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flowchart LR
    W["What works now<br/>L1 & L2 stacks live<br/>confidence 0.800"]
    N1["Ingest greenfield<br/>pilot projects"]
    N2["Promote sandbox<br/>to production"]
    N3["Integrate SPGE<br/>constitutional library"]
    N4["Serve as the<br/>infrastructure layer"]
    W --> N1 --> N2 --> N3 --> N4
    style W fill:#1B1B1B,color:#fff,stroke:#D6002A
    style N1 fill:#F0F0F0,color:#1B1B1B,stroke:#D6002A
    style N2 fill:#F0F0F0,color:#1B1B1B,stroke:#D6002A
    style N3 fill:#F0F0F0,color:#1B1B1B,stroke:#D6002A
    style N4 fill:#1B1B1B,color:#fff,stroke:#D6002A