apollo.addRecordsToLists adds contacts or accounts to named lists and creates missing lists when Apollo permits.
automations/add-apollo-list-members.automation.ts
recordType to "contacts" | "accounts". Provide non-empty records and listNames arrays. Set async: true for background processing of a large change. Optional second argument { account } selects the Apollo binding.
Returns { lists, job?, message? }. Synchronous changes return affected lists. Asynchronous changes return a job with jobId, entity IDs, progress, type, and optional batch/user metadata.