feat: 优化商品促销页面并独立展示定时上架

- 新增平台、商家定时上架独立页面，平台列表仅供查看
- 虚拟销量支持状态筛选及右侧抽屉设置，修复编码显示问题
- 统一列表操作栏，优化商品选择器、砍价、积分及优惠券页面
- 两端新增活动优惠券入口，隐藏创建表单中的活动类型字段
- 移除限时直降、第 N 件优惠页面、路由、接口调用及缓存菜单入口

验证：26 个改动前端文件编译或语法检查通过，暂存差异格式检查通过。

seller/src/router/router.js

@@ -46,6 +46,12 @@ export const otherRouter = {
       name: "goods-operation",
       component: () => import("@/views/goods/goods-seller/goodsOperation.vue")
     },
+    {
+      path: "goods-scheduled-upper",
+      title: "定时上架",
+      name: "goods-scheduled-upper",
+      component: () => import("@/views/goods/scheduled-upper/index.vue")
+    },
     {
       path: "goods-operation-edit",
       title: "编辑商品",
@@ -196,18 +202,6 @@ export const otherRouter = {
       name: "full-discount-detail",
       component: () => import("@/views/promotion/full-discount/full-discount-add.vue")
     },
-    {
-      path: "flash-discount-add",
-      title: "限时直降",
-      name: "flash-discount-add",
-      component: () => import("@/views/promotion/flash-discount/flash-discount-add.vue")
-    },
-    {
-      path: "nth-item-discount-add",
-      title: "第N件优惠",
-      name: "nth-item-discount-add",
-      component: () => import("@/views/promotion/nth-item-discount/nth-item-discount-add.vue")
-    },
     {
       path: "export-order-deliver",
       title: "发货",