completed spatial queries [feature:spatial_queries]
added spatial interfaces [feature:spatial_interfaces]
added parallel processing [new-feature:parallel_processing]
[changelog: Implemented Threading Explicit synchronization and concurrent collections]
[changelog: Implemented Spatial indexing and region queries with 2D/3D support and quadtree optimization]
[changelog: Added spatial interfaces Interface-level spatial query methods with support for custom filters]
[changelog: Added parallel processing of chunks based on spatial queries and regions]
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