fix(chat): the talk-focus button names the focus, not the target

581a61ef made the chat button display the tell TARGET's name once "Tell to X"
was picked. It should read "Tell" — the button names the focus, the same way
it reads "Chat", "General" or "Fellow" for the other focuses. Reported against
retail.

Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>

src/AcDream.App/UI/Layout/ChatWindowController.cs

@@ -173,6 +173,7 @@ public sealed class ChatWindowController : IRetainedWindowStateController, IReta
     private static string ChannelButtonLabel(ChatChannelKind k) => k switch
     {
         ChatChannelKind.Say        => "Chat",
+        ChatChannelKind.Tell       => "Tell",
         ChatChannelKind.General    => "General",
         ChatChannelKind.Trade      => "Trade",
         ChatChannelKind.Lfg        => "LFG",
@@ -428,10 +429,9 @@ public sealed class ChatWindowController : IRetainedWindowStateController, IReta
                 TalkFocusSpecial => SelectedName() is not null,
                 _ => true,
             };
-            menu.ButtonLabelProvider = () =>
-                c._activeChannel == ChatChannelKind.Tell && c._tellTarget is { } t
-                    ? t
-                    : ChannelButtonLabel(c._activeChannel);
+            // The button names the FOCUS, not the target: retail shows "Tell",
+            // not the person's name.
+            menu.ButtonLabelProvider = () => ChannelButtonLabel(c._activeChannel);
             menu.OnOpen = RebuildItems;
             menu.OnSelect = p =>
             {