feat: split RU-ARK into mainland + New Earth + Severnaya Zemlya — idempotent stage, manifests 1,798 (v0.25.0, #31)

server/regions.test.ts

@@ -27,9 +27,9 @@ describe('regions (region-key loader, v0.19 #16 P1)', () => {
     expect(loadRegions(root)).toBe(true);
   });
 
-  it('loads the full manifest: 1,796 unique valid region keys', () => {
+  it('loads the full manifest: 1,798 unique valid region keys', () => {
     expect(hasRegionData()).toBe(true);
-    expect(validKeys().size).toBe(1796);
+    expect(validKeys().size).toBe(1798);
   });
 
   it('expands an ISO_A3 country to the region keys of all its sub-regions', () => {
@@ -51,6 +51,18 @@ describe('regions (region-key loader, v0.19 #16 P1)', () => {
     expect(ref['aisne-gstu']).toBe('Aisne (FRA)');
   });
 
+  it('expands RUS to all 82 sub-regions after the #31 Arkhangel split (no ownership gap at game init)', () => {
+    // #31 split RU-ARK into mainland + New Earth + Severnaya Zemlya. A fresh
+    // game's RUS territory (expanded from the preset's country list) must
+    // contain all three sub-region keys — the main one (ownership-safe,
+    // unchanged key) plus the two new island ones.
+    const rus = expandCountriesToKeys(['RUS']);
+    expect(rus).toHaveLength(82);
+    expect(rus).toContain('arkhangel-sk-lhbk');
+    expect(rus).toContain('new-earth-eikt');
+    expect(rus).toContain('severnaya-zemlya-awqp');
+  });
+
   it('referenceForKeys labels only known keys and omits unknown ones', () => {
     const ref = referenceForKeys(['ain-lqtt', 'not-a-real-key-xyz']);
     expect(ref['ain-lqtt']).toBe('Ain (FRA)');
@@ -166,13 +178,13 @@ describe('loadRegions resolves the manifest per environment (dev public/ vs prod
   it('loads from dist/ when public/ is absent (the prod container layout)', () => {
     expect(loadRegions(prodRoot)).toBe(true);
     expect(hasRegionData()).toBe(true);
-    expect(validKeys().size).toBe(1796);
+    expect(validKeys().size).toBe(1798);
     expect(expandCountriesToKeys(['FRA'])).toHaveLength(42);
   });
 
   it('still loads from public/ (the dev layout, the first candidate)', () => {
     expect(loadRegions(realRoot)).toBe(true);
-    expect(validKeys().size).toBe(1796);
+    expect(validKeys().size).toBe(1798);
   });
 
   it('a dist/ WITHOUT the adjacency manifest degrades: hasAdjacency() false, neighboursOf []', () => {