digraph FullStack {
    graph [goal="Full-stack scenario: command, agent, human gate, and goal gate verification"]
    rankdir=LR

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

    setup   [label="Setup", shape=parallelogram, script="mkdir -p /tmp/scenario_full && echo ready > /tmp/scenario_full/flag.txt"]
    plan    [label="Plan", prompt="Read /tmp/scenario_full/flag.txt. Then create a file /tmp/scenario_full/result.txt containing the word PASS.", shape=tab]
    approve [label="Approve?", shape=hexagon]
    impl    [label="Implement", prompt="Create the file /tmp/scenario_full/result.txt containing exactly the word PASS on the first line."]
    verify  [label="Verify", shape=parallelogram, script="cat /tmp/scenario_full/result.txt", goal_gate=true, retry_target="impl"]

    start -> setup -> plan -> approve
    approve -> impl   [label="[A] Approve"]
    approve -> plan   [label="[R] Revise"]
    impl -> verify -> exit
}