exactBlockCount function
Exact grouped block count for the DETAIL sheet ("1,579,873") — the sheet is where the big number belongs (the badge deliberately demotes it to compact; the maintainer's "scary jittery number" report). Locale-aware and memoized like compactBlockCount.
Implementation
String exactBlockCount(int count, String locale) => _exactBlockFmts
.putIfAbsent(locale, () => NumberFormat.decimalPattern(locale))
.format(count);