fix: DSL命名不一致 — camelCase→underscore_case (UnderscoredNamingConvention)

DSL YAML字段includeHonors/includeFlowers/wildcardCount等使用了camelCase,
但DslLoader配置了UnderscoredNamingConvention(期望include_honors)。
导致所有DSL的deck配置(字牌/花牌/wildcard)从未生效:
- 武汉: 108张(只有数牌) → 现140张(136+4wildcard)
- 国标: 108张 → 现144张(+花+字)
- 广东: 108张 → 现136张(+花+字)

修复: 4个YAML文件统一改为underscore_case

dsl-examples/guangdong_jipinghu.yaml

@@ -15,8 +15,8 @@ requires:
 
 deck:
   generator: mahjong
-  includeHonors: true
-  includeFlowers: true
+  include_honors: true
+  include_flowers: true
   total: 136
 
 deal:

dsl-examples/guobiao.yaml

@@ -18,8 +18,8 @@ requires:
 
 deck:
   generator: mahjong
-  includeHonors: true
-  includeFlowers: true
+  include_honors: true
+  include_flowers: true
   total: 144
 
 deal:

dsl-examples/wuhan.yaml

@@ -15,10 +15,10 @@ requires:
 
 deck:
   generator: mahjong
-  includeHonors: true
-  includeFlowers: false
-  wildcardTile: 红中
-  wildcardCount: 4
+  include_honors: true
+  include_flowers: false
+  wildcard_tile: 红中
+  wildcard_count: 4
   total: 136
 
 deal:

dsl-examples/xuezhandaodi.yaml

@@ -15,8 +15,8 @@ requires:
 
 deck:
   generator: mahjong
-  includeHonors: false
-  includeFlowers: false
+  include_honors: false
+  include_flowers: false
   total: 108
 
 deal: