修复(#130): 统一家庭成员促销资格口径

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

internal/logic/public/subscribe/promo.go

@@ -41,6 +41,15 @@ func loadSubscribePromoMap(ctx context.Context, svcCtx *svc.ServiceContext, subs
 	}
 
 	userInfo, _ := ctx.Value(constant.CtxKeyUser).(*user.User)
+	userID := int64(0)
+	if userInfo != nil {
+		entitlement, err := commonLogic.ResolveEntitlementUser(ctx, svcCtx.DB, userInfo.Id)
+		if err != nil {
+			return nil, err
+		}
+		userID = entitlement.EffectiveUserID
+	}
+
 	candidates, err := querySubscribePromoCandidates(ctx, svcCtx, subscribeIDs, userInfo != nil)
 	if err != nil {
 		if isMissingPromoTableError(err) {
@@ -49,10 +58,6 @@ func loadSubscribePromoMap(ctx context.Context, svcCtx *svc.ServiceContext, subs
 		return nil, err
 	}
 
-	userID := int64(0)
-	if userInfo != nil {
-		userID = userInfo.Id
-	}
 	for _, candidate := range candidates {
 		if candidate.Quantity <= 0 {
 			continue