fix(TransPyV): 修正形参/字段链节点的注解为 llvmlite.ParamNode*

c 类（源码违规）：这些变量由 new_param_node 构造、或取自 get_struct_fields /

param_list_append / function_get_param_head，实际是 llvmlite.ParamNode 链节点，

注解却写成 llvmlite.Function*。旧的无条件指针 bitcast 掩盖了该错误，严格指针规则下暴露。

涉及：VarGenMixin / CallGenVt / VpiReader / ClassGenEnum / ClassGenVTable /

ExprGenName / FuncGenMixin / FuncGenDef / TypeGenResolve / TypeSpec /

StmtGenCifMixin / AssignGenMixin（纯注解替换，零语义变化）。15 行。

App/lib/Stub/StubGen/VpiReader.vp

@@ -1419,8 +1419,10 @@ def _resolve_vpi_ret_annot_str(pool: memhub.MemBuddy*,
             inner_len_t += 1
         if ret_annot[6 + inner_len_t] != ']' or inner_len_t == 0:
             return None
-        tup_head_t: llvmlite.Function* = None
-        tup_tail_t: llvmlite.Function* = None
+        # tuple 返回类型的字段链表是 llvmlite.ParamNode（new_param_node / paramnode_set_next /
+        # Struct 形参均为 rawptr[ParamNode]）——原先误注解为 Function*。
+        tup_head_t: llvmlite.ParamNode* = None
+        tup_tail_t: llvmlite.ParamNode* = None
         tup_count_t: int = 0
         p_t: sizet = 0
         while p_t < inner_len_t:
@@ -1444,7 +1446,7 @@ def _resolve_vpi_ret_annot_str(pool: memhub.MemBuddy*,
                 stdlib.free(seg_buf_t)
                 if seg_ty_t is None:
                     return None
-                tup_node_t: llvmlite.Function* = llvmlite.new_param_node(pool, seg_ty_t)
+                tup_node_t: llvmlite.ParamNode* = llvmlite.new_param_node(pool, seg_ty_t)
                 if tup_node_t is None:
                     return None
                 if tup_head_t is None: