add save-load GPU preference handler

main.js

@@ -276,7 +276,7 @@ app.on('window-all-closed', () => {
   }
 });
 
-ipcMain.handle('launch-game', async (event, playerName, javaPath, installPath) => {
+ipcMain.handle('launch-game', async (event, playerName, javaPath, installPath, gpuPreference) => {
   try {
     const progressCallback = (message, percent, speed, downloaded, total) => {
       if (mainWindow && !mainWindow.isDestroyed()) {
@@ -291,7 +291,7 @@ ipcMain.handle('launch-game', async (event, playerName, javaPath, installPath) =
       }
     };
 
-    const result = await launchGameWithVersionCheck(playerName, progressCallback, javaPath, installPath);
+    const result = await launchGameWithVersionCheck(playerName, progressCallback, javaPath, installPath, gpuPreference);
     
     return result;
   } catch (error) {
@@ -704,6 +704,26 @@ ipcMain.handle('get-update-info', async () => {
   return updateManager.getUpdateInfo();
 });
 
+ipcMain.handle('get-gpu-info', () => {
+  try {
+    return app.getGPUInfo('complete');
+  } catch (error) {
+    console.error('Error getting GPU info:', error);
+    return {};
+  }
+});
+
+ipcMain.handle('save-gpu-preference', (event, gpuPreference) => {
+  const { saveGPUPreference } = require('./backend/launcher');
+  saveGPUPreference(gpuPreference);
+  return { success: true };
+});
+
+ipcMain.handle('load-gpu-preference', () => {
+  const { loadGPUPreference } = require('./backend/launcher');
+  return loadGPUPreference();
+});
+
 ipcMain.handle('window-close', () => {
   if (mainWindow && !mainWindow.isDestroyed()) {
     mainWindow.close();