feat(ci): replace S3 upload with CI artifacts in compile-services

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

.gitlab-ci.yml

@@ -442,20 +442,11 @@ compile-services:
         strip build-out/services/$bin
       done
     - ls -lh build-out/services/
-    # Upload stripped binaries to MinIO (in-cluster S3)
-    # Trust MinIO CA — rclone (Go) uses system CAs, not RCLONE_CA_CERT for S3.
-    # Container runs non-root, so merge system + MinIO CA into writable /tmp bundle.
-    - cp /etc/ssl/certs/ca-certificates.crt /tmp/ca-bundle.crt 2>/dev/null || true
-    - cat /etc/ssl/minio-ca/ca.crt >> /tmp/ca-bundle.crt 2>/dev/null || true
-    - export SSL_CERT_FILE=/tmp/ca-bundle.crt
-    - export RCLONE_S3_PROVIDER=Minio RCLONE_S3_ENDPOINT=https://minio.foxhunt.svc.cluster.local:9000 RCLONE_S3_REGION=us-east-1
-    - export RCLONE_S3_ACCESS_KEY_ID=$MINIO_ACCESS_KEY RCLONE_S3_SECRET_ACCESS_KEY=$MINIO_SECRET_KEY
-    - |
-      for bin in trading_service api_gateway broker_gateway_service ml_training_service backtesting_service trading_agent_service data_acquisition_service web-gateway; do
-        rclone copyto build-out/services/$bin :s3:foxhunt-binaries/latest/services/$bin
-      done
-    - rclone copy build-out/services/ :s3:foxhunt-binaries/archive/${CI_COMMIT_SHA}/services/
-    - echo "Service binaries uploaded to MinIO"
+    - echo "Service binaries ready as CI artifacts"
+  artifacts:
+    paths:
+      - build-out/services/
+    expire_in: 1 day
 
 # --------------------------------------------------------------------------
 # Stage 3a: Compile training binaries (CPU node, CUDA stubs from ci-builder image)