nginx passed X-Accel-Mapping on every request. Stylesheets are sent
from tmp/, outside that mapping, so Rack redirected nginx to their
filesystem path and the page loaded without CSS. Existing installs get
the line removed on update.
The update called yarn, which is not installed, ran Rails without the
production environment or rbenv on PATH, asked for PostgreSQL 16 on a
17 install and left sidekiq running.
Replaces the misc/build.func bootstrap with the two-root core loader.
No other change: the engine contract (var_*, update_script, start,
build_container, description) is identical on both engines.
CanbiZ (MickLesk)