reduce max filesize w/ documentatiojn

app.py

@@ -844,6 +844,7 @@ with demo:
             # Add info about rate limits
             gr.Markdown("""
             ### Submission Policy
+            - UPDATE (Oct. 12, 2025): Due to changes to HF storage limits, the maximum file size is now 50MB. If you're running into unexpected errors validating your Llama or Gemma artifacts, this may be why! For circuits, .pt files are *strongly* preferred over .json. For causal variable track artifacts, if you cannot reduce your filesize, please contact us on the MIB Discord.
             - Maximum 2 valid submissions per HuggingFace account per week
             - Invalid submissions don't count toward your limit
             - Rate limit tracked on a rolling basis: a submission no longer counts toward the limit as soon as 7 days have passed since the submission time