test: add local 2x2 route topology

e2e/scripts/down.sh

@@ -0,0 +1,19 @@
+#!/usr/bin/env bash
+set -euo pipefail
+
+source "$(dirname "$0")/lib.sh"
+
+for ((index=${#E2E_NODES[@]} - 1; index >= 0; index--)); do
+    compose_node "${E2E_NODES[index]}" down --remove-orphans
+done
+compose_control down --remove-orphans
+
+label=$(docker network inspect \
+    -f '{{ index .Labels "archive-control.e2e" }}' \
+    "$E2E_NETWORK" 2>/dev/null || true)
+if [[ "$label" == "true" ]]; then
+    docker network rm "$E2E_NETWORK" >/dev/null
+fi
+
+printf 'E2E containers stopped; bind-mounted runtime state was retained.\n'
+