Counter incoming BG matching before Fremen Ambassador relocation

Bind the selected packet to its original allied grant before transfer or collection. Preserve the committed trigger, restore legal replacement choices after prevention and resume the original movement once.

components/ambassador-movement.tsx

@@ -4,6 +4,7 @@ import { useId, useState } from 'react';
 import type { Action, GameView } from '@/game/engine';
 import { location, splitLocation, territory } from '@/game/board';
 import { sandmasterDestinationCollection } from '@/game/sandmaster-movement';
+import { quoteAdvisorAmbassadorMatching, AdvisorAmbassadorMatchingError } from '@/game/advisor-ambassador-matching';
 import { Button } from './ui/button';
 import { Input } from './ui/input';
 
@@ -94,8 +95,18 @@ export function AmbassadorMovement({
     sandmaster?.piles.some((pile) => pile.key === sandmasterSelection.key)
       ? sandmasterSelection.key
       : sandmaster?.key;
+  let matchingBlock:string|null=null;
+  if(destination&&total>0){
+    try{
+      quoteAdvisorAmbassadorMatching({...game,pendingAmbassador:{...entry,turn:game.turn,phase:game.phase,
+        beneficiary:game.me},advisorAmbassadorMatchingDenied:entry.matchingDenied},
+        {parent:entry.event,owner:game.me,origin:source.territory,destination:destination.territory,
+          sector:destination.sector,advisors:destination.advisors,group:selectedForces});
+    }catch(error){if(!(error instanceof AdvisorAmbassadorMatchingError))throw error;matchingBlock=error.message;}
+  }
   const reason =
     destination?.blocked ??
+    matchingBlock ??
     (!destination
       ? 'Choose an available destination.'
       : !total && !includesMarker
@@ -121,6 +132,9 @@ export function AmbassadorMovement({
         Relocate a group from one territory. This does not spend your ordinary
         shipment or movement. The Ambassador has already been triggered.
       </p>
+      {game.advanced&&game.players.find(player=>player.id===game.me)?.faction==='beneGesserit'&&(
+        <p className="notice">An opposite-type incoming group has a separate matching response before relocation. If matching is prevented, choose another legal packet or destination; the original trigger stays committed.</p>
+      )}
       <label className="flex flex-col gap-2" htmlFor={`${id}-source`}>
         Source territory
         <select

components/game-table.tsx

@@ -2503,6 +2503,13 @@ export function GameTable({
                   {' '}Any already-played movement or declaration card keeps its original use. Choose a legal replacement if matching is prevented.
                 </p>
               )}
+              {g.response.kind==='advisorFlip'&&g.response.advisorAmbassadorMatchingSource&&(
+                <p className="notice">
+                  The incoming Fremen Ambassador group must match your resident forces. No selected force has moved or collected spice yet.
+                  {' '}Preventing matching restores the original relocation choice and blocks this same packet here for this Ambassador event.
+                  {' '}The trigger stays committed; your ordinary shipment and movement remain unchanged.
+                </p>
+              )}
               {g.response.kind==='advisorFlip'&&g.response.spiritualAdvisorSource&&(
                 <p className="notice">
                   The free advisor packet must become fighters to match your Polar Sink residents. No free force has arrived yet.