCtx.PromoModel == nil || svcCtx.DB == nil || userID <= 0 || subscribeID <= 0 || quantity <= 0 {
+	if svcCtx == nil || svcCtx.PromoModel == nil || svcCtx.DB == nil || subscribeID <= 0 || quantity <= 0 {
 		return result, nil
 	}
 
@@ -101,8 +101,14 @@ func evaluatePromoRule(
 ) (bool, time.Time, error) {
 	switch rule.Type {
 	case promo.RuleTypeNewUser:
+		if userID <= 0 {
+			return false, time.Time{}, nil
+		}
 		return evaluateNewUserPromo(ctx, db, params, userID, currentUser, now)
 	case promo.RuleTypeInactiveUser:
+		if userID <= 0 {
+			return false, time.Time{}, nil
+		}
 		return evaluateInactiveUserPromo(ctx, db, params, userID, promoRuleExpiresAt(rule), now)
 	case promo.RuleTypeCampaign:
 		return true, promoRuleExpiresAt(rule), nil