Black market: 18 merchant types from the game's items and player professions

Co-Authored-By: Claude Sonnet 5.5 <noreply@anthropic.com>

src/Decentralized/TerminalWindow.cs

@@ -370,7 +370,7 @@ namespace Decentralized
             {
                 string id = BlackDelivery.SellId(it);
                 var kind = BlackDelivery.KindOf(id);
-                var g = new BmGood { Item = id, Kind = kind, Level = kind == GoodKind.Contraband ? BlackMarket.Pool.Concat(BlackMarket.PharmaPool).First(x => x.Key == id).Value : 3 };
+                var g = new BmGood { Item = id, Kind = kind, Level = kind == GoodKind.Gpu ? 2 : Merchants.Info(id).Level };
                 if (kind == GoodKind.Gpu) g.Health = Items.ToUnit(it).Health;
                 g.Price = BlackMarket.ListPriceOf(BlackDelivery.RefValue(it), _sellMult);
                 return new { g, it };