feat: support Korean IME mode for keyboard shortcuts via e.code (KeyF, KeyS, ㄹ, ㄴ)

src/components/MangaViewer.tsx

@@ -157,26 +157,18 @@ export function MangaViewer({
   useEffect(() => {
     const handler = (e: KeyboardEvent) => {
       if (e.target instanceof HTMLInputElement || e.target instanceof HTMLTextAreaElement) return;
-      switch (e.key) {
-        case 'ArrowRight':
+      if (e.code === 'ArrowRight') {
         e.preventDefault();
         goNext();
-          break;
-        case 'ArrowLeft':
+      } else if (e.code === 'ArrowLeft') {
         e.preventDefault();
         goPrev();
-          break;
-        case 'f':
-        case 'F':
+      } else if (e.code === 'KeyF' || e.key === 'f' || e.key === 'F' || e.key === 'ㄹ') {
         toggleFullscreen();
-          break;
-        case 's':
-        case 'S':
+      } else if (e.code === 'KeyS' || e.key === 's' || e.key === 'S' || e.key === 'ㄴ') {
         setShowSettings((v) => !v);
-          break;
-        case 'Escape':
+      } else if (e.key === 'Escape') {
         if (showSettings) setShowSettings(false);
-          break;
       }
     };
     window.addEventListener('keydown', handler);