Update app.py

app.py

@@ -92,7 +92,12 @@ async def submit(message, history, doc_ids, last_image):
 
     human_prompt = message['text']
     img_prompt = img_to_prompt([image])
-    user_prompt = combine_img_with_text(img_prompt, human_prompt)
+    ai_role = """Your role is to validate the type of the document in the image by thoroughly examining the content and characteristics of the document. 
+    Carefully analyze the text, layout, and any distinctive features to accurately determine the document type. 
+    Your validation should be precise and based on clear, identifiable criteria."""
+    user_prompt = combine_img_with_text(img_prompt, 
+                                        human_prompt,
+                                        ai_role)
 
     # Return user input immediately
     history.append((human_prompt, "<processing>"))