Status enums

errand_create / errand_get_order / errand_list_orders and status callbacks all share the same status enums.

Order status (status)

Value	Meaning
`pending_payment`	Pending payment (no rider is dispatched before payment).
`dispatching`	Payment complete, dispatching a rider.
`pending`	Submitted to the delivery provider, awaiting acceptance.
`waiting_rider`	Waiting for a rider to be assigned.
`rider_reassigning`	Rider being reassigned.
`rider_accepted`	A rider has accepted the order.
`rider_arrived`	The rider has arrived at the pickup point.
`delivering`	Delivering.
`completed`	Completed (final state).
`cancelled`	Cancelled (final state).
`failed`	Delivery failed (final state; the amount paid is refunded in full).
`dispatch_failed`	Rider dispatch failed (final state; the amount paid is refunded in full).

Value	Meaning
`unpaid`	Not paid.
`paid`	Paid.
`refunded`	Refunded (returned via the original payment method).
`pending_refund`	Refund in progress (the platform retries automatically; no action needed).
`expired`	Expired after payment timed out.