H1lkaaaGD/Minecraft_1.21.11_Source ? reverse-engineered prompt

I want to get this Minecraft 1.21.11 source project into a working state so I can open it, build it, and run it locally.

Please clean up anything needed so the codebase is usable as a normal project, with the game code, assets, and data all wired together correctly. If there are missing setup steps or broken references, fix them. If you need to look up current docs online to make sure the launch setup is right, go ahead.

I’d also like a simple README that explains how to build and start it, plus any notes about what this source includes and any limits I should know about. If there are obvious problems in the source tree that would stop it from compiling or launching, handle those too.

Keep it focused on getting the project working end to end, not on adding new game features.