换币客户改在交易终端成交：按比例部分成交、买币随机出价、弹出钱包

- 对话只剩"到终端上谈 / 这单我不做"：交易终端打开柜台交易页（标签"柜台"，只在有客户时出现），客户在柜台前等着
- 柜台交易页：客户来意、数量、市值、出价/要价、单价、地址（卖币可"查地址"进浏览器），25/50/75/100% 或手输数量部分成交（Otc.Part），成交 / 放弃
- 买币客户随机出价（OtcBidMin −5% … OtcBidMax +30%），去掉三档报价与成交概率（OtcPremium、OtcAccept）；成交后弹出 PLEDGER，账单 Prefill 填好客户地址
- 卖币：成交后付现金、币进已连接的钱包；客户说最后一句离开（DialogUIManager.StartDialogue）
- 客户被打发或离开时交易作废；不再有"当晚未付作废"
- 增量翻译：只是和已删旧键同文的新键照常翻译
- 实测：买币客户 25% 部分成交（先在 Web3 换出 CRA），PLEDGER 预填地址签名，到账 +668，客户离开；涡轮增压器作用于矿架立刻挖一轮

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

tests/Decentralized.Domain.Tests/Program.cs

@@ -1357,7 +1357,7 @@ internal static class Program
             Check(ps > 12 && ps < 20, $"夜里向 SPARK 参考价靠拢：{ps:0.00}");
         });
 
-        Test("换币客户：卖币的事件币种、污点比例与折扣、收下后的污点；买币的报价档；成交统计", () =>
+        Test("换币客户：卖币的事件币种、污点比例与折扣、收下后的污点；买币的随机出价；部分成交；成交统计", () =>
         {
             Func<string, double> pr = a => a == Assets.Ponero ? 50 : 1;
             var none = new List<MarketEvent>();
@@ -1397,16 +1397,19 @@ internal static class Program
                 if (Otc.MakeSell(new List<MarketEvent> { MarketEvent.Crackdown }, false, pr, 500, rng).Sting) stingsCd++;
             }
             Check(stingsCd > stings * 2, $"镇压期间便衣更多：{stings} → {stingsCd}");
-            // 买币：市值按房租，三档溢价，越高越难成交
-            var ob = Otc.MakeBuy(pr, 500, new Rng(7));
-            Check(Array.IndexOf(Otc.BuyAssets, ob.Asset) >= 0 && ob.Value >= 500 * Tuning.OtcBuyMinRents && ob.Value <= 500 * Tuning.OtcBuyMaxRents && Near(ob.Qty * pr(ob.Asset), ob.Value, 1e-6), "买币的币种与数量");
-            Check(Otc.Quote(ob, 0) < Otc.Quote(ob, 1) && Otc.Quote(ob, 1) < Otc.Quote(ob, 2) && Otc.Quote(ob, 2) == (int)Math.Round(ob.Value * (1 + Tuning.OtcPremium[2])), "三档报价");
-            for (int t = 0; t < 3; t++)
+            // 买币：市值按房租，出价 = 市值 × (1 + 随机溢价)，溢价在区间内
+            for (int i = 0; i < 200; i++)
             {
-                int ok = 0; var r = new Rng((ulong)(t + 11));
-                for (int i = 0; i < 4000; i++) if (Otc.Accepts(t, r)) ok++;
-                Check(Math.Abs(ok / 4000.0 - Tuning.OtcAccept[t]) < 0.03, $"第 {t + 1} 档成交概率：{ok}/4000");
+                var ob = Otc.MakeBuy(pr, 500, rng);
+                Check(Array.IndexOf(Otc.BuyAssets, ob.Asset) >= 0 && ob.Value >= 500 * Tuning.OtcBuyMinRents && ob.Value <= 500 * Tuning.OtcBuyMaxRents && Near(ob.Qty * pr(ob.Asset), ob.Value, 1e-6), "买币的币种与数量");
+                Check(ob.Cash >= ob.Value * (1 + Tuning.OtcBidMin) - 1 && ob.Cash <= ob.Value * (1 + Tuning.OtcBidMax) + 1, $"出价在区间内：{ob.Cash} / {ob.Value:0}");
             }
+            // 部分成交：现金、市值按数量比例折算，超过报价按全部算
+            var whole = new OtcOffer { Side = OtcSide.Sell, Asset = Assets.PSC, Qty = 20, Value = 2000, TaintRatio = 0.5, Cash = 1200, Sting = true };
+            var half = Otc.Part(whole, 10);
+            Check(Near(half.Qty, 10, 1e-9) && Near(half.Value, 1000, 1e-9) && half.Cash == 600 && half.TaintRatio == 0.5 && half.Sting, "收一半：现金、市值减半，污点比例和便衣不变");
+            Check(Near(Otc.Part(whole, 50).Qty, 20, 1e-9) && Otc.Part(whole, 50).Cash == 1200, "超过报价的数量按全部算");
+            Check(Otc.Part(whole, 0) == null && Otc.Part(whole, -1) == null, "数量不合法");
             // 来历：脏的来源按污点比例出现，数量占比合计为 1
             var hist = Otc.History(new OtcOffer { TaintRatio = 1 }, new[] { "dirty" }, new[] { "clean" }, new Rng(2));
             Check(hist.Count >= 1 && hist.Count <= Tuning.OtcHistoryMax && hist.TrueForAll(kv => kv.Key == "dirty") && Near(hist.Sum(kv => kv.Value), 1, 1e-9), "全脏的币来历都是脏来源");