Attach a refs/notes/byre note to each squash merge and push it

internal/store/store.go

@@ -866,6 +866,40 @@ func (s *Store) TaskEventsTail(ctx context.Context, taskID string, limit int) ([
 	return scanEvents(rows)
 }
 
+type Handoff struct {
+	SessionID string
+	At        time.Time
+	Text      string
+}
+
+func (s *Store) TaskHandoffs(ctx context.Context, taskID string) ([]Handoff, error) {
+	rows, err := s.db.QueryContext(ctx, `
+		SELECT agent_session_id, created_at, coalesce(json_extract(payload, '$.result'), '') FROM events
+		WHERE task_id = ? AND kind = 'turn.ended' AND json_extract(payload, '$.handoff') = 1
+		ORDER BY seq
+	`, taskID)
+	if err != nil {
+		return nil, err
+	}
+	defer rows.Close()
+
+	handoffs := []Handoff{}
+	for rows.Next() {
+		h := Handoff{}
+		at := ""
+		err = rows.Scan(&h.SessionID, &at, &h.Text)
+		if err != nil {
+			return nil, err
+		}
+		h.At, err = parseTime(at)
+		if err != nil {
+			return nil, err
+		}
+		handoffs = append(handoffs, h)
+	}
+	return handoffs, rows.Err()
+}
+
 func (s *Store) LeadEvents(ctx context.Context, owner string, after int64, limit int) ([]api.Event, error) {
 	rows, err := s.db.QueryContext(ctx, `
 		SELECT `+eventColumns+`