Add PlayerAnimationSync NetworkBehaviour with owner-authoritative
NetworkVariables for pose index and locomotion category (idle/walk/run/fall).
Remote avatars switch their PlayerPoseController into network-controlled mode,
skipping local input, sprint reset, capsule resize and camera framing, and
take pose index plus locomotion externally. Disable pose persistence on
network-driven remotes so foreign avatars can't overwrite the local save.
Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>