Fix default model value

app.py

@@ -30,7 +30,8 @@ BUTTON_WIDTH = 160
 DEFAULT_OPT_OUT_VALUE = DEBUG_MODE
 
 # If DEBUG_MODEL is True, use an alternative model (without reasoning) for testing
-DEFAULT_MODEL_NAME = "Apriel-1.6-15B-Thinker" if not DEBUG_MODEL else "Apriel-1.6-15B-Thinker"
+DEFAULT_MODEL_NAME = "Apriel-1.5-15B-thinker" if not DEBUG_MODEL else "Apriel-1.5-15B-thinker"
+# DEFAULT_MODEL_NAME = "Apriel-1.6-15B-Thinker" if not DEBUG_MODEL else "Apriel-1.6-15B-Thinker"
 
 SHOW_BANNER = False
 BANNER_MARKDOWN = """