MineAddOps/MineChoicePicks/MineCopyTokens return types and all
extraction casts changed from int to CardOwner. The 4 routing
comparisons in BattleSessionState now read isSelf == CardOwner.Self
instead of isSelf == 1.
No wire or behavioral change — CardOwner was already in use on the
wire-facing side (OppoTargetEntry, UnapprovedCardEntry); this extends
it to the internal mining path so the bare-int transpose risk is gone.
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
a3e445cf2f