Makes the state hub an event publisher so activity-core can drive
maintenance automation declaratively via ActivityDefinitions, rather
than the hub creating tasks itself.
- api/events/: lazy JetStream publisher + EventEnvelope mirroring
activity-core's contract; no-op when NATS_URL unset, fire-and-forget
with logged failures so publishing never breaks an API request.
- Wired publishers on the five v1.0 lifecycle events:
org.statehub.repo.registered (POST /repos/)
org.statehub.workstream.completed (PATCH /workstreams/* on transition)
org.statehub.decision.resolved (POST /decisions/*/resolve)
org.statehub.domain.goal.activated (POST /domain-goals/*/activate)
org.statehub.task.stale (scripts/cleanup_stale_tasks.py)
- docs/nats-event-subjects.md: subject naming convention + catalog.
- docs/cron-migration.md: design stub for replacing custodian-sync
systemd timer and cleanup-stale cron with ActivityDefinitions
(depends on activity-core WP-0003).
- docs/activity-core-delegation.md: protocol, invariants, cutover plan.
- SCOPE.md: declares activity-core as downstream event consumer and
restates that the state hub stays a read model, not a task factory.
Workplan: workplans/CUST-WP-0040-state-hub-nats-activity-core-integration.md
242 tests pass.
Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>
