feat(settings): explain that OIDC enables single sign-on

test/mv_web/live/global_settings_live_test.exs

@@ -283,4 +283,21 @@ defmodule MvWeb.GlobalSettingsLiveTest do
       end
     end
   end
+
+  describe "OIDC section explanation (§1.1)" do
+    setup %{conn: conn} do
+      user = create_test_user(%{email: "admin@example.com"})
+      conn = conn_with_oidc_user(conn, user)
+      {:ok, conn: conn}
+    end
+
+    test "OIDC section shows a Single Sign-On explanation", %{conn: conn} do
+      {:ok, view, _html} = live(conn, ~p"/settings")
+
+      assert has_element?(view, "[data-testid='oidc-sso-description']")
+
+      assert view |> element("[data-testid='oidc-sso-description']") |> render() =~
+               "Single Sign-On"
+    end
+  end
 end