https://github.com/ggml-org/llama.cpp/tree/master/tools/server#using-multiple-models
models_directory
│
│ # single file
├─ llama-3.2-1b-Q4_K_M.gguf
├─ Qwen3-8B-Q4_K_M.gguf
│
│ # multimodal
├─ gemma-3-4b-it-Q8_0
│ ├─ gemma-3-4b-it-Q8_0.gguf
│ └─ mmproj-F16.gguf # file name must start with "mmproj"
