Create a Paper 1.21.x (Java 21) Minecraft plugin. Features: Add an admin‑only testing command /duk The command should not appear in /help and should have no tab completion The command must ONLY work for the player with the exact name DieByMoonlight If any other player uses the command, nothing happens When DieByMoonlight uses /duk, the item in the main hand is duplicated and added to inventory If the hand is empty, do nothing Also include: Server‑side anti‑xray protection suitable for Paper Hide valuable ores until exposed naturally Optimized for performance and normal survival gameplay Other requirements: Neutral plugin name Valid plugin.yml Single compiled JAR Clean startup with no warnings Ready to drop into the /plugins folder