=== Production Deployment Solution ===

1. Correct Architecture:
   System files: /var/www/factur-x/
   Admin panel: /var/www/factur-x/admin/
   Customer configs: /var/www/factur-x/customers/customer1/config.php

2. Creating Production-Ready Autoloader...
✓ Production autoloader created

3. Creating Customer Configuration Template...
✓ Customer config template created

4. Creating Admin Panel Fix...
✓ Admin panel updated for multi-customer support

5. Deployment Instructions:
   1. Upload system files to /var/www/factur-x/
   2. Set Apache DocumentRoot to /var/www/factur-x/admin
   3. Create customer configs in /var/www/factur-x/customers/{customer}/config.php
   4. Access admin panel: https://yourdomain.com/admin/?customer=customer1
   5. Create separate databases for each customer

=== Deployment Solution Complete ===