Enhance whatsapp_webhook to include voice prompt handling for audio replies.

app.py

@@ -231,6 +231,8 @@ async def whatsapp_webhook(request: Request):
             )
             reply = generate_llm(prompt)
             client.send_message(mid, chat_id, reply)
+            voice_prompt = f"Speak only this dialog: {reply}"
+            task_queue.put({"type":"audio","message_id":mid,"chat_id":chat_id,"prompt":voice_prompt})
         return {"success": True}
 
     # --- Extract normal text + skip mentions ---