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/tldts/bin/cli.js

@@ -0,0 +1,21 @@
+#!/usr/bin/env node
+
+'use strict';
+
+const { parse } = require('..');
+const readline = require('readline');
+
+if (process.argv.length > 2) {
+  // URL(s) was specified in the command arguments
+  console.log(
+    JSON.stringify(parse(process.argv[process.argv.length - 1]), null, 2),
+  );
+} else {
+  // No arguments were specified, read URLs from each line of STDIN
+  const rlInterface = readline.createInterface({
+    input: process.stdin,
+  });
+  rlInterface.on('line', function (line) {
+    console.log(JSON.stringify(parse(line), null, 2));
+  });
+}