LaTeX preamble

thefermion-preamble.sty

%% thefermion-preamble.sty
%% Riasat Sheikh

\NeedsTeXFormat{LaTeX2e}
\ProvidesPackage{thefermion-preamble}[2024/10/15 v.0.5]

% Option handling
\newif\ifnotes % Define a conditional flag
\DeclareOption{notes}{
  \notestrue
}
\DeclareOption*{} % Default for unrecognized options
\ProcessOptions\relax

\usepackage{newtxtext} % Times-like fonts with math support

% AMS math and physics packages
\PassOptionsToPackage{tbtags}{amsmath}
\usepackage{mathtools,physics}

\ifnotes
  % jheppub conflicting packages disabled when notes option is active
  \usepackage{jheppub} % Load jheppub when notes option is used
  \gdef\@fpheader{Notes of Riasat Sheikh}

  \toccontinuoustrue
\else
  % Geometry and fonts
  \usepackage[a4paper, total={6.5in, 10in}]{geometry}
  \usepackage{newtxtext, newtxmath}


  % defining the author section
  \usepackage{authblk}

  % Bibliography and referencing
  \usepackage[numbers,sort&compress]{natbib}

  % Hyperlink colors
  \usepackage[colorlinks=true
    ,urlcolor=blue
    ,anchorcolor=blue
    ,citecolor=blue
    ,filecolor=blue
    ,linkcolor=blue
    ,menucolor=blue
    ,linktocpage=true
    ,pdfa=true
    ,unicode=true
    ,psdextra
  ]{hyperref}


  % Question counters
  \newcounter{questioncounter}
  \newcounter{equestioncounter}

  % Line spacing and indentation
  \renewcommand{\baselinestretch}{1.2}\normalsize
  \setlength\parindent{1.2\parindent}
\fi

% Clever referencing
\usepackage{cleveref}