feat: persist workflow controls and settle stopped branches

internal/storage/mysql/workflow_clock.go

@@ -55,6 +55,12 @@ func (r *WorkflowRuntime) advanceClock(ctx context.Context, tx *sql.Tx, g *workf
 	if row.view.State != weave.StepActive && row.view.State != weave.StepWaiting {
 		return false, deleteWorkflowClock(ctx, tx, g, row)
 	}
+	if g.view.StopKind != nil {
+		if err := saveWorkflowAdvance(ctx, tx, g, now); err != nil {
+			return false, err
+		}
+		return false, deleteWorkflowClock(ctx, tx, g, row)
+	}
 	var activated time.Time
 	if err := tx.QueryRowContext(ctx, `SELECT created_at FROM weave_activations WHERE namespace_id=? AND id=? AND workflow_id=? AND step_id=?`, c.ns, checkpoint.ActivationID, c.workflow, step).Scan(&activated); err != nil {
 		return false, err