trello.listChecklists returns every checklist with its items.
automations/list-trello-checklists.automation.ts
card accepts an ID, short link, or URL. Optional second argument { account } defaults to the project binding.
Returns Signal<TrelloChecklist[]>. A checklist has id, boardId, cardId, name, position, and checkItems. Each item has id, name, state, position, nullable dueAt, nullable dueReminder, and nullable memberId.