Where the report's figures come from, one row per group, with the engineers page's definitions: openPrs (open, not draft), agingPrs, rottingPrs, closedUnmerged and mergedPrs (both in [startDate, endDate]). The team settings, departmentId and assistedOnly apply as they do to the engineers page, before grouping and paging. A group appears only when it holds an open pull request or one closed without merging. groupBy=repo groups repository spellings case-insensitively (key is the lowercase name, label one of the spellings seen) and sets noMergesInWindow when the repository had no human merge in the last 90 days, whatever the window, cutoff, department or AI filter. groupBy=engineer returns the engineers page's rows (key is the login, unknown for none) with their mappedEmail, prsInWindow and activeMappedEmail (the engineers page's verified email); the last two are null on repo and department rows. groupBy=department returns the selected department's direct child departments with their subtrees rolled up, or the top-level departments when departmentId is omitted, plus an unassigned row; a row with directMembersOnly=true holds the selected department's own members. Choosing a row's departmentId (with includeDescendants=true, or false for directMembersOnly) gives exactly that row's figures. departmentAvailable is false when the organization has no org chart. totals are whole across every group; for repo and department the rows sum to them except mergedPrs, which also holds the merges of groups that have nothing else. sortBy: rottingPrs, closedUnmerged, openPrs, name, share (rottingPrs + closedUnmerged); ties order by name. Every row and the totals also carry pricedRottingPrs and pricedClosedUnmerged, cut to pull requests opened on or after the report's pricedSince. No dollars are returned: the caller multiplies the priced counts by the report's avgCostPerMergedPr. size is capped at 200. The window may span at most 366 days counting both startDate and endDate (for example 2024-01-01 to 2025-01-01, so a one-year window that crosses 29 February is one day too wide), and startDate must not be after endDate; either violation is a 400.