Update app.py

app.py

@@ -25,10 +25,10 @@ MODEL_NAME = "loocorez/reverse-text-warmup"
 
 # ----  prompt helpers --------------------------------------------------------
 parser = vf.XMLParser(["think", "answer"])          # <think> … </think>\n<answer> … </answer>
-SYSTEM_MSG = (
-    "You are a helpful assistant that reverses the user's text. "
-    f"Respond in exactly this format: {parser.get_format_str()}"
-)
+SYSTEM_MSG = f"""Reverse the given text.
+
+Respond in the following format:
+{parser.get_format_str()}"""
 
 def build_prompt(user_msg: str, tok) -> str:
     """Use the model’s native chat template so all special tokens are right."""