fix(tpv): 修正 REnum 表按名查找与 match 分派，恢复 str() 指针强转

str() 对整数(sizet/i64)走 snprintf 十进制格式化(Python 语义)，不是 i8* 强转；用它读 sizet|t.CPtr 联合表元素再 strcmp 永不相等 => _is_renum_class_name 恒 0、变体名查不到(__types.vp:407 bits / :159 Void 根因)。IR 实证 output/a8891afb66d3eda4.text.ll L5551-5558。

- ClassGenEnum: RenumClassNames/RenumVariantNames 读侧统一改 (str)(t.CVoid(x, t.CPtr))；新增 _is_renum_by_entry 与 RenumTableDump；REnum 注册静默早退改 fail-fast

- MatchGenMixin/CallGenMixin: match 分派 2a/2b 与变体构造入口并上 by_entry 判据

- TypeGenResolve: 泛型下标 Phase B 解析不出特化时 fail-fast

- CallGenProp: 泛型特化名末段按括号外点切分

- CompilerFactory/ClassGenBase: REnum 注册表改挂编译期单例

- ClassGenDef: CEnum/REnum 分派歧义 fail-fast

App/lib/core/Gen/MatchGenMixin.vp

@@ -136,8 +136,10 @@ class MatchGenMixin:
                     trans.SymTab, nm.id)
                 entry_annot: str = self.Gen.VarGen.var_annot_class_name(entry)
                 if entry_annot is not None \
-                        and self.Gen.ClassGenEnum._is_renum_class_name(
-                            entry_annot) != 0:
+                        and (self.Gen.ClassGenEnum._is_renum_class_name(
+                            entry_annot) != 0
+                             or self.Gen.ClassGenEnum._is_renum_by_entry(
+                            entry_annot) != 0):
                     is_renum = 1
                     renum_name = entry_annot
                     subject_ptr = self.Gen.VarGen.lookup_var(trans.SymTab, nm.id)
@@ -159,7 +161,8 @@ class MatchGenMixin:
                                 and pat.kind() == ast.ASTKind.MatchClass:
                             rnm: str = self._extract_renum_name_from_cls(pat)
                             if rnm is not None \
-                                    and self.Gen.ClassGenEnum._is_renum_class_name(rnm) != 0:
+                                    and (self.Gen.ClassGenEnum._is_renum_class_name(rnm) != 0
+                                         or self.Gen.ClassGenEnum._is_renum_by_entry(rnm) != 0):
                                 is_renum = 1
                                 renum_name = rnm
                                 if subject_ptr is None: