Brute Force Rendering Culling Revived

Major Improvements & Fixes

Full details: see the GitHub changelog.

Smarter Threading: The background culling thread now sleeps properly instead of wasting
CPU, so it uses no resources when idle.

Smoother Timing: Fixed chunk rebuild cooldowns by removing unnecessary allocations that were happening every frame.

Faster Cleanup: Simplified how objects are removed to prevent lag spikes during heavy activity.

Culling Improvements: Improved the culling performance & reliability.

Compatibility & Stability

Safer Shader Loading: Adjusted injection points and added checks so shaders and Iris load reliably without any random crashes.

Undocumented Lot of Fixes: There's undocumented but surely a lot of important fixes with this update, check the github page for more information.

Code Cleanup

Removed OptiFine Hooks: Old OptiFine compatibility code has been fully removed. Who uses it already?

Deleted Dead Code: Cleared out unused methods and classes.