sendInstantUIUpdate method

Implementation

void sendInstantUIUpdate(List<Map<String, dynamic>> changes) {
  if (_clients.isEmpty) {
    print('⚠️  No instant UI update clients connected');
    return;
  }

  final updateMessage = jsonEncode({
    'type': 'instant_update',
    'timestamp': DateTime.now().millisecondsSinceEpoch,
    'changes': changes,
  });

  _clients.removeWhere((client) {
    try {
      client.add(updateMessage);
      return false;
    } catch (e) {
      print('❌ Failed to send instant UI update to client: $e');
      return true;
    }
  });

  print('⚡ Instant UI update sent to ${_clients.length} browsers');
}