fix: Meshtastic traceroute button and dark mode maps

- Fix traceroute button in Meshtastic popups using event delegation
  instead of inline onclick handlers (more reliable with Leaflet)
- Update all maps to use dark CARTO tiles for consistency:
  - ADS-B dashboard radar map
  - AIS dashboard vessel map
  - Satellite dashboard ground map
  - APRS map
  - Satellite ground track map in main UI
- Change settings manager default tile provider to cartodb_dark

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

templates/satellite_dashboard.html

@@ -416,8 +416,9 @@
                 worldCopyJump: true
             });
 
-            L.tileLayer('https://{s}.tile.openstreetmap.org/{z}/{x}/{y}.png', {
-                attribution: '© OpenStreetMap contributors'
+            L.tileLayer('https://{s}.basemaps.cartocdn.com/dark_all/{z}/{x}/{y}{r}.png', {
+                attribution: '&copy; <a href="https://www.openstreetmap.org/copyright">OSM</a> &copy; <a href="https://carto.com/">CARTO</a>',
+                maxZoom: 19
             }).addTo(groundMap);
         }