Add disk image support installer helper

scripts/install_disk_images_support.sh

@@ -0,0 +1,20 @@
+#!/usr/bin/env bash
+set -euo pipefail
+
+APP_DIR="${VIRTUALITY_APP_DIR:-/opt/virtuality/web}"
+REPO_DIR="$(cd "$(dirname "${BASH_SOURCE[0]}")/.." && pwd)"
+DISK_IMAGES_DIR="/var/lib/virtuality/disk-images"
+
+mkdir -p "$DISK_IMAGES_DIR"
+chmod 755 "$DISK_IMAGES_DIR"
+
+if [[ -f "${REPO_DIR}/scripts/patch_disk_images.py" ]]; then
+  python3 "${REPO_DIR}/scripts/patch_disk_images.py" "${APP_DIR}/app.py"
+else
+  echo "patch_disk_images.py not found" >&2
+  exit 1
+fi
+
+systemctl restart virtuality-web.service
+
+echo "Disk image support installed. Open: /disk-images"