* Studio: fall back to text-only when llama.cpp is too old for a model's vision projector
Loading a GGUF vision model starts llama-server with --mmproj <projector>. When the installed llama.cpp prebuilt predates the model's projector format, llama-server aborts at startup with 'clip.cpp: Unknown projector type' (exit -6), and the whole load failed even though the base GGUF is a fine text/tools chat model. Seen with gemma-4 on a 3-day-old prebuilt (build b9496).
load_model now retries the launch once without --mmproj when the captured startup output indicates a projector-format incompatibility. The retry runs the model text-only, marks the session non-vision (is_vision False, mmproj audio dropped) so the status/capabilities the frontend reads stay consistent, and warns the user to update llama.cpp. Detection is generic, not model-specific, and conservative: OOM, bad GGUF, port-bind, missing-file and other failures keep their existing handling and never retry. If the text-only retry also fails, it errors out with the real reason.
Adds _is_projector_incompatibility and _strip_mmproj_args (unit-tested with the real gemma-4 abort plus negatives) and extracts _start_llama_process so both the initial start and the retry share one spawn path and each logs its argv.
* [pre-commit.ci] auto fixes from pre-commit.com hooks
for more information, see https://pre-commit.ci
* Reformat mmproj fallback files to match main (ruff line-length 100 + kwarg spacing)
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Co-authored-by: pre-commit-ci[bot] <66853113+pre-commit-ci[bot]@users.noreply.github.com>
Co-authored-by: danielhanchen <michaelhan2050@gmail.com>
