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/jest-transform-stub/package.json

@@ -0,0 +1,33 @@
+{
+  "name": "jest-transform-stub",
+  "version": "2.0.0",
+  "description": "Jest transform stub",
+  "main": "index.js",
+  "files": [
+    "index.js"
+  ],
+  "scripts": {
+    "test": "jest"
+  },
+  "repository": {
+    "type": "git",
+    "url": "git+https://github.com/eddyerburgh/jest-transform-stub.git"
+  },
+  "keywords": [
+    "jest"
+  ],
+  "author": "Edd Yerburgh",
+  "license": "MIT",
+  "bugs": {
+    "url": "https://github.com/eddyerburgh/jest-transform-stub/issues"
+  },
+  "homepage": "https://github.com/eddyerburgh/jest-transform-stub#readme",
+  "devDependencies": {
+    "jest": "^22.4.2"
+  },
+  "jest": {
+    "transform": {
+      ".+\\.png$": "<rootDir>/index.js"
+    }
+  }
+}