Leads Field Fill

Exact fill rate of every column in the delivered file, over the sellable book.

One row per delivered column in the file's own order: filled records carrying a value, fill_pct of the total sellable records (the cohort Browse returns by default), and the basis of the number — counted (exact, from stored values), stamped at delivery (written on every row by the file) or not countable yet (with the reason). Aggregate counts only; no records, no contact details. Served from a snapshot refreshed whenever the data changes (computed_at), never computed on a request.