handleFrame method 
    
    
    
  Implementation
  Future<void> handleFrame(YamuxFrame frame) async {
  final handleStartTime = DateTime.now();
  if (_state == YamuxStreamState.closed || _state == YamuxStreamState.reset) {
    _log.warning('$_logPrefix 🔧 [YAMUX-STREAM-HANDLE-FRAME-SKIP] Stream closed/reset, ignoring frame type ${frame.type}');
    return;
  }
  // For DATA frames, use optimized queuing to handle rapid delivery
  if (frame.type == YamuxFrameType.dataFrame) {
    return await _handleDataFrameOptimized(frame);
  }
  // Handle other frame types directly (they're less frequent)
  try {
    switch (frame.type) {
      case YamuxFrameType.windowUpdate:
        await _handleWindowUpdateFrame(frame);
        break;
      case YamuxFrameType.ping:
        await _handlePingFrame(frame);
        break;
      case YamuxFrameType.reset:
        _log.fine('$_logPrefix Received RESET frame. Session is terminating.');
        _state = YamuxStreamState.reset; // Treat as reset
        await _cleanup();
        break;
      default:
        _log.severe('$_logPrefix Received unexpected frame type: ${frame.type}. Resetting stream.');
        await reset();
        throw StateError('Unexpected frame type: ${frame.type}');
    }
  } catch (e) {
    _log.severe('$_logPrefix Error in handleFrame(): $e. Current state: $_state');
    if (_state != YamuxStreamState.closed && _state != YamuxStreamState.reset) {
      _log.warning('$_logPrefix Resetting stream due to error in handleFrame.');
      await reset();
    }
    rethrow;
  }
}