When incident tasks are automatically created (from failed test cases) and assigned to users, assignees do not receive email notifications. Manual task creation works correctly.

Root Cause:

• Auto-created tasks use FeedRepository.create(thread) internally without generating a ChangeEvent.
• Email notifications rely on persisted ChangeEvent entries, which are missing in this flow.
• Similarly, when updating an existing task during Ack → Assigned transitions (patchTaskAssignee()), no ChangeEvent is created because the code path is internal and bypasses the REST response interceptor (ChangeEventHandler).

Impact:

• Assignees of auto-created tasks do not receive email notifications.
• Audit trail is incomplete for automated task creation and assignment changes.

Proposed Fix:

1. Create a helper method createAndPersistThreadChangeEvent(Thread thread, String userName, EventType eventType) to explicitly generate and store THREAD_CREATED or THREAD_UPDATED events.
2. Update createTask() to call this helper after creating a task.
3. Update patchTaskAssignee() to call this helper after updating task assignees.
4. Ensure REST endpoints continue using ChangeEventHandler to avoid duplicates.

Expected Outcome:

• Email notifications sent for all automated task creations and assignment updates.
• Audit trail complete for all incident task operations.
• WebSocket notifications remain functional.
• No duplicate ChangeEvents are generated.