fix(sizeof,parse): 尺寸链去静默兜底，解析报错可定位，补 C 解析器缺口

StructGen: _get_struct_size/_get_align 去 opaque→8/ptr_size、未知→4 兜底并补 VectorType；LiteralStructType.fields→.elements（llvmlite 无 fields，必然 AttributeError）

HandlesClassDef: union 载荷尺寸经不存在的 ir.DataLayout 静默退化成 8 字节；HandlesExprCall/ExprBuiltin: sizeof 各静默 0 分支改 fail-fast，数组元素 sizeof 统一走 _get_struct_size

HandlesFor: nonlocal struct/array 堆分配不再退化成 malloc(8)

vast/vast_c: 补一元 * / & 解析，装饰器后 extern/export 分派修复，C 侧报错带 token 与行号；StubGen.Converter: 宏展开丢尾随空行修 .pyi 缩进非法

其余为 rawptr 迁移 / fail-fast 口径等历史改动一并入库

lib/core/Handles/HandlesFunctions.py

@@ -898,7 +898,7 @@ class FunctionHandle(BaseHandle):
         if '[' in replacement:
             SubNode: ast.AST | None = None
             try:
-                SubNode = ast.parse(replacement, mode='eval').body
+                SubNode = ast.parse(replacement, '<stub:type_expr>', mode='eval').body
             except Exception:
                 SubNode = None
             if not isinstance(SubNode, ast.Subscript):
@@ -936,7 +936,7 @@ class FunctionHandle(BaseHandle):
             slice_node = self._make_replacement_node(inner_name)
         else:
             try:
-                slice_node = ast.parse(inner_name, mode='eval').body
+                slice_node = ast.parse(inner_name, '<stub:type_expr>', mode='eval').body
             except Exception:
                 slice_node = self._make_name_node(inner_name)
         if slice_node is None:
@@ -1627,8 +1627,10 @@ class FunctionHandle(BaseHandle):
             if Arg.annotation:
                 try:
                     PInfo = self.ResolveAnnotationType(Arg.annotation)
-                    if PInfo and (PInfo.DataConst or PInfo.VarConst):
-                        Gen.var_const_flags[Arg.arg] = True
+                    # const/volatile 形参登记（统一登记入口）。const 判据沿用形参历史
+                    # 条件（IsParam=True，见 BaseGen.RegisterVarQualifiers 说明）；
+                    # volatile / pointee-volatile 与 TransPyV 侧同口径。
+                    Gen.RegisterVarQualifiers(Arg.arg, PInfo, Arg.annotation, IsParam=True)
                 except Exception as _e:
                     if _config_mode == "strict":
                         self.Trans.LogWarning(f"异常被忽略: {_e}")
@@ -2140,6 +2142,10 @@ class FunctionHandle(BaseHandle):
         Gen.var_struct_class = {}
         Gen.var_ptr_element = {}
         Gen.var_const_flags = {}
+        # const/volatile 的**函数作用域层**随函数出栈清空（模块级层 global_* 与
+        # 类字段层 field_* 是持久的，不在此清；见 BaseGen 的登记说明）。
+        Gen.var_volatile_flags = {}
+        Gen.var_pointee_volatile_flags = {}
         # 恢复保存的 var_type_info
         Gen.var_type_info = saved_var_type_info
         Gen.var_type_assignments = saved_var_type_assignments