Six Planes

%% The Six Planes — one home for truth; five derive from it without becoming it.
flowchart TB
    CP{{"Control Plane<br/>identity · policy · approval · orchestration · kill switches<br/>(enforces; owns nothing)"}}
    subgraph TRUTH[" "]
      T[("Truth Plane<br/>identity · ownership · money · rights · audit · irreversible facts<br/>ONE authoritative home")]
    end
    AP["Acceleration Plane<br/>caches · counters · locks · rate limits<br/><i>disposable — rebuilt in ms</i>"]
    PP["Projection Plane<br/>search indexes · read models · graphs<br/><i>rebuildable, but expensively</i>"]
    IP["Intelligence Plane<br/>recommendations · embeddings · AI reasoning<br/><i>provisional — proposes, never disposes</i>"]
    OP["Observation Plane<br/>logs · metrics · traces · telemetry<br/><i>lossy account — explains, never decides</i>"]

    T -->|"events, truth-outward"| AP
    T -->|"events, truth-outward"| PP
    T -->|"events, truth-outward"| IP
    T -.->|"described by"| OP
    CP -.->|"enforces facts in"| T
    CP -.->|"gates"| AP
    CP -.->|"gates"| PP
    CP -.->|"gates"| IP