Add Simplified Chinese as a system language

The installer asks for the language before the keyboard, and
Setup > Language (omarchy language en|zh) switches it later. Under
zh_CN the menu reads its labels from omarchy-menu.zh-cn.jsonc, the
shell from I18nZh.js through I18n.tr, and notifications are worded
by their sender through omarchy-text, which reads the same table.
User text is never translated.

install/user/first-run/wifi.sh

@@ -1,10 +1,10 @@
 notify_update() {
-  omarchy-notification-send -u critical -g  "Update System" "Click to update the system." \
+  omarchy-notification-send -u critical -g  "$(omarchy-text "Update System")" "$(omarchy-text "Click to update the system.")" \
     --exec omarchy-launch-floating-terminal-with-presentation omarchy-update
 }
 
 notify_wifi() {
-  omarchy-notification-send -u critical -g 󰖩 "Setup Wi-Fi" "Click to configure the wireless network." \
+  omarchy-notification-send -u critical -g 󰖩 "$(omarchy-text "Setup Wi-Fi")" "$(omarchy-text "Click to configure the wireless network.")" \
     --exec omarchy-shell shell toggle omarchy.network
 }