2026-09-06-durable-work-exits

Typed Durable Work exits

• ForgeTrust.AppSurface.Durable now lets ProviderKeyed Work opt into a closed executor result: success, a proven pre-effect retry, terminal application failure, or an explicitly ambiguous external outcome. Existing IDurableWorkerExecutor<TWork, TResult> registrations remain unchanged; the PostgreSQL provider keeps effect permits, retry timing, cancellation, and fencing authoritative rather than exposing a direct state mutation or retry hook.
• Register the exit-aware contract as a new immutable Work version only after every worker that can discover it runs exit-capable Provider/PostgreSQL binaries. Follow the package guide's fleet-complete rollout and rollback boundary; a legacy provider fails conservatively instead of treating a non-success exit as a successful completion.