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/@bcoe/v8-coverage/dist/lib/README.md

@@ -0,0 +1,11 @@
+# V8 Coverage
+
+[![npm](https://img.shields.io/npm/v/@c88/v8-coverage.svg?maxAge=2592000)](https://www.npmjs.com/package/@c88/v8-coverage)
+[![GitHub repository](https://img.shields.io/badge/Github-demurgos%2Fv8--coverage-blue.svg)](https://github.com/demurgos/v8-coverage)
+[![Build status (Travis)](https://img.shields.io/travis/demurgos/v8-coverage/master.svg?maxAge=2592000)](https://travis-ci.org/demurgos/v8-coverage)
+[![Build status (AppVeyor)](https://ci.appveyor.com/api/projects/status/qgcbdffyb9e09d0e?svg=true)](https://ci.appveyor.com/project/demurgos/v8-coverage)
+[![Codecov](https://codecov.io/gh/demurgos/v8-coverage/branch/master/graph/badge.svg)](https://codecov.io/gh/demurgos/v8-coverage)
+
+## License
+
+[MIT License](./LICENSE.md)