%%{init: {'theme': 'neutral'}}%%
flowchart TD
    A[LLM.stream called] --> B{providerID starts with 'opencode'?}
    B -- Yes --> C[Add x-opencode-project/session/request/client headers]
    B -- No --> D[No extra headers added]
    C --> E[Merge model.headers]
    D --> E
    E --> F[Merge plugin chat.headers]
    F --> G[streamText call]

    subgraph "Before PR (removed path)"
        H{providerID !== 'anthropic'?}
        H -- Yes --> I["Add User-Agent: opencode/VERSION"]
        H -- No --> J[undefined — no headers]
    end

    style D fill:#f99,stroke:#c00
    style I fill:#9f9,stroke:#090
    style J fill:#ccc,stroke:#999