Add test automation script scaffolds

scripts/integration_tests.sh

@@ -0,0 +1,19 @@
+#!/usr/bin/env bash
+set -euo pipefail
+
+ROOT_DIR="$(cd "$(dirname "$0")/.." && pwd)"
+APP_DIR="$ROOT_DIR/app"
+
+if [ -z "${TDC114_API_BASE:-}" ]; then
+  echo "TDC114_API_BASE is required for integration tests." >&2
+  echo "Example: TDC114_API_BASE=https://staging.example.com $0" >&2
+  exit 64
+fi
+
+if [ ! -d "$APP_DIR/integration_test" ]; then
+  echo "integration test scaffold: $APP_DIR/integration_test does not exist yet." >&2
+  echo "Add Flutter integration tests before enabling this script in CI." >&2
+  exit 2
+fi
+
+"$ROOT_DIR/scripts/flutter-docker.sh" test integration_test