style: use distinct colors for WiFi and Bluetooth devices

WiFi devices now shown in orange (#f59f00), Bluetooth in blue (#4dabf7).
Makes it easier to distinguish device types on map and in device list.

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

config.yaml

@@ -1,6 +1,6 @@
 gps:
-  latitude: 50.85852913116932
-  longitude: 4.3976058563598315
+  latitude: 50.858495376473314
+  longitude: 4.397614016072339
 web:
   host: 0.0.0.0
   port: 5000
@@ -16,10 +16,9 @@ scanner:
   path_loss_exponent: 2.5
   wifi_tx_power: -59
   bt_tx_power: -72
-  # Peer sync settings
-  peers: []                     # List of peer scanner URLs (auto-populated via registration)
-  sync_interval_seconds: 30     # How often to sync with peers (0 = disabled)
-  accept_registrations: true    # Allow other scanners to register with this one
+  peers: []
+  sync_interval_seconds: 30
+  accept_registrations: true
 data:
   directory: data
   max_scans: 100