document max mean speed 1.621 m/s @ cmd 2.0 (model_76500), training stopped

latest running model_76500 (iter 76506, cap 2.5): 1.621 m/s @ cmd 2.0

rm root dup

place latest model under checkpoints/

rm stale 58000

latest running model_59000 (iter 59036, 1.57 m/s @ cmd 2.0)

rm old ckpt

Microduck RL: exact DuckEMW recipe, cap 2.0, model_58000 (1.65 m/s @ cmd 2.0)

initial commit