fix: reworking some code smell issues

lib/bds/desktop/shell_live/native_menu_events.ex

@@ -0,0 +1,52 @@
+defmodule BDS.Desktop.ShellLive.NativeMenuEvents do
+  @moduledoc """
+  Native- and titlebar-menu LiveView events extracted from `BDS.Desktop.ShellLive`.
+
+  `ShellLive` routes the events listed in `events/0` here via a single delegating
+  `handle_event/3`, passing its `handle_native_menu_action/2` callback so the
+  menu-action dispatch logic stays owned by `ShellLive`.
+  """
+
+  alias BDS.Desktop.ShellLive.TitlebarMenu
+
+  @events ~w(
+    native_menu_action
+    titlebar_menu_keydown
+    toggle_titlebar_menu
+    hover_titlebar_menu
+    close_titlebar_menu
+    titlebar_menu_action
+  )
+
+  @doc "Event names handled by this module."
+  @spec events() :: [String.t()]
+  def events, do: @events
+
+  @typep socket :: Phoenix.LiveView.Socket.t()
+  @typep native_action :: (socket(), String.t() -> socket())
+
+  @spec handle(String.t(), map(), socket(), native_action()) :: {:noreply, socket()}
+  def handle("native_menu_action", %{"action" => action}, socket, native_action) do
+    {:noreply, native_action.(socket, action)}
+  end
+
+  def handle("titlebar_menu_keydown", %{"key" => key}, socket, native_action) do
+    {:noreply, TitlebarMenu.handle_keydown(socket, key, native_action)}
+  end
+
+  def handle("toggle_titlebar_menu", %{"group" => group}, socket, _native_action) do
+    {:noreply, TitlebarMenu.toggle(socket, group)}
+  end
+
+  def handle("hover_titlebar_menu", %{"group" => group}, socket, _native_action) do
+    {:noreply, TitlebarMenu.hover(socket, group)}
+  end
+
+  def handle("close_titlebar_menu", _params, socket, _native_action) do
+    {:noreply, TitlebarMenu.close(socket)}
+  end
+
+  def handle("titlebar_menu_action", %{"action" => action}, socket, native_action) do
+    {:noreply, socket |> TitlebarMenu.close() |> native_action.(action)}
+  end
+end