add documentation

Assets/Scripts/VoxelWorld/VoxelWorldPlayerStreamTargetBinding.cs

@@ -6,6 +6,9 @@ namespace VoxelWorldScene
 {
     [DisallowMultipleComponent]
     [RequireComponent(typeof(VoxelWorldGenerator))]
+    /// <summary>
+    /// Keeps the voxel world streaming target aligned with the local player when available, or a spawn anchor as a safe fallback.
+    /// </summary>
     public sealed class VoxelWorldPlayerStreamTargetBinding : MonoBehaviour
     {
         [SerializeField] private VoxelWorldGenerator worldGenerator;