Engine: add side-aware Outcome enum for accurate ceiling estimation

Add post-training evals, /dev/shm checkpoints, async HF push, and _orig_mod fix

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

Add git version baking in Dockerfile, progress monitoring, and probe eval script

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

Move PAWN to open source repo.