Rebuild .cn twins per server and leave database syncs to omarchy update

bin/omarchy-region

@@ -27,23 +27,18 @@ if [[ $1 != "global" && $1 != "china" ]]; then
 fi
 
 pacman_files=(/etc/pacman.conf /etc/pacman.d/mirrorlist)
+drop_cn_servers='/^Server = https:\/\/[a-z-]*\.omarchy\.cn\//d'
 
 if [[ $1 == "china" ]]; then
-  for file in "${pacman_files[@]}"; do
-    if ! grep -q '^Server = https://[a-z-]*\.omarchy\.cn/' "$file"; then
-      sudo sed -i -f "$OMARCHY_PATH/default/region/china/pacman.sed" "$file"
-    fi
-  done
+  sudo sed -i -e "$drop_cn_servers" -f "$OMARCHY_PATH/default/region/china/pacman.sed" "${pacman_files[@]}"
   echo "Package mirrors -> .cn first, .org after"
-  sudo pacman -Sy
   sudo env OMARCHY_REGION=china OMARCHY_PATH="$OMARCHY_PATH" bash -e "$OMARCHY_PATH/install/config/region.sh"
   if [[ ! -f $HOME/.local/share/fcitx5/rime/rime_ice.schema.yaml ]]; then
     rime-ice-installer --yes
   fi
 else
-  sudo sed -i '/^Server = https:\/\/[a-z-]*\.omarchy\.cn\//d' "${pacman_files[@]}"
+  sudo sed -i -e "$drop_cn_servers" "${pacman_files[@]}"
   echo "Package mirrors -> .org only"
-  sudo pacman -Sy
   sudo env OMARCHY_REGION=global OMARCHY_PATH="$OMARCHY_PATH" bash -e "$OMARCHY_PATH/install/config/region.sh"
   omarchy-setup-claude-api --remove
 fi