feat: 计分倍数可配置化 (自摸/点炮/庄家)

ScoringDslConfig + ScoringConfig 新增:
- self_draw_multiplier (默认1): 自摸每家付 baseFan × N
- discard_win_multiplier (默认3): 放炮者付 baseFan × N
- dealer_multiplier (默认1): 庄家输赢 × N

ScoreEngine.Settle:
- 硬编码 *3 → 读 DiscardWinMultiplier
- 庄家倍数: dealerWon→所有人付倍数; 闲家赢→仅庄家付倍数

南昌麻将 DSL: self_draw=1, discard_win=1, dealer=2

58 tests pass, 5 variants all 0 errors

RuleEngine/Dsl/DslLoader.cs

@@ -234,6 +234,9 @@ public class ScoringDslConfig
     public string Mode { get; set; } = "fan_table";
     public int MaxCap { get; set; } = int.MaxValue;
     public List<PreHookConfig> PreHooks { get; set; } = new();
+    public int SelfDrawMultiplier { get; set; } = 1;  // 自摸: 每家付 baseFan × N
+    public int DiscardWinMultiplier { get; set; } = 3; // 点炮: 放炮者付 baseFan × N (默认3=传统包赔)
+    public int DealerMultiplier { get; set; } = 1;     // 庄家: 庄家输赢 × N
 }
 public class FlowerDslConfig
 {

RuleEngine/MahjongRoom.cs

@@ -51,7 +51,10 @@ public class MahjongRoom
             JiHuSelfDrawOnly = _rules.WinRule?.JiHuSelfDrawOnly ?? false,
             FlowerNormalScore = _rules.FlowerRules?.Scoring?.Normal ?? 0,
             FlowerMatchScore = _rules.FlowerRules?.Scoring?.Matching?.Value ?? 0,
-            FlowerMapping = _rules.FlowerRules?.Scoring?.Matching?.Mapping
+            FlowerMapping = _rules.FlowerRules?.Scoring?.Matching?.Mapping,
+            SelfDrawMultiplier = _rules.Scoring.SelfDrawMultiplier,
+            DiscardWinMultiplier = _rules.Scoring.DiscardWinMultiplier,
+            DealerMultiplier = _rules.Scoring.DealerMultiplier
         }, _solver, fanConfig);
 
         // Init state

RuleEngine/Scoring/ScoreEngine.cs

@@ -13,6 +13,9 @@ public class ScoringConfig
     public int FlowerNormalScore { get; set; } = 0;
     public int FlowerMatchScore { get; set; } = 0;
     public Dictionary<int, List<string>>? FlowerMapping { get; set; }
+    public int SelfDrawMultiplier { get; set; } = 1;
+    public int DiscardWinMultiplier { get; set; } = 3;
+    public int DealerMultiplier { get; set; } = 1;
 }
 
 public class MahjongScoreEngine
@@ -71,19 +74,29 @@ public class MahjongScoreEngine
 
         if (isSelfDraw)
         {
+            int perPlayerPay = baseFan * _config.SelfDrawMultiplier;
+            bool dealerWon = (state.Dealer == winner);
             foreach (var p in state.AlivePlayers)
             {
                 if (p == winner) continue;
-                state.Scores[p] = (state.Scores.GetValueOrDefault(p) - baseFan);
-                state.Scores[winner] = (state.Scores.GetValueOrDefault(winner) + baseFan);
+                // 庄家赢→每家付倍数; 闲家赢→仅庄家付倍数
+                int mul = (dealerWon || p == state.Dealer) ? _config.DealerMultiplier : 1;
+                int pay = perPlayerPay * mul;
+                state.Scores[p] = (state.Scores.GetValueOrDefault(p) - pay);
+                state.Scores[winner] = (state.Scores.GetValueOrDefault(winner) + pay);
             }
         }
         else
         {
             if (state.LastDiscardPlayer != null && state.LastDiscardPlayer != winner)
             {
-                state.Scores[state.LastDiscardPlayer] = (state.Scores.GetValueOrDefault(state.LastDiscardPlayer) - baseFan * 3);
-                state.Scores[winner] = (state.Scores.GetValueOrDefault(winner) + baseFan * 3);
+                int discardPay = baseFan * _config.DiscardWinMultiplier;
+                // 庄家赢了或庄家放炮→加倍
+                bool dealerInvolved = (state.Dealer == winner || state.Dealer == state.LastDiscardPlayer);
+                int mul = dealerInvolved ? _config.DealerMultiplier : 1;
+                int pay = discardPay * mul;
+                state.Scores[state.LastDiscardPlayer] = (state.Scores.GetValueOrDefault(state.LastDiscardPlayer) - pay);
+                state.Scores[winner] = (state.Scores.GetValueOrDefault(winner) + pay);
             }
         }
     }

dsl-examples/nanchang.yaml

@@ -97,4 +97,7 @@ phases:
 
 scoring:
   mode: fan_table
-  max_cap: 999
+  max_cap: 999
+  self_draw_multiplier: 1   # 自摸每家付1倍
+  discard_win_multiplier: 1  # 放炮付1倍(南昌麻将放炮不翻倍)
+  dealer_multiplier: 2       # 庄家输赢×2