Pets are walked by the server's MovementAI like enemies, but only enemies'
paths were cut at movement blockers, so pets walked through the Nimbus Station
pet ranch's "PR - Pet Blocker" walls. Their collision group (3) is the one
the pet blocker's group (18) touches in the client's collision filter, so a
pet's path now stops at them (and at navmesh carvers), whether wandering or
following its owner; a pet left behind still warps to its owner.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>