Document packaging and release artifacts

packaging/build-package.sh

@@ -1,9 +1,14 @@
 #!/bin/bash
 # SPDX-License-Identifier: GPL-3.0-or-later
 # Build the Arch package from the repo root.
-set -e
+set -eu
 cd "$(dirname "$0")"
+command -v makepkg >/dev/null 2>&1 || {
+    echo "error: makepkg not found; install pacman/base-devel tooling first" >&2
+    exit 127
+}
 echo "Building enodia-sentinel package..."
-makepkg -f --noconfirm
+umask 022
+makepkg -f --cleanbuild --noconfirm
 mv -f *.pkg.tar.zst ../ 2>/dev/null || true
 echo "Done. Install with:  sudo pacman -U enodia-sentinel-*.pkg.tar.zst"