Design a Visual Scenario Execution Model

Problem

Design the model behind a visual automation tool: modules connected into a scenario that passes data along edges.

Requirements

• Modules with typed inputs/outputs
• Connections map output->input
• Routers/filters branch the flow
• Iterators fan out over arrays

What evaluators look for

• DAG model with data mapping on edges
• Branching (router) and iteration semantics
• Error handling per module

Extension

Add error-handler routes and resumable execution after a failed module.