refactor: flatten monorepo structure to backend/ frontend/ devops/

Rename subdirectories for a cleaner single-repo layout:
- website-monitoring-backend/  → backend/
- website-monitoring-frontend/ → frontend/
- website-monitoring-devops/   → devops/

Update all references in package.json scripts, CI workflows,
docker-compose, pre-commit hooks, and documentation.

Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>

frontend/scripts/setup-cron.sh

@@ -0,0 +1,89 @@
+#!/bin/bash
+
+# Lighthouse Scanner Cron Job Setup Script
+# This script helps you set up automated scanning for your website monitoring application
+
+set -e
+
+echo "🚀 Lighthouse Scanner Cron Job Setup"
+echo "====================================="
+
+# Check if we're in the right directory
+if [ ! -f "package.json" ]; then
+    echo "❌ Error: Please run this script from your project root directory"
+    exit 1
+fi
+
+# Check if vercel.json exists
+if [ -f "vercel.json" ]; then
+    echo "✅ Found vercel.json - Vercel cron jobs are configured"
+    echo "   Schedule: Every 6 hours"
+    echo "   Endpoint: /api/cron/scan?mode=all"
+    echo ""
+    echo "📝 To deploy with Vercel cron jobs:"
+    echo "   1. Deploy to Vercel: vercel --prod"
+    echo "   2. Cron jobs will start automatically"
+    echo ""
+fi
+
+# Check if GitHub Actions workflow exists
+if [ -f ".github/workflows/cron-scan.yml" ]; then
+    echo "✅ Found GitHub Actions workflow"
+    echo "   Schedule: Every 6 hours"
+    echo "   File: .github/workflows/cron-scan.yml"
+    echo ""
+    echo "📝 To use GitHub Actions:"
+    echo "   1. Push this repository to GitHub"
+    echo "   2. Set DEPLOYMENT_URL secret in repository settings"
+    echo "   3. Workflow will run automatically"
+    echo ""
+fi
+
+# Check environment variables
+echo "🔧 Environment Check:"
+if [ -f ".env" ]; then
+    echo "✅ Found .env file"
+    
+    # Check for required Supabase variables
+    if grep -q "NEXT_PUBLIC_SUPABASE_URL" .env; then
+        echo "✅ NEXT_PUBLIC_SUPABASE_URL is configured"
+    else
+        echo "❌ NEXT_PUBLIC_SUPABASE_URL is missing"
+    fi
+    
+    if grep -q "NEXT_PUBLIC_SUPABASE_ANON_KEY" .env; then
+        echo "✅ NEXT_PUBLIC_SUPABASE_ANON_KEY is configured"
+    else
+        echo "❌ NEXT_PUBLIC_SUPABASE_ANON_KEY is missing"
+    fi
+    
+    if grep -q "SUPABASE_SERVICE_ROLE_KEY" .env; then
+        echo "✅ SUPABASE_SERVICE_ROLE_KEY is configured"
+    else
+        echo "❌ SUPABASE_SERVICE_ROLE_KEY is missing"
+    fi
+else
+    echo "❌ No .env file found"
+    echo "   Please create .env file with your Supabase configuration"
+fi
+
+echo ""
+echo "📚 Documentation:"
+echo "   - Cron setup guide: docs/cron-setup-guide.md"
+echo "   - Database setup: setup-database.sql"
+echo ""
+
+echo "🎯 Next Steps:"
+echo "   1. Ensure your database is set up with all required tables"
+echo "   2. Configure your environment variables"
+echo "   3. Deploy your application"
+echo "   4. Set up cron jobs using one of the methods above"
+echo "   5. Test the system by visiting your dashboard"
+echo ""
+
+echo "🔍 Testing:"
+echo "   You can test the cron endpoint manually:"
+echo "   curl -X POST 'https://your-domain.com/api/cron/scan?mode=all'"
+echo ""
+
+echo "✅ Setup complete! Check the documentation for detailed instructions."