Update app.py

app.py

@@ -1998,9 +1998,8 @@ class WorkflowVisualizer:
                     'text': 'Agent Collaboration Network',
                     'x': 0.5,
                     'xanchor': 'center',
-                    'font': {'size': 20, 'color': '#2c3e50'}
+                    'font': {'size': 16, 'color': '#2c3e50'}
                 },
-                titlefont_size=16,
                 showlegend=False,
                 hovermode='closest',
                 margin=dict(b=40, l=40, r=40, t=60),
@@ -2013,7 +2012,7 @@ class WorkflowVisualizer:
         )
         
         return fig
-    
+        
     def _create_empty_graph(self) -> go.Figure:
         """Create empty graph with message."""
         fig = go.Figure()