HF_API_KEY=your_huggingface_inference_api_key
EMBEDDING_MODEL=sentence-transformers/all-MiniLM-L6-v2
GENERATION_MODEL=meta-llama/Llama-3.2-1B-Instruct
CHUNK_SIZE=512
CHUNK_OVERLAP=64
TOP_K_DEFAULT=5
DATA_DIR=data
MAX_UPLOAD_MB=10
HF_TIMEOUT_SECONDS=60