How can I use Catalyst to override specific workflow steps without touching my existing engine?

You can use Catalyst to layer targeted workflow overrides atop your existing engine without full migration. Catalyst acts as a lightweight control plane that intercepts specific workflow steps, reroutes them to custom business logic, and passes validated results back to your original engine without altering core deployments. This targeted overlay approach works only for isolated, non-critical workflow steps; avoid overriding high-volume, core pipeline segments to prevent unintended disruptions.