Group 1 of the sweep listed cmd/mavend/ordinal.go, and it was still
picking a position by stem prefix: {"перв", 1}, {"втор", 2}. The lexicon
already carries every form with its position and "последний" as -1, up to
twelve rather than five, so parseOrdinal reads that instead. "вторым" and
"седьмую" were missed before and now land.
A wider set opens one hole the stems did not have. Russian names a half
hour with the genitive ordinal of the hour it is entering, so "в половине
восьмого" would read as the eighth thing she read out. The forms of
"половина" move into the lexicon as half_hour, where the clock rewrite in
internal/router/halfpast.go and this refusal read one copy, and
parseOrdinal skips an ordinal standing behind one.
Six new parseOrdinal cases. cmd/mavend, internal/router, internal/lexicon
and internal/calendar all pass.
Russian names a half hour by the hour it is entering, in the genitive, so
"половина восьмого" is 07:30 and never 08:30. Neither date parser read that
shape, so the reminder parsed to nothing.
rewriteHalfPast runs in front of the token pass in SpellOutDigits, so the
python parser and the stub both see "в 7:30". It also reads the contracted
"полвосьмого" and the quarter-to shape "без четверти восемь", which counts
from a cardinal and is 07:45. Minus one is in one place, clockHourBefore, with
twelve rather than zero before one.
Ordinals eleven and twelve added to the lexicon, because a clock reaches them.
Minutes a spoken clock does not use are left alone: a guess here is a missed
dose.
Classifier + onnx over the routing fixture 58/82 to 62/87, three new cases,
none regressed. Python dateparser is not installed on this host, so only the
stub was measured. See docs/evals/2026-08-05-half-past-hours.md.
claude