fix: 癞子=136张内的牌(红中)，不是额外+4张 + 宝牌HUD显示

- MahjongTile.ConfigureWildcards: 支持固定wildcard(如红中35)
- IsWildcard: 同时检查encoding 50+和配置的wildcard
- ToString: wildcard牌显示🀫中/🀫发等
- Deck: 固定wildcard作为普通牌加入(红中在136内)
- Deal: fixed类型wildcard不额外加牌
- HUD: 显示 '🀫 宝牌(癞子): 🀫中'
- Wuhan DSL: 移除wildcardCount:4
- 测试: Wuhan牌库136张

RuleEngine.Tests/MahjongRoomIntegrationTests.cs

@@ -55,8 +55,8 @@ public class MahjongRoomIntegrationTests
         room.Deal();
 
         int totalTiles = room.State.Hands.Sum(h => h.Value.Count) + room.State.Deck.Count;
-        // 136 tiles + 4 wildcards = 140
-        Assert.Equal(140, totalTiles);
+        // 136 tiles total (108 numbered + 28 honors, 红中 is wildcard but part of the 136)
+        Assert.Equal(136, totalTiles);
     }
 
     // === Turn flow ===

RuleEngine/AI/HumanMahjongPlayer.cs

@@ -33,6 +33,11 @@ public class HumanMahjongPlayer
             Console.WriteLine($"=== {Name} 的回合 ===");
             Console.WriteLine($"  牌墙: {state.Deck.Count}张 | 弃牌堆: {state.DiscardPool.Count}张");
 
+            // Show wildcard info
+            var wcTiles = MahjongTile.ConfiguredWildcards;
+            if (wcTiles.Count > 0)
+                Console.WriteLine($"  🀫 宝牌(癞子): {string.Join(" ", wcTiles.Select(MahjongTile.ToString))}");
+
             // Show exposed melds
             if (state.Exposed.TryGetValue(Name, out var exposed) && exposed.Count > 0)
             {

RuleEngine/Core/Deck.cs

@@ -10,12 +10,13 @@ public class MahjongDeck
         foreach (var t in allTiles)
         {
             int count = MahjongTile.IsFlower(t) ? 1 : 4;
-            // Wildcards are handled by AllTiles already
-            if (MahjongTile.IsWildcard(t)) continue;
+            // Skip extra encoding-50+ wildcards (they're added separately below)
+            // But include fixed wildcards (e.g. 红中) as normal tiles
+            if (t >= MahjongTile.WildcardBase) continue;
             for (int i = 0; i < count; i++)
                 Tiles.Add(t);
         }
-        // Add wildcards separately
+        // Add extra wildcard tiles
         for (int i = 0; i < wildcardCount; i++)
             Tiles.Add(MahjongTile.WildcardBase + i);
     }

RuleEngine/Core/MahjongTile.cs

@@ -6,7 +6,19 @@ public static class MahjongTile
     // Encoding: 万1-9=1-9, 条1-9=11-19, 筒1-9=21-29
     // 字: 东=31,南=32,西=33,北=34,中=35,发=36,白=37
     // 花: 春=41..菊=48
-    // 宝牌: 50-59
+    // 宝牌: 50-59 (extra wildcards added to deck)
+
+    private static readonly HashSet<int> _wildcards = new();
+
+    /// <summary>Configure which normal tiles (e.g. 红中=35) also act as wildcards.</summary>
+    public static void ConfigureWildcards(IEnumerable<int> tiles)
+    {
+        _wildcards.Clear();
+        foreach (var t in tiles) _wildcards.Add(t);
+    }
+
+    /// <summary>Get the set of normal tiles configured as wildcards.</summary>
+    public static IReadOnlySet<int> ConfiguredWildcards => _wildcards;
 
     public static int Encode(string suit, int rank)
     {
@@ -24,6 +36,7 @@ public static class MahjongTile
         if (tile >= 1 && tile <= 9) return $"{tile}万";
         if (tile >= 11 && tile <= 19) return $"{tile - 10}条";
         if (tile >= 21 && tile <= 29) return $"{tile - 20}筒";
+        if (_wildcards.Contains(tile)) return $"🀫{TileName(tile)}";
         return tile switch
         {
             31 => "东", 32 => "南", 33 => "西", 34 => "北",
@@ -35,6 +48,13 @@ public static class MahjongTile
         };
     }
 
+    private static string TileName(int tile) => tile switch
+    {
+        31 => "东", 32 => "南", 33 => "西", 34 => "北",
+        35 => "中", 36 => "发", 37 => "白",
+        _ => $"?{tile}"
+    };
+
     /// 0=万, 1=条, 2=筒, 3=字, 4=花, 5=宝牌
     public static int Suit(int tile)
     {
@@ -64,7 +84,7 @@ public static class MahjongTile
 
     public static bool IsHonor(int tile) => tile >= 31 && tile <= 37;
     public static bool IsFlower(int tile) => tile >= 41 && tile <= 48;
-    public static bool IsWildcard(int tile) => tile >= 50 && tile <= 59;
+    public static bool IsWildcard(int tile) => tile >= 50 && tile <= 59 || _wildcards.Contains(tile);
     public static bool IsNumbered(int tile) => tile >= 1 && tile <= 29;
     public static bool IsTerminal(int tile)
     {

RuleEngine/MahjongRoom.cs

@@ -438,7 +438,25 @@ public class MahjongRoom
         int perPlayer = _rules.Deal.CardsPerPlayer;
         bool includeFlowers = _rules.Deck.IncludeFlowers;
         bool includeHonors = _rules.Deck.IncludeHonors;
-        int wildcardCount = _rules.WildcardRules != null ? _rules.Deck.WildcardCount : 0;
+
+        // Configure fixed wildcards (e.g. Wuhan 红中)
+        int wildcardCount = 0;
+        if (_rules.WildcardRules != null)
+        {
+            if (_rules.WildcardRules.Type == "fixed" && _rules.WildcardRules.Tiles != null)
+            {
+                // Fixed wildcards: specified tiles ARE the wildcards, not extra tiles
+                var wcTiles = _rules.WildcardRules.Tiles
+                    .Select(t => t switch { "红中" => 35, "发财" => 36, "白板" => 37, _ => -1 })
+                    .Where(t => t > 0).ToArray();
+                MahjongTile.ConfigureWildcards(wcTiles);
+                wildcardCount = 0; // No extra tiles
+            }
+            else
+            {
+                wildcardCount = _rules.Deck.WildcardCount;
+            }
+        }
 
         var deck = new MahjongDeck(includeHonors, includeFlowers, wildcardCount);
         deck.Shuffle(_rng);
@@ -479,8 +497,6 @@ public class MahjongRoom
 
     private void CheckTing()
     {
-        bool hasWildcard = _rules.WildcardRules != null;
-        int wildcardCount = hasWildcard ? _rules.Deck.WildcardCount : 0;
         bool require258 = _rules.WinCondition?.PairMustBe258 ?? false;
 
         // All possible tiles that could be drawn (numbered 1-9 across 3 suits + 7 honors)
@@ -500,8 +516,10 @@ public class MahjongRoom
                 int alreadyHave = hand.Count(t => t == tile);
                 if (alreadyHave >= 4) continue; // can't draw more of this tile
 
+                var handWithTile = new List<int>(hand) { tile };
+                int wc = CountWildcardsInHand(handWithTile);
                 var r = _solver.CheckWin(hand, newTile: tile,
-                    wildcardCount: wildcardCount, require258Pair: require258);
+                    wildcardCount: wc, require258Pair: require258);
                 if (r != null && r.IsWin) { ting = true; break; }
             }
 

dsl-examples/wuhan.yaml

@@ -17,8 +17,6 @@ deck:
   generator: mahjong
   include_honors: true
   include_flowers: false
-  wildcard_tile: 红中
-  wildcard_count: 4
   total: 136
 
 deal: