chore: import upstream snapshot with attribution

docs/source/en/community_integrations/llama_cpp.md

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+
+# llama.cpp
+
+[llama.cpp](https://github.com/ggml-org/llama.cpp) is a C/C++ inference engine for deploying large language models locally. It's lightweight and doesn't require Python, CUDA, or other heavy server infrastructure. llama.cpp uses the [GGUF](https://huggingface.co/blog/ngxson/common-ai-model-formats#gguf) file format. GGUF supports quantized model weights and memory-mapping to reduce memory bandwidth on your device.
+
+> [!TIP]
+> Browse the [Hub](https://huggingface.co/models?apps=llama.cpp&sort=trending) for models already available in GGUF format.
+
+Convert any Transformers model to GGUF format with the [convert_hf_to_gguf.py](https://github.com/ggml-org/llama.cpp/blob/master/convert_hf_to_gguf.py) script.
+
+```bash
+python3 convert_hf_to_gguf.py ./models/openai/gpt-oss-20b \
+  --outfile gpt-oss-20b.gguf \
+```
+
+Deploy the model locally from the command line with [llama-cli](https://github.com/ggml-org/llama.cpp/tree/master#llama-cli) or start a web UI with [llama-server](https://github.com/ggml-org/llama.cpp/tree/master#llama-server). Add the `-hf` flag to indicate the model is from the Hub.
+
+<hfoptions id="deploy">
+<hfoption id="llama-cli">
+
+```bash
+llama-cli -hf ggml-org/gpt-oss-20b-GGUF
+```
+
+</hfoption>
+<hfoption id="llama-server">
+
+```bash
+llama-server -hf ggml-org/gpt-oss-20b-GGUF
+```
+
+</hfoption>
+</hfoptions>
+
+## Transformers integration
+
+1. [`AutoConfig.from_pretrained`] loads the model's `config.json` file to extract metadata.
+2. [`AutoTokenizer.from_pretrained`] extracts the vocabulary and tokenizer configuration.
+3. Based on the `architectures` field in the config, the script selects a converter class from its internal registry. The registry maps Transformers architecture names (like [`LlamaForCausalLM`]) to corresponding converter classes.
+4. The converter maps Transformers tensor names (for example, `model.layers.0.self_attn.q_proj.weight`) to GGUF tensor names, transforms tensors, and packages the vocabulary.
+5. The output is a single GGUF file containing the model weights, tokenizer, and metadata.
+
+## Resources
+
+- [llama.cpp](https://github.com/ggml-org/llama.cpp) documentation
+- [Introduction to ggml](https://huggingface.co/blog/introduction-to-ggml) blog post