Support paid current-turn travel deals

docs/PUBLIC_DEALS.md

@@ -12,6 +12,14 @@ count. The existing native travel planner enforces the accepted term and
 provides the owner's next legal action; it grants no extra transport. A later
 autopilot handover uses that same guide.
 
+A two-party offer can also pair that term with an immediate ordinary bribe
+from the proposer to the traveler. Final acceptance binds the travel and
+settles the payment together; if either cannot proceed, neither takes effect.
+The payer loses the spice immediately, and the recipient's share becomes
+spendable at the next Mentat opening, so it cannot fund this turn's travel.
+Later mutual release does not refund the settled bribe. Reverse payments,
+deferred payments in the same offer and multi-party paid travel remain open.
+
 Each receipt retains its public-deal identity, independent of Truthtrance
 history and cards. Unanimous release frees only that agreement; completion,
 mutual release and a term made impossible are shown separately. A bounded