Windowed GUIs

Added

• Support for Minecraft 1.21 and 1.21.1 from a single jar (NeoForge & Fabric)

Changed

• Replaced Forge support with NeoForge; the mod now targets NeoForge 21.0 and newer
• Moved window and taskbar transforms onto the JOML matrix stack the 1.21 render system exposes
• Rebuilt item transfer over the registry-aware packet buffers introduced in 1.20.5
• Retargeted the Sophisticated Core hooks onto the payload records that replaced its old message classes
• Chest lid animation now merges tracked viewers into the player list 1.21 reports, instead of a count

Fixed

• Clipped regions inside a window are now mapped through that window's own transform, so the inventory player model, scroll panes and item lists are no longer cut away

Tested against:

• Minecraft: 1.21.1
• NeoForge: 21.1.222
• Fabric Loader: 0.18.5