OptionalacceptedOptionalaliasReasons for the aliases the diff was run with (appliedKeyAliases), keyed
by head key, so a carried-forward entry keeps its original provenance
instead of reading as freshly derived. Absent reasons fall back to
alias:replayed.
OptionalaliasExplicit relations carried by an incoming lineage. A v1 reason is free form, so replay must not infer a different relation from its prefix.
Successor claims a human accepted; these become
replacedentries.