Add arXiv packaging helper script

aion-holography/scripts/make-arxiv.sh

@@ -0,0 +1,43 @@
+#!/usr/bin/env bash
+set -euo pipefail
+
+# Build and package an arXiv-ready tarball for aion-holography.
+# Output: ax.tar in repository root.
+#
+# Steps:
+#  1. Build main.pdf (to generate an up-to-date main.bbl).
+#  2. Collect only the files arXiv needs: *.tex, Makefile, main.bbl.
+#     (No .bib, .pdf, or aux files.)
+#  3. Strip leading comment lines from .tex sources.
+#  4. Create ax.tar at repo root.
+#
+# Usage: scripts/make-arxiv.sh
+
+ROOT="$(cd "$(dirname "${BASH_SOURCE[0]}")/../.." && pwd)"
+SRC="${ROOT}/aion-holography"
+OUT="${ROOT}/ax.tar"
+
+echo "==> Building PDF to refresh main.bbl"
+cd "${SRC}"
+latexmk -pdf main.tex >/dev/null
+
+echo "==> Assembling arXiv payload"
+WORKDIR="$(mktemp -d "${ROOT}/arxiv.XXXXXX")"
+trap 'rm -rf "${WORKDIR}"' EXIT
+
+# Copy only the needed files.
+rsync -a --prune-empty-dirs \
+  --include 'Makefile' \
+  --include '*.tex' \
+  --include 'main.bbl' \
+  --exclude '*' \
+  "${SRC}/" "${WORKDIR}/"
+
+# Strip full-line comments from .tex sources (keep inline %).
+find "${WORKDIR}" -maxdepth 1 -name '*.tex' -type f -print0 | while IFS= read -r -d '' f; do
+  perl -ni -e 'next if /^\\s*%/; print' "$f"
+done
+
+echo "==> Creating ax.tar at ${OUT}"
+tar -C "${WORKDIR}" -cf "${OUT}" . >/dev/null
+echo "Wrote ${OUT}"