Changelog: • Fix! Fixed critical exploit allowing players to steal heads from coinflip GUI using shift+double-click - comprehensive multi-layer protection added • Fix! Fixed GUI protection being lost when one player closes coinflip animation - remaining player's GUI is now fully protected even after opponent closes theirs • Fix! Added InventoryDragEvent protection - prevents item dragging exploits in all plugin GUIs • Fix! Added COLLECT_TO_CURSOR action blocking - prevents double-click from collecting items across inventories • Fix! All click events now cancelled immediately at GUIManager level with HIGHEST priority as first line of defense • Fix!Dangerous inventory actions (MOVE_TO_OTHER_INVENTORY, HOTBAR_SWAP, etc.) are now blocked in addition to click types • Fix! Player cursor is now cleared after blocking dangerous clicks to ensure no items remain on cursor • Fix! GUI handler and button map are now only unregistered/cleared when ALL viewers close the inventory, not just the first one • Optimize! Updated core development libraries