Three surfaces create client accounts now: the staff screens,
/api/v1/clients, and the platform control plane in the private package.
Two of them held their own copy of the type, the role, the active flag,
the "0 means inherit the site default" quota, the verified stamp, the
activity entry and the seat guard — and the third could not have a copy
at all, because a package cannot import a host class.
ClientAccounts is that one definition, reached by name from outside.
What stays with each caller is what genuinely differs: its validation,
its response, its custom fields, and who is asking.
Two things changed rather than moved:
The seat cap is now checked inside create(), before anything is written,
instead of at the top of each controller. That is what makes a leaked
platform token an incident rather than an unbounded one — a guard that
ran only where somebody remembered it is not a guard.
email_verified_at is written with forceFill. It is deliberately absent
from User::$fillable, so every client-creation path passed it into a mass
assignment and lost it in silence. StaffAccounts already noted this and
named the other paths; this closes the client half.