按推荐建议，继续执行

结论：已将 LinuxCNC 5axiskins 及 switchkins 相关源码纳入 vendored manifest、native probe 和文档验证链，完整 native 验证通过。

wasm-port/vendor/linuxcnc/src/rtapi/rtapi_ctype.h

@@ -0,0 +1,24 @@
+#ifndef __LINUXCNC_RTAPI_CTYPE_H
+#define __LINUXCNC_RTAPI_CTYPE_H
+//    Copyright 2006 Jeff Epler
+//
+//    This program is free software; you can redistribute it and/or modify
+//    it under the terms of the GNU General Public License as published by
+//    the Free Software Foundation; either version 2 of the License, or
+//    (at your option) any later version.
+//
+//    This program is distributed in the hope that it will be useful,
+//    but WITHOUT ANY WARRANTY; without even the implied warranty of
+//    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+//    GNU General Public License for more details.
+//
+//    You should have received a copy of the GNU General Public License
+//    along with this program; if not, write to the Free Software
+//    Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
+#ifdef MODULE
+#include <linux/ctype.h>
+#else
+#include <ctype.h>
+#endif
+
+#endif