Add IP forwarding to entrypoint

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

apps/rego-tunnel/shared/install-cisco-vpn-user-service.sh

@@ -1,25 +0,0 @@
-#!/usr/bin/env bash
-set -euo pipefail
-
-# Installs a systemd *user* service to run Cisco VPN auto-connect in the logged-in GUI session.
-# Intended to be executed inside the VM as the desktop user (not root).
-#
-# Usage:
-#   ./install-cisco-vpn-user-service.sh
-
-SCRIPT_DIR="$(cd "$(dirname "${BASH_SOURCE[0]}")" && pwd)"
-UNIT_SRC="$SCRIPT_DIR/cisco-vpn-connect.service.user"
-UNIT_NAME="cisco-vpn-connect.service"
-
-if [[ ! -f "$UNIT_SRC" ]]; then
-  echo "Missing $UNIT_SRC" >&2
-  exit 1
-fi
-
-mkdir -p "$HOME/.config/systemd/user"
-install -m 0644 "$UNIT_SRC" "$HOME/.config/systemd/user/$UNIT_NAME"
-
-systemctl --user daemon-reload
-systemctl --user enable --now "$UNIT_NAME"
-
-systemctl --user --no-pager --full status "$UNIT_NAME" || true