close method

@override Future<void> close()

Close closes the resource manager

Implementation

@override
Future<void> close() async {
  _logger.fine('Closing ResourceManager...');
  _gcTimer?.cancel();
  // TODO: Clean up all scopes properly.
  // For now, just mark system and transient as done.
  // This doesn't release resources from children correctly, needs full teardown.
  _transientScope.done();
  _systemScope.done();
  _logger.fine('ResourceManager closed.');
}