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.

bin/omarchy-notification-time

@@ -2,4 +2,4 @@
 
 # omarchy:summary=Show the current time and date notification
 
-omarchy-notification-send -g  -u low "$(date +"%A %H:%M  ·  %d %B %Y  ·  Week %V")"
+omarchy-notification-send -g  -u low "$(date +"%A %H:%M  ·  %d %B %Y")  ·  $(omarchy-text "Week %1" "$(date +%V)")"