Initial implementation of Website Change Detection Monitor MVP

Features implemented:
- Backend API with Express + TypeScript
- User authentication (register/login with JWT)
- Monitor CRUD operations with plan-based limits
- Automated change detection engine
- Email alert system
- Frontend with Next.js + TypeScript
- Dashboard with monitor management
- Login/register pages
- Monitor history viewer
- PostgreSQL database schema
- Docker setup for local development

Technical stack:
- Backend: Express, TypeScript, PostgreSQL, Redis (ready)
- Frontend: Next.js 14, React Query, Tailwind CSS
- Database: PostgreSQL with migrations
- Services: Page fetching, diff detection, email alerts

Documentation:
- README with full setup instructions
- SETUP guide for quick start
- PROJECT_STATUS with current capabilities
- Complete technical specifications

Ready for local testing and feature expansion.

Co-Authored-By: Claude Sonnet 4.5 <noreply@anthropic.com>

frontend/app/page.tsx

@@ -0,0 +1,26 @@
+'use client'
+
+import { useEffect } from 'react'
+import { useRouter } from 'next/navigation'
+import { isAuthenticated } from '@/lib/auth'
+
+export default function Home() {
+  const router = useRouter()
+
+  useEffect(() => {
+    if (isAuthenticated()) {
+      router.push('/dashboard')
+    } else {
+      router.push('/login')
+    }
+  }, [router])
+
+  return (
+    <div className="flex min-h-screen items-center justify-center">
+      <div className="text-center">
+        <h1 className="text-4xl font-bold">Website Monitor</h1>
+        <p className="mt-4 text-gray-600">Loading...</p>
+      </div>
+    </div>
+  )
+}