digraph SubWorkflow {
    graph [goal="Create a Python module (tempconv.py) that converts between Celsius, Fahrenheit, and Kelvin, with pytest tests"]
    rankdir=LR

    start [shape=Mdiamond, label="Start"]
    exit  [shape=Msquare, label="Exit"]

    plan   [label="Plan", prompt="Analyze the goal. List the functions needed, their signatures, and edge cases. Write the plan to plan.md."]
    impl   [label="Implement & Test", shape=house, stack.child_workflow="implement-and-test.fabro", manager.max_cycles=50]
    review [label="Review", prompt="Read every file the child workflow created. Run the tests yourself with 'python3 -m pytest -v'. Verify the implementation matches plan.md and all tests pass. Write a short verdict to review.md."]

    start -> plan -> impl -> review -> exit
}