Rotting/aging open PRs and closed-without-merge counts as an AI-waste signal, per engineer. Open-PR figures reflect the current synced state; closed-without-merge counts and the cost basis are scoped to [startDate, endDate]. Aging and rotting classify by INACTIVITY (days since the PR's last provider-side activity) against the org's thresholds, not by age alone; rows also carry ageDays, lastCommitAtVcs, and reviewDecision. Draft PRs are counted separately and excluded from aging/rotting; known bot authors are excluded from every figure. Dollar estimates are computed client-side as count x avgCostPerMergedPr (an org-average basis, labeled an estimate); at-risk (rotting) and wasted (closed unmerged) stay separate figures. Thresholds come from the team settings endpoint (/v2/api/teams/{id}/settings/pr-health) and are echoed here.