fix: исправить навигацию клавиатуры в TUI через GlobalKeyboardService

- Добавить GlobalKeyboardService — выделенный поток с блокирующим
  Console.ReadKey, единственный источник клавишных событий для TUI
- Убрать FocusManager из App.razor: перехватывал Tab до компонентов
- Удалить @onkeydown с <Select>: RazorConsole не пробрасывает Tab/стрелки
  через этот механизм
- Использовать FocusedValue вместо Value в Select для корректной подсветки
- Обновить CLAUDE.md и AGENTS.md: архитектура TUI, RazorConsole gotchas
- Добавить docs/tui_log.md: разбор проблемы и справочник по RazorConsole

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

LazyBear.MCP/TUI/Components/SettingsTab.razor

@@ -1,42 +1,89 @@
-@using LazyBear.MCP.Services.ToolRegistry
-@inject ToolRegistryService Registry
-
 <Rows>
-    <Markup Content=" " />
-    <Markup Content="[bold]Tool Registry — runtime enable/disable[/]" />
-    <Markup Content="[grey]Changes take effect immediately without restart[/]" />
+    <Markup Content="Tool Registry" Foreground="@UiPalette.Text" Decoration="@Spectre.Console.Decoration.Bold" />
+    <Markup Content="Up/Down select. Left/Right collapse or expand. Space toggles state." Foreground="@UiPalette.TextMuted" />
     <Markup Content=" " />
 
-    @{
-        int focusIdx = 20;
-    }
-
-    @foreach (var module in Registry.GetModules())
+    @if (Entries.Count == 0)
     {
-        var moduleEnabled = Registry.IsModuleEnabled(module.ModuleName);
-        var moduleColor = moduleEnabled ? Spectre.Console.Color.Green : Spectre.Console.Color.Red;
-        var moduleName = module.ModuleName;
-        var capturedFocus = focusIdx++;
-
-        <Panel Title="@module.ModuleName" BorderColor="@moduleColor" Expand="true">
-            <Rows>
-                <Columns>
-                    <TextButton Content="@(moduleEnabled ? "[green]■ MODULE ENABLED[/]" : "[red]□ MODULE DISABLED[/]")"
-                                OnClick="@(() => Registry.ToggleModule(moduleName))"
-                                BackgroundColor="@(moduleEnabled ? Spectre.Console.Color.DarkGreen : Spectre.Console.Color.DarkRed)"
-                                FocusedColor="@Spectre.Console.Color.Yellow"
-                                FocusOrder="@capturedFocus" />
-                    <Markup Content="@($"  {module.Description}")" Foreground="@Spectre.Console.Color.Grey" />
-                </Columns>
-                <Markup Content=" " />
-                <ToolButtonList Module="@module" StartFocusIdx="@focusIdx" />
-            </Rows>
-        </Panel>
-
-        focusIdx += module.ToolNames.Count;
-        <Markup Content=" " />
+        <Border BorderColor="@UiPalette.Frame" BoxBorder="@Spectre.Console.BoxBorder.Rounded" Padding="@(new Spectre.Console.Padding(0, 0, 0, 0))">
+            <Markup Content="No modules available." Foreground="@UiPalette.TextDim" />
+        </Border>
     }
+    else
+    {
+        <Select TItem="int"
+                Options="@GetOptions()"
+                Value="@GetNormalizedIndex()"
+                FocusedValue="@GetNormalizedIndex()"
+                Formatter="@FormatEntry"
+                Expand="true"
+                BorderStyle="@Spectre.Console.BoxBorder.Rounded"
+                SelectedIndicator="@('>')" />
+    }
+
+    <Markup Content=" " />
+    <Markup Content="@GetSelectedDescription()" Foreground="@UiPalette.TextMuted" />
 </Rows>
 
 @code {
+    [Parameter, EditorRequired] public IReadOnlyList<SettingsEntry> Entries { get; set; } = Array.Empty<SettingsEntry>();
+    [Parameter] public int SelectedIndex { get; set; }
+    [Parameter] public EventCallback<int> SelectedIndexChanged { get; set; }
+    [Parameter] public int ViewportRows { get; set; } = 5;
+
+    private int[] GetOptions() => Enumerable.Range(0, Entries.Count).ToArray();
+
+    private int GetNormalizedIndex() => Entries.Count == 0 ? 0 : Math.Clamp(SelectedIndex, 0, Entries.Count - 1);
+
+    private string GetSelectedDescription()
+    {
+        if (Entries.Count == 0)
+        {
+            return "Runtime enable/disable settings are unavailable.";
+        }
+
+        var selected = Entries[Math.Clamp(SelectedIndex, 0, Entries.Count - 1)];
+        return selected.Description;
+    }
+
+    private string FormatEntry(int index)
+    {
+        var entry = Entries[index];
+        var indent = new string(' ', entry.Depth * 4);
+        var checkbox = entry.IsChecked ? "[x]" : "[ ]";
+        var disabledSuffix = entry.Kind == SettingsEntryKind.Tool && !entry.IsModuleEnabled ? " (module off)" : string.Empty;
+
+        string text;
+        if (entry.Kind == SettingsEntryKind.Module)
+        {
+            var expander = entry.IsExpanded ? "[-]" : "[+]";
+            text = $"{expander} {checkbox} {entry.Label}";
+        }
+        else
+        {
+            text = $"{indent}{checkbox} {entry.Label}{disabledSuffix}";
+        }
+
+        return Fit(text, Math.Max(Console.WindowWidth - 12, 32));
+    }
+
+    private static string Fit(string text, int width)
+    {
+        if (width <= 0)
+        {
+            return string.Empty;
+        }
+
+        if (text.Length <= width)
+        {
+            return text.PadRight(width);
+        }
+
+        if (width <= 3)
+        {
+            return text[..width];
+        }
+
+        return text[..(width - 3)] + "...";
+    }
 }