feat: scaffold electron orchestrator foundation

Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>

src/main/windows/createMainWindow.ts

@@ -0,0 +1,33 @@
+import { BrowserWindow, shell } from 'electron';
+import { join } from 'node:path';
+
+export function createMainWindow(): BrowserWindow {
+  const window = new BrowserWindow({
+    width: 1440,
+    height: 960,
+    minWidth: 1120,
+    minHeight: 720,
+    title: 'kopaya',
+    backgroundColor: '#0f172a',
+    webPreferences: {
+      preload: join(__dirname, '../preload/index.js'),
+      contextIsolation: true,
+      nodeIntegration: false,
+    },
+  });
+
+  const rendererUrl = process.env.ELECTRON_RENDERER_URL;
+
+  if (rendererUrl) {
+    void window.loadURL(rendererUrl);
+  } else {
+    void window.loadFile(join(__dirname, '../../dist/renderer/index.html'));
+  }
+
+  window.webContents.setWindowOpenHandler(({ url }) => {
+    void shell.openExternal(url);
+    return { action: 'deny' };
+  });
+
+  return window;
+}