Pinned chat message + brand wordmark assets. Chat can pin one message to a banner above the feed: ChatMessage.IsPinned, MainViewModel.PinnedChatMessage + Pin/ClearPinnedChatMessageCommand (Helpers/RelayCommandGeneric.cs), LeftPanel pinned-message border bound via NotNullToVis with the feed nudged down.

Controls/LeftPanel.xaml

@@ -596,8 +596,18 @@
                                    HorizontalAlignment="Center" TextAlignment="Center" MaxWidth="240"/>
                     </StackPanel>
 
+                    <!-- Pinned message -->
+                    <Border Grid.Row="1" VerticalAlignment="Top" Margin="4,4,4,0" Padding="6,4" CornerRadius="4"
+                            Background="#1a2a3a" BorderBrush="#38bdf8" BorderThickness="1"
+                            Visibility="{Binding PinnedChatMessage, Converter={StaticResource NotNullToVis}}">
+                        <StackPanel>
+                            <TextBlock Text="{Binding PinnedChatMessage.AuthorName}" Foreground="#38bdf8" FontWeight="SemiBold" FontSize="11"/>
+                            <TextBlock Text="{Binding PinnedChatMessage.Message}" Foreground="#e0e0e0" FontSize="11" TextWrapping="Wrap"/>
+                        </StackPanel>
+                    </Border>
+
                     <!-- Message feed (shown when live) -->
-                    <ListBox Grid.Row="1" Background="Transparent" BorderThickness="0"
+                    <ListBox Grid.Row="1" Background="Transparent" BorderThickness="0" Margin="0,40,0,0"
                              ItemsSource="{Binding ChatMessages}"
                              ItemContainerStyle="{StaticResource YtListBoxItem}"
                              Visibility="{Binding ShowChatInactiveMessage, Converter={StaticResource InverseBoolToVis}}"

Helpers/RelayCommandGeneric.cs

@@ -0,0 +1,34 @@
+using System;
+using System.Windows.Input;
+
+namespace ytLive.Helpers;
+
+public class RelayCommand<T> : ICommand
+{
+    private readonly Action<T?> _execute;
+    private readonly Predicate<T?>? _canExecute;
+
+    public RelayCommand(Action<T?> execute, Predicate<T?>? canExecute = null)
+    {
+        _execute = execute;
+        _canExecute = canExecute;
+    }
+
+    public event EventHandler? CanExecuteChanged
+    {
+        add => CommandManager.RequerySuggested += value;
+        remove => CommandManager.RequerySuggested -= value;
+    }
+
+    public bool CanExecute(object? parameter)
+    {
+        if (parameter is T t) return _canExecute?.Invoke(t) ?? true;
+        return _canExecute?.Invoke(default) ?? true;
+    }
+
+    public void Execute(object? parameter)
+    {
+        if (parameter is T t) _execute(t);
+        else _execute(default);
+    }
+}

Models/YouTube.cs

@@ -70,4 +70,5 @@ public class ChatMessage
     /// subscriber events locally (YouTube's insert API only supports text), so the
     /// buffer can label them honestly — simulated events never reach YouTube.</summary>
     public bool IsSimulated { get; set; }
+    public bool IsPinned { get; set; }
 }

ViewModels/MainViewModel.Chat.cs

@@ -22,6 +22,16 @@ public partial class MainViewModel : ViewModelBase
     /// left panel can subscribe to its changes.</summary>
     public ObservableCollection<ChatMessage> ChatMessages => _chatLayer.Messages;
 
+    private ChatMessage? _pinnedChatMessage;
+    public ChatMessage? PinnedChatMessage
+    {
+        get => _pinnedChatMessage;
+        set => SetProperty(ref _pinnedChatMessage, value);
+    }
+
+    public RelayCommand<ChatMessage> PinChatMessageCommand => new((m) => { PinnedChatMessage = m; });
+    public RelayCommand ClearPinnedChatMessageCommand => new(_ => { PinnedChatMessage = null; });
+
     /// <summary>The Add → YouTube Chat menu item: enabled only while no chat layer exists
     /// anywhere — one chat overlay per layout.</summary>
     public bool CanAddYouTubeChat