Support Advanced native Homeworld return

game/engine.ts

@@ -31921,7 +31921,11 @@ function findLegalBattlePlan(
           for (let source = 0; source < (nativeFee ? nativeSources?.length ?? 0 : 1); source++) {
             for (const n of numerical) {
               const candidate: Partial<Plan> = { ...partial, ...n };
-              if (nativeFee) candidate.reinforcementsSources = nativeSources![source];
+              if (nativeFee) {
+                candidate.reinforcementsSources = nativeSources![source];
+                candidate.reinforcementsElite = Object.values(candidate.reinforcementsSources)
+                  .reduce((sum, forces) => sum + forces.elite, 0);
+              }
               if (!accepts(candidate)) continue;
               try {
                 return validatePlan(g, p, candidate, promises);
@@ -31931,6 +31935,7 @@ function findLegalBattlePlan(
               if (alternateSpecial) {
                 candidate.planetologistSpecial = true;
                 delete candidate.reinforcementsSources;
+                delete candidate.reinforcementsElite;
                 try {
                   return validatePlan(g, p, candidate, promises);
                 } catch (error) {
@@ -38416,9 +38421,12 @@ function declareHomeworldShipment(g: Game, p: Player, intent: HomeworldShipmentI
   } else continueHomeworldShipment(g, shipment);
 }
 function homeworldUsesGuildTransport(g: Game,
-  shipment: HomeworldShipmentIntent & {route?: 'arrakis'}): boolean {
+  shipment: HomeworldShipmentIntent & {route?: 'arrakis'; guildTransportEvent?: string}): boolean {
+  // The revised Advanced rules grant World-to-World transport to every
+  // faction. Preserve already-open native Guild permission windows in saves.
   return getPlayer(g, shipment.player).faction === 'guild' &&
-    (shipment.route === 'arrakis' || shipment.destination === 'homeworld:guild');
+    (shipment.route === 'arrakis' || shipment.destination === 'homeworld:guild' &&
+      (!g.advanced || !!shipment.guildTransportEvent));
 }
 function continueHomeworldShipment(g: Game, shipment: PendingHomeworldShipment) {
   if (!openHomeworldTransportPermission(g, shipment) && !openHomeworldGuildRate(g, shipment))