Delivery values

Import these values from @runlane/contracts. Provider code should branch on enums, not copied strings.

Transport profiles

Enum	Value	Meaning
`TransportDurability.BestEffort`	`best_effort`	A positive publish result does not promise durable retention
`TransportDurability.Durable`	`durable`	A positive result crossed the provider's durable boundary
`TransportOrdering.None`	`none`	No cross-message order is promised
`TransportOrdering.Partition`	`partition`	Accepted messages preserve order for one effective partition

Transport limit fields are:

maxMessageBytes for one logical message.
maxPublishMessages for one publish call.

Publish outcomes

Enum	Value	Meaning
`PublishOutcomeType.Published`	`published`	The provider acknowledged one input message
`PublishOutcomeType.Failed`	`failed`	The provider returned a reliable failure for one input

A request failure without trustworthy item results rejects the call instead of inventing per-item outcomes.

Ordering applies only to messages with published outcomes. A failed item was not accepted into broker order; retrying it is a later publish, so it may follow messages that came after it in the original input.

Delivery dispositions

Enum	Value	Provider action
`DeliveryDispositionType.Handled`	`handled`	Acknowledge, delete, or commit the native message
`DeliveryDispositionType.Retry`	`retry`	Preserve it for another delivery
`DeliveryDispositionType.Reject`	`reject`	Apply configured terminal handling

Canonical envelope

The current delivery envelope:

has type: "run_wakeup".
has version: 1.
contains no user task payload.
is limited by contractDefaults.delivery.maxEnvelopeBytes to 65,536 UTF-8 bytes.

Treat it as opaque canonical bytes inside a transport provider.

Worker polling defaults

Storage-polling workers use:

Default	Value
`contractDefaults.delivery.storagePollingEmptyPollDelay`	`100ms`
`contractDefaults.delivery.storagePollingMaximumEmptyPollDelay`	`5s`

Wait-token and maintenance defaults

Omitting a wait-token idempotency TTL keeps the owner until the terminal token is pruned.

Both maintenance token limits default to 100:

contractDefaults.maintenance.waitTokenTimeoutLimit.
contractDefaults.maintenance.waitTokenResumeLimit.

Token completion also attempts one linked-run resume for lower latency. Maintenance remains the recovery owner for all links left behind.

See build a transport provider and run maintenance for behavior behind these values.