List executions

Enrolments in one workflow, newest first — each with the contact's email, where it currently sits in the graph, and what it is waiting on. Filter with status and cap with limit.

This is the log to read when a workflow "did nothing". An empty list means nothing ever enrolled, which is a trigger problem — check POST /v1/events's triggered and skipped arrays. A list of waiting rows means enrolment worked and the contacts are sitting on a delay or an event that has not arrived, which is a graph problem. The two look identical from the outside and have nothing in common as fixes.