Enable PDF processing in RAG system

Oncolife/app.py

@@ -129,7 +129,22 @@ class OncoLifeAssistant:
             
             documents_loaded = 0
             
-            # Only process JSON files (lightweight)
+            # Process PDF files (essential medical guidelines)
+            for pdf_file in docs_path.glob("*.pdf"):
+                try:
+                    print(f"📄 Processing PDF: {pdf_file.name}")
+                    text = self._extract_pdf_text(pdf_file)
+                    if text:
+                        chunks = text_splitter.split_text(text)
+                        self._add_chunks_to_db(chunks, pdf_file.name)
+                        documents_loaded += 1
+                        print(f"✅ Added {len(chunks)} chunks from {pdf_file.name}")
+                    else:
+                        print(f"⚠️ No text extracted from {pdf_file.name}")
+                except Exception as e:
+                    print(f"❌ Error processing {pdf_file.name}: {e}")
+            
+            # Process JSON files (lightweight)
             for json_file in docs_path.glob("*.json"):
                 try:
                     print(f"📄 Processing JSON: {json_file.name}")