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/jake/lib/task/directory_task.js

@@ -0,0 +1,30 @@
+let fs = require('fs');
+let FileTask = require('./file_task').FileTask;
+
+/**
+  @name jake
+  @namespace jake
+*/
+/**
+  @name jake.DirectoryTask
+  @constructor
+  @augments EventEmitter
+  @augments jake.Task
+  @augments jake.FileTask
+  @description A Jake DirectoryTask
+
+  @param {String} name The name of the directory to create.
+ */
+class DirectoryTask extends FileTask {
+  constructor(...args) {
+    super(...args);
+    if (fs.existsSync(this.name)) {
+      this.updateModTime();
+    }
+    else {
+      this.modTime = null;
+    }
+  }
+}
+
+exports.DirectoryTask = DirectoryTask;