Add Lichess PGN -> PAWN Parquet extraction pipeline (#4)

Add UCI engine generation, Parquet data pipeline, and Lc0/Stockfish containers

Fix outcome array dtype in ceiling computation, np.asarray in script

Add Monte Carlo accuracy ceiling computation to engine

Safetensors migration, checkpoint integrity, and multi-model training. (#1)

Add Docker BYOC deployment, discard-ply-limit ablation, dashboard, and deploy tooling

Move PAWN to open source repo.