Overview
Returns a single operator user identified by operatorUserId.

User scoping
Admin endpoint. Only operator users can call this endpoint (dj-client: OPERATOR).

Store scoping
dj-store and dj-store-view define the request context. The returned operator user includes stores when a store restriction is configured.

Visibility
The operator user is returned only if it is within the visibility scope of the authenticated operator user (permissions and organisational scope).

Scope of data returned
Returns identity fields, groups, status, and store restriction (stores). It does not include sensitive credentials (passwords, secrets).

Errors
Returns authentication errors (401), authorization errors (403), not found (404), and unexpected server errors (500).