feat: provide way to build and attach platforms

scripts/check-tag-version.sh

@@ -0,0 +1,18 @@
+#!/usr/bin/env bash
+# Fail unless the release tag matches the crate version.
+# Env: TAG (a leading "v" is tolerated). Run from the repository root.
+
+set -euo pipefail
+: "${TAG:?set TAG to the tag being released}"
+
+here="$(cd "$(dirname "$0")" && pwd)"
+tag="${TAG#v}"
+version="$(bash "$here/version.sh")"
+
+if [ "$tag" != "$version" ]; then
+  echo "tag ${TAG} does not match Cargo.toml version ${version}" >&2
+  exit 1
+fi
+
+echo "tag ${TAG} matches crate version ${version}"
+