prefeiturasp/SME-Workflow-SDK ? reverse-engineered prompt

Build me a simple SDK for working with workflow steps and approvals, something I can use in another app to start, track, and finish processes without a lot of boilerplate.

I want it to feel clean and easy to call from code, with sensible defaults and clear methods for creating a workflow, moving it forward, checking status, and handling errors. If there are any modern best practices or current docs I should follow, look them up online and use them.

Keep it lightweight and practical, and make sure the examples are easy to understand so I can plug it into a real project right away.