Update entity rendering documentation to include support for additional entity types, parent/child hierarchies, and distance-based querying

docs/ENTITY_RENDERING_ENHANCEMENTS.md

@@ -17,7 +17,9 @@ enum class EntityType {
 
     All core entity rendering features are implemented:
 
-    - 3D model rendering (GLTF/GLB) for Box, Sphere, Model types
+    - 3D model rendering (GLTF/GLB) for Box, Sphere, Model, Text, Light, Zone types
+    - Parent/child entity hierarchies (scene graph, transform propagation)
+    - Entity query/filtering by distance (C++/Rust bridge API)
     - HTTP/HTTPS model and texture download and caching (SHA256-based)
     - Primitive model generation (cube, sphere, suzanne) with Blender
     - Transform, dimension, and color/texture data parsing and propagation