Black market: useful goods only, player selling with price-dependent speed and taint

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

src/Decentralized/BlackDelivery.cs

@@ -48,6 +48,31 @@ namespace Decentralized
             return n;
         }
 
+        // ---- 玩家出售：从储藏区挑能上架的货 ----
+
+        /// <summary>这件物品在黑市上的货 id（显卡是 "gpu:型号"，其余是物品 id）；不能上架返回 null。</summary>
+        public static string SellId(GameItem it)
+        {
+            if (it == null || it.identifier == null) return null;
+            if (Items.IsGpu(it)) return "gpu:" + Items.ToUnit(it).Model;
+            string id = it.identifier;
+            return BlackMarket.Pool.Any(x => x.Key == id) || BlackMarket.TechPool.Contains(id) ? id : null;
+        }
+
+        public static System.Collections.Generic.List<GameItem> Sellable() =>
+            GraphUtils.FindAllChildrenType<GameItem>(EmporiumEntry.Instance.invElement, i => GeneralHelper.IsItemOwned(i) && SellId(i) != null, i => i.identifier != Items.Rig);
+
+        /// <summary>参考价：显卡按标称型号与成色，其余按游戏基础价。</summary>
+        public static long RefValue(GameItem it)
+        {
+            string id = SellId(it);
+            if (id == null) return 0;
+            if (Items.IsGpu(it)) { var u = Items.ToUnit(it); return CardValue.Of(u.Model, u.Health); }
+            return Value(id);
+        }
+
+        public static GoodKind KindOf(string id) => id.StartsWith("gpu:") ? GoodKind.Gpu : BlackMarket.TechPool.Contains(id) ? GoodKind.Tech : GoodKind.Contraband;
+
         /// <summary>每周刷新：现货与订单目录一起。返回是否刷新了。</summary>
         public static bool Restock(SaveData d, int day, bool force = false)
         {
@@ -62,8 +87,25 @@ namespace Decentralized
         public static void Night(SaveData d, int day, bool crackdown)
         {
             var ps = PlayerStore.Instance;
-            foreach (var e in d.Black.Night(day, crackdown, d.Hot, d.Rng, StoreReputation.GetSecReputation()))
+            foreach (var e in d.Black.Night(day, crackdown, d.Hot, d.Rng, StoreReputation.GetSecReputation(), Session.Price))
             {
+                if (e.Sale != null)
+                {
+                    string sname = ItemName(e.Sale.Item);
+                    Log.Info($"黑市出售事件：{e.Kind} {e.Sale.Item} ×{e.Sale.Mult} 货款 {e.Amount:0} 污点 {e.Sale.Taint:0}");
+                    switch (e.Kind)
+                    {
+                        case "sale_sold": ps.AddNightLog(L.T("nightlog.bm.sale_sold", sname, Fmt.Num(e.Amount), e.Sale.PayDay), "99bb66"); break;
+                        case "sale_paid": ps.AddNightLog(L.T("nightlog.bm.sale_paid", sname, Fmt.Num(e.Amount), Fmt.Num(e.Sale.Taint)), "99bb66"); break;
+                        case "sale_fake":
+                            Items.Give(Make(e.Sale.Item, e.Sale.Model, e.Sale.FakeOf, e.Sale.Health));
+                            ps.AddNightLog(L.T("nightlog.bm.sale_fake", sname), "cc7755");
+                            break;
+                        case "sale_rug": ps.AddNightLog(L.T("nightlog.bm.sale_rug", sname, Fmt.Num(e.Amount)), "cc7755"); break;
+                    }
+                    if (e.Kind == "sale_rug") News.Show("pd_news_bmrug_" + day, L.T("news.bmrug.title"), L.T("news.bmrug.desc"), 4);
+                    continue;
+                }
                 string name = e.Order != null && e.Kind != "trap" ? ItemName(e.Order.Item) : null;
                 Log.Info($"黑市订单事件：{e.Kind} {e.Order?.Item} {e.Order?.Seller} {e.Order?.Mode} 受控 {e.Order?.Controlled} 金额 {e.Amount:0}");
                 switch (e.Kind)