fix: call initializeShellEnv directly in app ready handler (#7228)

Move the shell environment initialization from module-level into the
app ready callback, avoiding a dangling promise at import time.

packages/bruno-electron/src/index.js

@@ -5,9 +5,6 @@ const isDev = require('electron-is-dev');
 const os = require('os');
 const { initializeShellEnv } = require('@usebruno/requests');
 
-// Fetch shell environment early (before app ready)
-const shellEnvPromise = initializeShellEnv();
-
 if (isDev) {
   if (!fs.existsSync(path.join(__dirname, '../../bruno-js/src/sandbox/bundle-browser-rollup.js'))) {
     console.log('JS Sandbox libraries have not been bundled yet');
@@ -160,7 +157,7 @@ if (useSingleInstance && !gotTheLock) {
 // Prepare the renderer once the app is ready
 app.on('ready', async () => {
   // Ensure shell environment is loaded before any operations that need it
-  await shellEnvPromise;
+  await initializeShellEnv();
 
   if (isDev) {
     const { installExtension, REDUX_DEVTOOLS, REACT_DEVELOPER_TOOLS } = require('electron-devtools-installer');