Hostsharing recommends assigning domains to separate domain admins rather
than to the package admin, and all their service guides (Mattermost,
Tomcat, Nextcloud) run the daemon as its own user. For GitTally the
argument is stronger: it checks out foreign commits and executes their
build scripts, so running as the package admin would undo the sandbox
rationale of this step. The service user has to be named when ordering
the daemon port anyway.
Also records a trap found on the way: the RAM contingent is a package
slice, not a per-user quota, so a dedicated user buys isolation but no
extra memory — a runaway Gradle build could starve the whole webspace.
The unit from `init --systemd` sets neither MemoryMax nor TasksMax today,
so adding them (configurable, empty = unset) becomes part of step 17.
Co-Authored-By: Claude <noreply@anthropic.com>
