List the references attached to a content card, in order: referenceType (video | creator | link | document), title, referenceUrl and referenceId. For a video, referenceId is the catalog videoId: pass it to get_catalog_video for the transcript. For a creator, referenceId is the creatorId for get_creator. Links and PDFs carry extraction (status pending | done | error, highlights and extractedTextChars); pass includeText true to also get the full extracted text. Also returns webSearch, the web searches the AI ran for this card.