**As** an OpenProject system administrator
**I want to** see every membership across all projects in one filterable list
**so that** I can find out who holds a given role — including in archived projects — without opening each project's member list.

**Acceptance criteria**

* New admin page "Memberships" at `/admin/members`, reachable from Administration → Users and permissions.

* Begin of the insertionShow a [Border Box Table](https://qa.openproject-edge.com/lookbook/pages/components/tables/border_box_table),

* End of the insertion One row per membership showing: user (avatar + name), project, roles. Begin of the insertion

End of the insertion Begin of the deletion

End of the deletion * Global memberships show "Global" in place of a project. Begin of the insertion

End of the insertion Begin of the deletion

End of the deletion * When a membership is coming in through a group membership show "(via: Group <GROUPNAME>)" next to the user to indicate they have not gotten the membership directly Begin of the insertion

End of the insertion Begin of the deletion

End of the deletion * Memberships in **archived** projects are listed; their project name renders as plain text (archived projects have no page an admin can open). Begin of the insertion

End of the insertion Begin of the deletion

End of the deletion * Project names link to the project; role names link to the role's edit page. Begin of the insertion

End of the insertion Begin of the deletion

End of the deletion * Begin of the insertionOn the subheader,

* End of the insertion A search input ("Search users") filters by the principal's name attributes. Begin of the insertion

End of the insertion Begin of the deletion

End of the deletion * Three multi-select quick filters: Member type (user / group / placeholder user), Project, Role. Begin of the insertion

End of the insertion Begin of the deletion

End of the deletion * The list is paginated.