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/lz-string/bin/bin.js

@@ -0,0 +1,13 @@
+#! /usr/bin/env node
+var lzString = require('../libs/lz-string.js');
+var fs = require('fs');
+
+if (process.argv.length < 3) {
+  console.error('Usage: lz-string <input_file>');
+  process.exit(1);
+}
+
+console.log(lzString.compress(fs.readFileSync(process.argv[2], {
+  encoding: 'utf8',
+})));
+