Walk the request body and return the set of fine-grained actions it
covers. Uses ACTIONS_BY_FIELD from the generated table to map dotted
paths back to actions, then compares against currentBuy to pick
direction-specific siblings.
Returns an empty array when the request touches no recognized field
(e.g. only idempotency_key / revision / account were set).
Walk the request body and return the set of fine-grained actions it covers. Uses
ACTIONS_BY_FIELDfrom the generated table to map dotted paths back to actions, then compares againstcurrentBuyto pick direction-specific siblings.Returns an empty array when the request touches no recognized field (e.g. only
idempotency_key/revision/accountwere set).