erio 27e2a51f31 docs: add built-in payment guide and update README ecosystem section ...

- Add docs/PAYMENT.md and docs/PAYMENT_CN.md with full payment configuration guide
- Mark Sub2ApiPay as deprecated (strikethrough) in all 3 READMEs, link to built-in payment docs
- Add built-in payment system to features list

2026-04-11 19:54:25 +08:00

..

ADMIN_PAYMENT_INTEGRATION_API.md

feat(frontend): pass locale to iframe embedded pages via lang parameter

2026-03-09 19:38:23 +08:00

PAYMENT_BACKEND_MIGRATION_PLAN.md

feat: integrate payment system (EasyPay, Alipay, WxPay, Stripe)

2026-04-05 15:06:05 +08:00

PAYMENT_CN.md

docs: add built-in payment guide and update README ecosystem section

2026-04-11 19:54:25 +08:00

PAYMENT_FRONTEND_MIGRATION_PLAN.md

feat: integrate payment system (EasyPay, Alipay, WxPay, Stripe)

2026-04-05 15:06:05 +08:00

PAYMENT_IMPLEMENTATION_ROADMAP.md

feat: integrate payment system (EasyPay, Alipay, WxPay, Stripe)

2026-04-05 15:06:05 +08:00

PAYMENT.md

docs: add built-in payment guide and update README ecosystem section

2026-04-11 19:54:25 +08:00