Replace raw extraction with sanitized vLLM-ready toxicity LoRA (pure lora_A/lora_B, modules_to_save stripped; source: K-intelligence/Llama-SafetyGuard-Content-Binary)

Update README for sanitized vLLM-ready toxicity adapter

Add toxicity LoRA adapter extracted from K-intelligence/Llama-SafetyGuard-Content-Binary (base: meta-llama/Llama-3.1-8B)

initial commit