Start a new task from a closed task

internal/store/store.go

@@ -958,8 +958,8 @@ func (s *Store) TranscriptEvents(ctx context.Context, taskID string, after int64
 		cut := int64(0)
 		err = s.db.QueryRowContext(ctx, `
 			SELECT coalesce(max(seq), 0) FROM events
-			WHERE task_id = ? AND kind = 'snapshot.created' AND json_extract(payload, '$.n') = ?
-		`, from, at).Scan(&cut)
+			WHERE task_id = ? AND (? = 0 OR kind = 'snapshot.created' AND json_extract(payload, '$.n') = ?)
+		`, from, at, at).Scan(&cut)
 		if err != nil {
 			return nil, err
 		}
@@ -1750,6 +1750,8 @@ func scanTask(row scanner) (api.Task, error) {
 	}
 	if forkedFrom != "" {
 		t.ForkedFrom = &forkedFrom
+	}
+	if forkedAt != 0 {
 		t.ForkedAt = &forkedAt
 	}
 	if mergeQueuedAt != "" {