Add Model Ranking column to leaderboard display

app.py

@@ -63,10 +63,16 @@ class LeaderboardManager:
         if n is None:
             n = self.config.top_results
         
-        return (self.leaderboard
-                .sort_values('composite_score', ascending=False)
-                .head(n)
-                .reset_index(drop=True))
+        # Sort by composite score and add ranking
+        top_results = (self.leaderboard
+                      .sort_values('composite_score', ascending=False)
+                      .head(n)
+                      .reset_index(drop=True))
+        
+        # Add ranking column
+        top_results.insert(0, 'rank', range(1, len(top_results) + 1))
+        
+        return top_results
 
 
 # Global instances

config/app.yaml

@@ -30,6 +30,7 @@ leaderboard:
   display:
     top_results: 50
     results_table_headers:
+      - "Rank"
       - "Model"
       - "Composite Score"
       - "Correctness"