Fix wealth distribution histogram issue by correcting wealth calculation and improving data handling

app/routes/api.py

@@ -150,6 +150,9 @@ def start_simulation(simulation_id: str):
                         # Get distribution data for real-time chart updates
                         bin_labels, bin_counts = simulation.get_wealth_histogram(10)
                         
+                        # Debug logging
+                        print(f"DEBUG: Sending distribution data - labels: {bin_labels}, counts: {bin_counts}")
+                        
                         progress_data = {
                             'simulation_id': simulation_id,
                             'iteration': snapshot.iteration,
@@ -363,7 +366,10 @@ def get_wealth_distribution(simulation_id: str):
         # Get histogram data
         bin_labels, bin_counts = simulation.get_wealth_histogram(num_bins)
         
-        return jsonify({
+        # Debug logging
+        print(f"DEBUG: Distribution endpoint - labels: {bin_labels}, counts: {bin_counts}, bins: {num_bins}")
+        
+        response_data = {
             'simulation_id': simulation_id,
             'histogram': {
                 'labels': bin_labels,
@@ -371,7 +377,10 @@ def get_wealth_distribution(simulation_id: str):
                 'total_agents': len(simulation.agents),
                 'bins': num_bins
             }
-        })
+        }
+        
+        print(f"DEBUG: Distribution endpoint response: {response_data}")
+        return jsonify(response_data)
         
     except Exception as e:
         current_app.logger.error(f"Error getting wealth distribution: {str(e)}")