Body step 2: the player is a muscle-driven ragdoll (Project TX)

PlayerRagdoll: 9 bodies, spine/neck ball joints, shoulder drives (girdle + muscle),
elbow hinges, torque-capped motor PDs toward the True Body, chest->hand guides,
implicit balance motor, mass-scaled ground control. PlayerRig: XR driver with
stick move / snap turn and Bonelab-style push-back (eye->camera sphere sweep).
Replaces the chase bodies in main.tscn; RagdollSpike regression (14 phases).

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

scripts/PhysicsHands.cs

@@ -54,7 +54,7 @@ public partial class PhysicsHands : Node
     public static RigidBody3D GetBody(XRController3D controller)
     {
         if (_instance == null)
-            return null;
+            return PlayerRig.GetHandBody(controller);  // the ragdoll player owns the hands
         return _instance._left == controller ? _instance._bodies[0] : _instance._bodies[1];
     }