fix: repetition feature lost in FEN round-trip (train/inference mismatch); greedy-health exp

parallel self-play (--workers), conversion experiments, whitelist

mate-capability suite + analysis scripts

whitelist analysis scripts; fix pid-recycling in launch/job_table

add cross-arm grid analysis

tinychess: full research artifact - self-play RL, ablations, compute scaling, faithfulness, precision, plasticity

tinychess: self-play research substrate (phase 1-4)