improve window management and title bar

js/src/preload.ts

@@ -1,2 +1,9 @@
 // See the Electron documentation for details on how to use preload scripts:
 // https://www.electronjs.org/docs/latest/tutorial/process-model#preload-scripts
+import { contextBridge, ipcRenderer } from 'electron';
+
+contextBridge.exposeInMainWorld('electronWindow', {
+  minimize: () => ipcRenderer.send('window:minimize'),
+  maximize: () => ipcRenderer.send('window:maximize'),
+  close: () => ipcRenderer.send('window:close'),
+});