TUI: переработать shell и адаптацию layout

LazyBear.MCP/TUI/Components/SettingsTab.razor

@@ -1,6 +1,5 @@
 <Rows>
     <Markup Content="@Loc.SettingsTitle" Foreground="@UiPalette.Text" Decoration="@Spectre.Console.Decoration.Bold" />
-    <Markup Content="@Loc.SettingsHint" Foreground="@UiPalette.TextMuted" />
     <Markup Content=" " />
 
     @if (Entries.Count == 0)
@@ -67,7 +66,7 @@
             text = $"{indent}{checkbox} {entry.Label}{disabledSuffix}";
         }
 
-        return Fit(text, Math.Max(Console.WindowWidth - 12, 32));
+        return Fit(text, Math.Max(UiMetrics.ConsoleWidth - 12, 32));
     }
 
     private static string Fit(string text, int width)