Limit active listings to 10

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

src/Decentralized.Domain/Tuning.cs

@@ -101,11 +101,11 @@ namespace Decentralized.Domain
         /// <summary>货架上除违禁品外的两类货：高科技物品（需中档声望）和显卡的出现概率、加价（在现货溢价 / 订单价之外再加），显卡里夹假卡的比例、是全新卡（成色 100、封条完好、不会是假卡）的概率。</summary>
         public const double BmTechChance = 0.30, BmGpuChance = 0.30, BmTechMarkup = 0.5, BmGpuMarkup = 0.2, BmGpuFake = 0.20, BmGpuNew = 0.15;
         /// <summary>玩家上架出售：标价倍率范围（相对参考价）、上架费、成交抽成、成交后货款托管天数、假卡被买家看穿的概率；
-        /// 倍率 ≤0.9 / 1.0 / 1.8 时的期望成交天数（之间插值）；货款带污点的概率与比例随倍率从下限涨到上限；卖家好评的初始值、看穿一次扣的点数。</summary>
+        /// 倍率 ≤0.9 / 1.0 / 1.8 时的期望成交天数（之间插值）；货款带污点的概率与比例随倍率从下限涨到上限；卖家好评的初始值、看穿一次扣的点数、同时上架的件数上限。</summary>
         public const double BmListFee = 0.05, BmCommission = 0.08, BmSellMin = 0.6, BmSellMax = 1.8, BmFakeDetect = 0.5;
         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;
+        public const int BmSaleHold = 3, BmRatingStart = 90, BmRatingFakeLoss = 10, BmMaxListings = 10;
         /// <summary>商家货架：每周的商家数（从 6 种类型里抽）、每家的货种数、每种货的库存范围；大宗商家出现概率、库存范围、送货天数；
         /// 各类商家的价格系数范围（订单价 = 基础价 × 系数）；批量折扣档（件数、折扣）。</summary>
         public const int BmMerchantCount = 5, BmMerchantListings = 4, BmQtyMin = 3, BmQtyMax = 6, BmBulkQtyMin = 10, BmBulkQtyMax = 25, BmBulkDays = 6;