chore(syntax): Test 仓 R1 + R12 迁移

R1：T | t.CPtr -> T*（40 文件 / 1121 处；含多级 **、强转位 (T*)(x)、下标内 list[AST*]）；引号前向引用 'Rect' | t.CPtr 26 处按例外保留，T | t.CPtr | t.State 25 处因 T* 后不能接 | 保持原联合写法。

R12：i = 0 + while i < N: + 尾 i += 1 -> or i in range(N):（10 文件 / 42 处；含 <= -> range(EXPR + 1)、带注解初始化 i: int = 0、尾 i = i + 1）。余 20 处经守卫判定不可安全改写（复合条件 1、尾部非自增 8、体内重绑定/continue 5、while-else 2、循环后仍被读取 2、找不到初始化 2）。

StringTest/App/main.vp

@@ -6,13 +6,13 @@ import w32.win32memory
 
 def test_strlen():
     testcheck.section("Test 1: strlen")
-    s: char | t.CPtr = "Hello, World!"
+    s: char* = "Hello, World!"
     length: uint64 = string.strlen(s)
     testcheck.check(length == 13, "strlen (len=13)", "strlen (expect 13)")
 
 def test_strcpy():
     testcheck.section("Test 2: strcpy")
-    buf: char | t.CPtr = w32.win32memory.VirtualAlloc(None, 64, 12288, 4)
+    buf: char* = w32.win32memory.VirtualAlloc(None, 64, 12288, 4)
     if uint64(buf) == 0:
         stdio.printf("SKIP: VirtualAlloc returned NULL\n")
         return
@@ -23,14 +23,14 @@ def test_strcpy():
 
 def test_strcat():
     testcheck.section("Test 3: strcat (via memcpy)")
-    buf: char | t.CPtr = w32.win32memory.VirtualAlloc(None, 64, 12288, 4)
+    buf: char* = w32.win32memory.VirtualAlloc(None, 64, 12288, 4)
     if uint64(buf) == 0:
         stdio.printf("SKIP: VirtualAlloc returned NULL\n")
         return
     string.memset(buf, 0, 64)
     # 手动拼接: 先拷贝 "Hello"，再拷贝 " World"
-    hello: char | t.CPtr = "Hello"
-    world: char | t.CPtr = " World"
+    hello: char* = "Hello"
+    world: char* = " World"
     string.memcpy(buf, hello, 5)
     string.memcpy(t.CPtr(uint64(buf) + 5), world, 6)
     cmp_result: int = string.strcmp(buf, "Hello World")
@@ -45,7 +45,7 @@ def test_strcmp():
 
 def test_strncpy():
     testcheck.section("Test 5: strncpy")
-    buf: char | t.CPtr = w32.win32memory.VirtualAlloc(None, 64, 12288, 4)
+    buf: char* = w32.win32memory.VirtualAlloc(None, 64, 12288, 4)
     if uint64(buf) == 0:
         stdio.printf("SKIP: VirtualAlloc returned NULL\n")
         return
@@ -56,13 +56,13 @@ def test_strncpy():
 
 def test_char_access():
     testcheck.section("Test 6: char access")
-    s: char | t.CPtr = "ABCDE"
+    s: char* = "ABCDE"
     val: uint8 = s[2]  # 'C' = 67
     testcheck.check(val == 67, "char access (s[2]=67='C')", "char access (s[2] expect 67)")
 
 def test_snprintf():
     testcheck.section("Test 7: snprintf")
-    buf: char | t.CPtr = w32.win32memory.VirtualAlloc(None, 128, 12288, 4)
+    buf: char* = w32.win32memory.VirtualAlloc(None, 128, 12288, 4)
     if uint64(buf) == 0:
         stdio.printf("SKIP: VirtualAlloc returned NULL\n")
         return