graph LR
  subgraph Core
    AS["Application Services"]
    Interfaces["Interfaces<br/>(Repository + Adapter Interfaces)"]
  end

  subgraph Infra
    Impl["Infra Implementations<br/>(Repos + Adapters)"]
    Ext["External Systems<br/>HTTP, DB, SDKs"]
  end

  AS --> Interfaces
  Interfaces --> Impl
  Impl --> Ext


  Impl -. "no deps back" .- AS