@playlive/react-pipeline
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    Variable KNOWN_URLSConst

    KNOWN_URLS: readonly string[] = ...

    Twitch Extension URL disclosure (PRD §6.1). This package doesn't open any sockets or fetches itself — every URL flows through @playlive/realtime-pipeline (which lists the default UDP host) and @playlive/fundraiser-data (REST surface, if the consumer also installs a fetch tier). Add those packages' URLs (plus any overrides) to your Extension submission's URL disclosure list.