docs: annotate remaining routes layouts and view boundaries

app/pages/cart/index.vue

@@ -738,6 +738,7 @@ var me = {
               Z()
             );
           }),
+          // 渲染当前购物车行与逐项报价，合计不可用时禁用结算；删除确认和订单支付各自保留独立目标。
           (n, r) => {
             let i = button,
               o = message,