- TestAdministratorsLastSuperuser (D-09): A and B reduce each other on the
five paths while a test transaction holds the guard's advisory lock until
pg_locks shows both requests waiting; one succeeds, one gets last_superuser
- TestAdministratorsLastSuperuserConcurrent: ten unsynchronized rounds
- TestAdministratorsLifecycle (D-10) and TestAdministratorsRevocation (D-12),
two-row bulk selections included
- TestActionExtensionBoot (-short) and TestActionExtensionRun (D-14, D-15)
- TestRolesLifecycle (D-16, D-17), TestRolesPermissionCeiling (D-07)
- TestBackendScreensActivation (-short, D-01, D-04)
- pact.HasAdminActionExtensions / AdminActionExtension: plugins add record
actions to any admin controller by ID, merged at boot before permission
validation (unknown target, no preview, duplicate name stop the boot)
- internal summercms.cabana pseudo-plugin, appended only when some plugin
registers admin controllers: Administrators list and preview, settings
link under System, backend.manage_users and backend.manage_roles with no
role grants
- backend::lang user, user.role and permissions copy (en, pl)
- smoke tests: compile-time seam and settings, Postgres list/preview/action
