feat(gen): typedef 源文本归一 C 式 const/T*（R16）

TPV 的 typedef 注册走裸源码扫描，需与 TPC 同形：_parse_typedef_line 把右值的前导 const/volatile 归一为 t.CConst | / t.CVolatile |、末尾 * 归一为 | t.CPtr；register_ctypedef_from_source 的缓冲 320->512 以容纳展开后的文本。

App/lib/core/Gen/Type/TypeGenCType.vp

@@ -419,8 +419,10 @@ class TypeGenCType(TypeGenBase.TypeGenBase):
         src_len: sizet = string.strlen(src)
         count: int = 0
         line_start: sizet = 0
-        # line parse buffer ("NAME\0VALUE\0"), reused per file (register_ctypedef copies)
-        td_buf: str = pool.alloc(320)
+        # line parse buffer ("NAME\0VALUE\0"), reused per file (register_ctypedef copies).
+        # 512 (not 320): _parse_typedef_line normalizes a C-style RHS (`const T` / `T*`) into
+        # the longer canonical `|` union text, so the VALUE area must hold the expanded form.
+        td_buf: str = pool.alloc(512)
         for i in range(src_len + 1):
             if i == src_len or src[i] == '\n':
                 line_len: sizet = i - line_start

App/lib/core/Gen/Type/TypeGenResolve.vp

@@ -978,9 +978,44 @@ novirtual class TypeGenResolve(TypeGenBase.TypeGenBase):
             out_buf[ci] = buf[line_start + name_s + ci]
             ci += 1
         out_buf[name_l] = '\0'
-        for ci in range(vlen):
-            out_buf[name_l + 1 + ci] = buf[line_start + vs + ci]
-        out_buf[name_l + 1 + vlen] = '\0'
+        # Normalize a C-style typedef RHS (`const T` / `T*`) into the canonical `|` union text,
+        # mirroring TPC's TypeAnnotationResolver._NormalizeTypedefRhsText: leading const/volatile
+        # become `t.CConst |` / `t.CVolatile |`, trailing `*` runs become ` | t.CPtr`. Text without
+        # these forms is copied verbatim (byte-identical to the pre-normalization behavior).
+        pos: sizet = name_l + 1
+        k: sizet = vs
+        while True:
+            if k + 6 <= ve and string.strncmp(buf + line_start + k, "const", 5) == 0 and (buf[line_start + k + 5] == ' ' or buf[line_start + k + 5] == '\t'):
+                string.memcpy(out_buf + pos, "t.CConst | ", 11)
+                pos += 11
+                k += 6
+            elif k + 9 <= ve and string.strncmp(buf + line_start + k, "volatile", 8) == 0 and (buf[line_start + k + 8] == ' ' or buf[line_start + k + 8] == '\t'):
+                string.memcpy(out_buf + pos, "t.CVolatile | ", 14)
+                pos += 14
+                k += 9
+            else:
+                break
+            while k < ve and (buf[line_start + k] == ' ' or buf[line_start + k] == '\t'): k += 1
+        ptrs: sizet = 0
+        ve2: sizet = ve
+        while ve2 > k and buf[line_start + ve2 - 1] == '*':
+            ptrs += 1
+            ve2 -= 1
+            while ve2 > k and (buf[line_start + ve2 - 1] == ' ' or buf[line_start + ve2 - 1] == '\t'): ve2 -= 1
+        vlen2: sizet = ve2 - k
+        if vlen2 > 190: vlen2 = 190
+        # Output capacity guard (register_ctypedef_from_source allocates 512 bytes for NAME\0VALUE\0).
+        if pos + vlen2 + ptrs * 11 > 500:
+            if pos + ptrs * 11 >= 500: ptrs = 0
+            if pos + ptrs * 11 >= 500: vlen2 = 0
+            else: vlen2 = 500 - pos - ptrs * 11
+        for ci2 in range(vlen2):
+            out_buf[pos + ci2] = buf[line_start + k + ci2]
+        pos += vlen2
+        for pi in range(ptrs):
+            string.memcpy(out_buf + pos, " | t.CPtr", 9)
+            pos += 9
+        out_buf[pos] = '\0'
         return 1
     def _lookup_builtins_typedef(self, pool: memhub.MemBuddy*, name: str) -> str:
         """Last-match fallback: look up a CTypedef declared in includes/builtins.vp."""