Avoid hassfest manifest collision

test/golden-policy.test.mjs

@@ -1,6 +1,15 @@
 import assert from 'node:assert/strict';
 import test from 'node:test';
-import { assertGoldenInvocation, goldenRunFailed } from '../demo/golden/policy.mjs';
+import {
+  assertGoldenInvocation,
+  GOLDEN_BASELINE_MANIFEST,
+  goldenRunFailed,
+} from '../demo/golden/policy.mjs';
+
+test('golden metadata cannot be mistaken for a Home Assistant integration manifest', () => {
+  assert.equal(GOLDEN_BASELINE_MANIFEST, 'baseline-manifest.json');
+  assert.notEqual(GOLDEN_BASELINE_MANIFEST, 'manifest.json');
+});
 
 test('golden capture fails on runtime errors but permits missing baselines', () => {
   assert.equal(goldenRunFailed('capture', false, [{ status: 'error' }]), true);