feat(distribution): 收口账号同步与支付配置并优化结算

frontend/src/layouts/AdminLayout.tsx

@@ -137,6 +137,7 @@ const allNavGroups: NavGroup[] = [
     icon: <SettingOutlined />,
     children: [
       { key: '/system-configs', label: '系统配置', permission: 'system_config:view' },
+      { key: '/payment-configs', label: '支付配置', permission: 'payment_config:list' },
       { key: '/audit-logs', label: '审计日志', permission: 'audit_log:view' },
     ],
   },
@@ -168,6 +169,7 @@ const sectionMeta: Record<string, { title: string; description: string }> = {
   '/distribution/invitation': { title: '邀请返利', description: '配置分站邀请好友的返利比例。' },
   '/announcements': { title: '公告管理', description: '维护主站与分站公告。' },
   '/system-configs': { title: '系统配置', description: '维护首页、发布、订单与支付配置。' },
+  '/payment-configs': { title: '支付配置', description: '维护主站支付商户、渠道与回调参数。' },
   '/audit-logs': { title: '审计日志', description: '查看高风险操作与变更记录。' },
 }