Run3 Synchronize Bubble and Table Row Selection

// Click handler for bubbles
circles.on('click', function(event, d) {
  if (isETF(d)) return; // Only allow interaction for non-ETF stocks
  
  // Remove previous selection from all circles and table rows
  circles.classed('selected', false);
  tableRows.classed('highlighted', false);
  
  // Add selection to clicked bubble
  d3.select(this).classed('selected', true);
  
  // Find and highlight matching row in table
  tableRows.each(function(rowData) {
    if (rowData.ticker === d.ticker) {
      d3.select(this).classed('highlighted', true);
    }
  });
});

// Click handler for table rows
tableRows.on('click', function(d) {
  // Remove previous selection from all rows and circles
  tableRows.classed('highlighted', false);
  circles.classed('selected', false);
  
  // Add highlight to clicked row
  d3.select(this).classed('highlighted', true);
  
  // Find and select matching bubble
  circles.each(function(bubbleData) {
    if (bubbleData.ticker === d.ticker) {
      d3.select(this).classed('selected', true);
    }
  });
});

Critical implementation details:

• Always remove previous .highlighted and .selected classes before applying new ones
• Use strict equality (===) when comparing ticker strings
• Ensure both d.ticker and rowData.ticker / bubbleData.ticker reference the same field
• Verify data types match (both should be strings)
• Add corresponding CSS classes in style.css with visible styling (e.g., stroke, background-color)
• Test in browser console to confirm event handlers fire and data matches correctly