sequenceDiagram
    autonumber
    participant Engine as Outreach Engine
    participant Prune as Prune / Probe Module
    participant Web as Target Web Server
    participant Clean as Cleaned Draft

    Engine->>Prune: Draft Markdown + Money Link URL
    Prune->>Prune: Extract all markdown links
    loop For each external link
        Prune->>Web: GET (Range: bytes=0-0, SSRF guarded)
        Web-->>Prune: HTTP Status Code
    end
    alt Link is 2xx/3xx (Live)
        Prune->>Clean: Keep link format
    else Link is Dead (Normal citation)
        Prune->>Clean: Unwrap to plain text anchor
    else Link is Dead (Money Link)
        Prune->>Clean: Retain link and flag issue
    end
    Clean-->>Engine: Cleaned Draft Markdown