Split language from region: omarchy-language and Setup > Language own LANG

omarchy-region and install/config/region.sh no longer touch the locale;
both logout prompts are worded through omarchy-text.

install/config/region.sh

@@ -14,7 +14,6 @@ region=${OMARCHY_REGION:-$region}
 case $region in
 global)
   rm -f /etc/omarchy/region
-  sed -i 's/^LANG=zh_CN\.UTF-8$/LANG=en_US.UTF-8/' /etc/locale.conf
   for link in "${cn_links[@]}"; do
     read -r _ target <<<"$link"
     if [[ -L $target && $(readlink "$target") == */default/regions/cn/* ]]; then
@@ -37,13 +36,6 @@ cn)
     mkdir -p "${target%/*}"
     ln -sfn "$OMARCHY_PATH/default/regions/cn/$source" "$target"
   done
-  sed -i 's/^#\(zh_CN\.UTF-8 UTF-8\)/\1/' /etc/locale.gen
-  locale-gen
-  if grep -q '^LANG=' /etc/locale.conf; then
-    sed -i 's/^LANG=.*/LANG=zh_CN.UTF-8/' /etc/locale.conf
-  else
-    echo LANG=zh_CN.UTF-8 >>/etc/locale.conf
-  fi
   ;;
 *)
   echo "Unknown region: $region" >&2