Stage 4: black market orders, escrow, delivery, seller scams, platform rug

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

src/Decentralized/CoinCustomers.cs

@@ -51,20 +51,20 @@ namespace Decentralized
             ModHelper.AddDebugFunction(ModInfo.Id, ModInfo.Name, "Black market +50 rep, restock (test)", () => Log.Guard("黑市（测试）", () =>
             {
                 StoreReputation.ModReputation("FACTION_BLACK_MARKET", 50);
+                if (!Unlock.IsUnlocked) ModHelper.GetNetworkUpgrade(Unlock.Id)?.Unlock();
                 if (!Unlock.BlackUnlocked) ModHelper.GetNetworkUpgrade(Unlock.BlackId)?.Unlock();
                 var d = Session.Data;
-                d.Black.RefreshedDay = -999;
                 d.Hot.Add(Assets.PSC, 20); d.Hot.Add(Assets.CRT, 3000); d.Hot.Taint += 2000; d.Hot.Basis += 1000;
-                d.Black.Refresh(StoreStation.GetDayCounter(), StoreReputation.GetBMReputation(), d.Rng, id =>
-                {
-                    var it = ModHelper.SpawnItem(id);
-                    if (it == null) return 0;
-                    long v = it.GetBaseValue();
-                    it.Destroy();
-                    return v;
-                });
+                BlackDelivery.Restock(d, StoreStation.GetDayCounter(), true);
                 Log.Info($"黑市：声望 {StoreReputation.GetBMReputation()}，上架 {d.Black.Offers.Count} 种：{string.Join(", ", d.Black.Offers.Select(o => o.Item + "×" + o.Qty + "@" + o.Price))}，解锁 {Unlock.BlackUnlocked}");
             }));
+            ModHelper.AddDebugFunction(ModInfo.Id, ModInfo.Name, "Courier (test)", () => Log.Guard("黑市快递（测试）", () =>
+            {
+                foreach (var o in Session.Data.Black.Orders.Where(x => x.State == OrderState.Pending)) { o.State = OrderState.Ready; }
+                PlayerStore.Instance.currentClientInstance = null;
+                PlayerStore.Instance.storeClientManager.clientStack.Insert(0, BlackDelivery.CreateCourier());
+                PlayerStore.Instance.TryCallNextClient();
+            }));
             ModHelper.AddDebugFunction(ModInfo.Id, ModInfo.Name, "Coin buyer (test)", () => Log.Guard("用币付款顾客（测试）", () =>
             {
                 var c = new StoreClient