What changed

• Promote grpcio, grpcio-reflection, and grpcio-health-checking into base Python package dependencies.
• Regenerate the plain Python requirement lockfiles for 3.10, 3.11, and 3.12 so no-extra installs include those packages.
• Add a small pyproject regression test for the UI runtime dependency set.

Why

feast ui now mounts the REST registry routes. That path imports feast.registry_server, which imports grpc, grpc_health, and grpc_reflection at module import time. In feast==0.64.1.dev6529, those packages are only installed with the grpcio extra, so a plain pip install feast==0.64.1.dev6529 fails to start feast ui with ModuleNotFoundError.

This keeps the default package install aligned with the runtime imports used by the UI.

Validation

• Clean no-extra install from this branch with python3.12 -m venv /tmp/feast-ui-grpc-deps-check && pip install .
• Verified imports after the no-extra install:
  • import grpc
  • from grpc_health.v1 import health
  • from grpc_reflection.v1alpha import reflection
  • from feast.registry_server import RegistryServer
  • from feast.ui_server import get_app
• Directly executed test_ui_runtime_grpc_dependencies_are_base_dependencies
• git diff --check

Note: local pytest collection in an ad hoc env was blocked by unrelated environment issues (minio missing without test extras, then Python 3.12 distutils missing through pytest-timeout). CI should run with the repo's normal test environment.