add documentation

Assets/Scripts/VoxelWorld/VoxelWorldNavMeshLifetimeScope.cs

@@ -10,6 +10,9 @@ namespace VoxelWorldScene
 {
     [DisallowMultipleComponent]
     [RequireComponent(typeof(VoxelWorldGenerator))]
+    /// <summary>
+    /// Scene-level composition root that wires the voxel world, nav coverage services and interest readers into one runtime module.
+    /// </summary>
     public sealed class VoxelWorldNavMeshLifetimeScope : LifetimeScope
     {
         [SerializeField] private bool enableRuntimeNavMesh = true;