Verifies type_key: podcast style payloads. Apple Podcasts / iTunes Search is always on; Taddy runs when you apply GraphQL credentials.
Amazon adds merchandise / book-style discovery links via window.PLAYLISTS_AMAZON.
Sub media types
Show name, episode title, host, and topic refine Apple Search; Taddy uses show name.
Maps to PLAYLISTS_ENRICHER.keys.taddyUserId and taddyApiKey.
Amazon: —