fix(extensions): resume metadata after verification

test/extension_auth_launcher_test.dart

@@ -24,6 +24,51 @@ void main() {
     );
   });
 
+  test(
+    'retries an extension operation after successful verification',
+    () async {
+      var operationCalls = 0;
+      var verificationCalls = 0;
+
+      final result = await runExtensionOperationWithVerificationRetry(
+        extensionId: 'qobuz-web',
+        browserMode: 'in_app_first',
+        operation: () async {
+          operationCalls++;
+          if (operationCalls == 1) throw Exception('VERIFY_REQUIRED');
+          return 'artist metadata';
+        },
+        verify: () async {
+          verificationCalls++;
+          return true;
+        },
+      );
+
+      expect(result, 'artist metadata');
+      expect(operationCalls, 2);
+      expect(verificationCalls, 1);
+    },
+  );
+
+  test('does not retry when extension verification is not completed', () async {
+    var operationCalls = 0;
+
+    await expectLater(
+      runExtensionOperationWithVerificationRetry(
+        extensionId: 'qobuz-web',
+        browserMode: 'in_app_first',
+        operation: () async {
+          operationCalls++;
+          throw Exception('VERIFY_REQUIRED');
+        },
+        verify: () async => false,
+      ),
+      throwsA(isA<Exception>()),
+    );
+
+    expect(operationCalls, 1);
+  });
+
   test('verification wait can be cancelled before foreground resume', () async {
     final foreground = Completer<void>();
     final cancellation = Completer<void>();