Ship mounts: delete EquipmentHardpoints and the plan's Equipment list

The array's only reader was the dead SoundBank block in EntityInstance, which
looked up a hardpoint transform and did nothing with it. ShipModPlan.Equipment,
ShipModShips' assignment, the preview check, the FBX builder's HP.Equipment
case and its smoke assertion all fed that one dead reader. An HP.Equipment node
is now refused by the builder as an unknown hardpoint kind.

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

Assets/Scripts/ServerShared/ShipModPlan.cs

@@ -10,8 +10,6 @@ public sealed class ShipModPlan
     public string HullCollider;
     public string Shield;
     public string Tractor;
-    // Every hull hardpoint's mount id, in hardpoint order: the anchor node each one is matched to by name.
-    public string[] Equipment;
     // Mount ids whose anchor (role thruster-emitter / radiator-mesh) is the emitter / mesh node itself.
     public string[] Thrusters;
     public string[] Radiators;
@@ -53,7 +51,6 @@ public sealed class ShipModPlan
             HullCollider = Only("hull-collider"),
             Shield = Only("shield"),
             Tractor = Only("tractor"),
-            Equipment = hardpoints.Select(hardpoint => hardpoint.Transform).ToArray(),
             Thrusters = Mounts(HardpointType.Thruster),
             Radiators = Mounts(HardpointType.Radiator),
             Weapons = weapons