Fix aircraft weight category classification

- Fixed incorrect category label: 34000-136000kg is Large, not Medium
- Updated JavaScript color matching to properly distinguish categories
- Simplified color logic to use category keywords (light/medium/large/heavy)

This ensures:
- Light aircraft (< 7000kg): Sky blue
- Medium aircraft (7000-34000kg): Green
- Large aircraft (34000-136000kg): Orange
- Heavy aircraft (> 136000kg): Red

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

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

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

@@ -290,19 +290,19 @@ 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';
             }
             // Large aircraft (34000-136000kg) - Orange
-            if (cat.includes('medium 34000') || cat.includes('large')) {
+            if (cat.includes('large') || cat.includes('high vortex')) {
                 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: