场外换币台实测修正：三个选项、换币账单不独占终端

- 原版对话最多三个选项：买币对话去掉"不卖"（第四个选项会越界），不想卖就打发客户；选项那句话带上报价和溢价，删除 otc.tier
- 换币账单单独挂着（OtcClient.Standing），WalletWindow.Pending 没有终端账单时回落到它：不独占 Web3、灰网页，换币、混币开的账单不会把它覆盖；签名后清掉，被挤出内存池时放回
- 到账后刷新终端；手册补一句"不想卖就把客户打发走"

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

src/Decentralized/OtcClient.cs

@@ -14,8 +14,10 @@ namespace Decentralized
     {
         public const string Id = OtcLamp.Target;
         private static bool spawning;
-        /// <summary>买币客户开出的账单：夜里还没付就作废。</summary>
+        /// <summary>买币客户开出的账单：付清（确认到账）或作废之前一直记着。</summary>
         private static WalletWindow.Bill pendingBill;
+        /// <summary>还没签名付款的换币账单：钱包没有终端账单时用它（见 <see cref="WalletWindow.Pending"/>）；签名后清掉，没成交（挤出内存池）时放回来。</summary>
+        public static WalletWindow.Bill Standing;
 
         public static void Subscribe()
         {
@@ -42,6 +44,9 @@ namespace Decentralized
             ModHook.OnGoingSleepEarly -= VoidUnpaid;
         }
 
+        /// <summary>这张账单是不是换币客户开的（终端不让它独占 Web3、灰网页）。</summary>
+        public static bool IsBill(WalletWindow.Bill bill) => bill != null && bill == pendingBill;
+
         private static void Open(StoreClientManager _) => spawning = true;
         private static void Close(StoreClientManager _) => spawning = false;
 
@@ -162,14 +167,14 @@ namespace Decentralized
             {
                 int t = tier, price = Otc.Quote(o, t);
                 var say = new Dialogue();
-                var reply = say.SetText("PLAYER", L.T("otc.buy.say", Fmt.Credits(price))).NextDialogue();
+                // 选项上显示的是玩家要说的这句话
+                string line = L.T("otc.buy.say", Fmt.Credits(price), (Tuning.OtcPremium[t] * 100).ToString("0"));
+                var reply = say.SetText("PLAYER", line).NextDialogue();
                 reply.SetText(c.displayName, L.T("otc.buy.reject")).SetEndAction(Leave);
-                ask.AddChoice(DirectoryMaster.Item("$"), L.T("otc.tier", (Tuning.OtcPremium[t] * 100).ToString("0"), Fmt.Credits(price)), "", say,
+                ask.AddChoice(DirectoryMaster.Item("$"), line, "", say,
                     () => reply.SetText(c.displayName, AcceptBuy(o, addr, t, price)));
             }
-            var no = new Dialogue();
-            no.SetText("PLAYER", L.T("otc.buy.no")).NextDialogue().SetText(c.displayName, L.T("otc.refused")).SetEndAction(Leave);
-            ask.AddChoice(DirectoryMaster.Item("cancel"), L.T("otc.choice.no"), "", no, null);
+            // 原版的对话最多三个选项（选项气泡只有三个），所以没有"不卖"：不想卖就把客户打发走
         }
 
         /// <summary>报价：客户按这一档的概率接受。接受就开账单（转到客户地址），确认后现金到账。返回客户的回话。</summary>
@@ -193,27 +198,35 @@ namespace Decentralized
                         Session.Data.Otc.Record(price);
                         if (pendingBill == bill) pendingBill = null;
                         PlayerStore.Instance.AddNightLog(L.T("nightlog.otc.paid", WalletWindow.Amt(qty), asset, Fmt.Credits(price)));
+                        TerminalWindow.Refresh(L.T("nightlog.otc.paid", WalletWindow.Amt(qty), asset, Fmt.Credits(price)));
                         Log.Info($"换币客户：{qty} {asset} 到账，收现金 {price}");
                         Session.Save();
                     }),
                 };
-                WalletWindow.Pending = pendingBill = bill;
+                pendingBill = Standing = bill;
                 line = L.T("otc.buy.accept", Fmt.Credits(price), ChainAddress.Short(addr));
                 Log.Info($"换币客户：第 {tier + 1} 档 {price} 成交，待转 {qty} {asset} 到 {addr}");
             });
             return line;
         }
 
-        /// <summary>睡觉前：买币客户的账单还没付（仍是待付账单），作废。已经签名、还在确认中的照常到账。</summary>
+        /// <summary>睡觉前：买币客户的账单还没签名付款，作废。已经签名、还在确认中的照常到账。</summary>
         private static void VoidUnpaid()
         {
-            if (pendingBill == null || WalletWindow.Pending != pendingBill) return;
+            if (Standing == null) return;
+            var bill = Standing;
             Log.Guard("换币账单作废", () =>
             {
-                WalletWindow.Pending = null;
-                PlayerStore.Instance.AddNightLog(L.T("nightlog.otc.unpaid", WalletWindow.Amt(pendingBill.Amount), pendingBill.Asset), "cc7755");
+                PlayerStore.Instance.AddNightLog(L.T("nightlog.otc.unpaid", WalletWindow.Amt(bill.Amount), bill.Asset), "cc7755");
                 Log.Info("换币客户的账单当天没付，作废");
             });
+            Void();
+        }
+
+        /// <summary>作废换币账单（终端的"作废"、夜里没付、读档）。</summary>
+        public static void Void()
+        {
+            Standing = null;
             pendingBill = null;
         }