feat(payment): finish Zibll key contract and wire checkout gateways

Drop dual-read payment runtime fallbacks, align PHP schema to Vue keys,
read gateway credentials only from aksrt_settings with enable toggles,
expose configured adapters at checkout, fix credits pay signatures, and
apply order expiry settings. Wire orphan order/card-pass/withdrawal
schema pages; delete unused Payment* wrappers.

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

@@ -21,7 +21,6 @@ export const affiliateSchema = {
     pay_rebate_text_details_title: '',
     pay_rebate_text_details: '',
     pay_rebate_text_discount: '',
-    payment_affiliate_note: '返佣链路复用邀请体系，订单归因和结算自动衔接当前策略字段。',
   },
   groups: [
     {