Zibll 主线收口：统一 single 并清退 compat 资源路径

Co-Authored-By: Claude <noreply@anthropic.com>

assets/admin/src/schema/sections/payment/paid.js

@@ -51,7 +51,7 @@ export const paidSchema = {
         { key: 'payment_currency_symbol', label: '货币符号', type: 'input', default: '￥', help: '商品价格前缀，如 ￥、$、¥' },
         { key: 'payment_paid_show_user', label: '显示购买用户', type: 'switch', default: true },
         { key: 'payment_paid_show_paycount', label: '显示购买次数', type: 'switch', default: true },
-        { key: 'payment_paid_box_position', label: '付费框位置', type: 'radio', default: 'top', options: [{ label: '文章模块上', value: 'box_top' }, { label: '内容顶', value: 'top' }, { label: '内容底', value: 'bottom' }, { label: '模块下', value: 'box_bottom' }] },
+        { key: 'payment_paid_box_position', label: '付费框位置', type: 'radio', default: 'top', options: [{ label: '内容顶部（正文前）', value: 'top' }, { label: '内容底部（正文后）', value: 'bottom' }] },
       ],
     },
     {