Workflow representations
The first product does not need a universal workflow platform.
Direct representation
The working userscript and its observed test are sufficient for the first vertical slice.
Later convergence
Visual recordings, userscripts, agent plans, imported macros, and NetworkScript endpoints may later share an Operation Graph when two real representations need synchronization.
Rule
Do not create a generic intermediate representation merely because one could exist. Add it when direct code no longer handles the demonstrated editing, conversion, or execution problem.