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.

Makefile

@@ -14,12 +14,18 @@ DOCKER_RUN = docker run --rm \
   -e TEXINPUTS=.:./tex-vendor: \
   $(DOCKER_IMAGE)
 
-.PHONY: all full clean shell
-all: full
+.PHONY: all full short clean shell install-hooks
+all: full short
+
+# Activate the pre-commit hook that rebuilds every variant on commit.
+# Run once after cloning, or after a fresh checkout.
+install-hooks:
+	git config core.hooksPath hooks
+	@echo "Hooks path set to ./hooks  --  pre-commit will rebuild all variants on .tex/.cls/Makefile changes."
 
 # Pattern rule: build/<name>.pdf is built from <name>.tex by running xelatex twice
 # (twice to settle cross-references / hyperref).
-$(BUILD_DIR)/%.pdf: %.tex preamble.tex $(wildcard chapters/*.tex) | $(BUILD_DIR)
+$(BUILD_DIR)/%.pdf: %.tex preamble.tex $(wildcard chapters/*.tex) $(wildcard chapters/short/*.tex) | $(BUILD_DIR)
 	$(DOCKER_RUN) $(ENGINE) -interaction=nonstopmode -halt-on-error \
 	    -output-directory=$(BUILD_DIR) $<
 	$(DOCKER_RUN) $(ENGINE) -interaction=nonstopmode -halt-on-error \
@@ -28,7 +34,8 @@ $(BUILD_DIR)/%.pdf: %.tex preamble.tex $(wildcard chapters/*.tex) | $(BUILD_DIR)
 $(BUILD_DIR):
 	mkdir -p $(BUILD_DIR)
 
-full: $(BUILD_DIR)/cv-full.pdf
+full:  $(BUILD_DIR)/cv-full.pdf
+short: $(BUILD_DIR)/cv-short.pdf
 
 # Drop into an interactive TeX-Live shell (handy for debugging).
 shell: