Create a Fabric 1.21.1 client+server mod called SlowPrinterBot compatible with Fabric API, Litematica, and MaLiLib. Add a fake-player builder bot that automatically builds loaded .litematic schematics in Survival mode at 1 block/sec using human-like movement, pathfinding, rotations, scaffolding, climbing, and legitimate right-click placement. Support huge and 100+ block tall builds, retry failed/missed blocks, anti-stuck logic, and safe movement. The bot must have a persistent inventory GUI where players can give/take items and monitor materials in real time. Save inventory, position, and build progress after restart/despawn. Add GUI controls, schematic loader, progress display, and commands for spawn, load, start, stop, pause, resume, and speed. Optimize for low lag and anti-cheat friendly behavior