Codex mid-turn delivery deletes input before the steer is accepted

internal/store/inbox.go

@@ -274,6 +274,18 @@ func (s *Store) MarkDelivered(ctx context.Context, responseIDs []string) error {
 	})
 }
 
+func (s *Store) MarkUndelivered(ctx context.Context, responseIDs []string) error {
+	return s.write(ctx, func(tx *sql.Tx, emit emitFunc) error {
+		for _, id := range responseIDs {
+			_, err := tx.ExecContext(ctx, `UPDATE inbox_responses SET delivered_at = NULL WHERE id = ?`, id)
+			if err != nil {
+				return err
+			}
+		}
+		return nil
+	})
+}
+
 type querier interface {
 	QueryRowContext(ctx context.Context, query string, args ...any) *sql.Row
 	QueryContext(ctx context.Context, query string, args ...any) (*sql.Rows, error)