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-font-status

@@ -0,0 +1,27 @@
+#!/bin/bash
+# omarchy:summary=Check Chinese font availability and fallback correctness
+# omarchy:examples=omarchycn font status
+
+set -euo pipefail
+
+failures=0
+
+for family in "Noto Sans CJK SC" "Noto Serif CJK SC" "Noto Sans Mono CJK SC"; do
+  matched=$(fc-match --format '%{family}' "$family")
+  if [[ $matched == *"$family"* ]]; then
+    echo "PASS font: $family"
+  else
+    echo "FAIL font: $family missing (got: $matched)"
+    failures=$((failures + 1))
+  fi
+done
+
+zh_sans=$(fc-match --format '%{family}' sans-serif:lang=zh-cn)
+if [[ $zh_sans == *"CJK SC"* ]]; then
+  echo "PASS fallback: zh-cn sans-serif -> $zh_sans"
+else
+  echo "FAIL fallback: zh-cn sans-serif -> $zh_sans (expected SC variant)"
+  failures=$((failures + 1))
+fi
+
+exit $((failures > 0 ? 1 : 0))