Audit logging, soft-delete management, and entity views

Entity audit logging - every create, update, and delete is now tracked with change diffs, cascade context, and the user who made the change. Browse the history on any entity's view page.

Soft-delete management - Active/Deleted tabs on all curator list pages. Curators can restore soft-deleted entities, and admins can permanently delete them (with type-to-confirm safety).

Curator view pages - read-only detail pages for all entity types with full data display, activity logs, and links to public pages and edit forms.

Admin audit log - a dedicated admin page for reviewing role changes, lookup value updates, and other admin-only operations.