SMG gRPC Proto Definitions

smg-grpc-proto provides the Protocol Buffer definitions and generated Python gRPC stubs for the Shepherd Model Gateway (SMG). These definitions enable communication with SMG, a universal gateway supporting various LLM inference engines like SGLang, vLLM, and TRT-LLM. While the main SMG project undergoes rapid development (currently v1.4.x), this library provides the stable API surface for gRPC interaction. The current version is 0.4.6, with updates typically tied to major SMG feature releases.