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/http-proxy-agent/README.md

@@ -0,0 +1,44 @@
+http-proxy-agent
+================
+### An HTTP(s) proxy `http.Agent` implementation for HTTP
+
+This module provides an `http.Agent` implementation that connects to a specified
+HTTP or HTTPS proxy server, and can be used with the built-in `http` module.
+
+__Note:__ For HTTP proxy usage with the `https` module, check out
+[`https-proxy-agent`](../https-proxy-agent).
+
+
+Example
+-------
+
+```ts
+import * as http from 'http';
+import { HttpProxyAgent } from 'http-proxy-agent';
+
+const agent = new HttpProxyAgent('http://168.63.76.32:3128');
+
+http.get('http://nodejs.org/api/', { agent }, (res) => {
+  console.log('"response" event!', res.headers);
+  res.pipe(process.stdout);
+});
+```
+
+API
+---
+
+### new HttpProxyAgent(proxy: string | URL, options?: HttpProxyAgentOptions)
+
+The `HttpProxyAgent` class implements an `http.Agent` subclass that connects
+to the specified "HTTP(s) proxy server" in order to proxy HTTP requests.
+
+The `proxy` argument is the URL for the proxy server.
+
+The `options` argument accepts the usual `http.Agent` constructor options, and
+some additional properties:
+
+ * `headers` - Object containing additional headers to send to the proxy server
+   in each request. This may also be a function that returns a headers object.
+  
+   **NOTE:** If your proxy does not strip these headers from the request, they
+   will also be sent to the destination server.