Release v2.13.0 - WiFi client display in AP detail drawer

Features:
- Display connected clients for access points in detail drawer
- Real-time client updates via SSE streaming
- Client cards show MAC, vendor, RSSI, probed SSIDs, and last seen
- Count badge in Connected Clients header

Other changes:
- Updated aircraft database
- CSS and template refinements

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

setup.sh

@@ -1092,4 +1092,7 @@ main() {
 }
 
 main "$@"
+
+# Clear traps before exiting to prevent spurious errors during cleanup
+trap - ERR EXIT
 exit 0