Pre-evaluated NNUE scores from NNUEBot.batchEvaluateRoot are now passed
as root hints into AlphaBetaSearch, improving move ordering at ply 0 before
the TT is populated. Hints are threaded immutably through SearchParams to
satisfy the no-var constraint.
Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>