refactor: update K8s, CI, Docker, Prometheus, scripts, and FXT CLI for api rename

- K8s: rename api-gateway → api manifests, delete web-gateway, update network policies
- CI: rename compile/deploy jobs, delete web-gateway jobs
- Docker: rename service in compose files
- Prometheus: update scrape targets and alert rules
- Scripts: update binary references in build/test/cert scripts
- FXT CLI: rename api_gateway_url → api_url (with serde alias for compat)

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

infra/scripts/build-and-push.sh

@@ -23,7 +23,7 @@ TIMESTAMP=$(date -u +"%Y%m%d-%H%M%S")
 
 # Services built with Dockerfile.service (--build-arg SERVICE=<name>)
 STANDARD_SERVICES=(
-  api-gateway
+  api
   trading-service
   trading-agent-service
   ml-training-service
@@ -37,7 +37,6 @@ DRY_RUN=false
 PARALLEL=1
 SELECTED_SERVICES=()
 SKIP_STANDARD=false
-SKIP_WEBGW=false
 SKIP_TRAINING=false
 TAG_LATEST=true
 
@@ -49,7 +48,6 @@ Options:
   --no-push              Build only, don't push to registry
   --dry-run              Show what would be built
   --services "s1 s2"     Build only these standard services
-  --skip-webgw           Skip web-gateway build
   --skip-training        Skip training image build
   --parallel N           Run N builds concurrently (default: 1)
   --no-latest            Don't tag images as :latest
@@ -62,7 +60,6 @@ while [[ $# -gt 0 ]]; do
     --no-push)        DO_PUSH=false; shift ;;
     --dry-run)        DRY_RUN=true; shift ;;
     --services)       IFS=' ' read -ra SELECTED_SERVICES <<< "$2"; shift 2 ;;
-    --skip-webgw)     SKIP_WEBGW=true; shift ;;
     --skip-training)  SKIP_TRAINING=true; shift ;;
     --parallel)       PARALLEL="$2"; shift 2 ;;
     --no-latest)      TAG_LATEST=false; shift ;;
@@ -74,7 +71,6 @@ done
 # If --services was given, use only those; otherwise use all standard services
 if [[ ${#SELECTED_SERVICES[@]} -gt 0 ]]; then
   SERVICES=("${SELECTED_SERVICES[@]}")
-  SKIP_WEBGW=true
   SKIP_TRAINING=true
 else
   SERVICES=("${STANDARD_SERVICES[@]}")
@@ -195,16 +191,6 @@ else
   done
 fi
 
-# ---------------------------------------------------------------------------
-# Build web-gateway (Dockerfile.web-gateway)
-# ---------------------------------------------------------------------------
-
-if [[ "$SKIP_WEBGW" != "true" ]]; then
-  echo ""
-  echo "--- Web Gateway ---"
-  build_and_tag "web-gateway" "infra/docker/Dockerfile.web-gateway" || true
-fi
-
 # ---------------------------------------------------------------------------
 # Build training image (Dockerfile.training)
 # ---------------------------------------------------------------------------
@@ -227,10 +213,6 @@ if [[ "$DO_PUSH" == "true" ]]; then
     push_image "$svc"
   done
 
-  if [[ "$SKIP_WEBGW" != "true" ]]; then
-    push_image "web-gateway"
-  fi
-
   if [[ "$SKIP_TRAINING" != "true" ]]; then
     push_image "training"
   fi

infra/scripts/smoke-test.sh

@@ -87,23 +87,23 @@ check "QuestDB HTTP health" \
   "
 
 # --- 4. Services ----------------------------------------------------------
-section "Services (gRPC + web-gateway)"
+section "Services (gRPC + API gateway)"
 
 for svc in "${GRPC_SERVICES[@]}"; do
   check "Pod '${svc}' is Running" \
     bash -c "kubectl -n ${NAMESPACE} get pods -l app=${svc} --field-selector=status.phase=Running --no-headers 2>/dev/null | grep -q ."
 done
 
-check "Pod 'web-gateway' is Running" \
-  bash -c "kubectl -n ${NAMESPACE} get pods -l app=web-gateway --field-selector=status.phase=Running --no-headers 2>/dev/null | grep -q ."
+check "Pod 'api' is Running" \
+  bash -c "kubectl -n ${NAMESPACE} get pods -l app=api --field-selector=status.phase=Running --no-headers 2>/dev/null | grep -q ."
 
-# --- 5. Web gateway health ------------------------------------------------
-section "Web Gateway Health"
+# --- 5. API gateway health ------------------------------------------------
+section "API Gateway Health"
 
-check "web-gateway /health returns 200" \
+check "api /health returns 200" \
   bash -c "
-    CLUSTER_IP=\$(kubectl -n ${NAMESPACE} get svc web-gateway -o jsonpath='{.spec.clusterIP}' 2>/dev/null)
-    PORT=\$(kubectl -n ${NAMESPACE} get svc web-gateway -o jsonpath='{.spec.ports[0].port}' 2>/dev/null)
+    CLUSTER_IP=\$(kubectl -n ${NAMESPACE} get svc api -o jsonpath='{.spec.clusterIP}' 2>/dev/null)
+    PORT=\$(kubectl -n ${NAMESPACE} get svc api -o jsonpath='{.spec.ports[0].port}' 2>/dev/null)
     kubectl -n ${NAMESPACE} run smoke-curl --rm -i --restart=Never --image=curlimages/curl -- \
       curl -sf http://\${CLUSTER_IP}:\${PORT}/health
   "