bulk changes

core/print.h

@@ -4,6 +4,15 @@
 #include <stdarg.h>
 #include <stdio.h>
 
-int printfn(char *, ...);
+/**
+ * Print a formatted message to stderr with program prefix and newline
+ * @param format Format string (printf-style)
+ * @param ... Variable arguments for formatting
+ * @return Number of characters printed
+ */
+int print_error_with_prefix(char *format, ...);
+
+/* Legacy function name for backward compatibility */
+#define printfn print_error_with_prefix
 
 #endif