Get a country's adoption aggregates
Peppol adoption for one country as one bare object: headline totals (universe, on_peppol, penetration), the single-dimension cuts (sector with a NACE section rollup, region, FR-only département + size class, BE-only province + postcode + mandate scope, legal-form family, and company age), the same categorical cuts cross-tabbed by company-age band (`cuts_by_age`), and the trend (monthly new adopters plus per-run penetration history). Region cells carry ISO 3166-2 (BE) / INSEE région (FR) codes and sector cells the NACE division code, so the choropleth joins geometry with no string matching. Numerator cells below 10 matched companies are suppressed (`on_peppol`/`penetration` null, `suppressed` true); denominators are never suppressed. Cached for a day (data moves monthly).