feat: improve language handling based on environment

- Update language configuration to use ref in development and useStorage in production for better persistence
- Enhance comments for clarity on language selection logic

src/store/app.ts

@@ -14,8 +14,10 @@ export const useAppStore = defineStore('app', () => {
   const sidebarOpened = ref(true)
   const loading = ref(false)
 
-  // 语言和组件尺寸
-  const language = useStorage('language', DEFAULT_LANG)
+  // 语言：开发环境使用 ref（每次启动用环境变量），生产环境使用 useStorage（持久化用户选择）
+  const language = import.meta.env.DEV
+    ? ref(DEFAULT_LANG)
+    : useStorage('language', DEFAULT_LANG)
   const size = ref<'default' | 'small' | 'large'>('default')
 
   /**