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/char-regex/README.md

@@ -0,0 +1,27 @@
+# Char Regex [![Travis CI Build Status](https://img.shields.io/travis/com/Richienb/char-regex/master.svg?style=for-the-badge)](https://travis-ci.com/Richienb/char-regex)
+
+A regex to match any full character, considering weird character ranges. Tested on every single emoji and unicode character. Based on the Lodash implementation.
+
+[![NPM Badge](https://nodei.co/npm/char-regex.png)](https://npmjs.com/package/char-regex)
+
+## Install
+
+```sh
+npm install char-regex
+```
+
+## Usage
+
+```js
+const charRegex = require("char-regex");
+
+"❤️👊🏽".match(/./);
+//=> ["", "", "", "", "", "", ""]
+
+"❤️👊🏽".match(charRegex());
+//=> ["❤️", "👊🏽"]
+```
+
+## API
+
+### charRegex()