200 OK: The user permissions are retrieved successfully. When the
permission-sets feature flag is enabled, data also carries
effective_permissions — the union of assistant (agent) scopes granted
by every permission set that reaches the user (assigned directly or
inherited via team membership; e.g. edit: ["project", "team"] means
the user can edit assistants in projects they access AND assistants
shared with admin access with their teams, while all subsumes every
other scope) — and permission_sets, the contributing sets with their
source (direct or team).