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e62221b020
The sglang Python backend inherits the default Status RPC from
backend_pb2_grpc.BackendServicer, which raises NotImplementedError.
LocalAI's backend-monitor polls /backend.Backend/Status periodically on
every registered backend; when the call fails, /backend/monitor returns
HTTP 500 and downstream inference requests to the sglang backend are
blocked even though the model is loaded and answering directly via the
gRPC endpoint.
Add a minimal Status shim that mirrors the existing Health method and
returns StatusResponse{state=READY} unconditionally. This unblocks the
monitor path; a state-aware follow-up (UNINITIALIZED during load, BUSY
under active inference) is left for a subsequent change.
Reproduced on DGX Spark (GB10, arm64-l4t-cuda-13 image) with the sglang
v0.5.15 backend and Qwen3-Coder-Next-NVFP4-GB10; verified locally that
patching the shim in place immediately restores /backend/monitor and
inference across the sglang slot.