allow open ended

app.py

@@ -70,11 +70,10 @@ def main():
             st.warning("Please enter a prompt.")
             return
 
-        if not document_text:
-            st.warning("Please upload a document.")
-            return
-
-        full_prompt = f"Document content:\n\n{document_text}\n\nPrompt:\n\n{prompt}"
+        if document_text is None:
+            full_prompt = prompt
+        else:
+            full_prompt = f"Document content:\n\n{document_text}\n\nPrompt:\n\n{prompt}"
 
         if model == "GPT-4o":
             with st.spinner("Processing with GPT-4o..."):