optimized poker table variants:
Merged every RendererLOD chain across the four static configs into one combined FBX each, driven by a single MeshLOD (1/10/25, cull 60).
- RendererLOD chains: 34 > 4 MeshLOD
- LOD components: 226 > 192
- renderers: 321 > 212
- GameObjects: 143 fewer
- LOD0 submesh draws: 49 > 14
- prefab size : 508kb > 122kb
Also cleared a dead LODGroup from _cardtable_base