在目录中放置方案列表

Question

我正在使用chemmacros包——特别是它的scheme模块——来生成计划清单. （注：chemmacros该软件包最近已更新，以便与book班级。）

我也在使用tocloft包来更改图表列表和表格列表的数字宽度。

在以下 MWE 中，为什么计划清单作为子条目出现表格列表在目录中？如何获取计划清单作为单独的条目出现在目录？

\documentclass[oneside,11pt]{book}

\usepackage[semibold,tt=false]{libertine}
\usepackage{libertinust1math}
\usepackage[font={sf,small},labelsep=quad,labelfont=sc]{caption}
\usepackage[subrefformat=parens]{subcaption}
\usepackage[
  expansion = false ,
  tracking = smallcaps ,
  letterspace = 40 ,
]{microtype}
\usepackage{booktabs}
\usepackage{acro}
\acsetup{
  barriers/use, barriers/reset,
  use-id-as-short,
}
\usepackage[capitalize]{cleveref}
\usepackage{chemformula}
\setchemformula{charge-hshift=.5pt}
\usepackage{chemmacros}
\usechemmodule{scheme}
\usepackage{graphicx}
\usepackage[titles]{tocloft}
\setlength{\cftfignumwidth}{2.9em}
\setlength{\cfttabnumwidth}{2.9em}

\begin{document}

\tableofcontents

\addcontentsline{toc}{chapter}{\listfigurename}
\listoffigures

\addcontentsline{toc}{chapter}{\listtablename}
\listoftables

\addcontentsline{toc}{scheme}{\listschemename}
\listofschemes

\chapter{First chapter}
Refer to \cref{fig:firstfig} using cleveref package.
Refer to \cref{tbl:firsttbl}.
Refer to scheme, \cref{scm:firstscheme}.
% Example figure
\begin{figure}[!h]
  \centering
  \includegraphics[width=0.02\textwidth]{example-image}
  \caption{Caption of figure in first chapter.}\label{fig:firstfig}
\end{figure}

% Example table 
\begin{table}[!h]
  \centering
  \begin{tabular}{ll}
    \toprule
    A & B\\
    \bottomrule
  \end{tabular}
  \caption{Caption of table in first chapter.}\label{tbl:firsttbl}
\end{table}

\begin{scheme}[!h]
  \centering
  \includegraphics[width=0.02\textwidth]{example-image-a}
  \caption{Caption of first scheme.}\label{scm:firstscheme}
\end{scheme}

\end{document}