Halving now raises the price anchor (pass-through 0.6, ramp the week before) with a pre-halving news item

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

src/Decentralized.Domain/Tuning.cs

@@ -9,6 +9,13 @@ namespace Decentralized.Domain
         public const double PscStartPrice = 100;
         public const double BlockReward = 90;
         public const int HalvingDays = 90;
+        /// <summary>减半对币价的传导：奖励减半时，价格锚上移 2^传导指数 倍（0.6 即约 +52%），市场已部分预期到，所以不是翻倍。</summary>
+        public const double HalvingPassThrough = 0.6;
+        /// <summary>减半前一周的预期行情：锚逐日抬高，到减半当天为 +8%。</summary>
+        public const int HalvingRampDays = 7;
+        public const double HalvingRamp = 0.08;
+        /// <summary>价格锚向目标的逐晚靠拢比例（约 7 天完成大半）。</summary>
+        public const double SupplyAdjust = 0.15;
         public const double NpcHash0 = 360;
         public const double NpcKjPerH = 2.4;
         public const double ElecPrice = 1.5;