卖货页与订单页分栏，永续表头列宽，手册合并为 16 章

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

src/Decentralized.Domain/Tuning.cs

@@ -120,6 +120,8 @@ namespace Decentralized.Domain
         public const double BmListFee = 0.05, BmRepriceFee = 0.02, BmCommission = 0.08, BmSellMin = 0.6, BmSellMax = 1.8, BmFakeDetect = 0.5;
         /// <summary>出售成交天数的倍率界线：不高于 BmSellFastMult 倍用 BmSellDaysFast 天，BmSellDay1Mult 倍用 BmSellDays1 天，之间线性，再往上指数到 BmSellMax。</summary>
         public const double BmSellFastMult = 0.9, BmSellDay1Mult = 1.0;
+        /// <summary>出售页可选的标价倍率档位。</summary>
+        public static readonly double[] BmSellMults = { 0.6, 0.8, 0.9, 1.0, 1.2, 1.5, 1.8 };
         public const double BmSellDaysFast = 1, BmSellDays1 = 2, BmSellDaysMax = 14;
         public const double BmSaleTaintChanceMin = 0.2, BmSaleTaintChanceMax = 0.9, BmSaleTaintRatioMin = 0.2, BmSaleTaintRatioMax = 0.8;
         public const int BmSaleHold = 3, BmRatingStart = 90, BmRatingFakeLoss = 10, BmMaxListings = 10;