Set up comprehensive frontend testing infrastructure

- Install Jest for unit testing with React Testing Library
- Install Playwright for end-to-end testing
- Configure Jest with proper TypeScript support and module mapping
- Create test setup files and utilities for both unit and e2e tests

Components:
* Jest configuration with coverage thresholds
* Playwright configuration with browser automation
* Unit tests for LoginForm, AuthContext, and useSocketIO hook
* E2E tests for authentication, dashboard, and agents workflows
* GitHub Actions workflow for automated testing
* Mock data and API utilities for consistent testing
* Test documentation with best practices

Testing features:
- Unit tests with 70% coverage threshold
- E2E tests with API mocking and user journey testing
- CI/CD integration for automated test runs
- Cross-browser testing support with Playwright
- Authentication system testing end-to-end

🚀 Generated with [Claude Code](https://claude.ai/code)

Co-Authored-By: Claude <noreply@anthropic.com>

frontend/node_modules/@testing-library/user-event/dist/cjs/utility/index.js

@@ -0,0 +1,14 @@
+'use strict';
+
+var clear = require('./clear.js');
+var selectOptions = require('./selectOptions.js');
+var type = require('./type.js');
+var upload = require('./upload.js');
+
+
+
+exports.clear = clear.clear;
+exports.deselectOptions = selectOptions.deselectOptions;
+exports.selectOptions = selectOptions.selectOptions;
+exports.type = type.type;
+exports.upload = upload.upload;