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flowchart LR
    A["dev\n≥ 0.50\nautonomous"] -->|promotion| B["qa\n≥ 0.75\nQA attests"]
    B -->|promotion| C["prod\n≥ 0.90\nSRE attests"]
    C -->|promotion| D["dr\n≥ 0.95\nSRE + DR drill"]
    A -.->|"Testing\n(pilot-ready)"| A
    B -.->|"Planned"| B
    C -.->|"Planned"| C
    D -.->|"Planned"| D
classDef accent fill:#1B1B1B,color:#fff,stroke:#D6002A,stroke-width:2px
classDef supporting fill:#fff,color:#1B1B1B,stroke:#D6002A,stroke-width:1px

