betting_combat.rounds.live

The rounds strategy (strategy 4) on a live card: everything between the locked models and an order, pure (no IO; the card session in trading.rounds feeds it).

upcoming   Dataset 1 feature rows for a card before any result (``build_upcoming``)
windows    Set 3 at a decision time from the trades before it (``main_row``, ``side_row``)
artifact   the weekly refit's locked models as one serialisable version (``RoundsArtifact``)
decision   layer 1 -> layer 2 -> the distance chain -> candidates -> meta -> size -> route
replay     a past card replayed through the decision path on the research clock (the
           known answers and the weekly forward check)