Flat paginated list of the pull requests behind the PR Health report: every open PR (drafts included, bucketed DRAFT) plus PRs closed without merging whose closed timestamp falls in [startDate, endDate] (bucketed CLOSED_UNMERGED). Buckets use the report's inactivity classifier against the org's thresholds, echoed in the response. bucket filters to one bucket; author filters to one provider login, with unknown also selecting rows that carry no login, matching the report's grouping. Known bot authors are excluded. sortBy inactivity orders by days since last provider-side activity, age by days since the PR was opened; default is inactivity desc (stalest first) with repo/number tiebreaks. size is capped at 200.