refactor(panel): make shortcut labels optional in TaskBar and StartMenu

Add ShowShortcutLabels property to TaskBarElement and showShortcut
parameter to StartMenuStyleHelper.FormatWindowItem, defaulting to
hidden so shortcut labels are opt-in.

Author: nickprotop

SharpConsoleUI/Controls/StartMenu/StartMenuStyleHelper.cs

@@ -49,12 +49,12 @@ public static List<string> FormatInfoStripLines(string themeName, int windowCoun
 		/// <summary>
 		/// Formats a window list item with state indicator and optional keyboard shortcut.
 		/// </summary>
-		public static string FormatWindowItem(string title, int index, bool isMinimized, bool isActive)
+		public static string FormatWindowItem(string title, int index, bool isMinimized, bool isActive, bool showShortcut = false)
 		{
 			var indicator = isMinimized
 				? ControlDefaults.StartMenuMinimizedWindowIndicator
 				: ControlDefaults.StartMenuActiveWindowIndicator;
-			var shortcut = index < 9 ? $"  Alt+{index + 1}" : "";
+			var shortcut = showShortcut && index < 9 ? $"  Alt+{index + 1}" : "";
 			var dimStart = isMinimized ? "[dim]" : "";
 			var dimEnd = isMinimized ? "[/]" : "";
 			var activeStart = isActive ? "[bold]" : "";

SharpConsoleUI/Panel/Elements/TaskBarElement.cs

@@ -41,6 +41,11 @@ public TaskBarElement(string? name = null)
     /// </summary>
     public bool MinimizedDim { get; set; } = true;
 
+    /// <summary>
+    /// Gets or sets whether to show Alt-N keyboard shortcut labels next to window titles.
+    /// </summary>
+    public bool ShowShortcutLabels { get; set; } = false;
+
     /// <inheritdoc/>
     public override int FlexGrow => 1;
 
@@ -86,18 +91,19 @@ public override void Render(CharacterBuffer buffer, int x, int y, int width, Col
 
             // Build entry markup
             string title = StringHelper.TrimWithEllipsis(w.Title, MaxTitleLength, TitleEllipsisLength);
+            string shortcutPrefix = ShowShortcutLabels ? $"[bold]Alt-{i + 1}[/] " : "";
             string markup;
             if (isActive)
             {
-                markup = $"[bold]Alt-{i + 1}[/] {title}";
+                markup = $"{shortcutPrefix}{title}";
             }
             else if (isMinimized && MinimizedDim)
             {
-                markup = $"[bold]Alt-{i + 1}[/] [dim]{title}[/]";
+                markup = $"{shortcutPrefix}[dim]{title}[/]";
             }
             else
             {
-                markup = $"[bold]Alt-{i + 1}[/] {title}";
+                markup = $"{shortcutPrefix}{title}";
             }
 
             // Add separator