fix: use window.maximize() instead of explicit workArea dimensions

Electron screen.workArea is unreliable on KDE — returns full bounds,
causing the window to extend behind the taskbar. Delegating to the native
WM via mainWindow.maximize() works correctly on KDE, macOS, and Linux.

src/main/index.ts

@@ -1,4 +1,4 @@
-import { app, BrowserWindow, ipcMain, screen } from 'electron';
+import { app, BrowserWindow, ipcMain } from 'electron';
 import * as path from 'path';
 import * as os from 'os';
 import { loadSeedConfig } from './config_loader';
@@ -18,13 +18,9 @@ async function createWindow() {
     cachedFullConfig = await fetchFullConfig(cachedSeed);
   }
 
-  const { workArea } = screen.getPrimaryDisplay();
-
   mainWindow = new BrowserWindow({
-    width: workArea.width,
-    height: workArea.height,
-    x: workArea.x,
-    y: workArea.y,
+    width: 1280,
+    height: 800,
     title: 'OSIT Aether Launcher (Native)',
     webPreferences: {
       preload: path.join(__dirname, '../preload/index.js'),
@@ -33,6 +29,10 @@ async function createWindow() {
     },
   });
 
+  // Let the native window manager maximize — more reliable than using screen.workArea,
+  // which Electron under-reports on KDE and other Linux DEs.
+  mainWindow.maximize();
+
   let targetUrl = 'http://demo.localhost:5173';
   if (cachedFullConfig && cachedFullConfig.native_device) {
     const device = cachedFullConfig.native_device;