Fix transform failing on root-owned XDG config dirs

cp -r from /etc/xdg/ preserved root ownership on directories,
causing rm -rf to fail on subsequent runs. Add --no-preserve=ownership
to cp and escalated rm fallback for existing root-owned dirs.

scripts/transform.sh

@@ -265,8 +265,8 @@ for src_dir in /etc/xdg/*/; do
     # gtk-4.0 is handled separately with Colloid-Catppuccin theme symlinks
     [[ "$app_name" == "gtk-4.0" ]] && continue
     dest_dir="$HOME/.config/$app_name"
-    rm -rf "$dest_dir"
-    cp -r "$src_dir" "$dest_dir"
+    rm -rf "$dest_dir" 2>/dev/null || sudo rm -rf "$dest_dir"
+    cp -r --no-preserve=ownership "$src_dir" "$dest_dir"
     log "  + $app_name/"
 done