refactor(i18n): 사용자 문구 참조를 중앙화

src/features/exit-hold/ui/ExitHoldButton.tsx

@@ -1,6 +1,7 @@
 'use client';
 
 import type { KeyboardEvent } from 'react';
+import { copy } from '@/shared/i18n';
 import { cn } from '@/shared/lib/cn';
 import { useHoldToConfirm } from '../model/useHoldToConfirm';
 
@@ -39,7 +40,7 @@ export const ExitHoldButton = ({
     return (
       <button
         type="button"
-        aria-label="길게 눌러 나가기"
+        aria-label={copy.space.exitHold.holdToExitAriaLabel}
         onMouseDown={start}
         onMouseUp={cancel}
         onMouseLeave={cancel}
@@ -90,7 +91,7 @@ export const ExitHoldButton = ({
   return (
     <button
       type="button"
-      aria-label="길게 눌러 나가기"
+      aria-label={copy.space.exitHold.holdToExitAriaLabel}
       onMouseDown={start}
       onMouseUp={cancel}
       onMouseLeave={cancel}
@@ -117,7 +118,7 @@ export const ExitHoldButton = ({
       ) : null}
       <span className="relative z-10 inline-flex items-center gap-1">
         <span aria-hidden>⤫</span>
-        <span>나가기</span>
+        <span>{copy.space.exitHold.exit}</span>
       </span>
     </button>
   );