peft tensorboard safetensors mistral alignment-handbook generated_from_trainer trl sft dataset:ajrogier/conversational-PCRA-and-CCRA-sections base_model:HuggingFaceH4/zephyr-7b-beta base_model:adapter:HuggingFaceH4/zephyr-7b-beta license:mit 4-bit bitsandbytes region:us