전체 선택 단축키 추가

src/renderer/renderer.js

@@ -79,6 +79,7 @@ document.addEventListener('keydown', (e) => {
   if (e.target.tagName === 'INPUT') return;
   if (e.code === 'KeyO') btnOpen.click();
   if (e.code === 'KeyS' && !btnRename.disabled) btnRename.click();
+  if (e.code === 'KeyA') { state.files.forEach((_, i) => state.selectedIdxs.add(i)); refreshCardSelection(); updateSelCount(); }
 });
 btnPreviewToggle.addEventListener('click', () => {
   const on = btnPreviewToggle.classList.toggle('active');