리펙토링: 전체 구조 검토, 개선

src/renderer/renderer.js

@@ -12,6 +12,8 @@ import * as dragDrop        from './handlers/drag-drop.js';
 import * as hoverPreview    from './handlers/image-preview.js';
 import * as fileExplorer    from './handlers/file-explorer.js';
 
+let _homeDir = null;
+
 // ── DOM ──────────────────────────────────────────────
 const btnOpen          = document.getElementById('btn-open');
 const btnSortName      = document.getElementById('btn-sort-name');
@@ -48,6 +50,7 @@ window.api.onFullscreenChange((isFullscreen) => {
     window.api.getHomeDir(),
     window.api.getPreviewOn(),
   ]);
+  _homeDir = homeDir;
 
   btnPreviewToggle.classList.toggle('active', previewOn);
   hoverPreview.setEnabled(previewOn);
@@ -85,7 +88,7 @@ document.addEventListener('keydown', (e) => {
 async function openFolder() {
   const folder = await window.api.selectFolder();
   if (!folder) return;
-  const homeDir = await window.api.getHomeDir();
+  const homeDir = _homeDir;
   if (folder.startsWith(homeDir)) {
     await fileExplorer.loadTree(homeDir, folder);
   } else {