Fix frontier labels to use log10 coordinates for log scale axis

Annotations in Plotly need log10(x) coordinates when the x-axis uses
log scale (see Plotly issue #2580). Updated the frontier label
annotations to transform x values to log10.

Co-authored-by: openhands <openhands@all-hands.dev>

leaderboard_transformer.py

@@ -631,13 +631,11 @@ def _plot_scatter_plotly(
 
     # --- Section 7: Add Model Name Labels to Frontier Points ---
     if frontier_rows:
-        frontier_x = []
-        frontier_y = []
-        frontier_labels = []
+        frontier_labels_data = []
         
         for row in frontier_rows:
-            frontier_x.append(row[x_col_to_use])
-            frontier_y.append(row[y_col_to_use])
+            x_val = row[x_col_to_use]
+            y_val = row[y_col_to_use]
             
             # Get the model name for the label
             model_name = row.get('Language Model', '')
@@ -648,29 +646,28 @@ def _plot_scatter_plotly(
             # Truncate long names
             if len(model_name) > 25:
                 model_name = model_name[:22] + '...'
-            frontier_labels.append(model_name)
-        
-        # Add text labels for frontier points - positioned above the icons
-        fig.add_trace(go.Scatter(
-            x=frontier_x,
-            y=frontier_y,
-            mode='text',
-            name='Frontier Labels',
-            showlegend=False,
-            text=frontier_labels,
-            textposition='top center',
-            textfont=dict(
-                size=10,
-                color='#032629',
-                family='Manrope'
-            ),
-            hoverinfo='skip'
-        ))
+            
+            frontier_labels_data.append({
+                'x': x_val,
+                'y': y_val,
+                'label': model_name
+            })
         
-        # Add annotations for each frontier label with higher y-offset
-        for i, (x_val, y_val, label) in enumerate(zip(frontier_x, frontier_y, frontier_labels)):
+        # Add annotations for each frontier label
+        # For log scale x-axis, annotations need log10(x) coordinates (Plotly issue #2580)
+        for item in frontier_labels_data:
+            x_val = item['x']
+            y_val = item['y']
+            label = item['label']
+            
+            # Transform x to log10 for annotation positioning on log scale
+            if x_val > 0:
+                x_log = np.log10(x_val)
+            else:
+                x_log = x_min_log
+            
             fig.add_annotation(
-                x=x_val,
+                x=x_log,
                 y=y_val,
                 text=label,
                 showarrow=False,
@@ -683,9 +680,6 @@ def _plot_scatter_plotly(
                 xanchor='center',
                 yanchor='bottom'
             )
-        
-        # Remove the scatter trace we just added (we're using annotations instead)
-        fig.data = fig.data[:-1]
 
     # --- Section 8: Configure Layout  ---
     # Use the same axis ranges as calculated for domain coordinates