Update requirements.txt

requirements.txt

@@ -10,10 +10,9 @@ langchain-core==0.3.0
 langchain-text-splitters==0.3.0
 langchain-huggingface==0.1.0
 
-# Vector store and multimodal embeddings
+# Vector store and open-source embeddings
 faiss-cpu==1.8.0
 sentence-transformers==3.0.1
-clip-by-openai==1.0
 
 # PDF processing and multimodal support
 unstructured[pdf]==0.15.12
@@ -37,12 +36,10 @@ requests==2.32.3
 torch==2.4.0
 torchvision==0.19.0
 
-# For better PDF extraction
-#detectron2 @ git+https://github.com/facebookresearch/detectron2.git
-#layoutparser[paddlepaddle]==0.3.4
+# For better PDF extraction (optional - can be commented out if issues)
+# detectron2 @ git+https://github.com/facebookresearch/detectron2.git
+# layoutparser[paddlepaddle]==0.3.4
 
-# System dependencies (these might be needed for unstructured)
-poppler-utils
-#tesseract-ocr
-#libgl1-mesa-glx
-#libglib2.0-0
+# Essential for text processing
+tiktoken==0.7.0
+charset-normalizer==3.3.2