Fixed preset builder showing items from locked traders

Libraries/SPTarkov.Server.Core/Extensions/ProfileExtensions.cs

@@ -324,4 +324,16 @@ public static class ProfileExtensions
         // No trader data on player profile, fail check
         return false;
     }
+
+    /// <summary>
+    /// Get Ids of traders with an unlocked status of "false"
+    /// </summary>
+    /// <param name="pmcData">Player profile</param>
+    /// <returns>Hashset of Trader ids</returns>
+    public static HashSet<MongoId> GetLockedTraderIds(this PmcData pmcData)
+    {
+        return pmcData.TradersInfo?
+            .Where(trader => trader.Value.Unlocked == false)
+            .Select(t => t.Key).ToHashSet() ?? [];
+    }
 }

Libraries/SPTarkov.Server.Core/Helpers/RagfairOfferHelper.cs

@@ -237,6 +237,7 @@ public class RagfairOfferHelper(
             ? cloner.Clone(searchRequest.BuildItems.Keys.ToDictionary(key => key, ragfairOfferService.GetOffersOfType))
             : searchRequest.BuildItems.Keys.ToDictionary(key => key, ragfairOfferService.GetOffersOfType);
 
+        var lockedTraders = pmcData.GetLockedTraderIds();
         foreach (var (desiredItemTpl, matchingOffers) in buildItems)
         {
             if (matchingOffers is null)
@@ -266,6 +267,12 @@ public class RagfairOfferHelper(
 
                 if (offer.IsTraderOffer())
                 {
+                    // Player hasn't unlocked trader selling this offer, skip
+                    if (lockedTraders.Contains(offer.User.Id))
+                    {
+                        continue;
+                    }
+
                     if (TraderBuyRestrictionReached(offer))
                     {
                         continue;