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>

.github/workflows/frontend-tests.yml

@@ -0,0 +1,96 @@
+name: Frontend Tests
+
+on:
+  push:
+    branches: [ master, main, develop ]
+    paths:
+      - 'frontend/**'
+      - '.github/workflows/frontend-tests.yml'
+  pull_request:
+    branches: [ master, main, develop ]
+    paths:
+      - 'frontend/**'
+      - '.github/workflows/frontend-tests.yml'
+
+jobs:
+  unit-tests:
+    runs-on: ubuntu-latest
+    
+    defaults:
+      run:
+        working-directory: ./frontend
+    
+    steps:
+    - uses: actions/checkout@v4
+    
+    - name: Setup Node.js
+      uses: actions/setup-node@v4
+      with:
+        node-version: '18'
+        cache: 'npm'
+        cache-dependency-path: frontend/package-lock.json
+    
+    - name: Install dependencies
+      run: npm ci
+    
+    - name: Run type checking
+      run: npm run type-check
+    
+    - name: Run linting
+      run: npm run lint
+    
+    - name: Run unit tests
+      run: npm run test:coverage
+    
+    - name: Upload coverage reports
+      uses: codecov/codecov-action@v4
+      with:
+        flags: frontend
+        directory: ./frontend/coverage
+
+  e2e-tests:
+    runs-on: ubuntu-latest
+    
+    defaults:
+      run:
+        working-directory: ./frontend
+    
+    steps:
+    - uses: actions/checkout@v4
+    
+    - name: Setup Node.js
+      uses: actions/setup-node@v4
+      with:
+        node-version: '18'
+        cache: 'npm'
+        cache-dependency-path: frontend/package-lock.json
+    
+    - name: Install dependencies
+      run: npm ci
+    
+    - name: Install Playwright Browsers
+      run: npx playwright install --with-deps chromium
+    
+    - name: Build frontend
+      run: npm run build
+    
+    - name: Run Playwright tests
+      run: npm run test:e2e
+      env:
+        CI: true
+    
+    - name: Upload Playwright Report
+      uses: actions/upload-artifact@v4
+      if: always()
+      with:
+        name: playwright-report
+        path: frontend/playwright-report/
+        retention-days: 30
+    
+    - name: Upload E2E Test Results
+      uses: actions/upload-artifact@v4
+      if: always()
+      with:
+        name: e2e-results
+        path: frontend/e2e-results.xml
+        retention-days: 30