Returns one row per day of a Claude Enterprise organization's seat census, as Anthropic
reported it: seats assigned, active people over the vendor's daily, weekly and 30-day
windows, and invitations nobody has accepted.

seatsUsed is the 30-day active count, which is the figure Anthropic's own adoption rate
divides by the assigned seats.

Counts come back absent rather than zero. Anthropic withholds the seat and invite figures
for a query scoped to an RBAC group, and a withheld figure is not an organization that
assigned no seats.

An organization with no Claude Enterprise credential returns an empty list rather than an
error, since never having connected Enterprise is not a failed request.