Finish Electron shell and workflow wiring

scripts/bootstrap-offline.sh

@@ -0,0 +1,24 @@
+#!/usr/bin/env bash
+
+set -euo pipefail
+
+ROOT_DIR="$(cd "$(dirname "${BASH_SOURCE[0]}")/.." && pwd)"
+cd "$ROOT_DIR"
+
+for cmd in node npm tar; do
+  if ! command -v "$cmd" >/dev/null 2>&1; then
+    echo "Missing required tool: $cmd" >&2
+    exit 1
+  fi
+done
+
+if command -v dpkg-deb >/dev/null 2>&1; then
+  echo "dpkg-deb available"
+else
+  echo "dpkg-deb not available; Linux .deb packaging will be skipped" >&2
+fi
+
+node - <<'NODE'
+const pkg = require('./package.json');
+console.log(`StepForge ${pkg.version} bootstrap OK`);
+NODE