Replace ceiling Y offset with per-pose CharacterController capsule

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>

Assets/Poses/Pose_Ball.asset

@@ -18,5 +18,7 @@ MonoBehaviour:
   walkClipSpeed: 1
   runClip: {fileID: 0}
   runClipSpeed: 1
-  ceilingYOffset: 0.84
+  controllerCenterY: 0.25
+  controllerRadius: 0.15
+  controllerHeight: 0.5
   cameraTargetYOffset: -0.5

Assets/Poses/Pose_Star.asset

@@ -18,5 +18,7 @@ MonoBehaviour:
   walkClipSpeed: 1
   runClip: {fileID: 0}
   runClipSpeed: 1
-  ceilingYOffset: 1
+  controllerCenterY: 0.12
+  controllerRadius: 0.1
+  controllerHeight: 0.3
   cameraTargetYOffset: -0.55