feat: 优化语言切换下拉交互并支持玩法规则多语言内容

src/features/hall/hall-screen.tsx

@@ -26,8 +26,8 @@ export function HallScreen() {
 
   return (
     <div className="mx-auto w-full max-w-[480px]">
-      <section className={cn("overflow-hidden bg-white text-slate-900", playerPageInset)}>
-        <header className="mb-2 flex min-h-9 items-center gap-2">
+      <section className={cn("bg-white text-slate-900", playerPageInset)}>
+        <header className="relative z-20 mb-2 flex min-h-9 items-center gap-2 overflow-visible">
           <div className="flex min-w-0 flex-1 items-center">
             <Image
               src="/logo.png"
@@ -41,6 +41,7 @@ export function HallScreen() {
           <div className="flex shrink-0 items-center gap-1">
             <LanguageSwitcher
               variant="minimal"
+              menuAlign="end"
               showFlag={false}
               className={cn(
                 playerHeaderControl,