Environment scaffold

The container stack is up.

This is the placeholder view shipped with the Docker environment. Seeing it means nginx, PHP-FPM and the application bootstrap are all working, and that the tenant configuration mount was present and readable at startup.

PHP: 8.5.3
Laravel: 13.23.0
Environment: staging
CSS: Bootstrap — themed via CSS custom properties

Next: read CLAUDE.md for how tenancy, theming and the hand-over contract work before adding application code.