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/strip-bom/readme.md

@@ -0,0 +1,54 @@
+# strip-bom [![Build Status](https://travis-ci.org/sindresorhus/strip-bom.svg?branch=master)](https://travis-ci.org/sindresorhus/strip-bom)
+
+> Strip UTF-8 [byte order mark](https://en.wikipedia.org/wiki/Byte_order_mark#UTF-8) (BOM) from a string
+
+From Wikipedia:
+
+> The Unicode Standard permits the BOM in UTF-8, but does not require nor recommend its use. Byte order has no meaning in UTF-8.
+
+---
+
+<div align="center">
+	<b>
+		<a href="https://tidelift.com/subscription/pkg/npm-strip-bom?utm_source=npm-strip-bom&utm_medium=referral&utm_campaign=readme">Get professional support for 'strip-bom' with a Tidelift subscription</a>
+	</b>
+	<br>
+	<sub>
+		Tidelift helps make open source sustainable for maintainers while giving companies<br>assurances about security, maintenance, and licensing for their dependencies.
+	</sub>
+</div>
+
+---
+
+## Install
+
+```
+$ npm install strip-bom
+```
+
+
+## Usage
+
+```js
+const stripBom = require('strip-bom');
+
+stripBom('\uFEFFunicorn');
+//=> 'unicorn'
+```
+
+
+## Security
+
+To report a security vulnerability, please use the [Tidelift security contact](https://tidelift.com/security). Tidelift will coordinate the fix and disclosure.
+
+
+## Related
+
+- [strip-bom-cli](https://github.com/sindresorhus/strip-bom-cli) - CLI for this module
+- [strip-bom-buf](https://github.com/sindresorhus/strip-bom-buf) - Buffer version of this module
+- [strip-bom-stream](https://github.com/sindresorhus/strip-bom-stream) - Stream version of this module
+
+
+## License
+
+MIT © [Sindre Sorhus](https://sindresorhus.com)