fix: update template, prevent double-spaced persisted kernel logs

template/sysroot/include/libc/stdio.h

@@ -95,6 +95,17 @@ int    ungetc(int c, FILE *stream);
 char  *fgets(char *s, int size, FILE *stream);
 int    fputs(const char *s, FILE *stream);
 
+/* MontaukOS extension: non-blocking readiness probe for stdin.
+   Returns 1 when a complete line is buffered, so a following fgets/fgetc on
+   stdin returns without blocking; 0 otherwise. Partially typed input is kept.
+   This is what a select()-style poll over stdin has to be built on -- stdio
+   descriptors are not waitable kernel objects. */
+int    montauk_stdin_ready(void);
+
+/* Blocks until a complete line is buffered on stdin, then returns 1. Same
+   buffer as montauk_stdin_ready(); nothing is consumed either way. */
+int    montauk_stdin_wait(void);
+
 void   perror(const char *s);
 FILE  *tmpfile(void);
 char  *tmpnam(char *s);