Retrieves cost per person for the authenticated user's organization, one row per person,
for providers that attribute spend to a person at the source.

Cost only. Token counts, request counts and per-million figures have no source on this
path and come back absent rather than zero. Spend attributed to nobody is not a row here.

Envelope: totalCost is every provider's spend for the period, as on the sibling
views. peopleTotalCost is the part the rows carry, summed over every page, and
userCostRemainder names the rest: emailWithoutPersonId (a provider such as Cursor
recorded an address but no person id), outsideDeveloperReport (GitHub Copilot spend
outside its per-person report), enterpriseNotAttributed (Claude Enterprise spend the
vendor attributed to no person) and apiKeysAndWorkspaces (everything else). The five
parts add up to totalCost. Both fields follow the period, provider, usageType and
apiKey filters and ignore query, minCost, maxCost and paging.

provider: only anthropic_enterprise and github_copilot return rows, because
they are the providers that attribute spend to a person today. Any other value, including
anthropic and openai, returns an empty page rather than an error.

usageType: filtering narrows a person to that one type, and the provider writes
its non-token charges under their own type names, so a filter drops them from the
person's total. Omit it for a person's whole cost.

sort: totalCost (default, descending), userId, userEmail, userLogin,
provider, percentage, creditsApplied. These are the aggregate names, not the
response field names, and an unknown key fails the request with 400.

All costs are in USD.