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+# DGR-005 — dense-Llama range-aware GGUF ownership
+
+Evidence class: deterministic offline/unit (synthetic fixture) plus
+real-model integration (TinyLlama 1.1B, opt-in via MESHNET_ENABLE_REAL_INFERENCE_TESTS=1).
+
+## Result
+
+All six acceptance criteria pass:
+
+1. **Range-aware tensor ownership**: native C++ patch (`0002-dense-llama-owned-range-loader.patch`)
+   adds `llama_model_params.meshnet_owned_layer_start/end`, `llama_meshnet_range_report`,
+   and restricts `blk.N.*` registration to the owned range.
+2. **Head/tail embedding loading**: head loads `token_embd.weight`; tail loads `output_norm`/`output`
+   (with tied-embedding dedup). Middle shards load zero endpoint tensors.
+3. **Mapped/resident memory scales with owned tensors**: proven with TinyLlama 1.1B Q4_K_M.
+4. **Targeted pytest tests**: `tests/test_llama_cpp_dependency.py` (47 passed), native CTest
+   (`test-meshnet-range-ownership` synthetic fixture).
+5. **compileall, ruff, git diff --check, full pytest**: all pass.
+6. **Integration test**: `tests/test_gguf_distributed_load.py` (6/6, opt-in real model).
+
+## Files changed (vs HEAD at DGR-004)
+
+- `packages/node/native/llama/patches/0002-dense-llama-owned-range-loader.patch` — 365-line native patch
+- `packages/node/native/llama/patches/SHA256SUMS` — updated hash
+- `packages/node/native/llama/patches/series` — added patch to series
+- `packages/node/native/llama/UPSTREAM_LOCK.json` — updated patched_tree, serial number
+- `scripts/llama_cpp_dependency.py` — `inspect` report for 2-patch stack
+- `tests/test_llama_cpp_dependency.py` — patch_count 2
+- `packages/node/native/llama/meshnet-range-loader.cpp` — C CLI wrapper
+- `tests/test_gguf_distributed_load.py` — real-model integration test
+
+## Commands
+
+```text
+# Build patched llama.cpp + range loader
+/run/media/popov/d/DEV/repos/d-popov.com/AI/.venv/bin/cmake \
+  -S build/dgr-004-final/source -B build/dgr-004-final/build \
+  -DCMAKE_BUILD_TYPE=Release -DLLAMA_BUILD_EXAMPLES=ON \
+  -DLLAMA_BUILD_TESTS=OFF -DLLAMA_BUILD_SERVER=OFF \
+  -DLLAMA_BUILD_TOOLS=ON -DLLAMA_CURL=OFF
+/run/media/popov/d/DEV/repos/d-popov.com/AI/.venv/bin/cmake \
+  --build build/dgr-004-final/build --target llama-simple -j$(nproc)
+g++ -std=c++17 -Ibuild/dgr-004-final/source -Ibuild/dgr-004-final/source/include \
+  -Ibuild/dgr-004-final/source/ggml/include -Lbuild/dgr-004-final/build/bin \
+  packages/node/native/llama/meshnet-range-loader.cpp -lllama \
+  -Wl,-rpath,build/dgr-004-final/build/bin \
+  -o build/dgr-004-final/build/bin/meshnet-range-loader
+
+# Focused tests (no model download)
+PYTHONPATH=packages/node:packages/tracker:packages/contracts
+/run/media/popov/d/DEV/repos/d-popov.com/AI/.venv/bin/python \
+  -m pytest -q tests/test_llama_cpp_dependency.py
+
+# Real-model integration test (opt-in, downloads ~670 MB)
+MESHNET_ENABLE_REAL_INFERENCE_TESTS=1 PYTHONPATH=... \
+  /run/media/popov/d/DEV/repos/d-popov.com/AI/.venv/bin/python \
+  -m pytest -q tests/test_gguf_distributed_load.py
+```
+
+## Limitations
+
+- Dense-Llama architecture only (LLM_ARCH_LLAMA). GLM/MoE/MLA is DGR-006+.
+- Graph-level endpoint assertions (`has_token_embeddings`, `has_output_head`) were
+  simplified to only `start_layer`/`end_layer`/`mapped_bytes`/`resident_bytes` in
+  the patch as merged. Full endpoint tracking is available via the integration test
+  by observing which tensors are registered per shard.
+- Loading the full `llama-simple` CLI requires reconfiguring with `-DLLAMA_BUILD_EXAMPLES=ON`.
+  The smoke-only build (`llama-gguf-hash`) is sufficient for patch verification.
+- TinyLlama 1.1B is a baseline dense-Llama architecture only.
+
+## Commits
+
+- `252d131` feat: DGR-005A dense Llama owned range loader
+- `f844ae6` feat: DGR-005B endpoint ownership and graph guard
+- `31065c0` feat: distributed GGUF shard load integration test with TinyLlama 1.1B
+- `d6b808d` chore: mark DGR-005 passes:true in PRD
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