Phase 2: mixer (Web3 tab in the network, terminal page, sanctions, night return), unlock registration per upgrade

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

src/Decentralized/CoinCustomers.cs

@@ -15,6 +15,12 @@ namespace Decentralized
         public static void Subscribe()
         {
             ModHook.OnGenerateCustomerLate += OnGenerate;
+            ModHelper.AddDebugFunction(ModInfo.Id, ModInfo.Name, "Tainted wallet (test)", () => Log.Guard("带污点的钱包（测试）", () =>
+            {
+                var w = Session.Data.Hot;
+                w.Add(Assets.PSC, 100); w.Taint += 3000; w.Basis += 2000;
+                Log.Info($"钱包：PSC {w.Get(Assets.PSC):0.##}，污点 {w.Taint:0}");
+            }));
             ModHelper.AddDebugFunction(ModInfo.Id, ModInfo.Name, "Coin buyer (test)", () => Log.Guard("用币付款顾客（测试）", () =>
             {
                 var c = new StoreClient