Deletes the articulation anchor role. Adds ShipJoint (key 5 Joints), ShipAnchor.Joint (key 5),
the judge's joint-shape, mount-on-joint and yaw-reach checks over RigChains, Bind's GLB checks
(ReadNodeIds returns the nearest tagged ancestor), and ShipModPlan.Rigs. Presentation only:
arc stays HardpointData.FiringArc and traverse WeaponData.Tracking (ruling mount-arc-gun-traverse).
Not yet built or run when committed; the verification commit follows.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>