fix(match): default case body 的 dbody 类型推断退化 list[int] 截断指针

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dbody = dmc.children（普通赋值）触发 TPC 对跨模块属性访问
ast.MatchCase.children 的 RHS 类型推断，失败时静默退化为 list[int]，
dbody.get() 被编译成 list[int].get（返回 i32），AST 节点指针被截断为
0x0000c1120bd0 → translate_stmt 读 vtable 崩溃（EnumTest RENUM match ASan）。

与 case body 循环（body_list 用带注解 AnnAssign，类型稳定正确）对照，
default 块改用带注解的 AnnAssign 中转（dbody2）保持
list[ast.AST | t.CPtr] 类型。三处同型修复（_handle_renum_match /
_handle_sequence_match / _handle_tuple_match）。

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TermiNexus committed 2026-08-21 08:46:45 +08:00

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App/lib/core/Gen/MatchGenMixin.vp

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