refactor: add total steps display in TurtleDetails for better status tracking

client/src/components/ControlPanel.jsx

@@ -198,6 +198,14 @@ function TurtleDetails({ turtle }) {
               {turtle.fuel === 'unlimited' ? 'Unlimited' : turtle.fuel}
             </span>
           </div>
+          {turtle.totalSteps > 0 && (
+            <div className="status-item">
+              <span className="label">Steps:</span>
+              <span className="value">
+                {turtle.totalSteps} total ({turtle.stepsSinceLastRefuel || 0} since refuel)
+              </span>
+            </div>
+          )}
           <div className="status-item">
             <span className="label">Position:</span>
             <span className="value">