AI Business Builder - Self Installer Version

How to install on Namecheap/cPanel:
1. Upload this ZIP to public_html or a subfolder like public_html/aibuilder
2. Extract the ZIP
3. Create MySQL database + user from cPanel > MySQL Databases
4. Open yourdomain.com/aibuilder/install.php
5. Enter DB details and admin email/password
6. Click Install Now
7. Login and create your first business

Important:
- Delete install.php after successful installation for security.
- This is Phase 1 MVP for testing, not a production SaaS yet.
- Works with PHP 8.1+ and MySQL.
