Module runtime 

Runtime / transport / provider taxonomy and per-runtime configuration.

Doc references: §3.1 (backend taxonomy), §5.4 (TransportKind / ProviderKind enums), §10.5 (feature flags).

Structs

CircuitBreakerConfig

Circuit-breaker config (doc §3.5, §12.2). One per (provider, endpoint); opens after sustained failures, half-opens after the configured duration to permit a probe.

Enums

JitterKind

ProviderKind

RuntimeConfig

Per-deployment runtime configuration. The runtime discriminator drives both the backend selection and the shape of the inner config blob. Per-runtime crates each contribute one variant or expose their own RuntimeConfig-shaped struct that can be wrapped in Custom.

RuntimeKind

Identifies the runtime backend that hosts a model.

TransportKind

Where the runtime executes — local GPU vs remote network. Read by PlacementActor and the worker-spawning logic to decide what kind of WorkerActor to spin up. Doc §5.4.