DEV: Show login-required splash in root route (take 2) (#32629)

app/controllers/home_page_controller.rb

@@ -0,0 +1,13 @@
+# frozen_string_literal: true
+
+class HomePageController < ApplicationController
+  skip_before_action :check_xhr, only: %i[custom blank]
+
+  def custom
+    respond_to { |format| format.html { render :custom } }
+  end
+
+  def blank
+    respond_to { |format| format.html { render "default/blank" } }
+  end
+end