GET /admin/payment/config — ödeme yapılandırması (b2b.payment.admin). Sealed creds dönmez.
curl -X GET "https://{slug}.b2b.blesyum.app/api/b2b/v1/admin/payment/config" \
-H "Authorization: Bearer <oturum-token>" \
-H "Accept: application/json"{
"data": "…",
"trace_id": "01JC…"
}