Implement Homeworld mechanics through Caladan reinforcement checkpoint

Connect typed Homeworld custody, transport, battle, income, revival and Caladan reinforcement flows with private multiplayer recovery and controls. Preserve the optimized test workflow and keep unfinished rules modes gated. Verified with 3682 offline tests, typecheck, lint, production build and 40 HTTP tests; existing saved games remain unchanged.

game/guild-ambassador.ts

@@ -9,6 +9,7 @@ import {
 } from './board';
 import { presenceAt } from './force-presence';
 import { territoryEntryBlock } from './occupancy';
+import { homeworldSpiritualAdvisorQuote } from './homeworld-mobility';
 
 export class GuildAmbassadorShipmentError extends Error {
   constructor(message: string) {
@@ -251,7 +252,7 @@ export type GuildAmbassadorAdvisor = {
   player: string;
   territory: string;
   sector: number;
-  amount: 1;
+  amount: 1 | 2;
   elite: 0;
   advisors: boolean;
 };
@@ -306,15 +307,26 @@ export function quoteGuildAmbassadorAdvisor(
       ? shipment.sector
       : (action.sector as number)
     : 0;
+  const allowance = homeworldSpiritualAdvisorQuote(g, bg.id, to);
+  requireShipment(
+    !allowance.blocked,
+    allowance.blocked ?? 'Accompaniment is unavailable.',
+  );
+  const amount = action.amount === undefined ? 1 : action.amount;
+  requireShipment(
+    (amount === 1 || amount === 2) &&
+      amount <= allowance.maximum &&
+      amount <= bg.reserves - (bg.elites?.reserves ?? 0),
+    'Choose an available spiritual-advisor amount; two requires high-population Wallach IX and Polar Sink.',
+  );
   requireShipment(
     (action.territory === undefined || action.territory === to) &&
-      (action.amount === undefined || action.amount === 1) &&
       (action.elite === undefined || action.elite === 0) &&
       action.noField === undefined &&
       action.alliedNoField === undefined &&
       usableLocation(g, location(to, sector)) &&
       (sector === 0 || sector !== g.storm),
-    'This accompaniment grants one ordinary force only to the shipment territory or Polar Sink, outside storm.',
+    'Accompaniment sends ordinary forces only to the shipment territory or Polar Sink, outside storm.',
   );
   // E1 p.10 FAQ explicitly allows BG to accompany Ixians into the HMS. This
   // grants no independent BG direct shipment or relocation of the stronghold.
@@ -325,15 +337,15 @@ export function quoteGuildAmbassadorAdvisor(
   const advisors = arrivalAsAdvisor(g, bg, to, undefined, accompanying);
   validateDestinationOccupancy(g, bg, to, advisors);
   requireShipment(
-    count((bg.forces[location(to, sector)] ?? 0) + 1) &&
-      count(presenceAt(bg, to) + 1),
+    count((bg.forces[location(to, sector)] ?? 0) + amount) &&
+      count(presenceAt(bg, to) + amount),
     'The resulting Bene Gesserit force quantity is invalid.',
   );
   return {
     player: bg.id,
     territory: to,
     sector,
-    amount: 1,
+    amount,
     elite: 0,
     advisors,
   };