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Fusion 96a9da7979 FN-8505: notify operators of terminal task wedges

Deliver durable, actionable notifications when terminal task recovery wedges.

- Persist and deduplicate terminal wedge notification episodes across task updates and service restarts.
- Classify terminal failure and self-healing escalation states, then deliver actionable ntfy and mailbox alerts.
- Align PostgreSQL baseline and upgrade migration registration for the durable wedge field.

Files changed:
 .changeset/fn-8505-task-wedge-notifications.md     |   7 +
 docs/agents.md                                     |   4 +
 docs/architecture.md                               |   4 +
 .../core/src/postgres/migrations/0000_initial.sql  |   2 +
 .../migrations/0033_fn-8505_wedge_notification.sql |   5 +
 packages/core/src/postgres/schema-applier.ts       |  29 +++-
 packages/core/src/postgres/schema/project.ts       |   1 +
 packages/core/src/store.ts                         |  22 ++-
 packages/core/src/task-store/persistence.ts        |   2 +
 packages/core/src/task-store/serialization.ts      |   1 +
 packages/core/src/task-store/task-row-mappers.ts   |   2 +-
 packages/core/src/task-store/task-update.ts        |   5 +
 packages/core/src/types.ts                         |  14 ++
 packages/core/src/types/workflow-steps.ts          |   2 +
 .../src/__tests__/notification-service.test.ts     |  20 +++
 packages/engine/src/__tests__/notifier.test.ts     |  26 +++-
 packages/engine/src/__tests__/self-healing.test.ts |   9 +-
 .../__tests__/notification-service.test.ts         |  34 ++++-
 .../__tests__/task-wedge-notification.test.ts      | 134 +++++++++++++++++
 .../src/notification/notification-service.ts       | 108 +++++++++++++-
 packages/engine/src/notification/ntfy-provider.ts  |  11 ++
 .../src/notification/task-wedge-notification.ts    | 160 +++++++++++++++++++++
 packages/engine/src/notifier.ts                    |   3 +
 packages/engine/src/self-healing.ts                |  17 +++
 24 files changed, 610 insertions(+), 12 deletions(-)

Fusion-Task-Id: FN-8505
Fusion-Task-Lineage: eee85220-18ba-475d-9d01-dc96e2b923e6
Co-authored-by: Fusion (runfusion.ai) <noreply@runfusion.ai>

2026-07-22 20:07:48 -07:00