pub const USER_FIELDS: &[AdminField];Expand description
Fields the built-in User model exposes via the schema. Kept as a
const so tests and the schema exporter reference the same source
of truth. password_hash is marked editable: false so no future
UI layer accidentally surfaces the hash in a form; created_at
mirrors the rustio_users.created_at column so the schema doesn’t
under-describe the actual table shape.