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

frontend/vite.config.ts

@@ -0,0 +1,27 @@
+import { defineConfig } from 'vite'
+import react from '@vitejs/plugin-react'
+import path from 'path'
+
+// https://vitejs.dev/config/
+export default defineConfig({
+  plugins: [react()],
+  resolve: {
+    alias: {
+      '@': path.resolve(__dirname, './src'),
+    },
+  },
+  server: {
+    port: 3000,
+    proxy: {
+      '/api': {
+        target: 'http://localhost:5000',
+        changeOrigin: true,
+      },
+    },
+  },
+  test: {
+    globals: true,
+    environment: 'jsdom',
+    setupFiles: ['./src/test/setup.ts'],
+  },
+})