Fold scattered constants into Tuning

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

src/Decentralized.Domain/Market.cs

@@ -22,8 +22,8 @@ namespace Decentralized.Domain
         /// <summary>开门时的参考价，夜间用它和收盘价算当日均价（合约的标记价）。</summary>
         public double OpenPrice = Tuning.PscStartPrice;
 
-        public const double ArbRate = 0.5;          // 非主交易对每晚被拉回参考价的比例
-        public const double SideDepthShare = 0.3;   // 非主交易对的深度占主交易对的比例
+        public const double ArbRate = Tuning.SideArbRate;          // 非主交易对每晚被拉回参考价的比例
+        public const double SideDepthShare = Tuning.SideDepthShare;   // 非主交易对的深度占主交易对的比例
 
         public static Market CreateDefault(int day)
         {