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/leven/readme.md

@@ -0,0 +1,50 @@
+# leven [![Build Status](https://travis-ci.org/sindresorhus/leven.svg?branch=master)](https://travis-ci.org/sindresorhus/leven)
+
+> Measure the difference between two strings<br>
+> One of the fastest JS implementations of the [Levenshtein distance](https://en.wikipedia.org/wiki/Levenshtein_distance) algorithm
+
+
+## Install
+
+```
+$ npm install leven
+```
+
+
+## Usage
+
+```js
+const leven = require('leven');
+
+leven('cat', 'cow');
+//=> 2
+```
+
+
+## Benchmark
+
+```
+$ npm run bench
+```
+
+```
+         165,926 op/s » leven
+         164,398 op/s » talisman
+           1,044 op/s » levenshtein-edit-distance
+             628 op/s » fast-levenshtein
+             497 op/s » levenshtein-component
+             195 op/s » ld
+             190 op/s » levenshtein
+             168 op/s » levdist
+              10 op/s » natural
+```
+
+
+## Related
+
+- [leven-cli](https://github.com/sindresorhus/leven-cli) - CLI for this module
+
+
+## License
+
+MIT © [Sindre Sorhus](https://sindresorhus.com)