# Knative Runtime Contract

The rail owns:

- authenticated-entry integration points
- request activation and bounded buffering
- scale-to-zero and optional temporary minimum scale
- revisions, concurrency, autoscaling, and traffic splitting
- cold-start readiness and revision rollback

It inherits workload identity, criticality, dependencies, health, evidence,
promotion vocabulary, and recovery requirements from `rail-kubernetes` 1.0.0.

Production values for timeouts, concurrency, and scaling are workload bindings
backed by measured evidence; the rail must not invent one universal value.