Stage 3: block reward 100, random halving pass-through, RZ800 14kJ, low-tier fakes, tier-mismatch always spotted

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

src/Decentralized.Domain/Market.cs

@@ -44,16 +44,22 @@ namespace Decentralized.Domain
         /// <summary>PSC 的参考价（信用点）。</summary>
         public double Price => Main.Price;
 
-        /// <summary>供给因子的目标：奖励比起始奖励每少一半，锚上移 2^传导指数；减半前 7 天内再逐日加预期。</summary>
-        public static double SupplyTarget(int day, double reward)
+        /// <summary>历次减半抽到的传导指数之和：价格锚的供给因子目标为 2^此值。</summary>
+        public double HalvingLog;
+
+        /// <summary>减半当晚：抽本次的传导指数。</summary>
+        public void OnHalving(Rng rng) => HalvingLog += Tuning.HalvingPassMin + rng.NextDouble() * (Tuning.HalvingPassMax - Tuning.HalvingPassMin);
+
+        /// <summary>供给因子的目标：已发生的减半各自抬高锚；减半前 7 天内再逐日加预期。</summary>
+        public double SupplyTarget(int day)
         {
-            double t = Math.Pow(Tuning.BlockReward / Math.Max(1e-9, reward), Tuning.HalvingPassThrough);
+            double t = Math.Pow(2, HalvingLog);
             int toHalving = Tuning.HalvingDays - day % Tuning.HalvingDays;   // 减半当晚 day % HalvingDays == 0，那天之后又是一个完整周期
             if (toHalving <= Tuning.HalvingRampDays) t *= 1 + Tuning.HalvingRamp * (Tuning.HalvingRampDays - toHalving + 1) / Tuning.HalvingRampDays;
             return t;
         }
 
-        public void UpdateSupply(int day, double reward) => Supply += (SupplyTarget(day, reward) - Supply) * Tuning.SupplyAdjust;
+        public void UpdateSupply(int day) => Supply += (SupplyTarget(day) - Supply) * Tuning.SupplyAdjust;
 
         public double Anchor(ICollection<MarketEvent> active)
         {