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/async/internal/wrapAsync.js

@@ -0,0 +1,34 @@
+'use strict';
+
+Object.defineProperty(exports, "__esModule", {
+    value: true
+});
+exports.isAsyncIterable = exports.isAsyncGenerator = exports.isAsync = undefined;
+
+var _asyncify = require('../asyncify.js');
+
+var _asyncify2 = _interopRequireDefault(_asyncify);
+
+function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }
+
+function isAsync(fn) {
+    return fn[Symbol.toStringTag] === 'AsyncFunction';
+}
+
+function isAsyncGenerator(fn) {
+    return fn[Symbol.toStringTag] === 'AsyncGenerator';
+}
+
+function isAsyncIterable(obj) {
+    return typeof obj[Symbol.asyncIterator] === 'function';
+}
+
+function wrapAsync(asyncFn) {
+    if (typeof asyncFn !== 'function') throw new Error('expected a function');
+    return isAsync(asyncFn) ? (0, _asyncify2.default)(asyncFn) : asyncFn;
+}
+
+exports.default = wrapAsync;
+exports.isAsync = isAsync;
+exports.isAsyncGenerator = isAsyncGenerator;
+exports.isAsyncIterable = isAsyncIterable;