Demo customer app

This repository layout is the template for Werft-managed customer software. The application is deliberately trivial: an nginx serving a page generated from chart/files/, plus an optional tiny seeded Postgres.

• CHANGES.md: the Werft coder appends one line per resolved issue.
• chart/: the Helm chart deployed to previews (pr-<n>.<tenant>.localtest.me) and prod (prod.<tenant>.localtest.me).
• chart/files/marker.txt: the visible marker the coder rewrites; end-to-end tests assert its content on the rendered page.