리펙토링: Node.js 프로젝트 폴더 구조 적용

src/main/ipc/folder.js

@@ -0,0 +1,18 @@
+const { ipcMain, dialog, shell } = require('electron');
+
+function register(mainWindow) {
+  ipcMain.handle('select-folder', async () => {
+    const result = await dialog.showOpenDialog(mainWindow, {
+      properties: ['openDirectory'],
+      title: '이미지 폴더 선택',
+    });
+    if (result.canceled) return null;
+    return result.filePaths[0];
+  });
+
+  ipcMain.handle('reveal-folder', async (_event, folderPath) => {
+    shell.openPath(folderPath);
+  });
+}
+
+module.exports = { register };