hyprland: add xembed-sni-proxy for Wine tray icons, hide special workspaces

Package standalone xembed-sni-proxy (XEmbed→SNI bridge) for Wine/Battle.net
tray icons. Unlike snixembed, this doesn't register its own StatusNotifierWatcher
so it won't conflict with Quickshell's tray.

Also filter special workspaces (id < 0) from the bar to fix phantom "al:special".

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

settings/hyprland.nix

@@ -4,6 +4,36 @@ let
   isMacbook = config.networking.hostName == "FredOS-Macbook";
   isGaming  = !isMacbook;
 
+  xembed-sni-proxy = pkgs.stdenv.mkDerivation {
+    pname = "xembed-sni-proxy";
+    version = "unstable-2026-01-22";
+
+    src = pkgs.fetchFromGitHub {
+      owner = "BLumia";
+      repo = "xembed-sni-proxy";
+      rev = "c3afbd4c1d26a19622cd7c2cae3db3d35fdd0d33";
+      hash = "sha256-cxEOrPUPtNTFSgH8hsbft/1dmPsXhONQgFnOWuzFfTk=";
+    };
+
+    nativeBuildInputs = with pkgs; [
+      cmake
+      pkg-config
+      kdePackages.extra-cmake-modules
+      qt6.wrapQtAppsHook
+    ];
+
+    buildInputs = with pkgs; [
+      qt6.qtbase
+      kdePackages.kwindowsystem
+      xorg.libX11
+      xorg.libxcb
+      xorg.xcbutil
+      xorg.xcbutilimage
+      xorg.xcbutilwm
+      xorg.libXtst
+    ];
+  };
+
 in
 {
   config = lib.mkIf (lib.elem config.networking.hostName [ "FredOS-Gaming" "FredOS-Macbook" ]) {
@@ -238,6 +268,7 @@ in
               hl.exec_cmd("hyprctl setcursor Bibata-Modern-Ice 24")
               hl.exec_cmd("swayosd-server")
               ${lib.optionalString isMacbook ''hl.exec_cmd("hypridle")''}
+              ${lib.optionalString isGaming ''hl.exec_cmd("${xembed-sni-proxy}/bin/xembedsniproxy")''}
             end)
 
             -- Animation curve and definitions
@@ -665,7 +696,8 @@ in
 
                         Item {
                             required property var modelData
-                            width: 28
+                            visible: modelData.id > 0
+                            width: visible ? 28 : 0
                             height: 30
 
                             Text {