Testf from IP to localhost. Fixed some tests.

tests/login-language-selection-russian.spec.ts

@@ -6,7 +6,7 @@ import { test, expect } from '@playwright/test';
 test.describe('I. Core & Authentication', () => {
   test('A. Login - Language Selection (Russian)', async ({ page }) => {
     // 1. Navigate to the login page.
-    await page.goto('http://192.168.50.234:3000/');
+    await page.goto('http://localhost:3000/');
 
     // 2. Select 'Русский' from the language dropdown.
     await page.getByRole('combobox').selectOption(['Русский']);