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/exit-x/Gruntfile.js

@@ -0,0 +1,48 @@
+'use strict';
+
+module.exports = function(grunt) {
+
+  // Project configuration.
+  grunt.initConfig({
+    nodeunit: {
+      files: ['test/**/*_test.js'],
+    },
+    jshint: {
+      options: {
+        jshintrc: '.jshintrc'
+      },
+      gruntfile: {
+        src: 'Gruntfile.js'
+      },
+      lib: {
+        src: ['lib/**/*.js']
+      },
+      test: {
+        src: ['test/**/*.js']
+      },
+    },
+    watch: {
+      gruntfile: {
+        files: '<%= jshint.gruntfile.src %>',
+        tasks: ['jshint:gruntfile']
+      },
+      lib: {
+        files: '<%= jshint.lib.src %>',
+        tasks: ['jshint:lib', 'nodeunit']
+      },
+      test: {
+        files: '<%= jshint.test.src %>',
+        tasks: ['jshint:test', 'nodeunit']
+      },
+    },
+  });
+
+  // These plugins provide necessary tasks.
+  grunt.loadNpmTasks('grunt-contrib-nodeunit');
+  grunt.loadNpmTasks('grunt-contrib-jshint');
+  grunt.loadNpmTasks('grunt-contrib-watch');
+
+  // Default task.
+  grunt.registerTask('default', ['jshint', 'nodeunit']);
+
+};