RED: embedding-backend-native does not exist. No CFFI llama binding.
GREEN (REPL progress):
- cffi:define-foreign-library libllama → loaded
- defcstruct with correct sizes (verified via C sizeof program):
llama-mparams (72 bytes), llama-cparams (136 bytes), llama-batch (56)
- Field offsets verified via C offsetof program
- llama_backend_init discovered as required prerequisite
- llama-model-default-params correctly fills 72-byte struct (verified)
- llama-embedding CLI verified: 768-dim vectors, 22ms/4tokens
BLOCKED: llama_model_load_from_file segfaults via CFFI. Suspect struct-by-value
vs pointer ABI mismatch on x86-64. Needs interactive SBCL REPL to debug the
calling convention (structs >16 bytes passed by hidden reference on SysV).
CFFI bindings preserved in org/system-model-embedding-native.org for
continued REPL work. Includes: model load, context create, tokenize,
encode, embeddings-ith, batch init/free.
Model: nomic-embed-text-v1.5.Q4_K_M.gguf (80MB, 768-dim, nomic-bert)
at ~/.local/share/passepartout/models/
