DELETE /api/admin/sessions/🆔 signs one session out. Your own: always. Another admin's: owners (admins.sessions) with a fresh step-up. Revokes the session's Cognito refresh token too.Staff cookie session; any admitted staff member. Write requests need same-origin JSON and X-Admin-CSRF from this session.Source snapshot: admin/src/app/api/admin/sessions/[id]/route.ts. This reference describes the current working tree, not proof of deployment. The response service types and validators remain authoritative.