Infinite Storage Chests

Summary
I've created a complete Minecraft Paper plugin for version 1.21.4 with the following features:

Custom Infinite Storage Chests

Players can craft special chests using obsidian, ender pearls, and a regular chest
Items stored in these chests stack infinitely
A custom GUI for easy item management

Storage System

YAML-based storage (with option for SQLite in config)
Persistent item storage across server restarts
Configurable maximum unique items per chest

GUI Features

Pagination for browsing large item collections
Search functionality by item name
Sorting options (by name or quantity)
Easy item retrieval with different click options

Permissions and Limits

Configurable maximum chests per player
Permission-based access to crafting and usage
Admin commands for chest management

Administration

Commands for giving chests to players
Reloading configuration
Viewing plugin statistics