Changelog

Major restructuring: moved from npcs/submodules to top-level module
Added comprehensive import item entity system with client/server functionality
Major library expansions with 356+ lines of new client code and 91+ lines of server code
Enhanced configuration system with detailed server settings (260+ lines)
Added waypoint system for package delivery
Improved black market NPC with enhanced buying/selling mechanics
Code cleanup and module structure improvements
Added basket purchasing system and enhanced UI