refactor(gen): P5 对象化迁移完成 - FuncGenMixin/ClassGenMixin 全量迁移+委托层; 泛型模板表迁入 gen 字段; stub 方法 ParamCount 不含 self(修复跨模块方法调用默认参数填充错位); 默认参数快照失败 fail-fast(防悬空 AST UAF); HandlesMatch 改委托 gen._lookup_renum_variant

App/lib/core/Handles/HandlesMatch.vp

@@ -172,20 +172,14 @@ class MatchHandle(HandlesBase.Mixin):
 
     # ============================================================
     # _find_renum_class_for_variant - 从变体名反查 REnum 类名
+    #
+    # P5-2 后 REnum 变体表迁入 gen 字段（RenumClassNames/RenumClassCount），
+    # 模块级 _renum_class_* 已失效，统一委托到 gen._lookup_renum_variant。
     # ============================================================
     def _find_renum_class_for_variant(self, variant_name: str) -> str:
         if variant_name is None:
             return None
-        i: int = 0
-        while i < HandlesClassDef._renum_class_count:
-            cls_nm: str = HandlesClassDef._renum_class_names[i]
-            if cls_nm is not None:
-                tag: int = HandlesClassDef._lookup_renum_variant_in_class(
-                    cls_nm, variant_name)
-                if tag >= 0:
-                    return cls_nm
-            i = i + 1
-        return None
+        return HandlesClassDef._lookup_renum_variant(variant_name)
 
     # ============================================================
     # _has_no_break - 检测 case body 是否含 c.NoBreak() 调用