aioboto3 was listed as a dependency for async sagemaker calls but is not
imported anywhere in the codebase — async calls use httpx + botocore SigV4
instead. Removing it eliminates the unresolvable botocore version conflict
between boto3 and aiobotocore, along with all grep -v / --no-deps workarounds
across Dockerfiles and CI.
Also addresses Greptile review feedback: collapse redundant grpcio
python-version markers, bump pyproject.toml cryptography to 46.0.5 to
match Docker (GHSA-r6ph-v2qm-q3c2), and fix misleading .npmrc comment.
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
