Create a Paper plugin for Minecraft 1.21.11. Make a secure player trading system: - /trade <player> sends request - accept/deny trade requests - opens trade GUI for both players - item exchange with confirm button on both sides - cancel trade on disconnect IMPORTANT: - NO distance limit (global trading anywhere on server) GUI: - 2-sided trade inventory - confirm buttons (red/green) COMMANDS: - /trade <player> - /trade accept - /trade deny Must prevent item duplication bugs and be fully working, ready to compile into .jar for Paper 1.21.11.