Add CJK fonts, fontconfig priority, and locale commands

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01QKxGW1raAWaqeU8WdHsMsp

bin/omarchy-cn-locale-apply

@@ -0,0 +1,15 @@
+#!/bin/bash
+# omarchy:summary=Generate zh_CN.UTF-8 and en_US.UTF-8 locales
+# omarchy:examples=omarchycn locale apply
+# omarchy:requires-sudo=true
+
+set -euo pipefail
+
+for loc in "zh_CN.UTF-8 UTF-8" "en_US.UTF-8 UTF-8"; do
+  if ! grep -qE "^${loc% *}" /etc/locale.gen; then
+    echo "$loc" | sudo tee -a /etc/locale.gen > /dev/null
+  fi
+done
+
+sudo locale-gen
+echo "Locales available: $(locale -a | grep -cE 'zh_CN|en_US') (zh_CN/en_US variants)"