Load environment variables using dotenv for improved API token management

summarize_paper.py

@@ -1,14 +1,17 @@
 import os
+import dotenv
 import json
 from gradio_client import Client
 
+dotenv.load_dotenv()
+
 def summarize_paper(pdf_url, paper_id, access_key):
     mindmap = None
     summary = None
     try:
         summarizer_client = Client(
             "raannakasturi/ReXploreAPI",
-            hf_token=os.environ.get("HF_API_TOKEN"),
+            hf_token=os.getenv("HF_API_TOKEN"),
         )
         result = summarizer_client.predict(
                 url=pdf_url,