Add cameraTargetYOffset to PlayerPose so each pose can offset the
Cinemachine ThirdPersonCamera follow/look target independently of the
body mesh. PlayerCharacterController gains a cameraTarget reference
(auto-resolved via the "CameraTarget" child, base position captured in
Awake) and a single-writer SetCameraTargetLocalYOffset. PlayerPoseController
eases the per-pose camera offset and composes it with the shared ceiling
offset, so the camera target follows the ceiling lift in lockstep with the
mesh. Wire cameraTarget explicitly in SampleScene.
Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>