Programmatic-contract violation thrown by ContainmentApi.move().
These are NOT user-input failures — user-facing commands (go, get,
drop) should validate and produce friendly messages before calling
move(). ContainmentError exists to catch seeder/test/scripted bugs.
Programmatic-contract violation thrown by
ContainmentApi.move().These are NOT user-input failures — user-facing commands (
go,get,drop) should validate and produce friendly messages before callingmove().ContainmentErrorexists to catch seeder/test/scripted bugs.