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/setup-agent.hook

@@ -5,7 +5,7 @@ set -e
 # Omarchy ships no default agent, so invite once rather than picking one. An
 # agent already chosen means the invitation has nothing to offer.
 if [[ -z $(omarchy-default-agent) ]] && omarchy-done ensure agent-setup-invitation; then
-  omarchy-notification-send -u critical -g 󰚩 "Set your default agent" \
-    "Let your favorite agent help with Omarchy." \
+  omarchy-notification-send -u critical -g 󰚩 "$(omarchy-text "Set your default agent")" \
+    "$(omarchy-text "Let your favorite agent help with Omarchy.")" \
     --exec omarchy menu summon setup.default.agent
 fi

install/user/first-run/setup-fingerprint.hook

@@ -6,7 +6,7 @@ set -e
 # PAM file is the last thing the setup writes on success).
 if omarchy-hw-fingerprint && [[ ! -f /etc/pam.d/omarchy-lock-fingerprint ]] &&
   omarchy-done ensure fingerprint-setup-invitation; then
-  omarchy-notification-send -u critical -g 󰈷 "Setup Fingerprint Reader" \
-    "Enable sudo and unlocking with your fingerprint." \
+  omarchy-notification-send -u critical -g 󰈷 "$(omarchy-text "Setup Fingerprint Reader")" \
+    "$(omarchy-text "Enable sudo and unlocking with your fingerprint.")" \
     --exec omarchy-launch-floating-terminal-with-presentation omarchy-setup-security-fingerprint
 fi

install/user/first-run/welcome.sh

@@ -1,5 +1,5 @@
 # Real newlines, not a literal \n: the card renders the body as it arrives, and
 # elides past three lines.
-omarchy-notification-send -u critical -g  "Learn Keybindings" \
-  $'Super + K for cheatsheet.\nSuper + Space for Omarchy Menu.' \
+omarchy-notification-send -u critical -g  "$(omarchy-text "Learn Keybindings")" \
+  "$(omarchy-text $'Super + K for cheatsheet.\nSuper + Space for Omarchy Menu.')" \
   --exec omarchy-menu-keybindings

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
 }