Resolve one statement's verb/menu boundary, applying the enclosing menu
context. Mirrors pathresolve's base rule: a :/bare directive and an
absolute (/) statement resolve at the root; everything else inherits
context. Substitution-headed and variable-segment statements are unknown
— offline refuses rather than guessing (the Q3/Q4/Q14 fail-closed floor).
Resolve one statement's verb/menu boundary, applying the enclosing menu
context. Mirrorspathresolve's base rule: a:/bare directive and an absolute (/) statement resolve at the root; everything else inheritscontext. Substitution-headed and variable-segment statements areunknown— offline refuses rather than guessing (the Q3/Q4/Q14 fail-closed floor).