Release for 26.2 (first, may be unstable. Please report any issues)

Performance & Memory Optimization:

• Fixed a severe GC (Garbage Collection) memory leak and client micro-stutters. Removed redundant bufferSource.initialize() calls in CustomPlayerItemInHandLayer that were breaking the batch rendering pipeline and causing massive RAM allocations every frame. Network & Synchronization:

• Optimized model network synchronization (Packet 03). The server now performs targeted partial syncs (only sending necessary model data) instead of broadcasting the entire model catalog every time a player joins or a model is updated, significantly reducing bandwidth and sync delays.