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.

tests/ecaz-duke-bots.test.ts

@@ -92,10 +92,15 @@ function action(g: Game, level: (typeof DIFFICULTIES)[number]) {
 }
 
 for (const level of DIFFICULTIES)
-  void test(`${level} explicitly acquires for Ecaz through real entry in Basic/Advanced, with or without an existing ally`, () => {
+  void test(`${level} acquires for Ecaz in Basic/Advanced when an existing alliance rules out a new offer`, () => {
     for (const advanced of [false, true])
       for (const allied of [false, true]) {
-        const g = enter(fixture(advanced, allied));
+        const initial = fixture(advanced, allied);
+        if (!allied) {
+          initial.players[1].ally = 'al';
+          initial.players[2].ally = 'in';
+        }
+        const g = enter(initial);
         assert.deepEqual(viewGame(g, 'ec').ambassadorEntry!.dukeAcquisition, {
           blocked: null,
         });
@@ -165,9 +170,11 @@ const unavailable: [string, (g: Game) => void][] = [
   ],
 ];
 for (const [name, change] of unavailable)
-  void test(`all four profiles leave the token in place when ${name}`, () => {
+  void test(`all four profiles leave the token in place when already allied and ${name}`, () => {
     const state = fixture();
     change(state);
+    state.players[0].ally = 'al';
+    state.players[2].ally = 'ec';
     const g = enter(state);
     assert.ok(viewGame(g, 'ec').ambassadorEntry!.dukeAcquisition!.blocked);
     for (const level of DIFFICULTIES) {
@@ -193,7 +200,7 @@ void test('only the actual owner gets the choice, and bots cannot acquire from a
     }
 });
 void test('all profiles rely on the server descriptor, with safe decline for a missing descriptor', () => {
-  const g = enter(fixture());
+  const g = enter(fixture(false, true));
   for (const level of DIFFICULTIES) {
     const view = botView(g, level);
     Object.defineProperty(view, 'dukeVidal', {
@@ -209,7 +216,7 @@ void test('all profiles rely on the server descriptor, with safe decline for a m
   }
 });
 void test('private opponent hands, resources and traitors do not change acquisition choices or become projected evidence', () => {
-  const g = enter(fixture());
+  const g = enter(fixture(false, true));
   const changed = structuredClone(g);
   changed.players[1].hand.push(changed.deck.shift()!);
   changed.players[1].spice = 1;