- alerts_notification (user notifications), alerts_notification_recipient
(one row per user, read/dismissed) and alerts_notification_preference
(per-category mute and email settings), with entities, changelog and
test DDL.
- The delivery log becomes alerts_delivery and alerts_inbox_item is
retired (guarded changesets 16-17); in-app alert delivery writes ALERT
notifications and recipient rows.
- Audiences resolved at send time (all users, roles, permission, users)
through a pluggable user directory; record actions Preview audience,
Send now, Schedule and Retract; scheduled sends and retention purge in
the delivery job.
- Bell API: summary with banners, a paged page endpoint with filters,
read, unread and dismiss; alerts_recipient security key and
alerts.notification.admin.
- NotificationSignal / NotificationAudience in the SPI stand-in, and the
sink's notify.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>