feat(payment): 支付&付费菜单按参考主题重构并新增提现策略页

- 子菜单重组为知识付费/余额充值/VIP会员/创作分成/推广返佣/收款接口/提现策略
- 收款接口页 1:1 复刻 Zibll 双下拉结构，仅保留支付宝/微信/PayPal/Stripe/易支付
- 订单前缀/流水号前缀/提现单号前缀配置保留并移入收款接口页
- 知识付费/推广返佣按参考主题全字段复刻，余额充值并入充值卡配置
- 新增 tabbed/between_number/page_select 表单控件及后端 pages 搜索源
- 清理旧 SPA 组件、无消费者 REST 端点与废弃配置键（不写双路兼容）
- 更新存量契约测试至新 schema 文件

assets/admin/src/api/modules/index.js

@@ -2,7 +2,6 @@ import { globalApiMethods } from './global.js'
 import { pageDisplayApiMethods } from './page-display.js'
 import { permissionsApiMethods } from './permissions.js'
 import { usersApiMethods } from './users.js'
-import { paymentApiMethods } from './payment.js'
 import { extensionsApiMethods } from './extensions.js'
 import { toolsApiMethods } from './tools.js'
 import { schemaApiMethods } from './schema.js'
@@ -13,7 +12,6 @@ export const apiMethods = {
   ...pageDisplayApiMethods,
   ...permissionsApiMethods,
   ...usersApiMethods,
-  ...paymentApiMethods,
   ...extensionsApiMethods,
   ...toolsApiMethods,
   ...schemaApiMethods,

assets/admin/src/api/modules/payment.js

@@ -1,7 +0,0 @@
-export const paymentApiMethods = {
-  /* ================================================================
-   * 支付&付费 (Payment)
-   * ================================================================ */
-
-  getPaymentOverview() { return this.request('/payment/overview') },
-}