fix: check-prod-stack checks the 4 frontends, not stale fe0

scripts/check-prod-stack.sh

@@ -47,8 +47,17 @@ echo "=== be0 → minio:9000 (HTTP) ==="
 echo "OK"
 
 echo ""
-echo "=== fe0 → be0 proxy env ==="
-"${COMPOSE[@]}" exec -T fe0 /bin/sh -c 'echo "VITE_DEV_PROXY_TARGET=${VITE_DEV_PROXY_TARGET:-<unset>}"'
+echo "=== frontends serving (nginx static builds) ==="
+for svc_port in \
+  "frontend_user:${FE_PORT}" \
+  "frontend_admin:${FE_ADMIN_PORT:-8082}" \
+  "frontend_investigator:${FE_INV_PORT:-8083}" \
+  "frontend_publisher:${FE_PUB_PORT:-8084}"; do
+  svc="${svc_port%%:*}"; port="${svc_port##*:}"
+  code=$(curl -s -m5 -o /dev/null -w '%{http_code}' "http://127.0.0.1:${port}" || echo 000)
+  echo "  ${svc} :${port} -> ${code}"
+  [[ "$code" == "200" ]] || { echo "  ${svc} not serving (HTTP ${code})"; exit 1; }
+done
 
 echo ""
 printf 'Done. If be0 /health failed, read logs: docker compose --env-file .env -f docker-compose.prod.yml logs be0\n'