Status: IN
Notification delivery is a concrete instantiation of forward-only failure handling: double rate checks bound over-delivery, exponential backoff spaces retries, and escalation to permanent failure ensures the delivery pipeline terminates in finite time — the forward-only principle applied to the entire attempt-retry-escalate lifecycle.
Notification's bounded retry lifecycle is structurally isomorphic to forward-only failure handling
Depends on (SL): notification-delivery-is-bounded, forward-only-extends-to-failure-handling