Update requirements.txt

requirements.txt

@@ -1,8 +1,17 @@
-huggingface_hub==0.26.2
+# Core
+streamlit==1.39.0
+python-dotenv==1.0.1
+pymongo==4.10.1
+
+# LangChain + Embeddings
 langchain==0.3.7
 langchain_community==0.3.5
-pymongo==4.10.1
-python-dotenv==1.0.1
-streamlit==1.39.0
-PyPDF2
-sentence-transformers
+sentence-transformers==2.6.1
+transformers==4.41.2
+accelerate==0.30.1
+torch==2.3.0  # Make sure your machine supports this. Downgrade if needed.
+
+# File handling
+PyPDF2==3.0.1
+huggingface_hub==0.26.2
+