Avoid cold theme preview rasterization and load settings schema asynchronously

crates/ferese-config/locales/zh-CN.json

@@ -1038,5 +1038,9 @@
   "Save your work before continuing.": "请先保存工作。",
   "{action} anyway": "仍然{action}",
   "Power off": "关机",
-  "Default output": "默认输出"
+  "Default output": "默认输出",
+  "Loading configuration options…": "正在载入配置选项…",
+  "Retry": "重试",
+  "Dark only": "仅深色",
+  "Light only": "仅浅色"
 }