feat: Complete implementation of Tasks 1-5 - CIM Document Processor

Backend Infrastructure:
- Complete Express server setup with security middleware (helmet, CORS, rate limiting)
- Comprehensive error handling and logging with Winston
- Authentication system with JWT tokens and session management
- Database models and migrations for Users, Documents, Feedback, and Processing Jobs
- API routes structure for authentication and document management
- Integration tests for all server components (86 tests passing)

Frontend Infrastructure:
- React application with TypeScript and Vite
- Authentication UI with login form, protected routes, and logout functionality
- Authentication context with proper async state management
- Component tests with proper async handling (25 tests passing)
- Tailwind CSS styling and responsive design

Key Features:
- User registration, login, and authentication
- Protected routes with role-based access control
- Comprehensive error handling and user feedback
- Database schema with proper relationships
- Security middleware and validation
- Production-ready build configuration

Test Coverage: 111/111 tests passing
Tasks Completed: 1-5 (Project setup, Database, Auth system, Frontend UI, Backend infrastructure)

Ready for Task 6: File upload backend infrastructure

backend/src/routes/auth.ts

@@ -0,0 +1,59 @@
+import { Router } from 'express';
+import { 
+  register, 
+  login, 
+  logout, 
+  refreshToken, 
+  getProfile, 
+  updateProfile 
+} from '../controllers/authController';
+import { 
+  authenticateToken, 
+  authRateLimit 
+} from '../middleware/auth';
+
+const router = Router();
+
+/**
+ * @route   POST /api/auth/register
+ * @desc    Register a new user
+ * @access  Public
+ */
+router.post('/register', authRateLimit, register);
+
+/**
+ * @route   POST /api/auth/login
+ * @desc    Login user
+ * @access  Public
+ */
+router.post('/login', authRateLimit, login);
+
+/**
+ * @route   POST /api/auth/logout
+ * @desc    Logout user
+ * @access  Private
+ */
+router.post('/logout', authenticateToken, logout);
+
+/**
+ * @route   POST /api/auth/refresh
+ * @desc    Refresh access token
+ * @access  Public
+ */
+router.post('/refresh', authRateLimit, refreshToken);
+
+/**
+ * @route   GET /api/auth/profile
+ * @desc    Get current user profile
+ * @access  Private
+ */
+router.get('/profile', authenticateToken, getProfile);
+
+/**
+ * @route   PUT /api/auth/profile
+ * @desc    Update current user profile
+ * @access  Private
+ */
+router.put('/profile', authenticateToken, updateProfile);
+
+export default router;