第十一阶段 stage 3：自营混币器

- Domain/OwnMixer：注资开张、NPC 客户存入、按匿名集洗污点出款（和普通混币器同一套抽象，匿名集主要是本金和收入）、手续费收入取回全额带污点、本金带自己的污点；客流按"费率 + 出款剩下的污点"和 Tumbler 比，乘黑市声望；风声累积按概率查封（全部没收、记 FENCING、停业）、便衣存入（记 FENCING）、卷款跑路（全额污点、记 FRAUD、黑市声望下降、永久关闭）
- 灰网页"自营混币器"标签（买下场外换币台就有；TerminalWindow 拆成 partial，页面在 TerminalWindow.OwnMix.cs）：状态、费率、口碑、风声、匿名集、各币种本金/收入/客户在途；费率、开张/暂停、注资（账单转账）、取回、卷款跑路（合约签名）
- 夜间结算、日志、报纸新闻；浏览器显示"自营混币器"地址名
- Tuning.OwnMix*（research/mixsim 标定），单元测试，手册与 8 种语言
- 实测：注资 20 PSC 开张，三晚各一笔存入、一次便衣

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

src/Decentralized/Night.cs

@@ -104,6 +104,31 @@ namespace Decentralized
             }
         }
 
+        /// <summary>自营混币器的夜间：客户存入、出款、便衣、查封。对手是 Tumbler 的混币器（关停或被制裁时不算对手）。</summary>
+        private static void OwnMixNight(SaveData d, int day, PlayerStore ps)
+        {
+            var m = d.OwnMix;
+            bool rivalOpen = !d.Story.MixerClosed && !d.Mixer.Sanctioned(day);
+            double rivalRemain = Math.Pow(1 - Mixer.RoundRate(Tuning.OwnMixTicket), Tuning.OwnMixAvgRounds);
+            var evs = m.Night(day, Session.Price, StoreReputation.GetBMReputation(), Mixer.Fee, rivalRemain, rivalOpen, StoryMods.Current.Sanction(day), ActiveEvents().Contains(MarketEvent.Crackdown), d.Rng);
+            foreach (var e in evs)
+            {
+                if (e.Kind == "deposit") ps.AddNightLog(L.T("nightlog.ownmix.in", e.Count, Fmt.Credits(e.Value), Fmt.Credits(e.Value * m.Fee)));
+                else if (e.Kind == "sting")
+                {
+                    ps.secData.CommitCrime("FENCING", (int)Math.Round(e.Crime));
+                    ps.AddNightLog(L.T("nightlog.ownmix.sting"), "cc7755");
+                }
+                else if (e.Kind == "seized")
+                {
+                    ps.secData.CommitCrime("FENCING", (int)Math.Round(e.Crime));
+                    ps.AddNightLog(L.T("nightlog.ownmix.seized", Fmt.Credits(e.Value)), "cc7755");
+                    News.Show("pd_news_ownmix_seized_" + day, L.T("news.ownmix.seized.title"), L.T("news.ownmix.seized.desc"), 4, 8);
+                }
+                Log.Info($"自营混币器 {e.Kind}：{e.Value:0}（{e.Count} 笔），比例 {e.Ratio:0.00}，罪证 {e.Crime:0}，口碑 {m.Rating:0.00}，风声 {m.Heat:0.00}");
+            }
+        }
+
         private static void OnSleepEarly()
         {
             Session.TonightCards.Clear();
@@ -276,6 +301,7 @@ namespace Decentralized
 
             var ps = PlayerStore.Instance;
             if (mined > 0) ps.AddNightLog(L.T("nightlog.mined", Fmt.Num(mined)));
+            if (Unlock.OtcUnlocked) OwnMixNight(d, day, ps);
             var mixBefore = d.SnapshotAll();
             var mixed = d.Mixer.Night(d.WalletAt, day, Session.Price, d.Rng);
             d.ChainDiffAll(mixBefore, d.Address("mixer"));