Update requirements.txt

requirements.txt

@@ -1,3 +1,18 @@
-altair
-pandas
-streamlit
+# Core
+streamlit==1.35.0
+openai>=1.30.0
+tqdm
+python-dotenv
+
+# File parsing
+PyMuPDF  # for PDFs
+python-docx  # for DOCX files
+html2text
+beautifulsoup4
+
+# Optional: RAG integration (for future use)
+llama-index>=0.10.30
+faiss-cpu  # for local vector search (use faiss-gpu if needed)
+
+# Optional: secure file handling
+unstructured  # supports more document types (large, optional)