comment out step_callbacks to test fallback feature

app.py

@@ -93,7 +93,7 @@ class BasicAgent:
                 AssemblyAIAudioTranscriptTool(),
             ], 
             model=model,
-            step_callbacks=[rate_limiter.increment_and_sleep_if_needed],
+            # step_callbacks=[rate_limiter.increment_and_sleep_if_needed],
             additional_authorized_imports=["pandas", "openpyxl", "requests"],
             instructions=CUSTOM_PROMPT
         )