DeepNull Reforged 4.2.0-beta-fabric

Beta release for Minecraft 1.21.1 on Fabric, updated to bring the Fabric branch up to parity with the current 1.21.1 line.

What’s New

• Synced the Fabric 1.21.1 branch forward with the newer 1.21.1 updates through the 4.2.0 line.
• Brought the Fabric branch up to the current feature set from the main 1.21.1 branch instead of leaving it on the older beta state.
• Expanded automated testing and CI coverage so the Fabric branch now validates more like the main line.

DeepNull and DampNull Improvements

• Added the global auto-pickup toggle from the newer branch, including saved player state and client hotkey support.
• Prevented newly tossed items from being immediately re-absorbed by auto-pickup by bringing over the pickup-delay behavior.
• Added the Connections filter preset mode for pipes, cables, conduits, buses, tunnels, and similar transport-style items.
• Updated DampNull fluid handling so gas-only configurations reject normal fluid insertion like they do on the current main branch.
• Added right-click fluid container transfer support for docked DampNulls.
• Updated dock automation extraction so default keep-one behavior and explicit keep amounts match the current 1.21.1 behavior more closely.
• Increased supported stoneworks amount handling to the newer full-range behavior instead of the older small cap.
• Synced the newer transfer-from-target matching behavior so connected inventories only lose items that were actually accepted.
• Expanded stored item right-click proxy behavior so more supported items work correctly from inside the DeepNull.

Config and Data Fixes

• Brought over the newer DampNull default fluid-capacity values.
• Added migration handling so older configs using the legacy DampNull capacity defaults are corrected automatically.
• Added the newer Crafting Tweaks return-integration config toggle to match the current main branch behavior.
• Updated guide and wiki docs for the new filter mode and config behavior.

UI and Controls

• Added the newer GUI input mapping behavior for primary, secondary, and tertiary DeepNull actions.
• Added the global auto-pickup keybind and in-game feedback messages.
• Updated DeepNull, DampNull, and Null Workbench input handling so screen actions follow the newer branch behavior more closely.
• Increased the stoneworks amount text entry limit so larger values are handled cleanly.

Compatibility

• Kept JEI crafting transfer behavior aligned with the newer branch fixes, including better validation when transfers cannot be completed.
• Kept Crafting Tweaks integration aligned with the current config-driven behavior.
• Adjusted the Fabric-side AE2 compatibility path so it falls back more safely instead of blocking the generic transfer path when AE2 is present.

Beta Notes

• This is still a beta release for Fabric 1.21.1.
• The build is much closer to parity now, but you should still expect beta-level bugs and edge cases.
• Back up worlds before updating.