Linux: AppImage, deb, rpm and Arch packages from one AppDir, installed to /opt/ely-office (L1.5)

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

tests/scripts/linux-pins.sh

@@ -0,0 +1,33 @@
+#!/usr/bin/env bash
+# Every Linux packaging tool downloaded matches its pinned hash.
+set -euo pipefail
+
+root=$(cd "$(dirname "$0")/../.." && pwd)
+script=$root/packaging/linux/package.sh
+fail() {
+  echo "FAIL: $*" >&2
+  exit 1
+}
+
+pack=https://github.com/AppImage/appimagetool/releases/download/1.9.1
+deploy=https://github.com/linuxdeploy/linuxdeploy/releases/download/1-alpha-20251107-1
+runtime=https://github.com/AppImage/type2-runtime/releases/download/20251108
+nfpm=https://github.com/goreleaser/nfpm/releases/download/v2.47.0
+curl -fsSI --max-time 20 "$pack/appimagetool-x86_64.AppImage" >/dev/null 2>&1 || {
+  echo "SKIP linux-pins: GitHub is not reachable"
+  exit 0
+}
+grep -q "$pack/appimagetool-\$arch.AppImage" "$script" || fail "the script downloads another appimagetool"
+grep -q "$deploy/linuxdeploy-\$arch.AppImage" "$script" || fail "the script downloads another linuxdeploy"
+grep -q "$runtime/runtime-\$arch" "$script" || fail "the script downloads another runtime"
+grep -q "$nfpm/nfpm_2.47.0_Linux_\$nfpm_arch.tar.gz" "$script" || fail "the script downloads another nfpm"
+grep -q -- '--runtime-file "\$runtime"' "$script" || fail "appimagetool fetches its own runtime"
+for pair in x86_64:x86_64 aarch64:arm64; do
+  arch=${pair%:*}
+  for url in "$pack/appimagetool-$arch.AppImage" "$deploy/linuxdeploy-$arch.AppImage" "$runtime/runtime-$arch" \
+    "$nfpm/nfpm_2.47.0_Linux_${pair#*:}.tar.gz"; do
+    sha=$(curl -fsSL "$url" | shasum -a 256 | cut -d' ' -f1)
+    grep -q "$sha" "$script" || fail "$url has sha256 $sha, which the script does not pin"
+  done
+done
+echo "linux-pins: 8 downloads match their pins"