Propagate web-search cancellation

scripts/test-web-search-candidate.sh

@@ -6,9 +6,10 @@ IMAGE="${CONTEXT_KIT_WEB_SEARCH_CANDIDATE_IMAGE:-context-kit/web-search-mcp:qual
 NETWORK="context-kit-web-quality-$RANDOM-$$"
 MOCK="${NETWORK}-mock"
 SERVER="${NETWORK}-server"
+BRIDGE="${NETWORK}-bridge"
 
 cleanup() {
-  docker rm -f "${SERVER}" "${MOCK}" >/dev/null 2>&1 || true
+  docker rm -f "${BRIDGE}" "${SERVER}" "${MOCK}" >/dev/null 2>&1 || true
   docker network rm "${NETWORK}" >/dev/null 2>&1 || true
 }
 trap cleanup EXIT
@@ -18,17 +19,38 @@ docker run -d --name "${MOCK}" --network "${NETWORK}" --ip 203.0.113.10 \
   --network-alias mock-search.test \
   -v "${ROOT}/scripts/fixtures/web/mock-server.mjs:/fixture/mock-server.mjs:ro" \
   node:22-bookworm-slim node /fixture/mock-server.mjs >/dev/null
-docker run -d --name "${SERVER}" --network "${NETWORK}" --ip 203.0.113.11 \
+docker run -d --init --name "${SERVER}" --network "${NETWORK}" --ip 203.0.113.11 \
+  --network-alias web-search-mcp \
   -p 127.0.0.1::8000 \
   -e SEARXNG_URL=http://mock-search.test:8080 \
   -e DEFAULT_SEARCH_PROVIDER=searxng \
   "${IMAGE}" >/dev/null
 
+[[ "$(docker inspect -f '{{.HostConfig.Init}}' "${SERVER}")" == true ]] || {
+  printf 'candidate web-search container does not use Docker init\n' >&2
+  exit 1
+}
+
 binding="$(docker port "${SERVER}" 8000/tcp)"
 port="${binding##*:}"
 for _ in {1..120}; do
   if curl -fsS "http://127.0.0.1:${port}/healthz" >/dev/null 2>&1; then
     node "${ROOT}/scripts/test-web-search-candidate.mjs" "http://127.0.0.1:${port}/mcp"
+    node "${ROOT}/scripts/test-web-search-stdio-cancellation.mjs" \
+      docker run --rm --init -i --name "${BRIDGE}" --network "${NETWORK}" \
+      --entrypoint mcp-proxy "${IMAGE}" --transport streamablehttp "http://web-search-mcp:8000/mcp"
+    docker exec "${SERVER}" sh -eu -c '
+      for status in /proc/[0-9]*/status; do
+        while IFS=: read -r key value; do
+          if [ "$key" = State ]; then
+            case "$value" in
+              *Z*) printf "zombie process found in %s: %s\n" "$status" "$value" >&2; exit 1 ;;
+            esac
+            break
+          fi
+        done < "$status"
+      done
+    '
     exit 0
   fi
   sleep 0.25