Add 1-page short CV variant, ORCID, profile photo, pre-commit hook

- cv-short.tex: two-column paracol layout (66/34) with curated content
  in the left column and an "at a glance" sidebar on the right.
  Locally tightens parskip, \cvsection and \cvevent so everything fits
  on a single A4 page, and redefines the sidebar list helper \sbitem
  to replace altacv's non-wrapping tikz \cvtag in the narrow column.
- chapters/short/{current,education,grants-selected,products,
  pubs-selected,sidebar}.tex: hand-curated highlight content
  (top 6 publications, top 6 grants, condensed two-line products,
  stats + recognition + leadership + research-focus sidebar blocks).
- chapters/header.tex / preamble.tex: ORCID 0000-0001-7512-8541
  via a new \orcid info field (faOrcid icon); blog field for
  giorgio.gilest.ro.
- images/gilestro.png: profile photo, used only by the short CV via
  altacv's circular \photoR.
- hooks/pre-commit + `make install-hooks`: rebuilds every variant on
  any .tex/.cls/Makefile change, aborts the commit on build failure,
  and stages refreshed PDFs into pdf/.
- Makefile: short target, hook-install target, dep glob extended to
  chapters/short/*.tex so the short build refreshes when its sources
  change.

cv-short.tex

@@ -0,0 +1,78 @@
+% ============================================================
+%  cv-short.tex  --  1-2 page highlight CV
+%  Two-column layout via paracol: main content left, "at a glance"
+%  + recognition tags in the right sidebar.
+%  Build with: make short
+% ============================================================
+\documentclass[10pt,a4paper,ragged2e,withhyper]{altacv}
+
+\input{preamble.tex}
+\usepackage{paracol}
+
+% Narrow page margins for a denser look.
+\geometry{left=1.2cm,right=1.2cm,top=1.2cm,bottom=1.2cm,columnsep=0.9cm}
+
+% Sidebar visual: light grey background colour for the right column.
+\definecolor{SidebarBG}{HTML}{F4F4F4}
+
+% Tighter section spacing for the short variant.
+\renewcommand{\cvsectionfont}{\Large\bfseries}
+\renewcommand{\cvsubsectionfont}{\normalsize\bfseries}
+\setlength{\parskip}{1pt}
+
+% Compress \cvsection: less top whitespace, thinner rule.
+\renewcommand{\cvsection}[2][]{%
+  \nointerlineskip\medskip%
+  {\color{heading}\cvsectionfont\MakeUppercase{#2}}\\[-0.6ex]%
+  {\color{headingrule}\rule{\linewidth}{1.4pt}\par}\smallskip
+}
+
+% Compress \cvevent: drop trailing \medskip.
+\makeatletter
+\renewcommand{\cvevent}[4]{%
+  {\large\color{emphasis}#1\par}
+  \smallskip\normalsize
+  \ifstrequal{#2}{}{}{\textbf{\color{accent}#2}\par\smallskip}%
+  \ifstrequal{#3}{}{}{%
+    {\small\makebox[0.5\linewidth][l]{\cvDateMarker~#3}}}%
+  \ifstrequal{#4}{}{}{%
+    {\small\makebox[0.5\linewidth][l]{\cvLocationMarker~#4}}}\par
+  \smallskip\normalsize
+}
+\makeatother
+
+% Compact one-item-per-line list for the sidebar (replaces \cvtag pills,
+% which can't wrap inside the narrow column).
+\newcommand{\sbitem}[1]{%
+  \par\noindent\textcolor{accent}{\small\faAngleRight}~\small #1\par%
+}
+
+\begin{document}
+
+% Photo (short CV only). altacv default: circular crop, no \normalphoto opt.
+\photoR{2.2cm}{images/gilestro}
+
+% Full-width header at the top
+\input{chapters/header.tex}
+
+% Two columns: main (left, 66%) / sidebar (right, 34%)
+\columnratio{0.66}
+\setlength{\columnsep}{2em}
+\setlength{\columnseprule}{0pt}
+\begin{paracol}{2}
+
+% =============== MAIN COLUMN (left) ===========================
+\input{chapters/short/current.tex}
+\input{chapters/short/education.tex}
+\input{chapters/short/grants-selected.tex}
+\input{chapters/short/products.tex}
+\input{chapters/short/pubs-selected.tex}
+
+\switchcolumn
+
+% =============== SIDEBAR (right) ==============================
+\input{chapters/short/sidebar.tex}
+
+\end{paracol}
+
+\end{document}