Align release publication policy and runbook

scripts/release.sh

@@ -97,7 +97,7 @@ if [ "$(git rev-parse --verify "refs/tags/$release_version^{commit}")" != "$cand
 fi
 
 if ! git push origin "refs/tags/$release_version:refs/tags/$release_version"; then
-	printf 'release: local tag %s was created but not published; inspect it before retrying\n' "$release_version" >&2
+	printf 'release: tag push for %s failed or is unconfirmed; local tag retained; inspect origin before retrying\n' "$release_version" >&2
 	exit 1
 fi
 printf 'release: published %s at %s\n' "$release_version" "$candidate_commit"