Per-day session utilization for a contiguous date range in the business's local timezone. Shape mirrors BusinessUpcomingSessionStats but covers a caller-specified window so contribution-graph-style heatmaps can show past + future utilization in one query. See Business.sessionUtilizationHeatmap.
Fields
startString!Inclusive start of the window as YYYY-MM-DD (business-local). Echoed back from the input verbatim so callers can confirm the range.
endString!Inclusive end of the window as YYYY-MM-DD (business-local).
todayString!Business-local "today" as YYYY-MM-DD. Lets callers mark today's cell distinctly in the heatmap rendering.
daily[SessionUtilizationDay!]!One entry per calendar day from start through end (inclusive), zero-filled. Sessions with status scheduled, active, or completed are counted; cancelled is excluded.