desktop updates (appimage/betaflight)

configs/desktop-light.nix

@@ -100,6 +100,10 @@ ACTION=="add", SUBSYSTEM=="backlight", GROUP="video", MODE="0660"
 
   programs.dconf.enable = true;
   services.gvfs.enable = true;
+  programs.appimage = {
+    enable = true;
+    binfmt = true;
+  };
 #  services.dunst.enable = true;
 #  services.dunst.settings = {
 #    global = {

configs/desktop-packages-full.nix

@@ -10,6 +10,7 @@
     arduino-cli
     arduino-ide
     arduino-mk
+    betaflight-configurator
     brave
     clang
     clang-tools
@@ -53,4 +54,10 @@
     virt-manager
     virt-viewer
   ];
+
+  # STM32 DFU bootloader access for betaflight-configurator firmware flashing.
+  # Normal serial connection is covered by dialout group membership.
+  services.udev.extraRules = ''
+    SUBSYSTEM=="usb", ATTRS{idVendor}=="0483", ATTRS{idProduct}=="df11", MODE="0664", GROUP="plugdev", TAG+="uaccess"
+  '';
 }