test(linkedin-studio): M0-3 — resolver twin-consistency test (R2)

hooks/scripts/__tests__/data-root.test.mjs

@@ -78,3 +78,43 @@ describe('data-root resolver', () => {
     });
   });
 });
+
+// Twin consistency with scripts/analytics/src/utils/storage.ts:getDataRoot.
+// The TS twin cannot be imported into this no-tsx .mjs run, so we assert this
+// .mjs resolver against the SAME contract literals that storage-root.test.ts
+// asserts for the TS twin (the behavioral-consistency model — a header-only
+// "bit-identical" claim is not a test). Change one twin → update this block and
+// its TS mirror in lockstep. R2's mitigation.
+describe('twin consistency (storage.ts:getDataRoot)', () => {
+  const saved = {
+    HOME: process.env.HOME,
+    USERPROFILE: process.env.USERPROFILE,
+    LINKEDIN_STUDIO_DATA: process.env.LINKEDIN_STUDIO_DATA,
+  };
+
+  afterEach(() => {
+    for (const [k, v] of Object.entries(saved)) {
+      if (v === undefined) delete process.env[k];
+      else process.env[k] = v;
+    }
+  });
+
+  // These literals are the shared contract — storage-root.test.ts asserts the
+  // identical strings for the TS twin; keep them character-for-character in sync.
+  test('default matches the TS twin contract literal (HOME-stubbed)', () => {
+    process.env.HOME = '/home/tester';
+    delete process.env.USERPROFILE;
+    delete process.env.LINKEDIN_STUDIO_DATA;
+
+    assert.equal(
+      getDataRoot('analytics'),
+      join('/home/tester', '.claude', 'linkedin-studio', 'analytics'),
+    );
+  });
+
+  test('LINKEDIN_STUDIO_DATA override matches the TS twin contract literal', () => {
+    process.env.LINKEDIN_STUDIO_DATA = '/tmp/lis-data';
+
+    assert.equal(getDataRoot('analytics'), join('/tmp/lis-data', 'analytics'));
+  });
+});