Müşteri iptali (code-guard). held/ready → cancelled + hold serbest.
OturumYol parametresi:
booking_idİstek
curl -X POST "https://{slug}.shop.blesyum.app/api/shop/v1/storefront/slot-bookings/<booking_id>/cancel" \
-H "Authorization: Bearer <oturum-token>" \
-H "Accept: application/json"Yanıt
{
"data": "…",
"trace_id": "01JC…"
}