Each PlayerPose now carries its own collider center Y, radius and height,
eased and routed to the CharacterController via a SetCapsule single-writer.
This lets crawl poses (Ball/Star) shrink the capsule to fit under furniture.
The ceiling Y offset is removed; poses without authored sizes fall back to
the base capsule, so existing poses keep their collision.
Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>