memo_template: add new article-class memo template

Replaces the assignment_template with a memo-format template based
on the article class. The look-and-feel is ported from the old
cdsc-memo chapterstyle in cdsc-memoir.sty: a single-line "TITLE
[hfill] AUTHOR" header and sans-serif uppercase section headings.

Like the migrated paper_template, this builds with lualatex and
produces a tagged, PDF/UA-2 compliant PDF. verapdf --flavour ua2:
0 failures, 1723 passed rules.

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

memo_template/text.tex

@@ -0,0 +1,106 @@
+% Tagged PDF (PDF/UA-2) accessibility setup. The article class works
+% with the LaTeX tagging-project, so we use the full \DocumentMetadata
+% path here.
+\DocumentMetadata{
+  pdfversion=2.0,
+  pdfstandard=ua-2,
+  lang=en-US,
+}
+
+\documentclass[12pt]{article}
+
+\usepackage{cdsc-memo}
+\usepackage{tagpdf}
+\tagpdfsetup{activate-all}
+
+\usepackage{fontspec}
+\setmainfont{EB Garamond}
+\setsansfont{TeX Gyre Heros}
+
+\usepackage[letterpaper,left=1.65in,right=1.65in,top=1.3in,bottom=1.2in]{geometry}
+
+% packages i use in essentially every document
+\usepackage{graphicx}
+\usepackage{enumerate}
+
+% packages i use in many documents but leave off by default
+% \usepackage{amsmath, amsthm, amssymb}
+% \usepackage{dcolumn}
+
+% urls and colors
+\usepackage[dvipsnames]{xcolor}
+\usepackage[breaklinks]{hyperref}
+
+% pdftitle/pdfauthor populate PDF and XMP metadata; keep these in sync
+% with \title{} and \author{} below. UA-2 requires dc:title in XMP.
+\hypersetup{colorlinks=true, linkcolor=Black, citecolor=Black, filecolor=Blue,
+    urlcolor=Blue, unicode=true,
+    pdftitle={Memo Title},
+    pdfauthor={Your Name},
+    pdflang={en-US},
+    pdfdisplaydoctitle=true}
+
+% list of footnote symbols for \thanks{}
+\makeatletter
+\renewcommand*{\@fnsymbol}[1]{\ensuremath{\ifcase#1\or *\or \dagger\or \ddagger\or
+ \mathsection\or \mathparagraph\or \|\or **\or \dagger\dagger
+  \or \ddagger\ddagger \else\@ctrerr\fi}}
+\makeatother
+\newcommand*\samethanks[1][\value{footnote}]{\footnotemark[#1]}
+
+% add bibliographic stuff
+\usepackage[american]{babel}
+\usepackage{csquotes}
+\usepackage[natbib=true, style=apa, backend=biber]{biblatex}
+\addbibresource{refs.bib}
+\DeclareLanguageMapping{american}{american-apa}
+
+\defbibheading{secbib}[\bibname]{%
+  \section*{#1}%
+  \markboth{#1}{#1}%
+  \baselineskip 14.2pt}
+
+\def\citepos#1{\citeauthor{#1}'s (\citeyear{#1})}
+\def\citespos#1{\citeauthor{#1}' (\citeyear{#1})}
+
+% LATEX NOTE: these lines will import vc stuff after running `make vc`,
+% which adds a git revision footer to each page:
+% \input{vc}
+% \pagestyle{cdsc-page-memo-git}
+
+\begin{document}
+
+\setlength{\parskip}{4.5pt}
+\baselineskip 16pt
+
+\title{Memo Title}
+\author{Your Name}
+
+\maketitle
+
+\section{Section}
+
+The quick brown fox jumps over the lazy dog. The quick brown fox jumps
+over the lazy dog. The quick brown fox jumps over the lazy dog. The
+quick brown fox jumps over the lazy dog. The quick brown fox jumps over
+the lazy dog \citep{989866}.
+
+\section{Another Section}
+
+The quick brown fox jumps over the lazy dog. The quick brown fox jumps
+over the lazy dog. The quick brown fox jumps over the lazy dog. The
+quick brown fox jumps over the lazy dog.
+
+\subsection{A Subsection}
+
+The quick brown fox jumps over the lazy dog. The quick brown fox jumps
+over the lazy dog.
+
+% bibliography
+\setcounter{biburlnumpenalty}{9001}
+\printbibliography[title = {References}, heading=secbib]
+
+
+\end{document}
+
+%  LocalWords: