리펙토링: Node.js 프로젝트 폴더 구조 적용

src/main/index.js

@@ -20,7 +20,7 @@ function createWindow() {
     show: false,
   });
 
-  mainWindow.loadFile(path.join(__dirname, 'index.html'));
+  mainWindow.loadFile(path.join(__dirname, '../renderer/index.html'));
 
   mainWindow.once('ready-to-show', () => {
     mainWindow.show();

src/renderer/renderer.js

@@ -1,7 +1,7 @@
 import { state }     from './state.js';
-import * as pinchZoom from './handlers/pinchZoom.js';
+import * as pinchZoom from './handlers/pinch-zoom.js';
 import * as selection  from './handlers/selection.js';
-import * as dragDrop   from './handlers/dragDrop.js';
+import * as dragDrop   from './handlers/drag-drop.js';
 
 // ── DOM ──────────────────────────────────────────────
 const grid          = document.getElementById('grid');