digraph room_layers {
    rankdir=TB
    fontname="Helvetica"
    node [fontname="Helvetica" fontsize=10 style=filled shape=record]
    edge [fontname="Helvetica" fontsize=9]

    label="Room Layers — init wizard"
    labelloc=t
    fontsize=14

    l0 [class="accent" label="{Layer 0 | Config + Data | config.json · data/*.json}"]
    l1 [label="{Layer 1 | Docker | soleprint/docker-compose.yml · .env}"]
    l2 [label="{Layer 2 | Managed App | docker-compose.yml · Dockerfiles · .env}"]
    l3 [label="{Layer 3 | Link | link/main.py · adapters/ · Dockerfile}"]
    l4 [label="{Layer 4 | Scripts | ctrl/start.sh · stop.sh · status.sh · logs.sh}"]
    l5 [label="{Layer 5 | Systems | tester/environments.json · tests/}"]
    l6 [label="{Layer 6 | Nginx | nginx/local.conf · docker-compose.nginx.yml}"]

    l0 -> l1 [label="required"]
    l1 -> l2 [label="if managed"]
    l2 -> l3 [label="optional"]
    l1 -> l4 [label="optional"]
    l4 -> l5 [label="optional"]
    l5 -> l6 [label="if frontend"]

    // Annotations
    note_req [class="accent" label="every room" shape=plaintext fontsize=9]
    note_req -> l0 [style=invis]
}