Add advanced animation system to 3D viewer

[kryptokommunist]

Summary

• add a dedicated animation style selector in the 3D controls so the viewer can switch between eight presets, including three cellular-automata modes
• update the 3D viewer to build neighbour-aware topology data for arcgroups and drive a new animation engine that supports the eight presets and restart logic

Testing

• Not run (not requested)

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Codex Task