Workspace master-key KPI totals for current vs previous equal-length window.
Success data: { "window", "previousWindow", "current", "previous" } — each of current/previous includes totals and active key counts (string numerics).
Optional. Bearer JWT, Virtual Key, or PAT. Server also accepts Cookie alephant_token; not modeled as a header here.
Optional in the spec; required for authenticated analytics. Omit for unauthenticated GET /v1/analytics/health.
Calendar preset; default 30d.
YYYY-MM-DD with end.
YYYY-MM-DD with start.
