feat(ops): v4.0.2 活动图模板、合伙人选择持久化与用户管理主图

HQ 上传底图与码栏；合伙人单选写入 partner_account.activity_poster_id，用户管理下次登录仍显示同一张图。

Co-authored-by: Cursor <cursoragent@cursor.com>

apps/admin-web/src/layouts/AdminLayout.tsx

@@ -19,6 +19,7 @@ import {
   SettingOutlined,
   AccountBookOutlined,
   ProjectOutlined,
+  PictureOutlined,
 } from '@ant-design/icons';
 import {
   hasAnySystemSettingsPermission,
@@ -118,6 +119,7 @@ const MENU_ITEMS: MenuProps['items'] = [
   },
   { key: '/invoices', icon: <FileTextOutlined />, label: '发票' },
   { key: '/promo-codes', icon: <GiftOutlined />, label: '推广码' },
+  { key: '/activity-posters', icon: <PictureOutlined />, label: '活动图' },
   { key: '/wechat-bindings', icon: <UserOutlined />, label: '微信绑定' },
   {
     key: 'wecom-group',
@@ -180,6 +182,7 @@ function menuAllowed(key: string, permissionKeys: string[]): boolean {
     '/product-detail-templates': 'products',
     '/orders': 'orders',
     '/promo-codes': 'promo_codes',
+    '/activity-posters': 'activity_posters',
     '/wecom/bots': 'wecom_bots',
     '/wecom/pushes': 'wecom_bots',
     'wecom-group': 'wecom_bots',