fix(panel): suppress the nm-applet tray icon like the other replaced applets

network-manager-gnome autostarts its own systray icon from /etc/xdg/autostart,
which duplicates the network genmon (plugin-13) already in the panel. Override
it with a Hidden=true user-level .desktop, the same way blueman-applet and
nm-tray are already handled, and copy it into place from the panel installer.

Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>

bin/panel/install.sh

@@ -26,6 +26,9 @@ ln -sf "$NEXUS/management/autostart/nexus-popup.desktop" \
        "$AUTOSTART/nexus-popup.desktop"
 cp -f "$NEXUS/management/autostart/nm-tray.desktop"          "$AUTOSTART/nm-tray.desktop"
 cp -f "$NEXUS/management/autostart/nm-tray-autostart.desktop" "$AUTOSTART/nm-tray-autostart.desktop"
+# Same for nm-applet (network-manager-gnome), which ships its own systray icon
+# from /etc/xdg/autostart — the network genmon (plugin-13) replaces it.
+cp -f "$NEXUS/management/autostart/nm-applet.desktop"        "$AUTOSTART/nm-applet.desktop"
 # Suppress blueman-applet autostart (both the system blueman.desktop and the
 # user blueman-applet.desktop). blueman always forces its own tray icon, which
 # the panel renders too small; the Bluetooth genmon (plugin-16) replaces it and

management/autostart/nm-applet.desktop

@@ -0,0 +1,9 @@
+[Desktop Entry]
+Type=Application
+Name=Network
+Comment=Manage your network connections
+Icon=nm-device-wireless
+TryExec=nm-applet
+Exec=nm-applet
+Hidden=true
+X-XFCE-Autostart-Override=true