- Track HalfmoveClock in GameState/ChessService (reset on captures and pawn moves)
- Emit the real halfmove clock in ToFen and add GameState.RepetitionHistory()
(prior positions since the last irreversible move) in ChessEngineHelpers
- Pass that history through IChessEngine.GetBestMoveAsync to the native engine;
Stockfish ignores it
Co-Authored-By: Claude Opus 4.8 (1M context) <[email protected]>
Josh-Heaps