add missing env variable

app.py

@@ -15,6 +15,9 @@ import numpy as np
 os.environ["GRADIO_ANALYTICS_ENABLED"] = "False"
 CONVERSION_SCRIPT = "./llama.cpp/convert_hf_to_gguf.py"
 
+# Get Hugging Face token from environment variable
+HF_TOKEN = os.environ.get("HF_TOKEN")
+
 # Set up persistent storage paths
 log_dir = "/data/logs"
 downloads_dir = "/data/downloads"