Add separate color and legend entry for High Vortex Large aircraft

- Added High Vortex Large as distinct category in legend
- Assigned red-orange color (#ff4500) to differentiate from regular Large
- Updated JavaScript to check for high vortex before regular large
- Maintains proper ADS-B category distinctions for wake turbulence

High Vortex Large aircraft (like B757) create stronger wake turbulence
than typical large aircraft, warranting visual distinction for safety.

🤖 Generated with [Claude Code](https://claude.ai/code)

Co-Authored-By: Claude <noreply@anthropic.com>

assets/static/css/style.css

@@ -271,6 +271,7 @@ body {
 .legend-icon.light { background: #00bfff; }      /* Sky blue for light aircraft */
 .legend-icon.medium { background: #00ff88; }     /* Green for medium aircraft */
 .legend-icon.large { background: #ff8c00; }      /* Orange for large aircraft */
+.legend-icon.high-vortex { background: #ff4500; } /* Red-orange for high vortex large */
 .legend-icon.heavy { background: #ff0000; }      /* Red for heavy aircraft */
 .legend-icon.helicopter { background: #ff00ff; } /* Magenta for helicopters */
 .legend-icon.military { background: #ff4444; }   /* Red-orange for military */

assets/static/index.html

@@ -118,6 +118,10 @@
                         <span class="legend-icon large"></span>
                         <span>Large 34000-136000kg</span>
                     </div>
+                    <div class="legend-item">
+                        <span class="legend-icon high-vortex"></span>
+                        <span>High Vortex Large</span>
+                    </div>
                     <div class="legend-item">
                         <span class="legend-icon heavy"></span>
                         <span>Heavy &gt; 136000kg</span>

assets/static/js/modules/aircraft-manager.js

@@ -290,19 +290,23 @@ export class AircraftManager {
             
             // Check for specific weight ranges in the category string
             // Light aircraft (< 7000kg) - Sky blue
-            if (cat.includes('light') || cat.includes('7000kg')) {
+            if (cat.includes('light')) {
                 return '#00bfff';
             }
             // Medium aircraft (7000-34000kg) - Green  
-            if (cat.includes('medium 7000')) {
+            if (cat.includes('medium')) {
                 return '#00ff88';
             }
+            // High Vortex Large - Red-orange (special wake turbulence category)
+            if (cat.includes('high vortex')) {
+                return '#ff4500';
+            }
             // Large aircraft (34000-136000kg) - Orange
-            if (cat.includes('medium 34000') || cat.includes('large')) {
+            if (cat.includes('large')) {
                 return '#ff8c00';
             }
             // Heavy aircraft (> 136000kg) - Red
-            if (cat.includes('heavy') || cat.includes('136000kg') || cat.includes('super')) {
+            if (cat.includes('heavy') || cat.includes('super')) {
                 return '#ff0000';
             }
         }

internal/modes/decoder.go

@@ -789,7 +789,7 @@ func (d *Decoder) getAircraftCategory(tc uint8, ca uint8) string {
 		case 2:
 			return "Medium 7000-34000kg"
 		case 3:
-			return "Medium 34000-136000kg"
+			return "Large 34000-136000kg"
 		case 4:
 			return "High Vortex Large"
 		case 5: