(Had out-of-band convo where we discussed changing `[report, last-run]` to `latest-report`.)

The description should match the format of the other descriptions, which all describe The Thing That This Field Queries. Suggested text:

whether the event occurred in the most recent Puppet run (per-node). NOTE: the value of this field is always boolean (`true` or `false` without quotes), and it is not supported by the regex match operator.