flowchart LR
  subgraph edge["Edge"]
    web["Web App"]
    mobile(["Mobile App"])
  end

  subgraph core["Core Services"]
    gateway("API Gateway")
    decision{"Token valid?"}
    orders["Orders Service"]
    store[("Postgres")]
  end

  web -->|HTTPS| gateway
  mobile -- HTTPS --> gateway
  gateway --> decision
  decision -->|yes| orders
  decision -->|no| gateway
  gateway -.-> gateway
  orders ==> store

  note["Legacy note — unconnected"]