chore: Implement authentication fixes for TestDataManager and update user management tests

- Refactored TestDataManager to use authenticated context with Playwright's newContext method.
- Updated auth-fixtures to ensure proper authentication state is inherited for API requests.
- Created constants.ts to avoid circular imports and manage shared constants.
- Fixed critical bug in auth setup that caused E2E tests to fail due to improper imports.
- Re-enabled user management tests with updated selectors and added comments regarding current issues.
- Documented environment configuration issues causing cookie domain mismatches in skipped tests.
- Generated QA report detailing test results and recommendations for further action.

tests/auth.setup.ts

@@ -1,6 +1,5 @@
 import { test as setup, expect } from '@bgotink/playwright-coverage';
-import { fileURLToPath } from 'url';
-import { dirname, join } from 'path';
+import { STORAGE_STATE } from './constants';
 
 /**
  * Authentication Setup for E2E Tests
@@ -20,9 +19,8 @@ const TEST_EMAIL = process.env.E2E_TEST_EMAIL || 'e2e-test@example.com';
 const TEST_PASSWORD = process.env.E2E_TEST_PASSWORD || 'TestPassword123!';
 const TEST_NAME = process.env.E2E_TEST_NAME || 'E2E Test User';
 
-const __filename = fileURLToPath(import.meta.url);
-const __dirname = dirname(__filename);
-export const STORAGE_STATE = join(__dirname, '../playwright/.auth/user.json');
+// Re-export STORAGE_STATE for backwards compatibility with playwright.config.js
+export { STORAGE_STATE };
 
 setup('authenticate', async ({ request, baseURL }) => {
   // Step 1: Check if setup is required