Contract 5 §4 composed in full (fail-closed §4.4, CLI parity §4.5,
correlation id returned in result); idempotency re-attributed to
contract 3 §4.3 (via §7 item 4) and designed to the full fence/replay
envelope; harness error-code split fixed; full write-consumer set;
intake credential write joins the transaction; audit linkage pinned
FK-free; custody-schema cited at rev 13; witnesses 9-11 added
(correlation, CLI parity, fail-closed) plus the full §4.3 replay set.
Design note for the rank-4 enrollment command family: contract
composition (contract 5 rank-4 row + envelope, contract 3 §3.5,
custody-schema rev 4 FK binding), assignment-scope pin per D11,
measured current state, command surface with closed error enum,
additive schema delta plan (0021), and the witness list the
implementation slice must ship. Amends no contract.