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/package.json

@@ -10,7 +10,14 @@
     "preview": "vite preview --host 0.0.0.0 --port 3000",
     "lint": "eslint . --ext ts,tsx --report-unused-disable-directives --max-warnings 0",
     "lint:fix": "eslint . --ext ts,tsx --fix",
-    "type-check": "tsc --noEmit"
+    "type-check": "tsc --noEmit",
+    "test": "jest",
+    "test:watch": "jest --watch",
+    "test:coverage": "jest --coverage",
+    "test:e2e": "playwright test",
+    "test:e2e:ui": "playwright test --ui",
+    "test:e2e:debug": "playwright test --debug",
+    "test:all": "npm run test && npm run test:e2e"
   },
   "dependencies": {
     "@headlessui/react": "^1.7.17",
@@ -37,6 +44,11 @@
     "zustand": "^4.4.7"
   },
   "devDependencies": {
+    "@playwright/test": "^1.54.0",
+    "@testing-library/jest-dom": "^6.6.3",
+    "@testing-library/react": "^16.3.0",
+    "@testing-library/user-event": "^14.6.1",
+    "@types/jest": "^30.0.0",
     "@types/node": "^20.0.0",
     "@types/react": "^18.2.43",
     "@types/react-dom": "^18.2.17",
@@ -47,8 +59,13 @@
     "eslint": "^8.55.0",
     "eslint-plugin-react-hooks": "^4.6.0",
     "eslint-plugin-react-refresh": "^0.4.5",
+    "identity-obj-proxy": "^3.0.0",
+    "jest": "^30.0.4",
+    "jest-environment-jsdom": "^30.0.4",
+    "jest-transform-stub": "^2.0.0",
     "postcss": "^8.4.32",
     "tailwindcss": "^3.3.6",
+    "ts-jest": "^29.4.0",
     "typescript": "^5.6.3",
     "vite": "^5.4.10"
   },