[asselstine]

Summary

• Record terminal lifecycle transitions in a durable outbox, snapshotting enabled matching subscribers in the same transaction.
• Serialize terminal transitions with trigger creation, enablement, and watched config edits so activation races have a clear boundary.
• Drain outbox events with stable ordering and existing invocation idempotency/queue admission semantics; preserve eligible pre-deploy outstanding invocations during migration.
• Document replay behavior and add PostgreSQL coverage for historical runs, activation, edits, re-enable, replacement, and future transitions.

Validation

• npm test (full root suite)
• PostgreSQL lifecycle suite: 17 tests

[linear]

GEN-2807