Make data setup entry point no-option

data-setup/run_data_setup.sh

@@ -3,23 +3,22 @@ set -euo pipefail
 
 usage() {
   cat >&2 <<'EOF'
-Usage: bash data-setup/run_data_setup.sh <option>
+Usage: bash data-setup/run_data_setup.sh
 
-Options:
+Optional maintenance modes:
   --dry-run        check setup scripts only
   --download-only  download source files where scriptable
   --build-test     rebuild inputs from existing local sources
   --compare        compare regenerated inputs with committed data/
-  --full-test      download, rebuild, and compare locally
 EOF
 }
 
-if [ "$#" -ne 1 ]; then
+if [ "$#" -gt 1 ]; then
   usage
   exit 1
 fi
 
-MODE="$1"
+MODE="${1:---full-test}"
 repo_root="$(cd "$(dirname "${BASH_SOURCE[0]}")/.." && pwd -P)"
 cd "$repo_root"