Drop the (§2 carve-out) suffix from the describe block — no other test in this file references spec sections. Switch it() titles from 'emits X' to 'encodes X as Y' to match the existing converts/normalizes verb pattern.
Per §9.1 v3.2, empty arrays MUST emit as `key: []` (and `- []` after a
list-item marker), not as `key[0]:`. The header-only emission is now
reserved for non-empty arrays.
Johann Schopplich