Players pick 1-on-1 shootout or 3-on-3 scrimmage; 3v3 gets nets,
goalies, scoring, OOB whistles to the nearest faceoff circle, and
one-way board re-entry for skaters who leave the ice.
Add img2mesh puck machine for live goalie AI/save testing, catch/block arm IK
with smooth stance blends, and a mover-space stick the blocker hand follows.