Update Requiremets.txt

Requiremets.txt

@@ -1,2 +1,9 @@
-streamlit
-PyPDF2
+# requirements.txt
+streamlit==1.39.0               # Latest stable version (as of Dec 2025)
+openai==1.59.0                  # Latest OpenAI client (supports gpt-4o, embeddings-3, etc.)
+pdfplumber==0.11.4              # Best PDF text extraction
+PyPDF2==3.0.1                   # Fallback PDF reader
+python-dotenv==1.0.1            # Loads .env file for local dev
+pandas==2.2.3                   # For MCQ CSV export
+numpy==2.1.3                    # For cosine similarity
+scikit-learn==1.6.0             # cosine_similarity function