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

scripts/region-keys.test.ts

@@ -33,13 +33,13 @@ describe('region-keys.json', () => {
   const keys = Object.values(manifest);
   const featureIds = (geo.features ?? []).map((f) => String(f.id));
 
-  it('has exactly 1,796 entries (one per region)', () => {
-    expect(Object.keys(manifest)).toHaveLength(1796);
+  it('has exactly 1,798 entries (one per region)', () => {
+    expect(Object.keys(manifest)).toHaveLength(1798);
   });
 
-  it('has 1,796 unique keys (no collisions)', () => {
+  it('has 1,798 unique keys (no collisions)', () => {
     expect(new Set(keys).size).toBe(keys.length);
-    expect(new Set(keys).size).toBe(1796);
+    expect(new Set(keys).size).toBe(1798);
   });
 
   it('keys each end in -[a-z]{4} and contain at least one hyphen', () => {
@@ -50,11 +50,21 @@ describe('region-keys.json', () => {
     }
   });
 
+  it("keeps RU-ARK's key stable across the #31 split and mints the two island keys", () => {
+    // v0.25 (#31) split RU-ARK into main + RU-ARK-NE + RU-ARK-SZ. The MAIN
+    // feature keeps its id (and therefore its key — FNV-1a of the id), which
+    // is what keeps existing Nation.territory / SQLite ownership valid; the
+    // two new features get fresh keys derived the same way from their ids.
+    expect(manifest['RU-ARK']).toBe('arkhangel-sk-lhbk'); // unchanged since v0.19
+    expect(manifest['RU-ARK-NE']).toBe('new-earth-eikt');
+    expect(manifest['RU-ARK-SZ']).toBe('severnaya-zemlya-awqp');
+  });
+
   it('is a stable join: its keys are exactly the regions.geo.json feature ids', () => {
     // The manifest is looked up by feature id, so its key set must line up
     // 1:1 with the geo file (catches drift if the geo is regenerated without
     // rebuilding the keys).
-    expect(featureIds).toHaveLength(1796);
+    expect(featureIds).toHaveLength(1798);
     const manifestIds = Object.keys(manifest);
     expect(new Set(manifestIds)).toEqual(new Set(featureIds));
   });