NeoForge 1.21 Chunk-Claim Mod

I need a lightweight NeoForge 1.21.1 mod that lets players protect their territory through a simple in-game menu. Once a chunk is claimed, no one except the owner may break or place blocks, open doors, or take items. The owner can extend full build-level access with the command /trust <username> Trusted players should be able to do everything the owner can inside those chunks—use chests and crafting tables, interact with animals or villagers—just not run extra commands. Hostile-mob control is also essential. When protection is toggled on, any zombie (or other hostile mobs) already present inside the area must vanish instantly, and no new ones may spawn there afterward. Core flow I’m looking for: 1. Player opens the claim menu, selects the chunk, and confirms. 2. Permissions apply immediately. 3. The owner may toggle mob-free mode on or off via command. Deliverables • Source code and compiled .jar targeting NeoForge 1.21.1 • Simple config file (or gamerule) for future tweaks to menu text, default settings, and mob list • Minimal user documentation: claiming steps, /trust syntax, mob toggle command The finished mod should be dependency-free apart from NeoForge itself and leave server performance unaffected when no chunks are claimed.