Update script delegation from GitHub Action

.github/workflows/scripts/check-release-exists.sh

@@ -0,0 +1,21 @@
+#!/usr/bin/env bash
+set -euo pipefail
+
+# check-release-exists.sh
+# Check if a GitHub release already exists for the given version
+# Usage: check-release-exists.sh <version>
+
+if [[ $# -ne 1 ]]; then
+  echo "Usage: $0 <version>" >&2
+  exit 1
+fi
+
+VERSION="$1"
+
+if gh release view "$VERSION" >/dev/null 2>&1; then
+  echo "exists=true" >> $GITHUB_OUTPUT
+  echo "Release $VERSION already exists, skipping..."
+else
+  echo "exists=false" >> $GITHUB_OUTPUT
+  echo "Release $VERSION does not exist, proceeding..."
+fi