Add environment variable fallback for HF_TOKEN before checking secrets

app.py

@@ -34,7 +34,7 @@ class Config:
     @classmethod
     def from_env(cls) -> "Config":
         """Create config from environment variables and secrets."""
-        system_token = st.secrets.get("HF_TOKEN")
+        system_token = os.getenv("HF_TOKEN") or st.secrets.get("HF_TOKEN")
         user_token = st.session_state.get("user_hf_token")
 
         if user_token: