\documentclass{jss}
\usepackage{amsmath}

\author{Placeholder Author\\Placeholder Institution}
\title{A Clean Placeholder Vignette}

\Abstract{
  This vignette triggers no \code{jss-lint} violations. It is the
  placeholder-clean smoke fixture used by the \code{eval-jss} harness
  during Phase A until real CRAN vignettes replace it.
}

\Keywords{placeholder, clean, smoke}
\Plainkeywords{placeholder, clean, smoke}

\begin{document}
\section{Introduction}

See \cite{smith2020} for background.

\end{document}
