kennytv/Maintenance — reverse-engineered prompt

Build me a Minecraft server maintenance mode plugin that works across Paper, Spigot, BungeeCord, Sponge, and Velocity.

I want server owners to be able to turn maintenance mode on and off with commands, show a custom server list message and server icon while maintenance is active, and stop normal players from joining with a clear kick message. There should be a whitelist so staff or selected players can still join, plus start and end timers so maintenance can automatically begin or finish after a set time.

Please make the messages and settings easy to edit in config files, with support for multiple languages. For proxy setups, let admins enable maintenance for just one backend server or the whole network, and support syncing the maintenance state and whitelist across multiple proxy instances using Redis. Add sensible permissions, helpful command feedback, and clean documentation comments in the config. Look up current Minecraft platform docs online if you need to.