getContactSequenceActivity returns recent sequence events for a contact,
optionally restricted to one sequence.
automations/get-apollo-sequence-activity.automation.ts
contact is required. sequence is optional. limit defaults to 50 and is
limited to 1–50. Optional account selects the binding. Returns canonical
contactId and newest-first events. Event types are completed, enrolled,
failed, paused, removed, replied, or resumed; events also include
occurredAt and optional sequence, step, message, and reason metadata.