- **PEFT adapter merging.** `model_loader.py` auto-detects PEFT adapters (e.g. `facebook/Meta-SecAlign-8B`), merges on CPU in bf16, and caches the merged model to disk. No config flags needed.
- **Configurable quantization.** `quantization:` field in YAML or `--quantization` on CLI, accepting `nf4`, `fp4`, or `int8`. Replaces the old `load_in_4bit` boolean.
- **Multi-GPU sharding.** `device_map:` in configs or `--device-map` on CLI. Config value is now correctly read from YAML presets (was previously ignored).
- **CLI overrides.** New `--model`, `--device-map`, `--quantization` flags to override preset values from the command line.
- **SecAlign injection presets.** Configs for prompt injection on Meta-SecAlign-8B and 70B (default + Optuna-tuned), using new `AlpacaInjectionSource` — generates 3-role prompts from AlpacaFarm data with trusted/untrusted separation.
- **Fixes.** `BenchmarkRunner.summarize()` crash when all runs are skipped. System prompt suppression now works correctly (`""` suppresses model defaults, `None` omits the turn).
Co-authored-by: Peter Romov <peter@romov.com>
Co-authored-by: Alexander Panfilov <39771221+kotekjedi@users.noreply.github.com>
Peter Romov