refactor: worker struct and remove pipe

include/utils/debug.h

@@ -1,6 +1,8 @@
 #ifndef CWS_COLORS_H
 #define CWS_COLORS_H
 
+#include <stdio.h>
+
 /* ANSI color escape sequences */
 #define RED "\033[31m"
 #define GREEN "\033[32m"
@@ -31,4 +33,4 @@
 #define CWS_LOG_WARNING(msg, ...) fprintf(stdout, _WARNING " " msg "\n", ##__VA_ARGS__)
 #define CWS_LOG_INFO(msg, ...) fprintf(stdout, _INFO " " msg "\n", ##__VA_ARGS__)
 
-#endif
+#endif