removed express backend & added new ipc

frontend/src/background.js

@@ -4,8 +4,8 @@ import { app, protocol, BrowserWindow } from 'electron';
 import { createProtocol } from 'vue-cli-plugin-electron-builder/lib';
 import installExtension, { VUEJS3_DEVTOOLS } from 'electron-devtools-installer';
 const isDevelopment = process.env.NODE_ENV !== 'production';
+const path = require( 'path' );
 
-require( './app.js' )
 
 // Scheme must be registered before the app is ready
 protocol.registerSchemesAsPrivileged([
@@ -22,10 +22,10 @@ async function createWindow() {
       // Use pluginOptions.nodeIntegration, leave this alone
       // See nklayman.github.io/vue-cli-plugin-electron-builder/guide/security.html#node-integration for more info
       nodeIntegration: process.env.ELECTRON_NODE_INTEGRATION,
-      contextIsolation: !process.env.ELECTRON_NODE_INTEGRATION
+      contextIsolation: !process.env.ELECTRON_NODE_INTEGRATION,
     }
   })
-
+  
   if (process.env.WEBPACK_DEV_SERVER_URL) {
     // Load the url of the dev server if in development mode
     await win.loadURL(process.env.WEBPACK_DEV_SERVER_URL)
@@ -35,6 +35,7 @@ async function createWindow() {
     // Load the index.html when not in development
     win.loadURL('app://./index.html')
   }
+  require( './app.js' )( win );
 }
 
 // Quit when all windows are closed.