fix(loop): force X11 ozone platform and disable sandbox

- Add --ozone-platform=x11 to wrapper to fix Wayland crash
  (zxdg_exporter_v1 protocol error causing SIGTRAP on Wayland)
- Add --no-sandbox since chrome-sandbox lacks SUID on NixOS

packages/loop/package.nix

@@ -130,7 +130,9 @@ EOF
   postFixup = ''
     wrapProgram $out/bin/loop \
       --prefix PATH : ${glib.bin}/bin \
-      --prefix LD_LIBRARY_PATH : $out/share/loop
+      --prefix LD_LIBRARY_PATH : $out/share/loop \
+      --add-flags "--ozone-platform=x11" \
+      --add-flags "--no-sandbox"
   '';
 
   passthru = {