added code for hf Token in app.ppy

app.py

@@ -6,6 +6,13 @@ import numpy as np
 from langchain.embeddings import HuggingFaceEmbeddings
 from langchain.vectorstores import FAISS
 
+hf_token = os.getenv("PROJECT_TEST_TOKEN")
+if hf_token:
+    login(hf_token)
+else:
+    st.error("Token not found")
+    st.stop()
+    
 # 🎯 Load CodeLlama 3B Model
 model_name = "codellama/CodeLlama-3b"
 tokenizer = AutoTokenizer.from_pretrained(model_name)