Disable FurShellRenderer globally (not production-ready yet)

IsGloballyEnabled() kill switch: Awake destroys the component at
runtime, OnEnable self-disables in the editor. Flip the constant to
re-enable.

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>

Assets/Scripts/Components/FurShellRenderer.cs

@@ -19,6 +19,8 @@ namespace Chameleon.Components
     [ExecuteAlways]
     public sealed class FurShellRenderer : MonoBehaviour
     {
+        public static bool IsGloballyEnabled() => false;
+
         [Header("Shells")]
         [SerializeField] Material _furMaterial;
         [SerializeField, Range(1, 64)] int _shellCount = 32;
@@ -143,8 +145,25 @@ namespace Chameleon.Components
         Matrix4x4[] _instances;
         MaterialPropertyBlock _mpb;
 
+        void Awake()
+        {
+            if (IsGloballyEnabled())
+            {
+                enabled = true;
+                return;
+            }
+
+            Destroy(this);
+        }
+
         void OnEnable()
         {
+            if (!IsGloballyEnabled())
+            {
+                enabled = false;
+                return;
+            }
+
             _meshFilter = GetComponent<MeshFilter>();
             // On a skinned avatar the fur borrows this component's per-frame baked pose instead of a
             // static MeshFilter mesh (see ResolveMesh).