in internal/util/util.go [164:170]
func RemovePID(fname string, logger *log.Logger) {
if err := os.Remove(fname); err != nil {
logger.Error("failed to remove PID file", zap.String("name", fname), zap.Error(err))
} else {
logger.Debug("PID file removed", zap.String("name", fname))
}
}