The KDoc claimed the worst hand is percentile 1.0, but percentiles mark the
START of each class's band, so the last class begins at (1326-12)/1326 ~ 0.991
and no real hand reaches 1.0. Documents that this is correct for gating, since a
class is admitted when its band opens inside the range. Also notes that the
unused key slots keep 1.0 as an unreachable sentinel.
Docs only; no behaviour change. 37 tests still pass.
Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
thejayman77
96af198097