fix(reenrich): preserve release identity in batch actions

test/re_enrich_release_policy_test.dart

@@ -0,0 +1,18 @@
+import 'package:flutter_test/flutter_test.dart';
+import 'package:spotiflac_android/utils/re_enrich_release_policy.dart';
+
+void main() {
+  test(
+    'only deliberate single-file re-enrich can replace release identity',
+    () {
+      expect(
+        allowsReleaseIdentityReplacement(ReEnrichOperationScope.singleFile),
+        isTrue,
+      );
+      expect(
+        allowsReleaseIdentityReplacement(ReEnrichOperationScope.batch),
+        isFalse,
+      );
+    },
+  );
+}