test(update): cover saved choices and unattended quick previews

scripts/test-quick-update.sh

@@ -0,0 +1,6 @@
+#!/usr/bin/env bash
+set -euo pipefail
+case "${1:-}" in ''|--summary) ;; *) printf 'Unknown argument: %s\n' "$1" >&2; exit 1 ;; esac
+root=$(cd -- "$(dirname -- "${BASH_SOURCE[0]}")/.." && pwd)
+python3 "$root/scripts/test-quick-update.py"
+printf 'Tests: PASS | quick update selection\n'