Fix ranking medals: handle fewer than 3 models

ValueError when trying to assign 3 medals to 1 result.
Fixed logic to only assign medals up to number of results.

Before: ['🥇', '🥈', '🥉'] + [''] * (len(df) - 3) # Fails with 1 model
After: medals[:len(df)] + [''] * max(0, len(df) - len(medals)) # Works with any count

app.py

@@ -385,7 +385,12 @@ def format_results_table(results):
     # Sort by accuracy and assign ranks
     df['_sort'] = df['Accuracy'].str.replace('%', '').astype(float)
     df = df.sort_values('_sort', ascending=False)
-    df['Rank'] = ['🥇', '🥈', '🥉'] + [''] * (len(df) - 3)
+
+    # Assign medals (handle cases with fewer than 3 models)
+    medals = ['🥇', '🥈', '🥉']
+    ranks = medals[:len(df)] + [''] * max(0, len(df) - len(medals))
+    df['Rank'] = ranks
+
     df = df.drop('_sort', axis=1)
 
     return df