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.scratch/distributed-gguf-runtime/issues/05-local-llamacpp-gguf-backend.md

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+# 05 — Local llama.cpp/GGUF backend
+
+Status: ready-for-agent
+
+## What to build
+
+Add a local full-model GGUF backend so a node that can hold a GGUF model can serve it through the existing node API. This is the immediate CPU-performance path and the baseline for later distributed llama.cpp work.
+
+## Acceptance criteria
+
+- [ ] A node can start with backend `llama.cpp` or `gguf` for a local full-model GGUF artifact.
+- [ ] The node can answer an OpenAI-compatible chat completion through the existing API.
+- [ ] Startup and registration clearly report backend, quantization/artifact metadata, context cap, and local model path.
+- [ ] The PyTorch backend remains unchanged and selectable.
+- [ ] A smoke test or script validates backend wiring with a small GGUF model or a stubbed llama.cpp process.
+- [ ] A benchmark command can compare local PyTorch CPU and local GGUF CPU for the same small supported model when both are available.
+
+## Blocked by
+
+None - can start immediately.